Cu\/XLPE\/PVC\/DSTA\/PVC 12,7\/22(24) kV 3\u00d7240 mm\u00b2: c\u1ea5u t\u1ea1o, \u0111i\u1ec7n tr\u01b0\u1eddng, gi\u00e1p DSTA, d\u00f2ng cho ph\u00e9p v\u00e0 ng\u1eafn m\u1ea1ch<\/title><style>:root{--bg:#0a1014;--p:#101a1e;--p2:#16262c;--ink:#eef6f8;--muted:#9cc0cc;--line:#2a4650;--c:#38c8e8;--g:#5fd88a;--s:#e8c37b;--r:#ff777f;--fo:#ffb454}\n*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px Arial,Helvetica,sans-serif;line-height:1.68}\n.wrap{max-width:1840px;margin:auto;padding:0 28px}a{color:var(--c)}a:focus-visible{outline:2px solid var(--s);outline-offset:2px}\n.doc-header{padding:68px 0 64px;background:radial-gradient(circle at 10% 5%,rgba(56,200,232,.22),transparent 33%),radial-gradient(circle at 90% 8%,rgba(255,180,84,.16),transparent 33%),linear-gradient(135deg,#0a1014,#1c1814)}\n.doc-header .container{text-align:center}.doc-header h1,.doc-header p{max-width:960px;margin-left:auto;margin-right:auto}\nh1{font-size:34px;line-height:1.18;margin:18px auto 20px}h2{margin-top:52px;border-left:7px solid var(--c);padding-left:15px;line-height:1.2}\n.lead{font-size:20px;color:#e6f4f8}.badges{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:14px}\n.badge{background:#0e1a1e;border:1px solid var(--line);border-radius:22px;padding:8px 13px;font-weight:bold}\n.card,.note,.warn,.provenance{background:var(--p);border:1px solid var(--line);border-radius:10px;padding:18px;margin:13px 0}\n.note{border-left:7px solid var(--c)}.warn{border-left:7px solid var(--r)}.provenance{border-left:7px solid var(--fo);background:#20180f}\n.toc{background:var(--p);border:1px solid var(--line);padding:20px;border-left:7px solid var(--c);margin-top:24px}.toc ol{columns:2}\n.scroll{overflow-x:auto;margin:18px 0}table{width:100%;border-collapse:collapse;background:#0e1a1e}\ncaption{text-align:left;color:var(--s);font-weight:bold;padding:8px 0}th,td{border:1px solid var(--line);padding:8px 9px;vertical-align:top}\nth{background:var(--p2)}td:first-child{color:var(--s);font-weight:bold}table.data td:first-child{color:var(--c)}\n.svg{border:1px solid var(--line);padding:10px;background:#0e1a1e;margin:22px 0;border-radius:8px}.svg svg{width:100%;height:auto;display:block}\n.svg-caption{color:var(--muted);font-size:14px;padding:8px 4px 2px}.tag{color:var(--s);font-weight:bold}\n.imgcap{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:20px 0}\n.imgcap figure{margin:0;background:var(--p);border:1px solid var(--line);border-radius:10px;overflow:hidden}.imgcap svg{width:100%;height:190px;display:block}\n.imgcap figcaption{padding:10px 13px;font-size:13.5px;color:var(--muted)}\n.formula{background:#0e1a1e;border:1px solid var(--line);border-left:7px solid var(--s);border-radius:8px;padding:14px 18px;margin:14px 0;font-family:Consolas,monospace;overflow-x:auto}\n.certbanner{background:linear-gradient(135deg,#0f2a30,#14231a);border:1px solid var(--g);border-radius:12px;padding:20px 22px;margin:18px 0}.certbanner h3{margin-top:0;color:var(--g)}\n.certgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin:18px 0}\n.certchip{background:#0e1a1e;border:1px solid var(--line);border-radius:8px;padding:12px 14px}.certchip:before{content:\"\";display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--g);margin-right:10px}\n.contact{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}.contact div{background:#0e1a1e;border:1px solid var(--line);padding:15px}\nsup.ref-n{color:var(--c);font-weight:bold}ol.refs{font-size:14px;color:var(--muted)}.small{font-size:12px;color:#7fa4b0}\nfooter{margin-top:50px;background:#080e10;padding:32px 0}\n@media(max-width:800px){h1{font-size:24px}.toc ol{columns:1}.contact{grid-template-columns:1fr}.wrap{padding:0 16px}.lead{font-size:17px}}<\/style><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"TechArticle\", \"headline\": \"Cu\/XLPE\/PVC\/DSTA\/PVC 12,7\/22(24) kV 3\u00d7240 mm\u00b2 - c\u00e1p ng\u1ea7m trung th\u1ebf gi\u00e1p b\u0103ng th\u00e9p k\u00e9p\", \"inLanguage\": \"vi\", \"dateModified\": \"2026-09-30\", \"publisher\": {\"@type\": \"Organization\", \"name\": \"Anhui FeiChun Special Cable Co., Ltd.\"}}<\/script><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Cu\/XLPE\/PVC\/DSTA\/PVC 22 kV 3\u00d7240 l\u00e0 lo\u1ea1i c\u00e1p g\u00ec?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"C\u00e1p ng\u1ea7m trung th\u1ebf ba l\u00f5i, ru\u1ed9t \u0111\u1ed3ng c\u1ea5p 2 \u00e9p ch\u1eb7t 240 mm\u00b2, c\u00e1ch \u0111i\u1ec7n XLPE d\u00e0y danh \u0111\u1ecbnh 5,5 mm, c\u00f3 m\u00e0n ch\u1eafn b\u00e1n d\u1eabn v\u00e0 m\u00e0n ch\u1eafn kim lo\u1ea1i (b\u0103ng \u0111\u1ed3ng) cho t\u1eebng l\u00f5i, l\u1edbp b\u1ecdc ph\u00e2n c\u00e1ch, gi\u00e1p hai l\u1edbp b\u0103ng th\u00e9p m\u1ea1 k\u1ebdm (DSTA) v\u00e0 v\u1ecf ngo\u00e0i PVC, theo TCVN 5935-2 \/ IEC 60502-2. \u0110\u00e2y l\u00e0 c\u00e1p l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh.\"}}, {\"@type\": \"Question\", \"name\": \"V\u00ec sao ghi 12,7\/22(24) kV m\u00e0 IEC n\u00eau 12\/20(24) kV?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"U0 = 22\/\u221a3 \u2248 12,7 kV l\u00e0 \u0111i\u1ec7n \u00e1p pha-\u0111\u1ea5t c\u1ee7a l\u01b0\u1edbi 22 kV, c\u00f2n IEC 60502-2 li\u1ec7t k\u00ea c\u1ea5p 12\/20(24) kV. C\u1ea3 hai c\u00f9ng Um = 24 kV; catalog Vi\u1ec7t Nam th\u01b0\u1eddng ghi 12,7\/22(24) kV cho l\u01b0\u1edbi 22 kV, v\u1edbi chi\u1ec1u d\u00e0y c\u00e1ch \u0111i\u1ec7n danh \u0111\u1ecbnh 5,5 mm. C\u1ea7n x\u00e1c nh\u1eadn c\u1ea5p U0 theo ch\u1ebf \u0111\u1ed9 n\u1ed1i \u0111\u1ea5t trung t\u00ednh v\u00e0 th\u1eddi gian t\u1ed3n t\u1ea1i s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t c\u1ee7a l\u01b0\u1edbi.\"}}, {\"@type\": \"Question\", \"name\": \"DSTA kh\u00e1c SWA th\u1ebf n\u00e0o, khi n\u00e0o ch\u1ecdn lo\u1ea1i n\u00e0o?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"DSTA d\u00f9ng hai l\u1edbp b\u0103ng th\u00e9p qu\u1ea5n ng\u01b0\u1ee3c chi\u1ec1u, ch\u1ecbu n\u00e9n h\u01b0\u1edbng k\u00ednh v\u00e0 va \u0111\u1eadp ph\u00e2n b\u1ed1 t\u1ed1t, nh\u1eb9 v\u00e0 r\u1ebb h\u01a1n nh\u01b0ng \u00edt ch\u1ecbu k\u00e9o v\u00e0 k\u00e9m m\u1ec1m. SWA d\u00f9ng s\u1ee3i th\u00e9p, ch\u1ecbu k\u00e9o t\u1ed1t h\u01a1n n\u00ean h\u1ee3p v\u1edbi tuy\u1ebfn k\u00e9o d\u00e0i, \u0111o\u1ea1n th\u1eb3ng \u0111\u1ee9ng v\u00e0 n\u1ec1n c\u00f3 nguy c\u01a1 l\u00fan. DSTA h\u1ee3p v\u1edbi tuy\u1ebfn ch\u00f4n ho\u1eb7c h\u00e0o c\u00e1p kh\u00f4ng ch\u1ecbu l\u1ef1c k\u00e9o d\u1ecdc l\u1edbn.\"}}, {\"@type\": \"Question\", \"name\": \"H\u1eadu t\u1ed1 -W c\u00f3 \u00fd ngh\u0129a g\u00ec v\u00e0 c\u00f3 c\u1ea7n cho c\u1ea3ng?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"-W ch\u1ec9 b\u1ea3n ch\u1ed1ng th\u1ea5m: ru\u1ed9t c\u00f3 v\u1eadt li\u1ec7u ch\u1ed1ng th\u1ea5m v\u00e0 l\u1edbp ch\u1ed1ng th\u1ea5m d\u1ecdc c\u00e1p. \u1ede n\u01a1i m\u1ef1c n\u01b0\u1edbc ng\u1ea7m cao ho\u1eb7c ch\u1ecbu th\u1ee7y tri\u1ec1u, n\u01b0\u1edbc x\u00e2m nh\u1eadp qua v\u1ecf h\u1ecfng c\u00f3 th\u1ec3 lan d\u1ecdc c\u00e1p; b\u1ea3n -W h\u1ea1n ch\u1ebf \u0111o\u1ea1n c\u00e1p b\u1ecb \u1ea9m. \u0110\u00e2y l\u00e0 khuy\u1ebfn ngh\u1ecb thi\u1ebft k\u1ebf c\u1ee7a t\u00e1c gi\u1ea3, c\u1ea7n \u0111\u1ed1i chi\u1ebfu v\u1edbi h\u1ed3 s\u01a1 d\u1ef1 \u00e1n.\"}}, {\"@type\": \"Question\", \"name\": \"D\u00f2ng cho ph\u00e9p c\u1ee7a 3\u00d7240 \u0111\u1ed3ng \u1edf 22 kV l\u00e0 bao nhi\u00eau?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb chung: ph\u1ee5 thu\u1ed9c c\u00e1ch \u0111\u1eb7t, nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111i\u1ec7n tr\u1edf nhi\u1ec7t c\u1ee7a \u0111\u1ea5t, \u0111\u1ed9 s\u00e2u v\u00e0 s\u1ed1 m\u1ea1ch chung tuy\u1ebfn, v\u00e0 ph\u1ea3i t\u00ednh theo IEC 60287. M\u1ed9t b\u1ea3ng thi\u1ebft k\u1ebf tham chi\u1ebfu cho c\u00e1p 6,35\/11 kV ch\u00f4n 0,8 m ghi kho\u1ea3ng 500 A \u1edf 20 \u00b0C v\u00e0 1,0 K\u00b7m\/W; c\u00e1p 22 kV c\u00f3 c\u00e1ch \u0111i\u1ec7n d\u00e0y h\u01a1n n\u00ean \u0111\u00e2y ch\u1ec9 l\u00e0 m\u1ed1c so s\u00e1nh, kh\u00f4ng d\u00f9ng thay b\u1ea3ng c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.\"}}, {\"@type\": \"Question\", \"name\": \"Ng\u1eafn m\u1ea1ch: ru\u1ed9t ch\u1ecbu bao nhi\u00eau v\u00e0 m\u00e0n ch\u1eafn c\u1ea7n bao nhi\u00eau?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"M\u1ed7i ru\u1ed9t 240 mm\u00b2 ch\u1ecbu kho\u1ea3ng 34,3 kA trong 1 s theo k\u00b7S\/\u221at v\u1edbi k = 143. M\u00e0n ch\u1eafn b\u0103ng \u0111\u1ed3ng ph\u1ea3i ch\u1ecbu d\u00f2ng s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t c\u1ee7a l\u01b0\u1edbi c\u1ee5 th\u1ec3; ti\u1ebft di\u1ec7n m\u00e0n ch\u1eafn kh\u00e1c nhau gi\u1eefa c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t n\u00ean ph\u1ea3i y\u00eau c\u1ea7u s\u1ed1 li\u1ec7u theo mm\u00b2 v\u00e0 th\u1eddi gian c\u1eaft.\"}}, {\"@type\": \"Question\", \"name\": \"C\u00f3 d\u00f9ng Cu\/XLPE\/PVC\/DSTA\/PVC cho c\u1ea9u, tang cu\u1ed1n ho\u1eb7c x\u00edch d\u1eabn c\u00e1p kh\u00f4ng?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Kh\u00f4ng. C\u00e1p gi\u00e1p b\u0103ng th\u00e9p l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh, n\u1eb7ng kho\u1ea3ng 12,6 kg\/m v\u00e0 c\u1ea7n b\u00e1n k\u00ednh u\u1ed1n kho\u1ea3ng 1 m. Thi\u1ebft b\u1ecb di \u0111\u1ed9ng c\u1ea7n c\u00e1p tang cu\u1ed1n trung th\u1ebf c\u00f3 c\u1ea5p \u0111i\u1ec7n \u00e1p v\u00e0 c\u1ea5u t\u1ea1o ph\u00f9 h\u1ee3p; FeiChun c\u00f3 c\u00e1c b\u00e0i v\u1ec1 h\u1ecd c\u00e1p n\u00e0y.\"}}, {\"@type\": \"Question\", \"name\": \"Ch\u1ee9ng nh\u1eadn c\u1ee7a FeiChun g\u1ed3m nh\u1eefng g\u00ec?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Theo th\u00f4ng tin c\u1ee7a FeiChun: CE, UKCA, VDE, EAC, ATEX, IECEx v\u00e0 ch\u1ee9ng nh\u1eadn an to\u00e0n ch\u00e1y c\u1ee7a Nga. V\u1edbi c\u00e1p trung th\u1ebf c\u1ea7n y\u00eau c\u1ea7u th\u00eam bi\u00ean b\u1ea3n th\u1eed \u0111i\u1ec3n h\u00ecnh IEC 60502-2 c\u1ee7a \u0111\u00fang m\u00e3, c\u1ea5p \u0111i\u1ec7n \u00e1p v\u00e0 ti\u1ebft di\u1ec7n.\"}}]}<\/script><\/head><body><header class=\"doc-header\"><div class=\"container wrap\"><div class=\"tag\">FEICHUN CABLE \u00b7 B\u00c0I K\u1ef8 THU\u1eacT<\/div><h1>Cu\/XLPE\/PVC\/DSTA\/PVC 22 kV 3\u00d7240 mm\u00b2: c\u00e1p ng\u1ea7m trung th\u1ebf gi\u00e1p b\u0103ng th\u00e9p k\u00e9p – con s\u1ed1 n\u00e0o quy\u1ebft \u0111\u1ecbnh khi ch\u1ecdn cho l\u01b0\u1edbi 22 kV t\u1ea1i c\u1ea3ng v\u00e0 khu c\u00f4ng nghi\u1ec7p<\/h1><p class=\"lead\">B\u00e0i vi\u1ebft ph\u00e2n t\u00edch c\u1ea5u t\u1ea1o c\u00e1p ba l\u00f5i 12,7\/22(24) kV theo TCVN 5935-2 \/ IEC 60502-2, \u0111i\u1ec7n tr\u01b0\u1eddng trong l\u1edbp c\u00e1ch \u0111i\u1ec7n XLPE, vai tr\u00f2 m\u00e0n ch\u1eafn v\u00e0 gi\u00e1p b\u0103ng th\u00e9p k\u00e9p, ki\u1ec3m tra b\u1eb1ng t\u00ednh to\u00e1n c\u1ee1 3\u00d7240 mm\u00b2 (\u0111i\u1ec7n tr\u1edf, s\u1ee5t \u00e1p, c\u00f4ng su\u1ea5t, ng\u1eafn m\u1ea1ch, d\u00f2ng n\u1ea1p, kh\u1ed1i l\u01b0\u1ee3ng, b\u00e1n k\u00ednh u\u1ed1n, l\u1ef1c k\u00e9o), so s\u00e1nh DSTA v\u1edbi SWA, ph\u00e2n \u0111\u1ecbnh ranh gi\u1edbi v\u1edbi c\u00e1p tang cu\u1ed1n cho thi\u1ebft b\u1ecb di \u0111\u1ed9ng v\u00e0 n\u00eau danh m\u1ee5c h\u1ed3 s\u01a1 c\u1ea7n y\u00eau c\u1ea7u, g\u1ed3m b\u1ed9 ch\u1ee9ng nh\u1eadn c\u1ee7a FeiChun.<\/p><div class=\"badges\"><span class=\"badge\">12,7\/22(24) kV<\/span><span class=\"badge\">TCVN 5935-2 \/ IEC 60502-2<\/span><span class=\"badge\">Ru\u1ed9t Cu c\u1ea5p 2 \u00e9p ch\u1eb7t \u00b7 240 mm\u00b2<\/span><span class=\"badge\">XLPE 5,5 mm \u00b7 m\u00e0n ch\u1eafn b\u0103ng \u0111\u1ed3ng<\/span><span class=\"badge\">Gi\u00e1p b\u0103ng th\u00e9p k\u00e9p DSTA<\/span><span class=\"badge\">90 \u00b0C \u00b7 ng\u1eafn m\u1ea1ch 250 \u00b0C<\/span><span class=\"badge\">L\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh<\/span><span class=\"badge\">FeiChun: CE \u00b7 UKCA \u00b7 VDE \u00b7 EAC \u00b7 ATEX \u00b7 IECEx<\/span><\/div><\/div><\/header><main class=\"wrap\"><div class=\"provenance\"><strong>Ngu\u1ed3n d\u1eef li\u1ec7u.