What is UNE 21123 Cable?

Spanish Standard Power Distribution Cables | Cables de Distribución Estándar Español | 西班牙標準配電電纜

 UNE 21123 standard refers to the design and cross-sectional area specifications for cables used by utilities on power distribution circuits with voltage ratings up to and including 600/1000V (0.6/1kV). UNE standards are released by AENOR (Asociación Española de Normalización y Certificación), the Spanish Association for Standardisation and Certification. As AENOR is a member of ISO, IEC, and CENELEC, many of its standards are harmonized with European and international conventions.
UNE 21123 standard refers to the design and cross-sectional area specifications for cables used by utilities on power distribution circuits with voltage ratings up to and including 600/1000V (0.6/1kV). UNE standards are released by AENOR (Asociación Española de Normalización y Certificación), the Spanish Association for Standardisation and Certification. As AENOR is a member of ISO, IEC, and CENELEC, many of its standards are harmonized with European and international conventions.
UNE 21123 Cable – Spanish Standard Power Cables | Anhui Feichun Special Cable

What is UNE 21123 Cable?

¿Qué es el Cable UNE 21123?
何謂 UNE 21123 電纜?

Spanish Standard Power Distribution Cables | Cables de Distribución Estándar Español | 西班牙標準配電電纜

UNE 21123 AENOR 0.6/1kV XLPE Insulation LSZH Sheath -40°C to +90°C
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UNE 21123 Overview & Purpose | Descripción General | 概述與用途

The UNE 21123 standard refers to the design and cross-sectional area specifications for cables used by utilities on power distribution circuits with voltage ratings up to and including 600/1000V (0.6/1kV). UNE standards are released by AENOR (Asociación Española de Normalización y Certificación), the Spanish Association for Standardisation and Certification. As AENOR is a member of ISO, IEC, and CENELEC, many of its standards are harmonized with European and international conventions.

ESLa norma UNE 21123 se refiere al diseño y especificaciones de sección transversal de cables utilizados por empresas de servicios públicos en circuitos de distribución de energía con clasificaciones de voltaje hasta 600/1000V (0.6/1kV). Las normas UNE son publicadas por AENOR, la Asociación Española de Normalización y Certificación.

繁中UNE 21123 標準規定了公用事業在電壓等級不超過 600/1000V(0.6/1kV)的配電線路上使用的電纜設計和截面積規格。UNE 標準由 AENOR(西班牙標準化和認證協會)發布。由於 AENOR 是 ISO、IEC 和 CENELEC 的成員,其許多標準與歐洲和國際慣例協調一致。【說明:UNE 是 “Una Norma Española”(西班牙國家標準)的縮寫,是西班牙最重要的電纜標準體系之一】

UNE 21123 cables are designed for transmission, distribution, and power networks. The standard is divided into multiple sub-sections covering different insulation and sheathing material combinations, providing solutions for both external installations (PVC sheathed) and internal applications requiring fire safety (LSZH Polyolefin sheathed). These cables are increasingly specified across Europe and Latin America.

ESLos cables UNE 21123 están diseñados para redes de transmisión, distribución y energía. El estándar está dividido en múltiples subsecciones que cubren diferentes combinaciones de materiales de aislamiento y cubierta.

繁中UNE 21123 電纜專為輸電、配電和電力網路設計。該標準分為多個子部分,涵蓋不同的絕緣和護套材料組合,為外部安裝(PVC護套)和需要防火安全的內部應用(LSZH聚烯烴護套)提供解決方案。這些電纜在歐洲和拉丁美洲的規範中越來越普遍。

Voltage Rating | 電壓等級
0.6/1kV
600/1000V AC
Temperature Range | 溫度範圍
-40 ~ +90°C
XLPE insulation
Conductor Size | 導體截面
1.5 – 240mm²
Class 5 flexible copper
Core Count | 芯數
1 – 5cores
Including earth options
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UNE 21123 Standard Parts | Partes del Estándar | 標準分部

UNE 21123 is divided into five sub-sections covering different insulation and sheathing material combinations. Each part addresses specific application requirements, from general PVC cables to specialized LSZH (Low Smoke Zero Halogen) cables for environments where fire safety is critical.

ESUNE 21123 se divide en cinco subsecciones que cubren diferentes combinaciones de materiales de aislamiento y cubierta. Cada parte aborda requisitos de aplicación específicos.

繁中UNE 21123 分為五個子部分,涵蓋不同的絕緣和護套材料組合。每個部分針對特定的應用需求,從通用 PVC 電纜到適用於防火安全至關重要環境的專用 LSZH(低煙無鹵)電纜。【說明:選擇適當的子標準需要考慮安裝環境、防火要求和耐化學性需求】

UNE 21123-1
PVC Insulated & PVC Sheathed
PVC絕緣和PVC護套
General purpose, external installations | 通用,外部安裝
UNE 21123-2
XLPE Insulated & PVC Sheathed
XLPE絕緣和PVC護套
Higher temperature rating | 更高溫度等級
UNE 21123-3
EPR Insulated & PVC Sheathed
EPR絕緣和PVC護套
Flexible, high temperature | 柔韌,高溫
UNE 21123-4
XLPE Insulated & Polyolefin (LSZH) Sheathed
XLPE絕緣和聚烯烴(LSZH)護套
Fire safety, low smoke | 防火安全,低煙
UNE 21123-5
EPR Insulated & Polyolefin (LSZH) Sheathed
EPR絕緣和聚烯烴(LSZH)護套
Oil & Gas industry | 石油與天然氣行業
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Featured Product: RZ1MZ1-K Cable | Producto Destacado | 主打產品

RZ1MZ1-K (XLPE-SWA-LSZH)
UNE 21123-4 Compliant | Multi-core LSZH Cable with Steel Wire Armour

The RZ1MZ1-K cable is a multi-core LSZH (Low Smoke Zero Halogen) cable with steel wire armour (SWA), manufactured to UNE 21123-4. It is designed