<\/strong> C\u1ea5u t\u1ea1o v\u00e0 ti\u00eau chu\u1ea9n t\u1eeb catalog c\u00f4ng khai c\u1ee7a c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ea1i l\u00fd c\u00e1p 12,7\/22(24) kV<sup class=\"ref-n\">[2]<\/sup><sup class=\"ref-n\">[3]<\/sup><sup class=\"ref-n\">[4]<\/sup>; y\u00eau c\u1ea7u th\u1eed t\u1eeb t\u00e0i li\u1ec7u v\u1ec1 IEC 60502-2<sup class=\"ref-n\">[7]<\/sup><sup class=\"ref-n\">[8]<\/sup><sup class=\"ref-n\">[6]<\/sup><sup class=\"ref-n\">[9]<\/sup>; so s\u00e1nh gi\u00e1p th\u00e9p t\u1eeb c\u00e1c t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt v\u1ec1 DSTA, STA v\u00e0 SWA<sup class=\"ref-n\">[11]<\/sup><sup class=\"ref-n\">[12]<\/sup><sup class=\"ref-n\">[13]<\/sup>. C\u00e1c con s\u1ed1 t\u00ednh (\u0111i\u1ec7n tr\u01b0\u1eddng, s\u1ee5t \u00e1p, c\u00f4ng su\u1ea5t, ng\u1eafn m\u1ea1ch, d\u00f2ng n\u1ea1p, l\u1ef1c k\u00e9o) do t\u00e1c gi\u1ea3 t\u00ednh theo c\u00f4ng th\u1ee9c trong b\u00e0i. <b>\u0110\u01b0\u1eddng k\u00ednh ngo\u00e0i (\u2248 80 mm) v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng (\u2248 12 590 kg\/km) l\u1ea5y t\u1eeb b\u1ea3ng tham kh\u1ea3o c\u1ee7a m\u1ed9t h\u00e3ng cho b\u1ea3n ch\u1ed1ng th\u1ea5m -W<sup class=\"ref-n\">[1]<\/sup>; d\u00f2ng cho ph\u00e9p ch\u01b0a c\u00f3 b\u1ea3ng c\u00f4ng khai cho \u0111\u00fang m\u00e3 n\u00e0y (m\u1ed1c 500 A l\u00e0 b\u1ea3ng thi\u1ebft k\u1ebf tham chi\u1ebfu cho c\u00e1p 6,35\/11 kV<sup class=\"ref-n\">[9]<\/sup>). S\u1ed1 li\u1ec7u ch\u00ednh th\u1ee9c cho c\u00e1p c\u1ee7a FeiChun (k\u00edch th\u01b0\u1edbc, kh\u1ed1i l\u01b0\u1ee3ng, \u0111i\u1ec7n tr\u1edf \u0111o, ti\u1ebft di\u1ec7n m\u00e0n ch\u1eafn, d\u00f2ng cho ph\u00e9p) ph\u1ea3i l\u1ea5y t\u1eeb b\u1ea3ng d\u1eef li\u1ec7u v\u00e0 bi\u00ean b\u1ea3n th\u1eed c\u1ee7a FeiChun.<\/b> S\u1ed1 li\u1ec7u c\u00e1c ngu\u1ed3n c\u00f3 th\u1ec3 l\u1ec7ch nhau (v\u00ed d\u1ee5 \u0111i\u1ec7n \u00e1p th\u1eed 2,5 hay 3,5 l\u1ea7n U0).<\/div><nav class=\"toc\"><strong>M\u1ee5c l\u1ee5c<\/strong><ol><li><a href=\"#s1\">T\u1ed5ng quan v\u00e0 c\u00e1ch \u0111\u1ecdc k\u00fd hi\u1ec7u<\/a><\/li><li><a href=\"#s2\">C\u1ea5u t\u1ea1o<\/a><\/li><li><a href=\"#s3\">\u0110i\u1ec7n tr\u01b0\u1eddng v\u00e0 m\u00e0n ch\u1eafn<\/a><\/li><li><a href=\"#s4\">Th\u00f4ng s\u1ed1 theo ti\u00eau chu\u1ea9n<\/a><\/li><li><a href=\"#s5\">C\u00e1c ph\u00e9p th\u1eed \u0111i\u1ec7n<\/a><\/li><li><a href=\"#s6\">T\u00ednh to\u00e1n cho 3\u00d7240<\/a><\/li><li><a href=\"#s7\">So s\u00e1nh: DSTA, SWA, c\u00f3 v\u00e0 kh\u00f4ng ch\u1ed1ng th\u1ea5m<\/a><\/li><li><a href=\"#s8\">\u1ee8ng d\u1ee5ng t\u1ea1i c\u1ea3ng v\u00e0 khu c\u00f4ng nghi\u1ec7p<\/a><\/li><li><a href=\"#s9\">Ranh gi\u1edbi: tang cu\u1ed1n, x\u00edch d\u1eabn c\u00e1p, k\u00e9o l\u00ea<\/a><\/li><li><a href=\"#s10\">FeiChun: tuy\u1ebfn trung th\u1ebf c\u1ed1 \u0111\u1ecbnh v\u00e0 \u0111o\u1ea1n di \u0111\u1ed9ng<\/a><\/li><li><a href=\"#s11\">D\u1eef li\u1ec7u c\u1ea7n y\u00eau c\u1ea7u khi \u0111\u1eb7t h\u00e0ng<\/a><\/li><li><a href=\"#s12\">Ch\u1ee9ng nh\u1eadn FeiChun<\/a><\/li><li><a href=\"#faq\">H\u1ecfi \u0111\u00e1p<\/a><\/li><li><a href=\"#src\">Ngu\u1ed3n<\/a><\/li><\/ol><\/nav><section id=\"s1\"><h2>1. T\u1ed5ng quan v\u00e0 c\u00e1ch \u0111\u1ecdc k\u00fd hi\u1ec7u<\/h2><p>Cu\/XLPE\/PVC\/DSTA\/PVC l\u00e0 c\u00e1ch vi\u1ebft t\u1eaft t\u00ean c\u00e1p: ru\u1ed9t <b>Cu<\/b> (\u0111\u1ed3ng), c\u00e1ch \u0111i\u1ec7n <b>XLPE<\/b>, <b>PVC<\/b> l\u00e0 l\u1edbp b\u1ecdc ph\u00e2n c\u00e1ch, <b>DSTA<\/b> (Double Steel Tape Armoured) l\u00e0 gi\u00e1p hai l\u1edbp b\u0103ng th\u00e9p m\u1ea1 k\u1ebdm, PVC cu\u1ed1i l\u00e0 v\u1ecf ngo\u00e0i<sup class=\"ref-n\">[1]<\/sup><sup class=\"ref-n\">[2]<\/sup>. M\u00e3 <b>3\u00d7240<\/b> g\u1ed3m ba l\u00f5i pha, m\u1ed7i l\u00f5i 240 mm\u00b2 \u0111\u1ed3ng, t\u1ed5ng 720 mm\u00b2. C\u00e1p d\u00f9ng cho ph\u00e2n ph\u1ed1i \u0111i\u1ec7n trung th\u1ebf ng\u1ea7m t\u1ea1i khu c\u00f4ng nghi\u1ec7p, t\u00f2a nh\u00e0 l\u1edbn v\u00e0 tr\u1ea1m \u0111i\u1ec7n<sup class=\"ref-n\">[1]<\/sup>, l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh<sup class=\"ref-n\">[5]<\/sup>.<\/p><p>Ba \u0111i\u1ec3m v\u1ec1 k\u00fd hi\u1ec7u th\u01b0\u1eddng b\u1ecb b\u1ecf qua:<\/p><ul><li><b>T\u00ean ng\u1eafn kh\u00f4ng ghi m\u00e0n ch\u1eafn.<\/b> \u1ede c\u1ea5p \u0111i\u1ec7n \u00e1p n\u00e0y c\u00e1p c\u00f3 m\u00e0n ch\u1eafn b\u00e1n d\u1eabn tr\u00ean ru\u1ed9t v\u00e0 tr\u00ean c\u00e1ch \u0111i\u1ec7n, c\u00f9ng m\u00e0n ch\u1eafn kim lo\u1ea1i (b\u0103ng \u0111\u1ed3ng ho\u1eb7c s\u1ee3i \u0111\u1ed3ng) cho t\u1eebng l\u00f5i; nhi\u1ec1u catalog ghi r\u00f5 l\u00e0 Cu\/XLPE\/<b>CTS<\/b>\/PVC\/DSTA\/PVC-W<sup class=\"ref-n\">[3]<\/sup><sup class=\"ref-n\">[4]<\/sup>. C\u1ea7n x\u00e1c nh\u1eadn c\u1ea5u t\u1ea1o m\u00e0n ch\u1eafn v\u00e0 ti\u1ebft di\u1ec7n c\u1ee7a n\u00f3.<\/li><li><b>12,7\/22(24) kV v\u00e0 12\/20(24) kV.<\/b> U0 = 22\/\u221a3 \u2248 12,7 kV l\u00e0 \u0111i\u1ec7n \u00e1p pha-\u0111\u1ea5t c\u1ee7a l\u01b0\u1edbi 22 kV; IEC 60502-2 li\u1ec7t k\u00ea c\u1ea5p 12\/20(24) kV v\u1edbi Um = 24 kV<sup class=\"ref-n\">[5]<\/sup><sup class=\"ref-n\">[6]<\/sup>. Hai c\u00e1ch ghi c\u00f9ng chi\u1ec1u d\u00e0y c\u00e1ch \u0111i\u1ec7n danh \u0111\u1ecbnh 5,5 mm trong b\u1ea3ng c\u1ee7a h\u00e3ng<sup class=\"ref-n\">[1]<\/sup>. K\u00fd hi\u1ec7u U0\/U(Um) v\u00e0 lo\u1ea1i h\u1ec7 th\u1ed1ng (A, B) quy\u1ebft \u0111\u1ecbnh U0 c\u1ea7n ch\u1ecdn<sup class=\"ref-n\">[6]<\/sup>.<\/li><li><b>H\u1eadu t\u1ed1 -W<\/b> ch\u1ec9 b\u1ea3n ch\u1ed1ng th\u1ea5m (ru\u1ed9t c\u00f3 v\u1eadt li\u1ec7u ch\u1ed1ng th\u1ea5m, th\u00eam l\u1edbp ch\u1ed1ng th\u1ea5m d\u1ecdc c\u00e1p)<sup class=\"ref-n\">[1]<\/sup><sup class=\"ref-n\">[4]<\/sup>.<\/li><\/ul><div class=\"scroll\"><table class=\"cmp\" style=\"min-width:900px\"><caption>\u0110\u1eb7c t\u00ednh ch\u00ednh (theo catalog c\u00f4ng khai)<\/caption><thead><tr><th>H\u1ea1ng m\u1ee5c<\/th><th>Gi\u00e1 tr\u1ecb<\/th><th>\u00dd ngh\u0129a k\u1ef9 thu\u1eadt<\/th><\/tr><\/thead><tbody><tr><td>\u0110i\u1ec7n \u00e1p danh \u0111\u1ecbnh<\/td><td>12,7\/22(24) kV; U0 = 12,7 kV, U = 22 kV, Um = 24 kV<sup class=\"ref-n\">[2]<\/sup><sup class=\"ref-n\">[6]<\/sup><\/td><td>l\u01b0\u1edbi ph\u00e2n ph\u1ed1i 22 kV<\/td><\/tr><tr><td>Ru\u1ed9t d\u1eabn<\/td><td>\u0111\u1ed3ng, tr\u00f2n xo\u1eafn n\u00e9n ch\u1eb7t, c\u1ea5p 2 (IEC 60228)<sup class=\"ref-n\">[3]<\/sup><sup class=\"ref-n\">[4]<\/sup><\/td><td>gi\u1ea3m \u0111\u01b0\u1eddng k\u00ednh so v\u1edbi ru\u1ed9t kh\u00f4ng n\u00e9n<\/td><\/tr><tr><td>C\u00e1ch \u0111i\u1ec7n<\/td><td>XLPE, d\u00e0y danh \u0111\u1ecbnh 5,5 mm<sup class=\"ref-n\">[1]<\/sup><\/td><td>90 \u00b0C li\u00ean t\u1ee5c<\/td><\/tr><tr><td>M\u00e0n ch\u1eafn<\/td><td>b\u00e1n d\u1eabn + b\u0103ng \u0111\u1ed3ng (ho\u1eb7c s\u1ee3i v\u00e0 b\u0103ng \u0111\u1ed3ng)<sup class=\"ref-n\">[3]<\/sup><sup class=\"ref-n\">[4]<\/sup><\/td><td>l\u00e0m \u0111\u1ec1u \u0111i\u1ec7n tr\u01b0\u1eddng; d\u1eabn d\u00f2ng ch\u1ea1m \u0111\u1ea5t<\/td><\/tr><tr><td>Gi\u00e1p<\/td><td>hai l\u1edbp b\u0103ng th\u00e9p m\u1ea1 k\u1ebdm, d\u00e0y danh \u0111\u1ecbnh 0,8 mm<sup class=\"ref-n\">[1]<\/sup><\/td><td>b\u1ea3o v\u1ec7 c\u01a1 h\u1ecdc, ch\u1ecbu n\u00e9n<\/td><\/tr><tr><td>V\u1ecf ngo\u00e0i<\/td><td>PVC, d\u00e0y danh \u0111\u1ecbnh 3,7 mm<sup class=\"ref-n\">[1]<\/sup><\/td><td>che gi\u00e1p th\u00e9p kh\u1ecfi \u0103n m\u00f2n<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n<\/td><td>TCVN 5935-2:2013 \/ IEC 60502-2:2014; TCCS 17:2021\/EVN<sup class=\"ref-n\">[2]<\/sup><sup class=\"ref-n\">[3]<\/sup><\/td><td>chu\u1ea9n c\u00e1p trung th\u1ebf c\u1ee7a EVN<\/td><\/tr><\/tbody><\/table><\/div><\/section><section id=\"s2\"><h2>2. C\u1ea5u t\u1ea1o: t\u1eeb ru\u1ed9t \u0111\u1ed3ng \u00e9p ch\u1eb7t \u0111\u1ebfn v\u1ecf PVC<\/h2><p>T\u1eeb trong ra ngo\u00e0i, m\u1ed7i l\u00f5i g\u1ed3m: ru\u1ed9t \u0111\u1ed3ng \u00e9p ch\u1eb7t, m\u00e0n ch\u1eafn ru\u1ed9t b\u00e1n d\u1eabn, c\u00e1ch \u0111i\u1ec7n XLPE, m\u00e0n ch\u1eafn c\u00e1ch \u0111i\u1ec7n b\u00e1n d\u1eabn, b\u0103ng \u0111\u1ed3ng. Ba l\u00f5i xo\u1eafn quanh l\u1edbp ch\u00e8n, ngo\u00e0i l\u00e0 l\u1edbp b\u1ecdc ph\u00e2n c\u00e1ch, hai l\u1edbp b\u0103ng th\u00e9p m\u1ea1 k\u1ebdm qu\u1ea5n ng\u01b0\u1ee3c chi\u1ec1u v\u00e0 v\u1ecf PVC<sup class=\"ref-n\">[2]<\/sup><sup class=\"ref-n\">[1]<\/sup>. \u1ede b\u1ea3n -W, ru\u1ed9t v\u00e0 kho\u1ea3ng tr\u1ed1ng gi\u1eefa c\u00e1c l\u00f5i c\u00f3 v\u1eadt li\u1ec7u ch\u1ed1ng th\u1ea5m<sup class=\"ref-n\">[4]<\/sup>.<\/p><div class=\"svg\"><svg viewBox=\"0 0 1040 540\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"S\u01a1 \u0111\u1ed3 m\u1eb7t c\u1eaft c\u00e1p Cu\/XLPE\/PVC\/DSTA\/PVC 12,7\/22(24) kV 3x240: ba l\u00f5i c\u00f3 m\u00e0n ch\u1eafn b\u00e1n d\u1eabn v\u00e0 b\u0103ng \u0111\u1ed3ng, l\u1edbp b\u1ecdc ph\u00e2n c\u00e1ch, hai l\u1edbp gi\u00e1p b\u0103ng th\u00e9p, v\u1ecf PVC\"><rect width=\"1040\" height=\"540\" fill=\"#0e1a1e\"\/><circle cx=\"260\" cy=\"265\" r=\"228\" fill=\"#23272b\" stroke=\"#0a1014\" 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fill=\"#e9c46a\"\/><circle cx=\"139.4\" cy=\"333.0\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"136.5\" cy=\"325.2\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"135.5\" cy=\"316.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"136.5\" cy=\"308.7\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"139.4\" cy=\"300.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"144.2\" cy=\"294.0\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"150.4\" cy=\"288.5\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"157.8\" cy=\"284.6\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"165.9\" cy=\"282.6\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"174.2\" cy=\"282.6\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"182.3\" cy=\"284.6\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"189.7\" cy=\"288.5\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"195.9\" cy=\"294.0\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"200.6\" cy=\"300.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"203.6\" cy=\"308.7\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"213.2\" cy=\"316.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"212.4\" cy=\"325.4\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"209.9\" cy=\"333.5\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"205.9\" cy=\"341.0\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"200.6\" cy=\"347.5\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"194.0\" cy=\"352.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"186.6\" cy=\"356.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"178.4\" cy=\"359.3\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"170.0\" cy=\"360.1\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"161.6\" cy=\"359.3\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"153.5\" cy=\"356.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"146.0\" cy=\"352.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"139.5\" cy=\"347.5\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"134.1\" cy=\"341.0\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"130.1\" cy=\"333.5\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"127.7\" cy=\"325.4\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"126.8\" cy=\"316.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"127.7\" cy=\"308.5\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"130.1\" cy=\"300.4\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"134.1\" cy=\"292.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"139.5\" cy=\"286.4\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"146.0\" cy=\"281.0\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"153.5\" cy=\"277.0\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"161.6\" cy=\"274.6\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"170.0\" cy=\"273.8\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"178.4\" cy=\"274.6\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"186.6\" cy=\"277.0\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"194.0\" cy=\"281.0\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"200.6\" cy=\"286.4\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"205.9\" cy=\"292.9\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"209.9\" cy=\"300.4\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"212.4\" cy=\"308.5\" r=\"3.6\" fill=\"#e9c46a\"\/><circle cx=\"260.0\" cy=\"161.1\" r=\"11\" fill=\"#38c8e8\" stroke=\"#0a1014\"\/><text x=\"260.0\" y=\"166.1\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">1<\/text><circle cx=\"296.0\" cy=\"123.1\" r=\"11\" fill=\"#e8c37b\" stroke=\"#0a1014\"\/><text x=\"296.0\" y=\"128.1\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">2<\/text><circle cx=\"350.0\" cy=\"386.9\" r=\"11\" fill=\"#5fd88a\" stroke=\"#0a1014\"\/><text x=\"350.0\" y=\"391.9\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">3<\/text><circle cx=\"107.8\" cy=\"379.1\" r=\"11\" fill=\"#c98aff\" stroke=\"#0a1014\"\/><text x=\"107.8\" y=\"384.1\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">4<\/text><circle cx=\"260.0\" cy=\"265.0\" r=\"11\" fill=\"#ffb454\" stroke=\"#0a1014\"\/><text x=\"260.0\" y=\"270.0\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">5<\/text><circle cx=\"361.0\" cy=\"440.5\" r=\"11\" fill=\"#ff9f5a\" stroke=\"#0a1014\"\/><text x=\"361.0\" y=\"445.5\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">6<\/text><circle cx=\"260.0\" cy=\"47.0\" r=\"11\" fill=\"#ff777f\" stroke=\"#0a1014\"\/><text x=\"260.0\" y=\"52.0\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">7<\/text><text x=\"560\" y=\"50\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"16\" fill=\"#eef6f8\" font-weight=\"bold\">3\u00d7240 mm\u00b2 12,7\/22(24) kV (s\u01a1 \u0111\u1ed3)<\/text><circle cx=\"580\" cy=\"95\" r=\"12\" fill=\"#38c8e8\"\/><text x=\"580\" y=\"100\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">1<\/text><text x=\"604\" y=\"93\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"15.5\" fill=\"#eef6f8\" font-weight=\"bold\">Ru\u1ed9t \u0111\u1ed3ng tr\u00f2n xo\u1eafn \u00e9p ch\u1eb7t, 240 mm\u00b2<\/text><text x=\"604\" y=\"113\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12.5\" fill=\"#9cc0cc\" font-weight=\"normal\">c\u1ea5p 2, IEC 60228; b\u1ea3n -W c\u00f3 v\u1eadt li\u1ec7u ch\u1ed1ng th\u1ea5m ru\u1ed9t<\/text><circle cx=\"580\" cy=\"157\" r=\"12\" fill=\"#e8c37b\"\/><text x=\"580\" y=\"162\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">2<\/text><text x=\"604\" y=\"155\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"15.5\" fill=\"#eef6f8\" font-weight=\"bold\">M\u00e0n ch\u1eafn ru\u1ed9t (b\u00e1n d\u1eabn)<\/text><text x=\"604\" y=\"175\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12.5\" fill=\"#9cc0cc\" font-weight=\"normal\">l\u00e0m \u0111\u1ec1u \u0111i\u1ec7n tr\u01b0\u1eddng quanh ru\u1ed9t, \u00e9p \u0111\u1ed3ng th\u1eddi v\u1edbi c\u00e1ch \u0111i\u1ec7n<\/text><circle cx=\"580\" cy=\"219\" r=\"12\" fill=\"#5fd88a\"\/><text x=\"580\" y=\"224\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">3<\/text><text x=\"604\" y=\"217\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"15.5\" fill=\"#eef6f8\" font-weight=\"bold\">C\u00e1ch \u0111i\u1ec7n XLPE, d\u00e0y danh \u0111\u1ecbnh 5,5 mm<\/text><text x=\"604\" y=\"237\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12.5\" fill=\"#9cc0cc\" font-weight=\"normal\">90 \u00b0C li\u00ean t\u1ee5c, 250 \u00b0C ng\u1eafn m\u1ea1ch t\u1ed1i \u0111a 5 s<\/text><circle cx=\"580\" cy=\"281\" r=\"12\" fill=\"#c98aff\"\/><text x=\"580\" y=\"286\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">4<\/text><text x=\"604\" y=\"279\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"15.5\" fill=\"#eef6f8\" font-weight=\"bold\">M\u00e0n ch\u1eafn c\u00e1ch \u0111i\u1ec7n b\u00e1n d\u1eabn + b\u0103ng \u0111\u1ed3ng<\/text><text x=\"604\" y=\"299\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12.5\" fill=\"#9cc0cc\" font-weight=\"normal\">b\u0103ng \u0111\u1ed3ng d\u1eabn d\u00f2ng s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t; ti\u1ebft di\u1ec7n theo \u0111\u1eb7t h\u00e0ng<\/text><circle cx=\"580\" cy=\"343\" r=\"12\" fill=\"#ffb454\"\/><text x=\"580\" y=\"348\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">5<\/text><text x=\"604\" y=\"341\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"15.5\" fill=\"#eef6f8\" font-weight=\"bold\">L\u1edbp ch\u00e8n v\u00e0 l\u1edbp b\u1ecdc ph\u00e2n c\u00e1ch<\/text><text x=\"604\" y=\"361\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12.5\" fill=\"#9cc0cc\" font-weight=\"normal\">gi\u1eef tr\u00f2n; b\u1ea3n -W th\u00eam b\u0103ng tr\u01b0\u01a1ng n\u1edf ch\u1ed1ng th\u1ea5m d\u1ecdc<\/text><circle cx=\"580\" cy=\"405\" r=\"12\" fill=\"#ff9f5a\"\/><text x=\"580\" y=\"410\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">6<\/text><text x=\"604\" y=\"403\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"15.5\" fill=\"#eef6f8\" font-weight=\"bold\">Gi\u00e1p b\u0103ng th\u00e9p m\u1ea1 k\u1ebdm k\u00e9p (DSTA)<\/text><text x=\"604\" y=\"423\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12.5\" fill=\"#9cc0cc\" font-weight=\"normal\">hai l\u1edbp b\u0103ng qu\u1ea5n ng\u01b0\u1ee3c chi\u1ec1u; ch\u1ecbu n\u00e9n, che ph\u1ee7 li\u00ean t\u1ee5c<\/text><circle cx=\"580\" cy=\"467\" r=\"12\" fill=\"#ff777f\"\/><text x=\"580\" y=\"472\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#0a1014\" font-weight=\"bold\">7<\/text><text x=\"604\" y=\"465\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"15.5\" fill=\"#eef6f8\" font-weight=\"bold\">V\u1ecf ngo\u00e0i PVC<\/text><text x=\"604\" y=\"485\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12.5\" fill=\"#9cc0cc\" font-weight=\"normal\">d\u00e0y danh \u0111\u1ecbnh 3,7 mm; ch\u1ed1ng \u0103n m\u00f2n gi\u00e1p th\u00e9p<\/text><text x=\"520\" y=\"528\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#7fa4b0\" font-weight=\"normal\">Minh h\u1ecda nguy\u00ean l\u00fd theo IEC 60502-2; t\u1ef7 l\u1ec7 ch\u1ec9 mang t\u00ednh s\u01a1 \u0111\u1ed3, k\u00edch th\u01b0\u1edbc v\u00e0 s\u1ed1 l\u1edbp th\u1eadt theo b\u1ea3ng d\u1eef li\u1ec7u FeiChun<\/text><\/svg><div class=\"svg-caption\">H\u00ecnh 1. S\u01a1 \u0111\u1ed3 m\u1eb7t c\u1eaft Cu\/XLPE\/PVC\/DSTA\/PVC 12,7\/22(24) kV 3\u00d7240 (minh h\u1ecda nguy\u00ean l\u00fd, kh\u00f4ng theo t\u1ef7 l\u1ec7).<\/div><\/div><div class=\"note\"><b>V\u1ec1 thi\u1ebft k\u1ebf ri\u00eang c\u1ee7a FeiChun.<\/b> S\u1ed1 s\u1ee3i v\u00e0 \u0111\u01b0\u1eddng k\u00ednh s\u1ee3i \u0111\u1ed3ng, h\u1ee3p ch\u1ea5t b\u00e1n d\u1eabn, ti\u1ebft di\u1ec7n b\u0103ng \u0111\u1ed3ng, lo\u1ea1i b\u0103ng ch\u1ed1ng th\u1ea5m, b\u01b0\u1edbc qu\u1ea5n gi\u00e1p v\u00e0 h\u1ee3p ch\u1ea5t PVC l\u00e0 th\u00f4ng s\u1ed1 nh\u00e0 m\u00e1y; b\u00e0i n\u00e0y kh\u00f4ng suy \u0111o\u00e1n c\u00e1c gi\u00e1 tr\u1ecb \u0111\u00f3. H\u00e3y y\u00eau c\u1ea7u b\u1ea3ng c\u1ea5u t\u1ea1o v\u00e0 bi\u00ean b\u1ea3n th\u1eed theo \u0111\u00fang m\u00e3 3\u00d7240 12,7\/22(24) kV.<\/div><\/section><section id=\"s3\"><h2>3. \u0110i\u1ec7n tr\u01b0\u1eddng v\u00e0 m\u00e0n ch\u1eafn: v\u00ec sao c\u00e1p trung th\u1ebf kh\u00e1c c\u00e1p h\u1ea1 \u00e1p<\/h2><p>\u1ede c\u00e1p l\u00f5i tr\u00f2n \u0111\u1ed3ng t\u00e2m, \u0111i\u1ec7n tr\u01b0\u1eddng trong c\u00e1ch \u0111i\u1ec7n gi\u1ea3m theo b\u00e1n k\u00ednh v\u00e0 l\u1edbn nh\u1ea5t \u1edf b\u1ec1 m\u1eb7t ru\u1ed9t:<\/p><div class=\"formula\"><b>E(r) = U0 \/ (r \u00b7 ln(R\/r<sub>c<\/sub>)), E<sub>max<\/sub> = U0 \/ (r<sub>c<\/sub> \u00b7 ln(R\/r<sub>c<\/sub>))<\/b><\/div><p>V\u1edbi U0 = 12,70 kV, r<sub>c<\/sub> = 9,05 mm (ru\u1ed9t \u00d8 18,1 mm<sup class=\"ref-n\">[1]<\/sup>) v\u00e0 R = 14,55 mm (c\u1ed9ng 5,5 mm c\u00e1ch \u0111i\u1ec7n; s\u01a1 \u0111\u1ed3 t\u00ednh b\u1ecf qua b\u1ec1 d\u00e0y m\u00e0n b\u00e1n d\u1eabn): <b>E<sub>max<\/sub> \u2248 2,96 kV\/mm<\/b> \u1edf b\u1ec1 m\u1eb7t ru\u1ed9t, \u2248 1,84 kV\/mm \u1edf m\u00e9p ngo\u00e0i, trung b\u00ecnh U0\/t \u2248 2,31 kV\/mm. T\u1ef7 l\u1ec7 E<sub>max<\/sub>\/E<sub>tb<\/sub> \u2248 1,28.<\/p><div class=\"svg\"><svg viewBox=\"0 0 900 400\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"C\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n tr\u01b0\u1eddng trong l\u1edbp c\u00e1ch \u0111i\u1ec7n XLPE 5,5 mm \u1edf U0 = 12,7 kV: gi\u1ea3m t\u1eeb kho\u1ea3ng 2,96 kV\/mm \u1edf b\u1ec1 m\u1eb7t ru\u1ed9t xu\u1ed1ng kho\u1ea3ng 1,84 kV\/mm \u1edf m\u00e9p ngo\u00e0i\"><rect width=\"900\" height=\"400\" fill=\"#0e1a1e\"\/><text x=\"20\" y=\"32\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"16\" fill=\"#eef6f8\" font-weight=\"bold\">C\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n tr\u01b0\u1eddng trong l\u1edbp c\u00e1ch \u0111i\u1ec7n XLPE (U0 = 12,7 kV, t\u00ednh cho l\u00f5i tr\u00f2n \u0111\u1ed3ng t\u00e2m)<\/text><line x1=\"90\" y1=\"330.0\" x2=\"820\" y2=\"330.0\" stroke=\"#2a4650\"\/><text x=\"80\" y=\"334.0\" text-anchor=\"end\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">1,5<\/text><line x1=\"90\" y1=\"250.6\" x2=\"820\" y2=\"250.6\" stroke=\"#2a4650\"\/><text x=\"80\" y=\"254.6\" text-anchor=\"end\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">2,0<\/text><line x1=\"90\" y1=\"171.2\" x2=\"820\" y2=\"171.2\" stroke=\"#2a4650\"\/><text x=\"80\" y=\"175.2\" text-anchor=\"end\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">2,5<\/text><line x1=\"90\" y1=\"91.8\" x2=\"820\" y2=\"91.8\" stroke=\"#2a4650\"\/><text x=\"80\" y=\"95.8\" text-anchor=\"end\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">3,0<\/text><text x=\"20\" y=\"200\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">kV\/mm<\/text><polyline points=\"90.0,98.8 102.2,103.5 114.3,108.1 126.5,112.6 138.7,117.1 150.8,121.4 163.0,125.7 175.2,129.9 187.3,134.0 199.5,138.0 211.7,142.0 223.8,145.8 236.0,149.7 248.2,153.4 260.3,157.1 272.5,160.7 284.7,164.3 296.8,167.7 309.0,171.2 321.2,174.5 333.3,177.9 345.5,181.1 357.7,184.3 369.8,187.5 382.0,190.6 394.2,193.6 406.3,196.6 418.5,199.6 430.7,202.5 442.8,205.4 455.0,208.2 467.2,211.0 479.3,213.7 491.5,216.4 503.7,219.0 515.8,221.6 528.0,224.2 540.2,226.8 552.3,229.3 564.5,231.7 576.7,234.1 588.8,236.5 601.0,238.9 613.2,241.2 625.3,243.5 637.5,245.8 649.7,248.0 661.8,250.2 674.0,252.4 686.2,254.5 698.3,256.6 710.5,258.7 722.7,260.7 734.8,262.8 747.0,264.8 759.2,266.7 771.3,268.7 783.5,270.6 795.7,272.5 807.8,274.4 820.0,276.2\" fill=\"none\" stroke=\"#38c8e8\" stroke-width=\"4\"\/><line x1=\"90\" y1=\"201.4\" x2=\"820\" y2=\"201.4\" stroke=\"#e8c37b\" stroke-width=\"2\" stroke-dasharray=\"7 5\"\/><text x=\"816\" y=\"193.4\" text-anchor=\"end\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"13\" fill=\"#e8c37b\" font-weight=\"normal\">trung b\u00ecnh U0\/t \u2248 2,31 kV\/mm<\/text><circle cx=\"90.0\" cy=\"98.8\" r=\"6\" fill=\"#ff777f\"\/><text x=\"104.0\" y=\"92.8\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"13\" fill=\"#ff777f\" font-weight=\"bold\">E max \u2248 2,96 kV\/mm t\u1ea1i b\u1ec1 m\u1eb7t ru\u1ed9t (r = 9,05 mm)<\/text><circle cx=\"820.0\" cy=\"276.2\" r=\"6\" fill=\"#5fd88a\"\/><text x=\"810.0\" y=\"300.2\" text-anchor=\"end\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"13\" fill=\"#5fd88a\" font-weight=\"bold\">\u2248 1,84 kV\/mm t\u1ea1i m\u00e9p ngo\u00e0i (r = 14,55 mm)<\/text><text x=\"90.0\" y=\"352\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">9,05<\/text><text x=\"216.1\" y=\"352\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">10<\/text><text x=\"348.8\" y=\"352\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">11<\/text><text x=\"481.5\" y=\"352\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">12<\/text><text x=\"614.3\" y=\"352\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">13<\/text><text x=\"747.0\" y=\"352\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">14<\/text><text x=\"820.0\" y=\"352\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">14,55<\/text><text x=\"455.0\" y=\"376\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">b\u00e1n k\u00ednh t\u00ednh t\u1eeb t\u00e2m ru\u1ed9t (mm)<\/text><\/svg><div class=\"svg-caption\">H\u00ecnh 2. C\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n tr\u01b0\u1eddng trong l\u1edbp c\u00e1ch \u0111i\u1ec7n XLPE 5,5 mm (t\u00ednh gi\u1ea3i t\u00edch cho l\u00f5i tr\u00f2n \u0111\u1ed3ng t\u00e2m, b\u1ecf qua m\u00e0n b\u00e1n d\u1eabn).<\/div><\/div><p><b>Di\u1ec5n gi\u1ea3i k\u1ef9 thu\u1eadt (t\u00e1c gi\u1ea3).<\/b> \u0110i\u1ec7n tr\u01b0\u1eddng t\u1eadp trung nh\u1ea5t t\u1ea1i ranh gi\u1edbi ru\u1ed9t: m\u1ecdi nh\u00f4 nh\u1ecdn c\u1ee7a b\u1ec1 m\u1eb7t ru\u1ed9t ho\u1eb7c l\u1ed7 kh\u00ed, t\u1ea1p ch\u1ea5t \u1edf \u0111\u00f3 d\u1ec5 g\u00e2y ph\u00f3ng \u0111i\u1ec7n c\u1ee5c b\u1ed9. V\u00ec v\u1eady m\u00e0n b\u00e1n d\u1eabn nh\u1eb5n, d\u00ednh ch\u1eb7t v\u00e0o c\u00e1ch \u0111i\u1ec7n v\u00e0 c\u00e1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u00e9p c\u00f9ng l\u00fac v\u1edbi hai m\u00e0n b\u00e1n d\u1eabn trong m\u00f4i tr\u01b0\u1eddng s\u1ea1ch l\u00e0 \u0111i\u1ec1u ki\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng ch\u00ednh c\u1ee7a c\u00e1p trung th\u1ebf; m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t n\u00eau ba l\u1edbp ph\u1ea3i \u00e9p trong c\u00f9ng m\u1ed9t l\u1ea7n \u0111i qua \u0111\u1ea7u \u00e9p (triple extrusion) v\u00e0 trong ph\u00f2ng s\u1ea1ch<sup class=\"ref-n\">[9]<\/sup>. Th\u1eed ph\u00f3ng \u0111i\u1ec7n c\u1ee5c b\u1ed9 \u1edf 1,73 U0 (m\u1ee5c 5) nh\u1eb1m ph\u00e1t hi\u1ec7n ch\u00ednh nh\u1eefng khuy\u1ebft t\u1eadt n\u00e0y<sup class=\"ref-n\">[7]<\/sup>.<\/p><p>M\u00e0n ch\u1eafn kim lo\u1ea1i (b\u0103ng \u0111\u1ed3ng) c\u00f3 hai nhi\u1ec7m v\u1ee5: gi\u1eef \u0111i\u1ec7n tr\u01b0\u1eddng b\u00ean trong l\u00f5i v\u00e0 l\u00e0m \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng ch\u1ea1m \u0111\u1ea5t v\u1ec1 ngu\u1ed3n. Ti\u1ebft di\u1ec7n b\u0103ng \u0111\u1ed3ng v\u00ec th\u1ebf ph\u1ea3i \u0111\u01b0\u1ee3c ch\u1ecdn theo d\u00f2ng s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t v\u00e0 th\u1eddi gian c\u1eaft c\u1ee7a l\u01b0\u1edbi (m\u1ee5c 6); m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t m\u00f4 t\u1ea3 m\u00e0n ch\u1eafn \u201ckho\u1ea3ng 16 mm\u00b2 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng\u201d cho c\u00e1p 11 kV<sup class=\"ref-n\">[9]<\/sup>, nh\u01b0ng con s\u1ed1 n\u00e0y kh\u00e1c nhau gi\u1eefa c\u00e1c h\u00e3ng v\u00e0 c\u1ea5p \u0111i\u1ec7n \u00e1p.<\/p><\/section><section id=\"s4\"><h2>4. Th\u00f4ng s\u1ed1 theo ti\u00eau chu\u1ea9n v\u00e0 theo b\u1ea3ng tham kh\u1ea3o<\/h2><div class=\"scroll\"><table class=\"data\" style=\"min-width:800px\"><caption>K\u00edch th\u01b0\u1edbc v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng tham kh\u1ea3o (b\u1ea3n ch\u1ed1ng th\u1ea5m -W c\u1ee7a m\u1ed9t h\u00e3ng)<\/caption><thead><tr><th>Th\u00f4ng s\u1ed1<\/th><th>Gi\u00e1 tr\u1ecb<\/th><th>Ghi ch\u00fa<\/th><\/tr><\/thead><tbody><tr><td>\u0110\u01b0\u1eddng k\u00ednh ru\u1ed9t g\u1ea7n \u0111\u00fang<\/td><td>18,1 mm<sup class=\"ref-n\">[1]<\/sup><\/td><td>b\u1ea3ng c\u1ee7a h\u00e3ng; ngu\u1ed3n 11 kV ghi 18,4 mm<sup class=\"ref-n\">[10]<\/sup><\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0y c\u00e1ch \u0111i\u1ec7n danh \u0111\u1ecbnh<\/td><td>5,5 mm<sup class=\"ref-n\">[1]<\/sup><\/td><td>cho 12,7\/22(24) kV<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0y l\u1edbp b\u1ecdc ph\u00e2n c\u00e1ch<\/td><td>2,0 mm<sup class=\"ref-n\">[1]<\/sup><\/td><td><\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0y gi\u00e1p b\u0103ng th\u00e9p<\/td><td>0,8 mm<sup class=\"ref-n\">[1]<\/sup><\/td><td>hai l\u1edbp b\u0103ng<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0y v\u1ecf ngo\u00e0i danh \u0111\u1ecbnh<\/td><td>3,7 mm<sup class=\"ref-n\">[1]<\/sup><\/td><td>PVC<\/td><\/tr><tr><td>\u0110\u01b0\u1eddng k\u00ednh c\u00e1p g\u1ea7n \u0111\u00fang<\/td><td>80 mm<sup class=\"ref-n\">[1]<\/sup><\/td><td>b\u1ea3ng 11 kV tham chi\u1ebfu: 85 mm<sup class=\"ref-n\">[9]<\/sup><\/td><\/tr><tr><td>Kh\u1ed1i l\u01b0\u1ee3ng g\u1ea7n \u0111\u00fang<\/td><td>12 590 kg\/km<sup class=\"ref-n\">[1]<\/sup><\/td><td>b\u1ea3ng 11 kV tham chi\u1ebfu: 13 200 kg\/km<sup class=\"ref-n\">[9]<\/sup><\/td><\/tr><\/tbody><\/table><\/div><div class=\"scroll\"><table class=\"data\" style=\"min-width:900px\"><caption>C\u01a1 – nhi\u1ec7t – \u0111i\u1ec7n<\/caption><thead><tr><th>Th\u00f4ng s\u1ed1<\/th><th>Gi\u00e1 tr\u1ecb<\/th><th>Ghi ch\u00fa<\/th><\/tr><\/thead><tbody><tr><td>Nhi\u1ec7t \u0111\u1ed9 ru\u1ed9t<\/td><td>90 \u00b0C l\u00e0m vi\u1ec7c; 250 \u00b0C ng\u1eafn m\u1ea1ch, t\u1ed1i \u0111a 5 s; kh\u1ea9n c\u1ea5p 130 \u00b0C<sup class=\"ref-n\">[3]<\/sup><sup class=\"ref-n\">[14]<\/sup><\/td><td>gi\u00e1 tr\u1ecb kh\u1ea9n c\u1ea5p theo m\u1ed9t ngu\u1ed3n cho c\u00e1p XLPE<\/td><\/tr><tr><td>\u0110i\u1ec7n tr\u1edf DC 20 \u00b0C (240 mm\u00b2 \u0111\u1ed3ng)<\/td><td>0,0754 \u03a9\/km<sup class=\"ref-n\">[10]<\/sup><\/td><td>\u1edf 90 \u00b0C kho\u1ea3ng 0,0961 \u03a9\/km<\/td><\/tr><tr><td>\u0110i\u1ec7n c\u1ea3m tham chi\u1ebfu<\/td><td>0,275 mH\/km<sup class=\"ref-n\">[10]<\/sup><\/td><td>c\u00e1p 3\u00d7240 lo\u1ea1i 11 kV; c\u00e1p 22 kV c\u00e1ch \u0111i\u1ec7n d\u00e0y h\u01a1n<\/td><\/tr><tr><td>B\u00e1n k\u00ednh u\u1ed1n t\u1ed1i thi\u1ec3u<\/td><td>12\u00d7D<sup class=\"ref-n\">[14]<\/sup><sup class=\"ref-n\">[9]<\/sup>; l\u1ea5y 15\u00d7D cho an to\u00e0n<\/td><td>12\u00d780 = 960 mm; 15\u00d780 = 1 200 mm<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n<\/td><td>IEC 60502-2:2014; TCVN 5935-2:2013<sup class=\"ref-n\">[1]<\/sup><sup class=\"ref-n\">[2]<\/sup><\/td><td>ph\u1ee5 ki\u1ec7n: IEC 60502-4<sup class=\"ref-n\">[5]<\/sup><\/td><\/tr><\/tbody><\/table><\/div><\/section><section id=\"s5\"><h2>5. C\u00e1c ph\u00e9p th\u1eed \u0111i\u1ec7n: \u0111\u1ecdc \u0111\u00fang bi\u00ean b\u1ea3n<\/h2><p>IEC 60502 chia th\u1eed nghi\u1ec7m th\u00e0nh th\u1eed th\u01b0\u1eddng xuy\u00ean (m\u1ecdi chi\u1ec1u d\u00e0i c\u00e1p), th\u1eed m\u1eabu v\u00e0 th\u1eed \u0111i\u1ec3n h\u00ecnh (ch\u1ee9ng minh thi\u1ebft k\u1ebf)<sup class=\"ref-n\">[6]<\/sup>. V\u1edbi c\u00e1p trung th\u1ebf, bi\u00ean b\u1ea3n th\u1eed \u0111i\u1ec3n h\u00ecnh c\u1ee7a lab \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn quan tr\u1ecdng h\u01a1n catalog.<\/p><div class=\"scroll\"><table class=\"cmp\" style=\"min-width:1000px\"><caption>C\u00e1c ph\u00e9p th\u1eed \u0111i\u1ec7n ch\u00ednh<\/caption><thead><tr><th>Ph\u00e9p th\u1eed<\/th><th>\u0110i\u1ec1u ki\u1ec7n<\/th><th>Ghi ch\u00fa<\/th><th>Ngu\u1ed3n<\/th><\/tr><\/thead><tbody><tr><td>Ph\u00f3ng \u0111i\u1ec7n c\u1ee5c b\u1ed9 (PD)<\/td><td>n\u00e2ng l\u00ean 2 U0 gi\u1eef 10 s r\u1ed3i gi\u1ea3m xu\u1ed1ng 1,73 U0; kh\u00f4ng c\u00f3 ph\u00f3ng \u0111i\u1ec7n v\u01b0\u1ee3t \u0111\u1ed9 nh\u1ea1y khai b\u00e1o; v\u1edbi U0 = 12,7 kV: 1,73 U0 \u2248 22,0 kV<\/td><td>\u0111\u1ed9 nh\u1ea1y 10 pC ho\u1eb7c t\u1ed1t h\u01a1n (th\u01b0\u1eddng xuy\u00ean); 5 pC ho\u1eb7c t\u1ed1t h\u01a1n (\u0111i\u1ec3n h\u00ecnh)<\/td><td><sup class=\"ref-n\">[7]<\/sup><\/td><\/tr><tr><td>Th\u1eed \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u 5 ph\u00fat<\/td><td>kho\u1ea3ng 2,5 \u2013 3,5 l\u1ea7n U0 t\u00f9y ngu\u1ed3n; m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t n\u00eau 3,5 U0 (\u2248 44,5 kV)<\/td><td>ngu\u1ed3n ch\u00eanh nhau: l\u1ea5y theo phi\u00ean b\u1ea3n IEC 60502-2 v\u00e0 bi\u00ean b\u1ea3n<\/td><td><sup class=\"ref-n\">[15]<\/sup><sup class=\"ref-n\">[9]<\/sup><\/td><\/tr><tr><td>Th\u1eed \u0111i\u1ec3n h\u00ecnh<\/td><td>g\u1ed3m th\u1eed \u0111i\u1ec7n \u00e1p d\u00e0i gi\u1edd, xung s\u00e9t, u\u1ed1n k\u00e8m PD l\u1ea1i<sup class=\"ref-n\">[9]<\/sup><\/td><td>y\u00eau c\u1ea7u b\u00e1o c\u00e1o c\u00f2n hi\u1ec7u l\u1ef1c c\u1ee7a lab \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn<\/td><td><sup class=\"ref-n\">[9]<\/sup><\/td><\/tr><tr><td>X\u00e2m nh\u1eadp n\u01b0\u1edbc<\/td><td>IEC 60502-2 ed. 2 b\u1ed5 sung y\u00eau c\u1ea7u li\u00ean quan x\u00e2m nh\u1eadp n\u01b0\u1edbc<sup class=\"ref-n\">[8]<\/sup><\/td><td>\u00e1p d\u1ee5ng cho b\u1ea3n ch\u1ed1ng th\u1ea5m -W<\/td><td><sup class=\"ref-n\">[8]<\/sup><\/td><\/tr><\/tbody><\/table><\/div><div class=\"note\"><b>C\u00e1ch \u0111\u1ecdc bi\u00ean b\u1ea3n.<\/b> Ki\u1ec3m tra: (1) m\u00e3 c\u00e1p v\u00e0 c\u1ea5p \u0111i\u1ec7n \u00e1p 12,7\/22(24) kV kh\u1edbp; (2) ti\u1ebft di\u1ec7n 240 mm\u00b2 ho\u1eb7c ti\u1ebft di\u1ec7n \u0111\u01b0\u1ee3c ph\u00e9p ngo\u1ea1i suy; (3) \u0111\u1ed9 nh\u1ea1y PD; (4) c\u1ea5u t\u1ea1o m\u00e0n ch\u1eafn v\u00e0 gi\u00e1p c\u1ee7a m\u1eabu th\u1eed c\u00f3 gi\u1ed1ng c\u00e1p giao h\u00e0ng kh\u00f4ng; (5) ng\u00e0y th\u1eed v\u00e0 lab th\u1eed.<\/div><\/section><section id=\"s6\"><h2>6. T\u00ednh to\u00e1n cho 3\u00d7240 mm\u00b2 \u0111\u1ed3ng \u1edf 22 kV<\/h2><div class=\"formula\"><b>U0 = 22 \/ \u221a3 \u2248 12,70 kV; R<sub>90 \u00b0C<\/sub> = 0,0754 \u00b7 1,275 \u2248 0,0961 \u03a9\/km; X = 2\u03c0 \u00b7 50 \u00b7 0,275\u00b710\u207b\u00b3 \u2248 0,0864 \u03a9\/km<\/b><\/div><p><b>S\u1ee5t \u00e1p<\/b> \u0394U = \u221a3 \u00b7 I \u00b7 L \u00b7 (R cos \u03c6 + X sin \u03c6), v\u1edbi cos \u03c6 = 0,9 (gi\u1ea3 \u0111\u1ecbnh), \u0111i\u1ec7n tr\u1edf \u1edf 90 \u00b0C v\u00e0 \u0111i\u1ec7n c\u1ea3m tham chi\u1ebfu<sup class=\"ref-n\">[10]<\/sup>. Tr\u00ean tuy\u1ebfn trung th\u1ebf, s\u1ee5t \u00e1p th\u01b0\u1eddng nh\u1ecf; d\u00f2ng cho ph\u00e9p v\u1ec1 nhi\u1ec7t v\u00e0 ng\u1eafn m\u1ea1ch m\u1edbi th\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh.<\/p><div class=\"scroll\"><table class=\"data\" style=\"min-width:900px\"><caption>S\u1ee5t \u00e1p v\u00e0 c\u00f4ng su\u1ea5t truy\u1ec1n t\u1ea3i (22 kV, ba pha, cos \u03c6 = 0,9)<\/caption><thead><tr><th>D\u00f2ng<\/th><th>C\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn<\/th><th>1 km<\/th><th>3 km<\/th><th>5 km<\/th><th>10 km<\/th><\/tr><\/thead><tbody><tr><td>200 A<\/td><td>7,6 MVA<\/td><td>\u2248 43 V (0,20 %)<\/td><td>\u2248 129 V (0,59 %)<\/td><td>\u2248 215 V (0,98 %)<\/td><td>\u2248 430 V (1,96 %)<\/td><\/tr><tr><td>300 A<\/td><td>11,4 MVA<\/td><td>\u2248 65 V (0,29 %)<\/td><td>\u2248 194 V (0,88 %)<\/td><td>\u2248 323 V (1,47 %)<\/td><td>\u2248 645 V (2,93 %)<\/td><\/tr><tr><td>400 A<\/td><td>15,2 MVA<\/td><td>\u2248 86 V (0,39 %)<\/td><td>\u2248 258 V (1,17 %)<\/td><td>\u2248 430 V (1,96 %)<\/td><td>\u2248 860 V (3,91 %)<\/td><\/tr><\/tbody><\/table><\/div><div class=\"formula\"><b>I<sub>ng\u1eafn m\u1ea1ch<\/sub> = k \u00b7 S \/ \u221at, k = 143 (Cu, XLPE 90 \u2192 250 \u00b0C)<\/b><\/div><div class=\"scroll\"><table class=\"data\" style=\"min-width:700px\"><caption>D\u00f2ng ng\u1eafn m\u1ea1ch ch\u1ecbu \u0111\u01b0\u1ee3c c\u1ee7a ru\u1ed9t (240 mm\u00b2 m\u1ed7i l\u00f5i)<\/caption><thead><tr><th>t<\/th><th>0,5 s<\/th><th>1 s<\/th><th>3 s<\/th><th>5 s<\/th><\/tr><\/thead><tbody><tr><td>I<sub>cp<\/sub> ru\u1ed9t<\/td><td>48,5 kA<\/td><td>34,3 kA<\/td><td>19,8 kA<\/td><td>15,3 kA<\/td><\/tr><\/tbody><\/table><\/div><p>Gi\u00e1 tr\u1ecb 1 s tr\u00f9ng v\u1edbi 34,34 kA trong b\u1ea3ng tham chi\u1ebfu<sup class=\"ref-n\">[10]<\/sup>. <b>M\u00e0n ch\u1eafn l\u00e0 m\u1eaft x\u00edch y\u1ebfu h\u01a1n ru\u1ed9t nhi\u1ec1u.<\/b> \u0110\u1ec3 minh h\u1ecda, n\u1ebfu l\u1ea5y k = 143 (gi\u1ea3 \u0111\u1ecbnh c\u1ee7a t\u00e1c gi\u1ea3; k th\u1eadt theo IEC 60949 v\u00e0 s\u1ed1 li\u1ec7u nh\u00e0 s\u1ea3n xu\u1ea5t), b\u0103ng \u0111\u1ed3ng c\u00f3 ti\u1ebft di\u1ec7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ch\u1ec9 ch\u1ecbu nh\u01b0 sau:<\/p><div class=\"scroll\"><table class=\"data\" style=\"min-width:800px\"><caption>Minh h\u1ecda: d\u00f2ng ch\u1ecbu \u0111\u01b0\u1ee3c c\u1ee7a m\u00e0n ch\u1eafn \u0111\u1ed3ng theo ti\u1ebft di\u1ec7n (1 s, k = 143 gi\u1ea3 \u0111\u1ecbnh)<\/caption><thead><tr><th>Ti\u1ebft di\u1ec7n m\u00e0n ch\u1eafn<\/th><th>16 mm\u00b2<\/th><th>25 mm\u00b2<\/th><th>35 mm\u00b2<\/th><th>50 mm\u00b2<\/th><th>70 mm\u00b2<\/th><\/tr><\/thead><tbody><tr><td>I<sub>cp<\/sub> 1 s<\/td><td>2,3 kA<\/td><td>3,6 kA<\/td><td>5,0 kA<\/td><td>7,2 kA<\/td><td>10,0 kA<\/td><\/tr><\/tbody><\/table><\/div><p>So s\u00e1nh ti\u1ebft di\u1ec7n m\u00e0n ch\u1eafn v\u1edbi d\u00f2ng ch\u1ea1m \u0111\u1ea5t v\u00e0 th\u1eddi gian c\u1eaft c\u1ee7a l\u01b0\u1edbi c\u1ee5 th\u1ec3; n\u1ebfu kh\u00f4ng \u0111\u1ee7, ph\u1ea3i y\u00eau c\u1ea7u m\u00e0n ch\u1eafn l\u1edbn h\u01a1n ho\u1eb7c b\u1ed5 sung d\u00e2y \u0111\u1ed3ng.<\/p><p><b>D\u00f2ng n\u1ea1p.<\/b> V\u1edbi \u03b5<sub>r<\/sub> \u2248 2,5 (gi\u1ea3 \u0111\u1ecbnh c\u1ee7a t\u00e1c gi\u1ea3), \u00d8 ru\u1ed9t 18,1 \u2013 19,3 mm v\u00e0 c\u00e1ch \u0111i\u1ec7n 5,5 mm, \u0111i\u1ec7n dung kho\u1ea3ng 0,29 \u2013 0,31 \u00b5F\/km v\u00e0 d\u00f2ng n\u1ea1p kho\u1ea3ng <b>1,2 A\/km m\u1ed7i pha<\/b> (I<sub>c<\/sub> = 2\u03c0 \u00b7 50 \u00b7 C \u00b7 U0), c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng kho\u1ea3ng 45 kvar\/km. V\u1edbi tuy\u1ebfn 10 km, d\u00f2ng n\u1ea1p kho\u1ea3ng 12 A: \u0111\u1ee7 nh\u1ecf \u0111\u1ec3 b\u1ecf qua \u1edf t\u1ea3i l\u1edbn nh\u01b0ng n\u00ean t\u00ednh khi c\u00e1p mang t\u1ea3i nh\u1eb9.<\/p><p><b>T\u1ed5n hao nhi\u1ec7t<\/b> ba pha P = 3 \u00b7 I\u00b2 \u00b7 R<sub>90 \u00b0C<\/sub>: kho\u1ea3ng <b>11,5 W\/m<\/b> \u1edf 200 A, <b>26,0 W\/m<\/b> \u1edf 300 A v\u00e0 <b>46,1 W\/m<\/b> \u1edf 400 A m\u1ed7i m\u1ea1ch (ch\u01b0a t\u00ednh t\u1ed5n hao \u0111i\u1ec7n m\u00f4i, m\u00e0n ch\u1eafn v\u00e0 gi\u00e1p).<\/p><p><b>D\u00f2ng cho ph\u00e9p.<\/b> Ph\u1ea3i t\u00ednh theo IEC 60287 v\u1edbi nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111i\u1ec7n tr\u1edf nhi\u1ec7t c\u1ee7a \u0111\u1ea5t, \u0111\u1ed9 s\u00e2u, s\u1ed1 m\u1ea1ch v\u00e0 kho\u1ea3ng c\u00e1ch. M\u1ed1c so s\u00e1nh: b\u1ea3ng thi\u1ebft k\u1ebf tham chi\u1ebfu cho c\u00e1p 3\u00d7240 \u0111\u1ed3ng XLPE\/SWA 6,35\/11 kV ch\u00f4n 0,8 m, 20 \u00b0C, 1,0 K\u00b7m\/W ghi kho\u1ea3ng 500 A<sup class=\"ref-n\">[9]<\/sup> (\u2248 19,1 MVA \u1edf 22 kV n\u1ebfu t\u1ea3i 500 A). C\u00e1p 22 kV c\u00e1ch \u0111i\u1ec7n d\u00e0y h\u01a1n n\u00ean d\u00f2ng th\u1ea5p h\u01a1n; gi\u00e1 tr\u1ecb n\u00e0y ch\u1ec9 l\u00e0 m\u1ed1c. \u0110\u1ec3 th\u1ea5y m\u1ee9c h\u1ec7 s\u1ed1 c\u00f3 th\u1ec3 gi\u1ea3m d\u00f2ng, h\u00e3y xem v\u00ed d\u1ee5: v\u1edbi c\u00e1c h\u1ec7 s\u1ed1 minh h\u1ecda 0,93 (nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea5t), 0,83 (\u0111\u1ea5t kh\u00f4) v\u00e0 0,65 (b\u1ed1n m\u1ea1ch ch\u00f4n chung) l\u1ea5y t\u1eeb m\u1ed9t ngu\u1ed3n cho c\u00e1p h\u1ea1 \u00e1p<sup class=\"ref-n\">[16]<\/sup>, d\u00f2ng c\u00f2n 500 \u00b7 0,93 \u00b7 0,83 \u00b7 0,65 \u2248 251 A, t\u1ee9c kho\u1ea3ng m\u1ed9t n\u1eeda. \u0110\u00e2y l\u00e0 v\u00ed d\u1ee5 minh h\u1ecda c\u01a1 ch\u1ebf gi\u1ea3m d\u00f2ng, kh\u00f4ng d\u00f9ng cho thi\u1ebft k\u1ebf.<\/p><div class=\"formula\"><b>Kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ed3ng l\u00fd thuy\u1ebft: 720 \u00b7 8,89 \u2248 6 401 kg\/km; c\u00e1p \u2248 12 590 kg\/km \u2192 \u0111\u1ed3ng chi\u1ebfm kho\u1ea3ng 51 %; ph\u1ea7n c\u00f2n l\u1ea1i \u2248 6 189 kg\/km<\/b><\/div><p>C\u00e1p n\u1eb7ng kho\u1ea3ng 12,6 kg\/m, n\u00ean thang c\u00e1p, \u1ed1ng v\u00e0 h\u1ed1 k\u00e9o ph\u1ea3i t\u00ednh theo kh\u1ed1i l\u01b0\u1ee3ng n\u00e0y. L\u1ef1c k\u00e9o b\u1eb1ng \u0111\u1ea7u k\u00e9o g\u1eafn l\u00ean ru\u1ed9t \u0111\u1ed3ng th\u01b0\u1eddng l\u1ea5y kho\u1ea3ng 50 N\/mm\u00b2<sup class=\"ref-n\">[17]<\/sup>, t\u1ee9c 720 \u00b7 50 = 36 kN; \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn ph\u1ed5 bi\u1ebfn c\u1ea7n x\u00e1c nh\u1eadn v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t. V\u00ec gi\u00e1p b\u0103ng th\u00e9p \u00edt ch\u1ecbu k\u00e9o (m\u1ee5c 7), tuy\u1ebfn k\u00e9o d\u00e0i ho\u1eb7c c\u00f3 \u0111o\u1ea1n d\u1ed1c c\u1ea7n t\u00ednh l\u1ea1i ph\u01b0\u01a1ng \u00e1n k\u00e9o.<\/p><\/section><section id=\"s7\"><h2>7. So s\u00e1nh: gi\u00e1p b\u0103ng th\u00e9p k\u00e9p, gi\u00e1p s\u1ee3i th\u00e9p v\u00e0 b\u1ea3n ch\u1ed1ng th\u1ea5m<\/h2><div class=\"scroll\"><table class=\"cmp\" style=\"min-width:1000px\"><caption>Ba c\u1ea5u h\u00ecnh b\u1ea3o v\u1ec7 c\u01a1 h\u1ecdc cho c\u00e1p ba l\u00f5i 22 kV<\/caption><thead><tr><th>Ti\u00eau ch\u00ed<\/th><th>DSTA (gi\u00e1p b\u0103ng th\u00e9p k\u00e9p)<\/th><th>SWA (gi\u00e1p s\u1ee3i th\u00e9p)<\/th><th>Kh\u00f4ng gi\u00e1p (Cu\/XLPE\/CTS\/PVC)<\/th><\/tr><\/thead><tbody><tr><td>Ch\u1ecbu n\u00e9n h\u01b0\u1edbng k\u00ednh, va \u0111\u1eadp ph\u00e2n b\u1ed1<\/td><td>t\u1ed1t; b\u0103ng li\u00ean t\u1ee5c, hai l\u1edbp qu\u1ea5n ng\u01b0\u1ee3c chi\u1ec1u<sup class=\"ref-n\">[11]<\/sup><sup class=\"ref-n\">[12]<\/sup><\/td><td>t\u1ed1t, nh\u01b0ng thi\u00ean v\u1ec1 ch\u1ecbu k\u00e9o v\u00e0 va \u0111\u1eadp c\u1ee5c b\u1ed9<\/td><td>ch\u1ec9 c\u00f3 v\u1ecf; c\u1ea7n b\u1ea3o v\u1ec7 ngo\u00e0i<\/td><\/tr><tr><td>Ch\u1ecbu k\u00e9o<\/td><td>h\u1ea1n ch\u1ebf; kh\u00f4ng h\u1ee3p v\u1edbi l\u1ef1c k\u00e9o l\u1edbn<sup class=\"ref-n\">[11]<\/sup><sup class=\"ref-n\">[13]<\/sup><\/td><td>cao; d\u00f9ng cho k\u00e9o d\u00e0i, \u0111o\u1ea1n th\u1eb3ng \u0111\u1ee9ng<sup class=\"ref-n\">[11]<\/sup><sup class=\"ref-n\">[12]<\/sup><sup class=\"ref-n\">[13]<\/sup><\/td><td>th\u1ea5p<\/td><\/tr><tr><td>\u0110\u1ed9 m\u1ec1m<\/td><td>k\u00e9m h\u01a1n gi\u00e1p s\u1ee3i<sup class=\"ref-n\">[11]<\/sup><\/td><td>m\u1ec1m h\u01a1n<\/td><td>m\u1ec1m nh\u1ea5t<\/td><\/tr><tr><td>Ch\u1ed1ng lo\u00e0i g\u1eb7m nh\u1ea5m<\/td><td>che ph\u1ee7 li\u00ean t\u1ee5c<sup class=\"ref-n\">[13]<\/sup><\/td><td>gi\u00e1p s\u1ee3i ng\u0103n g\u1eb7m nh\u1ea5m<sup class=\"ref-n\">[12]<\/sup><\/td><td>kh\u00f4ng<\/td><\/tr><tr><td>Kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 gi\u00e1<\/td><td>nh\u1eb9 v\u00e0 r\u1ebb h\u01a1n<sup class=\"ref-n\">[11]<\/sup><\/td><td>n\u1eb7ng v\u00e0 \u0111\u1eaft h\u01a1n<\/td><td>nh\u1eb9 nh\u1ea5t<\/td><\/tr><tr><td>H\u1ee3p v\u1edbi<\/td><td>tuy\u1ebfn ch\u00f4n, h\u00e0o c\u00e1p, \u0111o\u1ea1n ngang kh\u00f4ng ch\u1ecbu k\u00e9o d\u1ecdc l\u1edbn<\/td><td>tuy\u1ebfn k\u00e9o d\u00e0i, \u0111o\u1ea1n \u0111\u1ee9ng, n\u1ec1n c\u00f3 nguy c\u01a1 l\u00fan<\/td><td>trong nh\u00e0, m\u00e1ng c\u00f3 b\u1ea3o v\u1ec7 s\u1eb5n<\/td><\/tr><\/tbody><\/table><\/div><p>Gi\u00e1p th\u00e9p cho c\u00e1p m\u1ed9t l\u00f5i AC kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng v\u00ec g\u00e2y t\u1ed5n hao v\u00e0 n\u00f3ng do t\u1eeb tr\u01b0\u1eddng<sup class=\"ref-n\">[13]<\/sup>; c\u00e1p ba l\u00f5i nh\u01b0 3\u00d7240 kh\u00f4ng c\u00f3 v\u1ea5n \u0111\u1ec1 n\u00e0y v\u00ec t\u1eeb tr\u01b0\u1eddng ba pha tri\u1ec7t ti\u00eau.<\/p><div class=\"scroll\"><table class=\"cmp\" style=\"min-width:900px\"><caption>C\u00f3 v\u00e0 kh\u00f4ng ch\u1ed1ng th\u1ea5m (h\u1eadu t\u1ed1 -W)<\/caption><thead><tr><th>Ti\u00eau ch\u00ed<\/th><th>Kh\u00f4ng -W<\/th><th>B\u1ea3n -W<\/th><\/tr><\/thead><tbody><tr><td>Ru\u1ed9t<\/td><td>\u0111\u1ed3ng c\u1ea5p 2 \u00e9p ch\u1eb7t<\/td><td>\u0111\u1ed3ng c\u1ea5p 2 \u00e9p ch\u1eb7t, c\u00f3 v\u1eadt li\u1ec7u ch\u1ed1ng th\u1ea5m<sup class=\"ref-n\">[1]<\/sup><sup class=\"ref-n\">[4]<\/sup><\/td><\/tr><tr><td>Kho\u1ea3ng tr\u1ed1ng gi\u1eefa c\u00e1c l\u00f5i<\/td><td>l\u1edbp ch\u00e8n th\u00f4ng th\u01b0\u1eddng<\/td><td>c\u00f3 l\u1edbp ch\u1ed1ng th\u1ea5m d\u1ecdc c\u00e1p<sup class=\"ref-n\">[1]<\/sup><\/td><\/tr><tr><td>Khi v\u1ecf h\u1ecfng<\/td><td>n\u01b0\u1edbc c\u00f3 th\u1ec3 lan d\u1ecdc c\u00e1p<\/td><td>h\u1ea1n ch\u1ebf \u0111o\u1ea1n c\u00e1p b\u1ecb \u1ea9m (theo thi\u1ebft k\u1ebf b\u1ea3n -W)<\/td><\/tr><tr><td>N\u00ean c\u00e2n nh\u1eafc khi<\/td><td>tuy\u1ebfn kh\u00f4, trong tr\u1ea1m<\/td><td>m\u1ef1c n\u01b0\u1edbc ng\u1ea7m cao, ven bi\u1ec3n, ch\u1ecbu th\u1ee7y tri\u1ec1u (khuy\u1ebfn ngh\u1ecb c\u1ee7a t\u00e1c gi\u1ea3)<\/td><\/tr><\/tbody><\/table><\/div><div class=\"note\"><b>K\u1ebft lu\u1eadn k\u1ef9 thu\u1eadt.<\/b> Cu\/XLPE\/PVC\/DSTA\/PVC h\u1ee3p v\u1edbi tuy\u1ebfn ch\u00f4n v\u00e0 h\u00e0o c\u00e1p ngang trong khu c\u1ea3ng khi n\u1ec1n \u1ed5n \u0111\u1ecbnh; ch\u1ecdn SWA n\u1ebfu tuy\u1ebfn k\u00e9o d\u00e0i ho\u1eb7c c\u00f3 \u0111o\u1ea1n \u0111\u1ee9ng, ch\u1ecdn b\u1ea3n -W n\u1ebfu n\u01b0\u1edbc ng\u1ea7m l\u00e0 r\u1ee7i ro. Kh\u00f4ng c\u00f3 lo\u1ea1i n\u00e0o thay th\u1ebf c\u00e1p cho thi\u1ebft b\u1ecb di \u0111\u1ed9ng.<\/div><\/section><section id=\"s8\"><h2>8. \u1ee8ng d\u1ee5ng t\u1ea1i c\u1ea3ng v\u00e0 khu c\u00f4ng nghi\u1ec7p<\/h2><div class=\"imgcap\"><figure><svg viewBox=\"0 0 400 250\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"Ch\u00f4n tr\u1ef1c ti\u1ebfp\"><rect width=\"400\" height=\"250\" fill=\"#101a1e\"\/><text x=\"200\" y=\"22\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#9cc0cc\" font-weight=\"normal\">Ch\u00f4n tr\u1ef1c ti\u1ebfp<\/text><rect x=\"20\" y=\"50\" width=\"360\" height=\"150\" fill=\"#2a2620\"\/><line x1=\"20\" y1=\"50\" x2=\"380\" y2=\"50\" stroke=\"#5b6b73\" stroke-width=\"3\"\/><rect x=\"120\" y=\"120\" width=\"160\" height=\"56\" fill=\"#6d5f45\"\/><line x1=\"120\" y1=\"92\" x2=\"280\" y2=\"92\" stroke=\"#f2d13a\" stroke-width=\"5\" stroke-dasharray=\"10 6\"\/><rect x=\"160\" y=\"130\" width=\"80\" height=\"6\" fill=\"#8b939a\"\/><circle cx=\"200\" cy=\"150\" r=\"20\" fill=\"#23272b\" stroke=\"#c9a227\" stroke-width=\"3\"\/><circle cx=\"200\" cy=\"150\" r=\"13\" fill=\"#8b939a\"\/><line x1=\"304\" y1=\"50\" x2=\"304\" y2=\"176\" stroke=\"#38c8e8\" stroke-width=\"2\"\/><polygon points=\"304,50 300,60 308,60\" fill=\"#38c8e8\"\/><polygon points=\"304,176 300,166 308,166\" fill=\"#38c8e8\"\/><text x=\"312\" y=\"118\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#38c8e8\" font-weight=\"normal\">\u2248 0,8 m<\/text><text x=\"200\" y=\"86\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#f2d13a\" font-weight=\"normal\">b\u0103ng c\u1ea3nh b\u00e1o<\/text><text x=\"200\" y=\"216\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#e8c37b\" font-weight=\"normal\">ch\u00f4n tr\u1ef1c ti\u1ebfp: l\u1edbp c\u00e1t bao quanh<\/text><text x=\"200\" y=\"236\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">\u0111i\u1ec7n tr\u1edf nhi\u1ec7t \u0111\u1ea5t quy\u1ebft \u0111\u1ecbnh d\u00f2ng cho ph\u00e9p<\/text><\/svg><figcaption>0,8 m l\u00e0 \u0111\u1ed9 s\u00e2u c\u1ee7a \u0111i\u1ec1u ki\u1ec7n tham chi\u1ebfu \u0111\u1ec3 t\u00ednh d\u00f2ng; \u0111\u1ed9 s\u00e2u th\u1ef1c theo thi\u1ebft k\u1ebf.<\/figcaption><\/figure><figure><svg viewBox=\"0 0 400 250\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"\u1ed0ng qua \u0111\u01b0\u1eddng xe\"><rect width=\"400\" height=\"250\" fill=\"#101a1e\"\/><text x=\"200\" y=\"22\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#9cc0cc\" font-weight=\"normal\">\u1ed0ng qua \u0111\u01b0\u1eddng xe<\/text><rect x=\"20\" y=\"46\" width=\"360\" height=\"26\" fill=\"#3a4a52\"\/><rect x=\"60\" y=\"30\" width=\"80\" height=\"16\" rx=\"3\" fill=\"#22333b\" stroke=\"#e8c37b\"\/><circle cx=\"76\" cy=\"50\" r=\"6\" fill=\"#0a1014\" stroke=\"#e8c37b\"\/><circle cx=\"124\" cy=\"50\" r=\"6\" fill=\"#0a1014\" stroke=\"#e8c37b\"\/><rect x=\"20\" y=\"72\" width=\"360\" height=\"118\" fill=\"#2a2620\"\/><rect x=\"110\" y=\"104\" width=\"180\" height=\"62\" rx=\"6\" fill=\"#5b6b73\"\/><circle cx=\"160\" cy=\"135\" r=\"24\" fill=\"#101a1e\" stroke=\"#c9a227\" stroke-width=\"3\"\/><circle cx=\"160\" cy=\"135\" r=\"14\" fill=\"#8b939a\"\/><circle cx=\"240\" cy=\"135\" r=\"24\" fill=\"#101a1e\" stroke=\"#38c8e8\" stroke-width=\"2\" stroke-dasharray=\"5 4\"\/><text x=\"160\" y=\"178\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#e8c37b\" font-weight=\"normal\">c\u00e1p<\/text><text x=\"240\" y=\"178\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#38c8e8\" font-weight=\"normal\">\u1ed1ng d\u1ef1 ph\u00f2ng<\/text><text x=\"200\" y=\"214\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#e8c37b\" font-weight=\"normal\">qua \u0111\u01b0\u1eddng xe container<\/text><text x=\"200\" y=\"234\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">\u1ed1ng ch\u1ecbu t\u1ea3i; b\u1ecdc b\u00ea t\u00f4ng; b\u00e1n k\u00ednh u\u1ed1n khi v\u00e0o \u1ed1ng<\/text><\/svg><figcaption>C\u00e1p n\u1eb7ng kho\u1ea3ng 12,6 kg\/m: t\u00ednh l\u1ef1c k\u00e9o v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c h\u1ed1 k\u00e9o.<\/figcaption><\/figure><figure><svg viewBox=\"0 0 400 250\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"\u0110\u1ea7u c\u00e1p 22 kV\"><rect width=\"400\" height=\"250\" fill=\"#101a1e\"\/><text x=\"200\" y=\"22\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#9cc0cc\" font-weight=\"normal\">\u0110\u1ea7u c\u00e1p 22 kV<\/text><rect x=\"150\" y=\"36\" width=\"100\" height=\"10\" fill=\"#8b939a\"\/><rect x=\"186\" y=\"46\" width=\"28\" height=\"22\" fill=\"#c9a227\" stroke=\"#0a1014\"\/><path d=\"M190 68 h20 l12 60 h-44 z\" fill=\"#3a4a52\" stroke=\"#38c8e8\" stroke-width=\"2\"\/><rect x=\"188\" y=\"68\" width=\"24\" height=\"70\" fill=\"#e6dcc3\" stroke=\"#0a1014\"\/><rect x=\"176\" y=\"128\" width=\"48\" height=\"10\" fill=\"#c47a3a\"\/><rect x=\"170\" y=\"138\" width=\"60\" height=\"10\" fill=\"#8b939a\"\/><rect x=\"164\" y=\"148\" width=\"72\" height=\"50\" fill=\"#23272b\" stroke=\"#0a1014\"\/><path d=\"M230 133 C280 133 290 170 320 170\" fill=\"none\" stroke=\"#5fd88a\" stroke-width=\"3\"\/><text x=\"326\" y=\"174\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#5fd88a\" font-weight=\"normal\">n\u1ed1i \u0111\u1ea5t<\/text><text x=\"258\" y=\"64\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#c9a227\" font-weight=\"normal\">\u0111\u1ea7u c\u1ed1t<\/text><text x=\"262\" y=\"100\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#38c8e8\" font-weight=\"normal\">n\u00f3n \u1ee9ng su\u1ea5t<\/text><text x=\"70\" y=\"134\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#c47a3a\" font-weight=\"normal\">b\u0103ng \u0111\u1ed3ng<\/text><text x=\"70\" y=\"158\" text-anchor=\"start\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#8b939a\" font-weight=\"normal\">gi\u00e1p th\u00e9p<\/text><text x=\"200\" y=\"222\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#e8c37b\" font-weight=\"normal\">\u0111\u1ea7u c\u00e1p: x\u1eed l\u00fd m\u00e0n ch\u1eafn v\u00e0 gi\u00e1p<\/text><text x=\"200\" y=\"240\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">ph\u1ee5 ki\u1ec7n theo IEC 60502-4<\/text><\/svg><figcaption>N\u1ed1i \u0111\u1ea5t b\u0103ng \u0111\u1ed3ng v\u00e0 gi\u00e1p th\u00e9p \u1edf \u0111\u1ea7u c\u00e1p ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo d\u00f2ng s\u1ef1 c\u1ed1.<\/figcaption><\/figure><\/div><div class=\"scroll\"><table class=\"cmp\" style=\"min-width:950px\"><caption>Ki\u1ec3m tra theo k\u1ecbch b\u1ea3n<\/caption><thead><tr><th>K\u1ecbch b\u1ea3n<\/th><th>T\u1ea3i ch\u00ednh<\/th><th>C\u1ea7n ki\u1ec3m tra<\/th><\/tr><\/thead><tbody><tr><td>Tuy\u1ebfn 22 kV t\u1eeb tr\u1ea1m c\u1ea3ng \u0111\u1ebfn tr\u1ea1m bi\u1ebfn \u00e1p c\u1ea9u, b\u00e3i container<\/td><td>d\u00f2ng li\u00ean t\u1ee5c 200 \u2013 400 A; tuy\u1ebfn d\u00e0i<\/td><td>d\u00f2ng cho ph\u00e9p theo \u0111\u1ea5t, \u0111\u1ed9 s\u00e2u, s\u1ed1 m\u1ea1ch (m\u1ee5c 6); d\u00f2ng n\u1ea1p; \u0111\u1ea7u c\u00e1p<\/td><\/tr><tr><td>Qua \u0111\u01b0\u1eddng xe container<\/td><td>t\u1ea3i n\u00e9n v\u00e0 rung<\/td><td>\u1ed1ng ch\u1ecbu t\u1ea3i b\u1ecdc b\u00ea t\u00f4ng; \u1ed1ng d\u1ef1 ph\u00f2ng; b\u00e1n k\u00ednh u\u1ed1n kho\u1ea3ng 1 \u2013 1,2 m; l\u1ef1c k\u00e9o \u2264 gi\u00e1 tr\u1ecb \u0111\u00e3 t\u00ednh<\/td><\/tr><tr><td>N\u1ec1n y\u1ebfu, ven bi\u1ec3n, n\u01b0\u1edbc ng\u1ea7m cao<\/td><td>n\u01b0\u1edbc v\u00e0 \u0103n m\u00f2n<\/td><td>b\u1ea3n -W; v\u1ecf PVC c\u00f2n nguy\u00ean (gi\u00e1p th\u00e9p \u0103n m\u00f2n khi v\u1ecf h\u1ecfng); ki\u1ec3m tra v\u1ecf sau l\u1eafp \u0111\u1eb7t; h\u1ed1 n\u1ed1i k\u00edn<\/td><\/tr><tr><td>H\u00e0o c\u00e1p trong tr\u1ea1m<\/td><td>nhi\u1ec1u m\u1ea1ch c\u00f9ng tuy\u1ebfn<\/td><td>h\u1ec7 s\u1ed1 nh\u00f3m; t\u1ea3i nhi\u1ec7t 11,5 \u2013 46,1 W\/m m\u1ed7i m\u1ea1ch \u1edf 200 \u2013 400 A; kh\u1ed1i l\u01b0\u1ee3ng thang<\/td><\/tr><tr><td>\u0110\u1ea7u c\u00e1p v\u00e0 h\u1ed9p n\u1ed1i<\/td><td>\u1ee9ng su\u1ea5t \u0111i\u1ec7n t\u1ea1i ch\u1ed7 c\u1eaft m\u00e0n b\u00e1n d\u1eabn<\/td><td>ph\u1ee5 ki\u1ec7n \u0111\u00fang c\u1ea5p 24 kV theo IEC 60502-4<sup class=\"ref-n\">[5]<\/sup>; ng\u01b0\u1eddi l\u1eafp c\u00f3 ch\u1ee9ng ch\u1ec9; n\u1ed1i \u0111\u1ea5t b\u0103ng \u0111\u1ed3ng v\u00e0 gi\u00e1p<\/td><\/tr><tr><td>Thi\u1ebft b\u1ecb di \u0111\u1ed9ng: c\u1ea9u STS, RTG, t\u00e0u c\u1eafm \u0111i\u1ec7n b\u1edd<\/td><td>chuy\u1ec3n \u0111\u1ed9ng, u\u1ed1n, k\u00e9o<\/td><td>kh\u00f4ng d\u00f9ng c\u00e1p DSTA; d\u00f9ng c\u00e1p tang cu\u1ed1n trung th\u1ebf ho\u1eb7c c\u00e1p k\u1ebft n\u1ed1i b\u1edd chuy\u00ean d\u1ee5ng (m\u1ee5c 9, 10)<\/td><\/tr><\/tbody><\/table><\/div><div class=\"warn\"><b>Gi\u1edbi h\u1ea1n.<\/b> B\u00e0i n\u00e0y ch\u1ec9 tr\u00ecnh b\u00e0y s\u1ed1 li\u1ec7u c\u00f4ng khai v\u00e0 ph\u00e9p t\u00ednh s\u01a1 b\u1ed9; thi\u1ebft k\u1ebf tuy\u1ebfn 22 kV c\u1ea7n nghi\u00ean c\u1ee9u h\u1ec7 th\u1ed1ng (d\u00f2ng ng\u1eafn m\u1ea1ch, n\u1ed1i \u0111\u1ea5t, b\u1ea3o v\u1ec7, d\u00f2ng cho ph\u00e9p theo IEC 60287) do k\u1ef9 s\u01b0 c\u00f3 chuy\u00ean m\u00f4n th\u1ef1c hi\u1ec7n. C\u00e1p c\u00f3 v\u1ecf PVC kh\u00f4ng ph\u1ea3i c\u00e1p ch\u1ed1ng ch\u00e1y hay \u00edt kh\u00f3i kh\u00f4ng halogen; n\u1ebfu tuy\u1ebfn \u0111i trong h\u1ea7m k\u00edn ho\u1eb7c n\u01a1i \u0111\u00f4ng ng\u01b0\u1eddi, h\u00e3y \u0111\u1ed1i chi\u1ebfu h\u1ed3 s\u01a1 ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y.<\/div><\/section><section id=\"s9\"><h2>9. Ranh gi\u1edbi: tang cu\u1ed1n, x\u00edch d\u1eabn c\u00e1p, k\u00e9o l\u00ea<\/h2><p>Nhi\u1ec1u k\u1ef9 s\u01b0 c\u1ea3ng v\u00e0 m\u1ecf h\u1ecfi c\u00e1p 22 kV 3\u00d7240 cho c\u1ea3 tuy\u1ebfn, k\u1ec3 c\u1ea3 \u0111o\u1ea1n \u0111\u1ebfn thi\u1ebft b\u1ecb di \u0111\u1ed9ng. Ph\u1ea3i n\u00f3i r\u00f5: <b>c\u00e1p gi\u00e1p b\u0103ng th\u00e9p DSTA kh\u00f4ng d\u00f9ng cho c\u00e1c v\u1ecb tr\u00ed sau<\/b>. \u0110\u00e2y l\u00e0 c\u00e1p l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh; ru\u1ed9t c\u1ea5p 2 nhi\u1ec1u s\u1ee3i c\u1ee9ng; \u00d8 kho\u1ea3ng 80 mm, n\u1eb7ng kho\u1ea3ng 12,6 kg\/m, b\u00e1n k\u00ednh u\u1ed1n kho\u1ea3ng 1 \u2013 1,2 m; gi\u00e1p b\u0103ng th\u00e9p \u00edt ch\u1ecbu k\u00e9o v\u00e0 k\u00e9m m\u1ec1m<sup class=\"ref-n\">[11]<\/sup>. Ngu\u1ed3n c\u00f4ng khai kh\u00f4ng c\u00f4ng b\u1ed1 tu\u1ed5i th\u1ecd u\u1ed1n hay l\u1ef1c k\u00e9o \u0111\u1ed9ng c\u1ee7a lo\u1ea1i c\u00e1p n\u00e0y.<\/p><div class=\"imgcap\"><figure><svg viewBox=\"0 0 400 250\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"Tang cu\u1ed1n\"><rect width=\"400\" height=\"250\" fill=\"#101a1e\"\/><text x=\"200\" y=\"22\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#9cc0cc\" font-weight=\"normal\">Tang cu\u1ed1n<\/text><circle cx=\"150\" cy=\"125\" r=\"78\" fill=\"none\" stroke=\"#e8c37b\" stroke-width=\"7\"\/><circle cx=\"150\" cy=\"125\" r=\"66\" fill=\"none\" stroke=\"#c9a227\" stroke-width=\"7\"\/><circle cx=\"150\" cy=\"125\" r=\"54\" fill=\"none\" stroke=\"#e8c37b\" stroke-width=\"7\"\/><circle cx=\"150\" cy=\"125\" r=\"42\" fill=\"none\" stroke=\"#c9a227\" stroke-width=\"7\"\/><circle cx=\"150\" cy=\"125\" r=\"16\" fill=\"#22333b\" stroke=\"#38c8e8\" stroke-width=\"2\"\/><path d=\"M228 130 C280 160 330 176 385 180\" fill=\"none\" stroke=\"#c9a227\" stroke-width=\"7\" stroke-linecap=\"round\"\/><line x1=\"274\" y1=\"64\" x2=\"326\" y2=\"116\" stroke=\"#ff777f\" stroke-width=\"7\" stroke-linecap=\"round\"\/><line x1=\"274\" y1=\"116\" x2=\"326\" y2=\"64\" stroke=\"#ff777f\" stroke-width=\"7\" stroke-linecap=\"round\"\/><text x=\"200\" y=\"232\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#ff777f\" font-weight=\"normal\">cu\u1ed1n tang: kh\u00f4ng d\u00f9ng c\u00e1p gi\u00e1p b\u0103ng th\u00e9p<\/text><\/svg><figcaption>C\u1ea7n c\u00e1p tang cu\u1ed1n trung th\u1ebf c\u00f3 c\u1ea5p \u0111i\u1ec7n \u00e1p ph\u00f9 h\u1ee3p.<\/figcaption><\/figure><figure><svg viewBox=\"0 0 400 250\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"X\u00edch d\u1eabn c\u00e1p\"><rect width=\"400\" height=\"250\" fill=\"#101a1e\"\/><text x=\"200\" y=\"22\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#9cc0cc\" font-weight=\"normal\">X\u00edch d\u1eabn c\u00e1p<\/text><rect x=\"40\" y=\"72\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"40\" y=\"150\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"70\" y=\"72\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"70\" y=\"150\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"100\" y=\"72\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"100\" y=\"150\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"130\" y=\"72\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"130\" y=\"150\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"160\" y=\"72\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"160\" y=\"150\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"190\" y=\"72\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"190\" y=\"150\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"220\" y=\"72\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"220\" y=\"150\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"250\" y=\"72\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><rect x=\"250\" y=\"150\" width=\"26\" height=\"14\" fill=\"#22333b\" stroke=\"#38c8e8\"\/><path d=\"M266 79 A 40 40 0 0 1 266 157\" fill=\"none\" stroke=\"#38c8e8\" stroke-width=\"10\"\/><path d=\"M40 119 H270\" stroke=\"#c9a227\" stroke-width=\"7\"\/><line x1=\"304\" y1=\"92\" x2=\"356\" y2=\"144\" stroke=\"#ff777f\" stroke-width=\"7\" stroke-linecap=\"round\"\/><line x1=\"304\" y1=\"144\" x2=\"356\" y2=\"92\" stroke=\"#ff777f\" stroke-width=\"7\" stroke-linecap=\"round\"\/><text x=\"200\" y=\"200\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#ff777f\" font-weight=\"normal\">\u00d8 80 mm, kho\u1ea3ng 12,6 kg\/m, R u\u1ed1n \u2248 1 m<\/text><text x=\"200\" y=\"232\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#9cc0cc\" font-weight=\"normal\">x\u00edch d\u1eabn c\u00e1p: kh\u00f4ng ph\u00f9 h\u1ee3p<\/text><\/svg><figcaption>Gi\u00e1p b\u0103ng th\u00e9p c\u1ed1 \u0111\u1ecbnh kh\u00f4ng thi\u1ebft k\u1ebf cho u\u1ed1n chu k\u1ef3.<\/figcaption><\/figure><figure><svg viewBox=\"0 0 400 250\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"K\u00e9o l\u00ea (trailing)\"><rect width=\"400\" height=\"250\" fill=\"#101a1e\"\/><text x=\"200\" y=\"22\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"14\" fill=\"#9cc0cc\" font-weight=\"normal\">K\u00e9o l\u00ea (trailing)<\/text><line x1=\"20\" y1=\"190\" x2=\"380\" y2=\"190\" stroke=\"#5b6b73\" stroke-width=\"3\"\/><rect x=\"40\" y=\"110\" width=\"90\" height=\"55\" rx=\"6\" fill=\"#22333b\" stroke=\"#e8c37b\"\/><rect x=\"34\" y=\"165\" width=\"102\" height=\"20\" rx=\"10\" fill=\"#3a4a52\"\/><path d=\"M130 160 C170 190 200 165 240 189 S320 172 350 188\" fill=\"none\" stroke=\"#c9a227\" stroke-width=\"7\" stroke-linecap=\"round\"\/><line x1=\"274\" y1=\"94\" x2=\"326\" y2=\"146\" stroke=\"#ff777f\" stroke-width=\"7\" stroke-linecap=\"round\"\/><line x1=\"274\" y1=\"146\" x2=\"326\" y2=\"94\" stroke=\"#ff777f\" stroke-width=\"7\" stroke-linecap=\"round\"\/><text x=\"200\" y=\"232\" text-anchor=\"middle\" font-family=\"Arial,Helvetica,sans-serif\" font-size=\"12\" fill=\"#ff777f\" font-weight=\"normal\">k\u00e9o l\u00ea: d\u00f9ng c\u00e1p cao su cho thi\u1ebft b\u1ecb di \u0111\u1ed9ng<\/text><\/svg><figcaption>V\u1ecf PVC v\u00e0 gi\u00e1p th\u00e9p kh\u00f4ng thay \u0111\u01b0\u1ee3c c\u00e1p di \u0111\u1ed9ng chuy\u00ean d\u1ee5ng.<\/figcaption><\/figure><\/div><div class=\"scroll\"><table class=\"cmp\" style=\"min-width:900px\"><caption>Ranh gi\u1edbi \u1ee9ng d\u1ee5ng v\u00e0 h\u01b0\u1edbng thay th\u1ebf<\/caption><thead><tr><th>V\u1ecb tr\u00ed<\/th><th>V\u00ec sao kh\u00f4ng d\u00f9ng DSTA<\/th><th>H\u01b0\u1edbng thay th\u1ebf<\/th><\/tr><\/thead><tbody><tr><td>Tang cu\u1ed1n, tang l\u00f2 xo<\/td><td>u\u1ed1n l\u1eb7p; gi\u00e1p th\u00e9p c\u1ed1 \u0111\u1ecbnh; nhi\u1ec7t t\u00edch t\u1ee5 theo l\u1edbp cu\u1ed1n<\/td><td>c\u00e1p tang cu\u1ed1n trung th\u1ebf, v\u00ed d\u1ee5 h\u1ecd PROTOLON c\u1ee7a FeiChun<sup class=\"ref-n\">[20]<\/sup><sup class=\"ref-n\">[21]<\/sup> (c\u1ea5p 3,6\/6 v\u00e0 6\/10 kV theo c\u00e1c b\u00e0i n\u00e0y)<\/td><\/tr><tr><td>X\u00edch d\u1eabn c\u00e1p<\/td><td>c\u1ea7n ru\u1ed9t m\u1ec1m v\u00e0 k\u1ebft c\u1ea5u cho u\u1ed1n chu k\u1ef3; \u00d8 80 mm qu\u00e1 l\u1edbn<\/td><td>c\u00e1p x\u00edch d\u1eabn chuy\u00ean d\u1ee5ng; x\u00e1c nh\u1eadn b\u00e1n k\u00ednh v\u00e0 tu\u1ed5i th\u1ecd theo h\u00e3ng x\u00edch<\/td><\/tr><tr><td>K\u00e9o l\u00ea tr\u00ean n\u1ec1n<\/td><td>v\u1ecf PVC v\u00e0 gi\u00e1p th\u00e9p kh\u00f4ng ch\u1ecbu m\u00e0i m\u00f2n, k\u00e9o l\u00ea<\/td><td>c\u00e1p cao su cho thi\u1ebft b\u1ecb di \u0111\u1ed9ng, v\u00ed d\u1ee5 h\u1ecd NSSH\u00d6U-J cho h\u1ea1 \u00e1p<sup class=\"ref-n\">[22]<\/sup><\/td><\/tr><\/tbody><\/table><\/div><div class=\"note\"><b>L\u01b0u \u00fd v\u1ec1 22 kV di \u0111\u1ed9ng.<\/b> C\u00e1c b\u00e0i c\u1ee7a FeiChun v\u1ec1 c\u00e1p tang cu\u1ed1n trung th\u1ebf c\u00f4ng b\u1ed1 \u1edf c\u1ea5p 3,6\/6 v\u00e0 6\/10 kV. V\u1edbi thi\u1ebft b\u1ecb di \u0111\u1ed9ng d\u00f9ng l\u01b0\u1edbi 22 kV, h\u00e3y h\u1ecfi FeiChun v\u1ec1 c\u1ea5p \u0111i\u1ec7n \u00e1p v\u00e0 c\u1ea5u t\u1ea1o c\u00e1p tang cu\u1ed1n ph\u00f9 h\u1ee3p; b\u00e0i n\u00e0y kh\u00f4ng suy \u0111o\u00e1n kh\u1ea3 n\u0103ng cung c\u1ea5p.<\/div><\/section><section id=\"s10\"><h2>10. FeiChun: tuy\u1ebfn trung th\u1ebf c\u1ed1 \u0111\u1ecbnh v\u00e0 \u0111o\u1ea1n di \u0111\u1ed9ng trong c\u00f9ng m\u1ed9t d\u1ef1 \u00e1n<\/h2><p>FeiChun (Anhui FeiChun Special Cable) c\u00f4ng b\u1ed1 c\u00e1c nh\u00f3m s\u1ea3n ph\u1ea9m c\u00e1p tang cu\u1ed1n, c\u00e1p x\u00edch d\u1eabn, c\u00e1p festoon, c\u00e1p c\u1ea9u STS, c\u00e1p m\u1ecf theo DIN VDE 0250 v\u00e0 c\u00e1p trung th\u1ebf XLPE. Trong m\u1ed9t d\u1ef1 \u00e1n c\u1ea3ng ho\u1eb7c m\u1ecf, tuy\u1ebfn 22 kV c\u1ed1 \u0111\u1ecbnh (b\u00e0i n\u00e0y) n\u1ed1i v\u1edbi \u0111o\u1ea1n di \u0111\u1ed9ng qua t\u1ee7, h\u1ed9p n\u1ed1i ho\u1eb7c \u0111\u1ea7u c\u00e1p; m\u1ed7i \u0111o\u1ea1n c\u1ea7n c\u00e1p thi\u1ebft k\u1ebf cho t\u1ea3i c\u01a1 h\u1ecdc ri\u00eang c\u1ee7a n\u00f3.<\/p><div class=\"scroll\"><table class=\"cmp\" style=\"min-width:950px\"><caption>B\u1ea3n \u0111\u1ed3 ch\u1ecdn c\u00e1p trong m\u1ed9t d\u1ef1 \u00e1n c\u1ea3ng ho\u1eb7c m\u1ecf<\/caption><thead><tr><th>\u0110o\u1ea1n tuy\u1ebfn<\/th><th>Lo\u1ea1i c\u00e1p<\/th><th>B\u00e0i k\u1ef9 thu\u1eadt li\u00ean quan<\/th><\/tr><\/thead><tbody><tr><td>Tuy\u1ebfn 22 kV ng\u1ea7m c\u1ed1 \u0111\u1ecbnh<\/td><td>Cu\/XLPE\/PVC\/DSTA\/PVC 12,7\/22(24) kV 3\u00d7240 (b\u00e0i n\u00e0y)<\/td><td>–<\/td><\/tr><tr><td>C\u00e1p trung th\u1ebf XLPE gi\u00e1p th\u00e9p ki\u1ec3u Anh<\/td><td>BS 6622 XLPE AWA\/SWA PVC<\/td><td><a href=\"https:\/\/feichuncables.com\/blog\/what-is-bs-6622-xlpe-awa-swa-pvc-cable\/\" target=\"_blank\" rel=\"noopener\">What is BS 6622 XLPE AWA\/SWA PVC Cable?<\/a><sup class=\"ref-n\">[18]<\/sup><\/td><\/tr><tr><td>C\u00e1p trung th\u1ebf XLPE ki\u1ec3u \u0110\u1ee9c<\/td><td>N2XS(FL)H<\/td><td><a href=\"https:\/\/feichuncables.com\/blog\/what-is-n2xsflh-medium-voltage-power-cable\/\" target=\"_blank\" rel=\"noopener\">What is N2XS(FL)H Medium Voltage Power Cable?<\/a><sup class=\"ref-n\">[19]<\/sup><\/td><\/tr><tr><td>\u0110o\u1ea1n tang cu\u1ed1n trung th\u1ebf cho c\u1ea9u, festoon<\/td><td>PROTOLON(SMK) (N)TSCGEW\u00d6U 6\/10 kV<\/td><td><a href=\"https:\/\/feichuncables.com\/blog\/protolonsmk-ntscgewou-6-10-kv-3x253x25-3-cap-tang-cuon-trung-the-cho-cau-container-festoon-va-thiet-bi-di-dong-lon\/\" target=\"_blank\" rel=\"noopener\">PROTOLON(SMK) (N)TSCGEW\u00d6U 6\/10 kV<\/a><sup class=\"ref-n\">[20]<\/sup><\/td><\/tr><tr><td>\u0110o\u1ea1n tang cu\u1ed1n trung th\u1ebf c\u00f3 s\u1ee3i quang<\/td><td>PROTOLON(FL)-LWL 3,6\/6 ho\u1eb7c 6\/10 kV<\/td><td><a href=\"https:\/\/feichuncables.com\/blog\/protolonfl-lwl-ntsflcgewou-36-6-hoac-6-10-kv-3x354x25-4efo-cap-tang-cuon-det-trung-the-tich-hop-soi-quang-cho-cau-cang-may-xuc-va-thiet-bi-mo\/\" target=\"_blank\" rel=\"noopener\">PROTOLON(FL)-LWL (N)TSFLCGEW\u00d6U<\/a><sup class=\"ref-n\">[21]<\/sup><\/td><\/tr><tr><td>\u0110o\u1ea1n k\u00e9o l\u00ea, thi\u1ebft b\u1ecb m\u1ecf h\u1ea1 \u00e1p<\/td><td>NSSH\u00d6U-J theo DIN VDE 0250-812<\/td><td><a href=\"https:\/\/feichuncables.com\/blog\/nsshou-j-3x2401x150-06-1-kv-cap-cao-su-hang-nang-theo-din-vde-0250-812-con-so-nao-quyet-dinh-khi-chon-cho-tang-cuon-keo-le-va-thiet-bi-cang\/\" target=\"_blank\" rel=\"noopener\">NSSH\u00d6U-J 3\u00d7240+1\u00d7150 0,6\/1 kV<\/a><sup class=\"ref-n\">[22]<\/sup><\/td><\/tr><\/tbody><\/table><\/div><div class=\"note\"><b>V\u1ec1 c\u00f4ng ngh\u1ec7 \u0111\u1ed9c quy\u1ec1n.<\/b> C\u1ea5u t\u1ea1o ri\u00eang c\u1ee7a t\u1eebng h\u1ecd c\u00e1p FeiChun (h\u1ee3p ch\u1ea5t, k\u1ebft c\u1ea5u ru\u1ed9t, l\u1edbp b\u1ec7n \u0111\u1ee1, m\u00e0n ch\u1eafn) l\u00e0 d\u1eef li\u1ec7u nh\u00e0 m\u00e1y v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c suy \u0111o\u00e1n trong b\u00e0i n\u00e0y. V\u1edbi c\u00e1p 22 kV 3\u00d7240, h\u00e3y y\u00eau c\u1ea7u b\u1ea3ng c\u1ea5u t\u1ea1o, bi\u00ean b\u1ea3n th\u1eed \u0111i\u1ec3n h\u00ecnh v\u00e0 ch\u1ee9ng nh\u1eadn \u0111\u00fang m\u00e3.<\/div><\/section><section id=\"s11\"><h2>11. D\u1eef li\u1ec7u c\u1ea7n y\u00eau c\u1ea7u khi \u0111\u1eb7t h\u00e0ng<\/h2><div class=\"scroll\"><table class=\"cmp\" style=\"min-width:800px\"><caption>Danh m\u1ee5c y\u00eau c\u1ea7u<\/caption><thead><tr><th>D\u1eef li\u1ec7u<\/th><th>V\u00ec sao c\u1ea7n<\/th><\/tr><\/thead><tbody><tr><td>C\u1ea5p \u0111i\u1ec7n \u00e1p v\u00e0 lo\u1ea1i h\u1ec7 th\u1ed1ng: 12,7\/22(24) kV hay 12\/20(24) kV; n\u1ed1i \u0111\u1ea5t trung t\u00ednh; th\u1eddi gian s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t<\/td><td>ch\u1ecdn U0 v\u00e0 chi\u1ec1u d\u00e0y c\u00e1ch \u0111i\u1ec7n<\/td><\/tr><tr><td>B\u1ea3ng k\u00edch th\u01b0\u1edbc, kh\u1ed1i l\u01b0\u1ee3ng, \u0111i\u1ec7n tr\u1edf, \u0111i\u1ec7n dung, \u0111i\u1ec7n c\u1ea3m, d\u00f2ng cho ph\u00e9p cho \u0111\u00fang m\u00e3 3\u00d7240<\/td><td>t\u00ednh d\u00f2ng, s\u1ee5t \u00e1p, d\u00f2ng n\u1ea1p, t\u1ea3i thang, \u1ed1ng<\/td><\/tr><tr><td>C\u1ea5u t\u1ea1o m\u00e0n ch\u1eafn: lo\u1ea1i, ti\u1ebft di\u1ec7n b\u0103ng ho\u1eb7c s\u1ee3i \u0111\u1ed3ng (mm\u00b2)<\/td><td>ki\u1ec3m tra d\u00f2ng ch\u1ea1m \u0111\u1ea5t (m\u1ee5c 6)<\/td><\/tr><tr><td>Bi\u00ean b\u1ea3n th\u1eed \u0111i\u1ec3n h\u00ecnh IEC 60502-2 c\u1ee7a lab \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn: PD, \u0111i\u1ec7n \u00e1p, xung, u\u1ed1n<\/td><td>x\u00e1c nh\u1eadn thi\u1ebft k\u1ebf<\/td><\/tr><tr><td>Bi\u00ean b\u1ea3n th\u1eed th\u01b0\u1eddng xuy\u00ean theo cu\u1ed9n: PD, \u0111i\u1ec7n \u00e1p, \u0111i\u1ec7n tr\u1edf ru\u1ed9t<\/td><td>nghi\u1ec7m thu t\u1eebng cu\u1ed9n<\/td><\/tr><tr><td>B\u1ea3n c\u00f3 hay kh\u00f4ng c\u00f3 ch\u1ed1ng th\u1ea5m (-W); c\u1ea5u t\u1ea1o l\u1edbp ch\u1ed1ng th\u1ea5m<\/td><td>tuy\u1ebfn ven bi\u1ec3n, n\u01b0\u1edbc ng\u1ea7m cao<\/td><\/tr><tr><td>Gi\u00e1p: DSTA hay SWA; chi\u1ec1u d\u00e0y b\u0103ng; l\u1ef1c k\u00e9o v\u00e0 b\u00e1n k\u00ednh u\u1ed1n cho ph\u00e9p<\/td><td>ph\u01b0\u01a1ng \u00e1n k\u00e9o c\u00e1p<\/td><\/tr><tr><td>V\u1eadt li\u1ec7u v\u1ecf: PVC hay PE; y\u00eau c\u1ea7u ch\u1ed1ng ch\u00e1y lan, kh\u00f3i, halogen n\u1ebfu c\u00f3<\/td><td>h\u1ed3 s\u01a1 ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y<\/td><\/tr><tr><td>Ph\u1ee5 ki\u1ec7n \u0111\u1ea7u c\u00e1p v\u00e0 h\u1ed9p n\u1ed1i \u0111\u00fang c\u1ea5p 24 kV<\/td><td>ch\u1ea5t l\u01b0\u1ee3ng l\u1eafp \u0111\u1eb7t<\/td><\/tr><tr><td>Ch\u1ee9ng nh\u1eadn theo m\u00e3 c\u00e1p, ph\u1ea1m vi v\u00e0 th\u1eddi h\u1ea1n hi\u1ec7u l\u1ef1c<\/td><td>h\u1ed3 s\u01a1 d\u1ef1 \u00e1n<\/td><\/tr><\/tbody><\/table><\/div><\/section><section id=\"s12\"><h2>12. Ch\u1ee9ng nh\u1eadn c\u1ee7a FeiChun<\/h2><div class=\"certbanner\"><h3>FeiChun Cable: b\u1ed9 ch\u1ee9ng nh\u1eadn \u0111\u1ea7y \u0111\u1ee7<\/h3><p>Theo th\u00f4ng tin c\u1ee7a FeiChun, h\u1ec7 th\u1ed1ng c\u00e1p c\u1ee7a c\u00f4ng ty \u0111\u00e1p \u1ee9ng <strong>CE, UKCA, VDE, EAC, ATEX, IECEx<\/strong> v\u00e0 c\u00f3 <strong>ch\u1ee9ng nh\u1eadn an to\u00e0n ch\u00e1y c\u1ee7a Nga<\/strong>. B\u1ed9 h\u1ed3 s\u01a1 n\u00e0y gi\u00fap r\u00fat ng\u1eafn nghi\u1ec7m thu cho d\u1ef1 \u00e1n c\u1ea3ng, m\u1ecf v\u00e0 c\u00f4ng nghi\u1ec7p, \u0111\u1eb7c bi\u1ec7t khi c\u00f9ng m\u1ed9t ch\u1ee7 \u0111\u1ea7u t\u01b0 mua c\u1ea3 c\u00e1p c\u1ed1 \u0111\u1ecbnh v\u00e0 c\u00e1p di \u0111\u1ed9ng.<sup class=\"ref-n\">[23]<\/sup><\/p><\/div><div class=\"certgrid\"><div class=\"certchip\">CE – Li\u00ean minh ch\u00e2u \u00c2u<\/div><div class=\"certchip\">UKCA – Anh<\/div><div class=\"certchip\">VDE – ti\u00eau chu\u1ea9n \u0110\u1ee9c<\/div><div class=\"certchip\">EAC – Nga v\u00e0 EAEU<\/div><div class=\"certchip\">ATEX – v\u00f9ng n\u1ed5<\/div><div class=\"certchip\">IECEx – s\u01a1 \u0111\u1ed3 qu\u1ed1c t\u1ebf<\/div><div class=\"certchip\">Ch\u1ee9ng nh\u1eadn an to\u00e0n ch\u00e1y Nga<\/div><\/div><div class=\"warn\"><b>C\u00e1ch d\u00f9ng ch\u1ee9ng nh\u1eadn \u0111\u00fang.<\/b> H\u00e3y xin b\u1ea3n sao v\u00e0 \u0111\u1ed1i chi\u1ebfu m\u00e3 c\u00e1p, d\u1ea3i \u0111i\u1ec7n \u00e1p, ti\u1ebft di\u1ec7n, ph\u1ea1m vi v\u00e0 th\u1eddi h\u1ea1n hi\u1ec7u l\u1ef1c; ch\u1ee9ng nh\u1eadn c\u1ee7a m\u1ed9t h\u1ecd c\u00e1p, \u0111\u1eb7c bi\u1ec7t c\u00e1p h\u1ea1 \u00e1p, kh\u00f4ng t\u1ef1 \u0111\u1ed9ng \u00e1p d\u1ee5ng cho c\u00e1p trung th\u1ebf 22 kV. V\u1edbi c\u00e1p trung th\u1ebf ng\u1ea7m, h\u1ed3 s\u01a1 quy\u1ebft \u0111\u1ecbnh l\u00e0 bi\u00ean b\u1ea3n th\u1eed \u0111i\u1ec3n h\u00ecnh IEC 60502-2 (m\u1ee5c 5) cho \u0111\u00fang m\u00e3 3\u00d7240 12,7\/22(24) kV. ATEX v\u00e0 IECEx ch\u1ec9 li\u00ean quan khi tuy\u1ebfn \u0111i v\u00e0o khu v\u1ef1c c\u00f3 kh\u00ed n\u1ed5, v\u00e0 c\u1ea7n l\u00e0m r\u00f5 \u00e1p d\u1ee5ng cho c\u00e1p, h\u1ec7 th\u1ed1ng c\u00e1p hay \u0111\u1ea7u v\u00e0o c\u00e1p.<\/div><div class=\"contact\"><div><strong>FeiChun Cable \/ \u98de\u7eaf\u7535\u7f06<\/strong><br>Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 d\u1ef1 \u00e1n: <a href=\"mailto:Tech@feichuncables.com\">Tech@feichuncables.com<\/a><\/div><div><strong>\u0110i\u1ec7n tho\u1ea1i<\/strong><br><a href=\"tel:+8613855123218\">+86 13855123218<\/a><\/div><\/div><\/section><section id=\"faq\"><h2>H\u1ecfi \u0111\u00e1p<\/h2><h3>Cu\/XLPE\/PVC\/DSTA\/PVC 22 kV 3\u00d7240 l\u00e0 lo\u1ea1i c\u00e1p g\u00ec?<\/h3><p>C\u00e1p ng\u1ea7m trung th\u1ebf ba l\u00f5i, ru\u1ed9t \u0111\u1ed3ng c\u1ea5p 2 \u00e9p ch\u1eb7t 240 mm\u00b2, c\u00e1ch \u0111i\u1ec7n XLPE d\u00e0y danh \u0111\u1ecbnh 5,5 mm, c\u00f3 m\u00e0n ch\u1eafn b\u00e1n d\u1eabn v\u00e0 m\u00e0n ch\u1eafn kim lo\u1ea1i (b\u0103ng \u0111\u1ed3ng) cho t\u1eebng l\u00f5i, l\u1edbp b\u1ecdc ph\u00e2n c\u00e1ch, gi\u00e1p hai l\u1edbp b\u0103ng th\u00e9p m\u1ea1 k\u1ebdm (DSTA) v\u00e0 v\u1ecf ngo\u00e0i PVC, theo TCVN 5935-2 \/ IEC 60502-2. \u0110\u00e2y l\u00e0 c\u00e1p l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh.<\/p><h3>V\u00ec sao ghi 12,7\/22(24) kV m\u00e0 IEC n\u00eau 12\/20(24) kV?<\/h3><p>U0 = 22\/\u221a3 \u2248 12,7 kV l\u00e0 \u0111i\u1ec7n \u00e1p pha-\u0111\u1ea5t c\u1ee7a l\u01b0\u1edbi 22 kV, c\u00f2n IEC 60502-2 li\u1ec7t k\u00ea c\u1ea5p 12\/20(24) kV. C\u1ea3 hai c\u00f9ng Um = 24 kV; catalog Vi\u1ec7t Nam th\u01b0\u1eddng ghi 12,7\/22(24) kV cho l\u01b0\u1edbi 22 kV, v\u1edbi chi\u1ec1u d\u00e0y c\u00e1ch \u0111i\u1ec7n danh \u0111\u1ecbnh 5,5 mm. C\u1ea7n x\u00e1c nh\u1eadn c\u1ea5p U0 theo ch\u1ebf \u0111\u1ed9 n\u1ed1i \u0111\u1ea5t trung t\u00ednh v\u00e0 th\u1eddi gian t\u1ed3n t\u1ea1i s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t c\u1ee7a l\u01b0\u1edbi.<\/p><h3>DSTA kh\u00e1c SWA th\u1ebf n\u00e0o, khi n\u00e0o ch\u1ecdn lo\u1ea1i n\u00e0o?<\/h3><p>DSTA d\u00f9ng hai l\u1edbp b\u0103ng th\u00e9p qu\u1ea5n ng\u01b0\u1ee3c chi\u1ec1u, ch\u1ecbu n\u00e9n h\u01b0\u1edbng k\u00ednh v\u00e0 va \u0111\u1eadp ph\u00e2n b\u1ed1 t\u1ed1t, nh\u1eb9 v\u00e0 r\u1ebb h\u01a1n nh\u01b0ng \u00edt ch\u1ecbu k\u00e9o v\u00e0 k\u00e9m m\u1ec1m. SWA d\u00f9ng s\u1ee3i th\u00e9p, ch\u1ecbu k\u00e9o t\u1ed1t h\u01a1n n\u00ean h\u1ee3p v\u1edbi tuy\u1ebfn k\u00e9o d\u00e0i, \u0111o\u1ea1n th\u1eb3ng \u0111\u1ee9ng v\u00e0 n\u1ec1n c\u00f3 nguy c\u01a1 l\u00fan. DSTA h\u1ee3p v\u1edbi tuy\u1ebfn ch\u00f4n ho\u1eb7c h\u00e0o c\u00e1p kh\u00f4ng ch\u1ecbu l\u1ef1c k\u00e9o d\u1ecdc l\u1edbn.<\/p><h3>H\u1eadu t\u1ed1 -W c\u00f3 \u00fd ngh\u0129a g\u00ec v\u00e0 c\u00f3 c\u1ea7n cho c\u1ea3ng?<\/h3><p>-W ch\u1ec9 b\u1ea3n ch\u1ed1ng th\u1ea5m: ru\u1ed9t c\u00f3 v\u1eadt li\u1ec7u ch\u1ed1ng th\u1ea5m v\u00e0 l\u1edbp ch\u1ed1ng th\u1ea5m d\u1ecdc c\u00e1p. \u1ede n\u01a1i m\u1ef1c n\u01b0\u1edbc ng\u1ea7m cao ho\u1eb7c ch\u1ecbu th\u1ee7y tri\u1ec1u, n\u01b0\u1edbc x\u00e2m nh\u1eadp qua v\u1ecf h\u1ecfng c\u00f3 th\u1ec3 lan d\u1ecdc c\u00e1p; b\u1ea3n -W h\u1ea1n ch\u1ebf \u0111o\u1ea1n c\u00e1p b\u1ecb \u1ea9m. \u0110\u00e2y l\u00e0 khuy\u1ebfn ngh\u1ecb thi\u1ebft k\u1ebf c\u1ee7a t\u00e1c gi\u1ea3, c\u1ea7n \u0111\u1ed1i chi\u1ebfu v\u1edbi h\u1ed3 s\u01a1 d\u1ef1 \u00e1n.<\/p><h3>D\u00f2ng cho ph\u00e9p c\u1ee7a 3\u00d7240 \u0111\u1ed3ng \u1edf 22 kV l\u00e0 bao nhi\u00eau?<\/h3><p>Kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb chung: ph\u1ee5 thu\u1ed9c c\u00e1ch \u0111\u1eb7t, nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111i\u1ec7n tr\u1edf nhi\u1ec7t c\u1ee7a \u0111\u1ea5t, \u0111\u1ed9 s\u00e2u v\u00e0 s\u1ed1 m\u1ea1ch chung tuy\u1ebfn, v\u00e0 ph\u1ea3i t\u00ednh theo IEC 60287. M\u1ed9t b\u1ea3ng thi\u1ebft k\u1ebf tham chi\u1ebfu cho c\u00e1p 6,35\/11 kV ch\u00f4n 0,8 m ghi kho\u1ea3ng 500 A \u1edf 20 \u00b0C v\u00e0 1,0 K\u00b7m\/W; c\u00e1p 22 kV c\u00f3 c\u00e1ch \u0111i\u1ec7n d\u00e0y h\u01a1n n\u00ean \u0111\u00e2y ch\u1ec9 l\u00e0 m\u1ed1c so s\u00e1nh, kh\u00f4ng d\u00f9ng thay b\u1ea3ng c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p><h3>Ng\u1eafn m\u1ea1ch: ru\u1ed9t ch\u1ecbu bao nhi\u00eau v\u00e0 m\u00e0n ch\u1eafn c\u1ea7n bao nhi\u00eau?<\/h3><p>M\u1ed7i ru\u1ed9t 240 mm\u00b2 ch\u1ecbu kho\u1ea3ng 34,3 kA trong 1 s theo k\u00b7S\/\u221at v\u1edbi k = 143. M\u00e0n ch\u1eafn b\u0103ng \u0111\u1ed3ng ph\u1ea3i ch\u1ecbu d\u00f2ng s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t c\u1ee7a l\u01b0\u1edbi c\u1ee5 th\u1ec3; ti\u1ebft di\u1ec7n m\u00e0n ch\u1eafn kh\u00e1c nhau gi\u1eefa c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t n\u00ean ph\u1ea3i y\u00eau c\u1ea7u s\u1ed1 li\u1ec7u theo mm\u00b2 v\u00e0 th\u1eddi gian c\u1eaft.<\/p><h3>C\u00f3 d\u00f9ng Cu\/XLPE\/PVC\/DSTA\/PVC cho c\u1ea9u, tang cu\u1ed1n ho\u1eb7c x\u00edch d\u1eabn c\u00e1p kh\u00f4ng?<\/h3><p>Kh\u00f4ng. C\u00e1p gi\u00e1p b\u0103ng th\u00e9p l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh, n\u1eb7ng kho\u1ea3ng 12,6 kg\/m v\u00e0 c\u1ea7n b\u00e1n k\u00ednh u\u1ed1n kho\u1ea3ng 1 m. Thi\u1ebft b\u1ecb di \u0111\u1ed9ng c\u1ea7n c\u00e1p tang cu\u1ed1n trung th\u1ebf c\u00f3 c\u1ea5p \u0111i\u1ec7n \u00e1p v\u00e0 c\u1ea5u t\u1ea1o ph\u00f9 h\u1ee3p; FeiChun c\u00f3 c\u00e1c b\u00e0i v\u1ec1 h\u1ecd c\u00e1p n\u00e0y.<\/p><h3>Ch\u1ee9ng nh\u1eadn c\u1ee7a FeiChun g\u1ed3m nh\u1eefng g\u00ec?<\/h3><p>Theo th\u00f4ng tin c\u1ee7a FeiChun: CE, UKCA, VDE, EAC, ATEX, IECEx v\u00e0 ch\u1ee9ng nh\u1eadn an to\u00e0n ch\u00e1y c\u1ee7a Nga. V\u1edbi c\u00e1p trung th\u1ebf c\u1ea7n y\u00eau c\u1ea7u th\u00eam bi\u00ean b\u1ea3n th\u1eed \u0111i\u1ec3n h\u00ecnh IEC 60502-2 c\u1ee7a \u0111\u00fang m\u00e3, c\u1ea5p \u0111i\u1ec7n \u00e1p v\u00e0 ti\u1ebft di\u1ec7n.<\/p><\/section><section id=\"src\"><h2>Ngu\u1ed3n<\/h2><ol class=\"refs\"><li>LS VINA (\u0111\u1ea1i l\u00fd), Cu\/XLPE\/PVC\/DSTA\/PVC-W 22 kV 3\u00d7240 (IEC 60502-2:2014, TCVN 5935-2:2013; \u00d8 ru\u1ed9t 18,1 mm, XLPE 5,5 mm, l\u1edbp b\u1ecdc ph\u00e2n c\u00e1ch 2,0 mm, gi\u00e1p b\u0103ng th\u00e9p 0,8 mm, v\u1ecf 3,7 mm, \u00d8 c\u00e1p \u2248 80 mm, \u2248 12 590 kg\/km) – th\u00f4ng s\u1ed1 tham kh\u1ea3o c\u1ee7a b\u1ea3n ch\u1ed1ng th\u1ea5m -W <a href=\"https:\/\/capls.vn\/san-pham\/cap-ngam-trung-the-22kv-cu-xlpe-pvc-dsta-pvc-w-3x240mm2-ls-vina\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>CADIVI \/ LS VINA, Cu\/XLPE\/PVC\/DSTA\/PVC 12,7\/22(24) kV (c\u1ea5u tr\u00fac: ru\u1ed9t, m\u00e0n ch\u1eafn ru\u1ed9t, m\u00e0n ch\u1eafn kim lo\u1ea1i, b\u0103ng gi\u00e1p th\u00e9p; IEC 60502-2:2014, TCVN 5935-2:2013) <a href=\"https:\/\/cadivi-vn.vn\/san-pham\/cap-ngam-trung-the-cu-xlpe-pvc-dsta-pvc-ls-vina\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>Ho\u00e0ng Nh\u1eadt, Cu(Al)\/XLPE\/CTS\/PVC\/DSTA\/PVC-W 12,7\/22(24) kV (m\u00e0n ch\u1eafn b\u0103ng \u0111\u1ed3ng; TCVN 5935-2 \/ IEC 60502-2 v\u00e0 TCCS 17:2021\/EVN; ru\u1ed9t c\u1ea5p 2 n\u00e9n ch\u1eb7t; 90 \u00b0C) <a href=\"https:\/\/thietbidienhoangnhat.vn\/cap-ngam-trung-the-3-loi-cu-al-xlpe-cts-pvc-dsta-pvc-w-3x120-12-7-22-24-kv-loai-man-chan-bang-dong-giap-bang-thep\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>\u0110\u1ea1i Long, Cu\/XLPE\/Sehh\/PVC\/DSTA\/PVC-W 12,7\/22(24) kV (m\u00e0n ch\u1eafn kim lo\u1ea1i g\u1ed3m s\u1ee3i v\u00e0 b\u0103ng \u0111\u1ed3ng; ru\u1ed9t c\u00f3 v\u1eadt li\u1ec7u ch\u1ed1ng th\u1ea5m; IEC 60502-2, IEC 60228) <a href=\"https:\/\/dailongcable.com\/vn\/cu\/xlpe\/sehh\/pvc\/dsta\/pvc-w-12-7\/22-24-kv.html\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>Tratos, IEC 60502 (c\u00e1c c\u1ea5p \u0111i\u1ec7n \u00e1p 12\/20(24) kV; l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh; IEC 60502-4 cho ph\u1ee5 ki\u1ec7n) <a href=\"https:\/\/tratosgroup.com\/products\/standards\/international\/iec-60502\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>Cable Services, IEC 60502 (k\u00fd hi\u1ec7u U0\/U(Um); h\u1ec7 th\u1ed1ng lo\u1ea1i B; th\u1eed ph\u00f3ng \u0111i\u1ec7n c\u1ee5c b\u1ed9 \u1edf 1,73 U0) <a href=\"https:\/\/www.cableservices.co.uk\/iec-60502\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>BASEC, Partial discharge test trong th\u1eed \u0111i\u1ec3n h\u00ecnh c\u00e1p trung th\u1ebf (2 U0 trong 10 s r\u1ed3i 1,73 U0; \u0111\u1ed9 nh\u1ea1y 10 pC th\u01b0\u1eddng xuy\u00ean, 5 pC \u0111i\u1ec3n h\u00ecnh) <a href=\"https:\/\/www.basec.org.uk\/news\/2025\/9\/2\/medium-voltage-type-test-technical-insights-partial-discharge\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>IEC 60502-2 ed 2.0 (thay \u0111\u1ed5i li\u00ean quan x\u00e2m nh\u1eadp n\u01b0\u1edbc, ru\u1ed9t l\u1edbn, y\u00eau c\u1ea7u ph\u00f3ng \u0111i\u1ec7n c\u1ee5c b\u1ed9, chi\u1ec1u d\u00e0y c\u00e1ch \u0111i\u1ec7n v\u00e0 v\u1ecf) <a href=\"http:\/\/www.normservis.cz\/download\/view\/iec\/info_iec60502-2%7Bed2.0%7Den_d.pdf\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>China Cable Factory (Henan Huanghe Cable), 11 kV cable guide (\u00e9p \u0111\u1ed3ng th\u1eddi ba l\u1edbp, ph\u00f2ng s\u1ea1ch; m\u00e0n ch\u1eafn \u0111\u1ed3ng \u2248 16 mm\u00b2; th\u1eed \u0111i\u1ec3n h\u00ecnh; b\u1ea3ng tham chi\u1ebfu 3\u00d7240: 500 A trong \u0111\u1ea5t, \u00d8 85 mm, 13 200 kg\/km) – gi\u00e1 tr\u1ecb thi\u1ebft k\u1ebf tham chi\u1ebfu cho 6,35\/11 kV <a href=\"https:\/\/chinacablefactory.com\/blog\/11kv-cable-manufacturers-china-specifications-buyers-guide\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>B\u1ea3ng th\u00f4ng s\u1ed1 3\u00d7240 mm\u00b2 Cu\/XLPE\/CTS\/SWA\/PVC 11 kV (ru\u1ed9t 61 s\u1ee3i \u00d8 18,4 mm; \u0111i\u1ec7n tr\u1edf 0,0754 \u03a9\/km; \u0111i\u1ec7n c\u1ea3m 0,275 mH\/km; ng\u1eafn m\u1ea1ch ru\u1ed9t 34,34 kA\/1 s) <a href=\"https:\/\/www.scribd.com\/document\/552856502\/3x240-mm-CU-XLPE-CUT-SWA-PVC-11-kV-TD-2\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>NPC, Steel wire armoured cable (SWA ch\u1ecbu k\u00e9o t\u1ed1t; STA ch\u1ecbu n\u00e9n h\u01b0\u1edbng k\u00ednh, \u00edt ch\u1ecbu k\u00e9o, k\u00e9m m\u1ec1m) <a href=\"https:\/\/www.npcelectric.com\/news\/steel-wire-armoured-cable-swa-types-applications-installation-and-standards-explained.html\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>RichingPower, Armored vs unarmored cable (DSTA hai l\u1edbp b\u0103ng th\u00e9p qu\u1ea5n ng\u01b0\u1ee3c chi\u1ec1u, ch\u1ecbu n\u00e9n t\u1ed1t h\u01a1n STA; SWA ch\u1ecbu k\u00e9o cho riser) <a href=\"https:\/\/richingpower.com\/armored-vs-unarmored-cable-swa\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>Central Wires, Armoured cable (STA che ph\u1ee7 100 % ch\u1ed1ng lo\u00e0i g\u1eb7m nh\u1ea5m; kh\u00f4ng d\u00f9ng gi\u00e1p th\u00e9p cho c\u00e1p m\u1ed9t l\u00f5i AC; SWA l\u00e0m c\u1ea5u ki\u1ec7n ch\u1ecbu k\u00e9o) <a href=\"https:\/\/www.centralwires.com\/electrical-cable\/armoured-cable\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>Shanpower, 3\u00d7240+1\u00d7120 steel tape armoured XLPE (90 \u00b0C, kh\u1ea9n c\u1ea5p 130 \u00b0C, ng\u1eafn m\u1ea1ch 250 \u00b0C\/5 s; b\u00e1n k\u00ednh u\u1ed1n 12\u00d7D) <a href=\"https:\/\/www.shanpowercable.com\/quality-8107233-3x240-1x120mm2-steel-tape-armoured-electrical-cable-copper-core-xlpe-pvc-insulated-underground-cable\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>Demiks, Cable withstand voltage test (th\u1eed \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u 5 ph\u00fat kho\u1ea3ng 2,5 \u2013 3,5 l\u1ea7n U0 theo IEC 60502-2) <a href=\"https:\/\/demikspower.com\/cable-withstand-voltage-test-system\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>Sorivo Cable, Cable current carrying capacity & sizing guide (v\u00ed d\u1ee5 h\u1ec7 s\u1ed1 hi\u1ec7u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea5t, \u0111i\u1ec7n tr\u1edf nhi\u1ec7t \u0111\u1ea5t, s\u1ed1 m\u1ea1ch ch\u00f4n chung; c\u00e1p h\u1ea1 \u00e1p) <a href=\"https:\/\/sorivocable.com\/cable-current-carrying-capacity-sizing-guide\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>FeiChun, C\u00e1p 0,6\/1 kV Cu\/XLPE\/PVC v\u00e0 Al\/XLPE\/PVC 4\u00d7150, 4\u00d7240 (k = 143 cho \u0111\u1ed3ng-XLPE; l\u1ef1c k\u00e9o kho\u1ea3ng 50 N\/mm\u00b2 khi k\u00e9o b\u1eb1ng \u0111\u1ea7u k\u00e9o g\u1eafn l\u00ean ru\u1ed9t \u0111\u1ed3ng) <a href=\"https:\/\/feichuncables.com\/blog\/cap-06-1-kv-cu-xlpe-pvc-va-al-xlpe-pvc-4x150-4x240-mm%c2%b2-chon-dong-hay-nhom-cho-tuyen-cap-dien-tai-cang\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>FeiChun, What is BS 6622 XLPE AWA\/SWA PVC Cable? <a href=\"https:\/\/feichuncables.com\/blog\/what-is-bs-6622-xlpe-awa-swa-pvc-cable\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>FeiChun, What is N2XS(FL)H Medium Voltage Power Cable? <a href=\"https:\/\/feichuncables.com\/blog\/what-is-n2xsflh-medium-voltage-power-cable\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>FeiChun, PROTOLON(SMK) (N)TSCGEW\u00d6U 6\/10 kV 3\u00d725+3\u00d725\/3: c\u00e1p tang cu\u1ed1n trung th\u1ebf cho c\u1ea9u container, festoon v\u00e0 thi\u1ebft b\u1ecb di \u0111\u1ed9ng l\u1edbn <a href=\"https:\/\/feichuncables.com\/blog\/protolonsmk-ntscgewou-6-10-kv-3x253x25-3-cap-tang-cuon-trung-the-cho-cau-container-festoon-va-thiet-bi-di-dong-lon\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>FeiChun, PROTOLON(FL)-LWL (N)TSFLCGEW\u00d6U 3,6\/6 ho\u1eb7c 6\/10 kV: c\u00e1p tang cu\u1ed1n d\u1eb9t trung th\u1ebf t\u00edch h\u1ee3p s\u1ee3i quang <a href=\"https:\/\/feichuncables.com\/blog\/protolonfl-lwl-ntsflcgewou-36-6-hoac-6-10-kv-3x354x25-4efo-cap-tang-cuon-det-trung-the-tich-hop-soi-quang-cho-cau-cang-may-xuc-va-thiet-bi-mo\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>FeiChun, NSSH\u00d6U-J 3\u00d7240+1\u00d7150 0,6\/1 kV: c\u00e1p cao su h\u1ea1ng n\u1eb7ng theo DIN VDE 0250-812 <a href=\"https:\/\/feichuncables.com\/blog\/nsshou-j-3x2401x150-06-1-kv-cap-cao-su-hang-nang-theo-din-vde-0250-812-con-so-nao-quyet-dinh-khi-chon-cho-tang-cuon-keo-le-va-thiet-bi-cang\/\" target=\"_blank\" rel=\"noopener nofollow\">[li\u00ean k\u1ebft]<\/a><\/li><li>FeiChun Cable: th\u00f4ng tin v\u1ec1 ch\u1ee9ng nh\u1eadn c\u1ee7a c\u00f4ng ty.<\/li><\/ol><p class=\"small\">T\u00ean ti\u00eau chu\u1ea9n v\u00e0 th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a b\u00ean th\u1ee9 ba ch\u1ec9 d\u00f9ng \u0111\u1ec3 nh\u1eadn di\u1ec7n k\u1ef9 thu\u1eadt, kh\u00f4ng h\u00e0m \u00fd li\u00ean k\u1ebft. S\u1ed1 li\u1ec7u c\u00e1c ngu\u1ed3n c\u00f3 th\u1ec3 kh\u00e1c nhau; h\u00e3y \u0111\u1ed1i chi\u1ebfu v\u1edbi phi\u00ean b\u1ea3n ti\u00eau chu\u1ea9n hi\u1ec7n h\u00e0nh v\u00e0 b\u1ea3ng d\u1eef li\u1ec7u c\u1ee7a FeiChun.<\/p><\/section><\/main><footer><div class=\"wrap\"><div class=\"tag\">FEICHUN CABLE<\/div><p><strong>Tech@feichuncables.com<\/strong><br><strong>+86 13855123218<\/strong><\/p><p class=\"small\">Cu\/XLPE\/PVC\/DSTA\/PVC 12,7\/22(24) kV 3\u00d7240 mm\u00b2 – b\u00e0i k\u1ef9 thu\u1eadt, c\u1eadp nh\u1eadt 30\/9\/2026.<\/p><\/div><\/footer><\/body><\/html>\n","protected":false},"excerpt":{"rendered":"B\u00e0i vi\u1ebft ph\u00e2n t\u00edch c\u1ea5u t\u1ea1o c\u00e1p ba l\u00f5i 12,7\/22(24) kV theo TCVN 5935-2 \/ IEC 60502-2, \u0111i\u1ec7n tr\u01b0\u1eddng trong l\u1edbp c\u00e1ch \u0111i\u1ec7n XLPE, vai tr\u00f2 m\u00e0n ch\u1eafn v\u00e0 gi\u00e1p b\u0103ng th\u00e9p k\u00e9p, ki\u1ec3m tra b\u1eb1ng t\u00ednh to\u00e1n c\u1ee1 3\u00d7240 mm\u00b2 (\u0111i\u1ec7n tr\u1edf, s\u1ee5t \u00e1p, c\u00f4ng su\u1ea5t, ng\u1eafn m\u1ea1ch, d\u00f2ng n\u1ea1p, kh\u1ed1i l\u01b0\u1ee3ng, b\u00e1n k\u00ednh u\u1ed1n, l\u1ef1c k\u00e9o), so s\u00e1nh DSTA v\u1edbi SWA, ph\u00e2n \u0111\u1ecbnh ranh gi\u1edbi v\u1edbi c\u00e1p tang cu\u1ed1n cho thi\u1ebft b\u1ecb di \u0111\u1ed9ng v\u00e0 n\u00eau danh m\u1ee5c h\u1ed3 s\u01a1 c\u1ea7n y\u00eau c\u1ea7u, g\u1ed3m b\u1ed9 ch\u1ee9ng nh\u1eadn c\u1ee7a FeiChun.","protected":false},"author":1,"featured_media":77975,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"left","csco_page_header_type":"title","csco_page_load_nextpost":"","footnotes":""},"categories":[67084],"tags":[],"class_list":["post-77974","post","type-post","status-publish","format-standard","has-post-thumbnail","category-cap-cuon","cs-entry"],"_links":{"self":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/77974","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/comments?post=77974"}],"version-history":[{"count":2,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/77974\/revisions"}],"predecessor-version":[{"id":77978,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/posts\/77974\/revisions\/77978"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media\/77975"}],"wp:attachment":[{"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/media?parent=77974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/categories?post=77974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feichuncables.com\/blog\/wp-json\/wp\/v2\/tags?post=77974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":77974,"date":"2026-09-30T10:55:35","date_gmt":"2026-09-30T02:55:35","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=77974"},"modified":"2026-09-30T10:55:40","modified_gmt":"2026-09-30T02:55:40","slug":"cu-xlpe-pvc-dsta-pvc-22-kv-3x240-mm%c2%b2-cap-ngam-trung-the-giap-bang-thep-kep-con-so-nao-quyet-dinh-khi-chon-cho-luoi-22-kv-tai-cang-va-khu-cong-nghiep","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/cu-xlpe-pvc-dsta-pvc-22-kv-3x240-mm%c2%b2-cap-ngam-trung-the-giap-bang-thep-kep-con-so-nao-quyet-dinh-khi-chon-cho-luoi-22-kv-tai-cang-va-khu-cong-nghiep\/","title":{"rendered":"Cu\/XLPE\/PVC\/DSTA\/PVC 22 kV 3\u00d7240 mm\u00b2: c\u00e1p ng\u1ea7m trung th\u1ebf gi\u00e1p b\u0103ng th\u00e9p k\u00e9p – con s\u1ed1 n\u00e0o quy\u1ebft \u0111\u1ecbnh khi ch\u1ecdn cho l\u01b0\u1edbi 22 kV t\u1ea1i c\u1ea3ng v\u00e0 khu c\u00f4ng nghi\u1ec7p"},"content":{"rendered":"\n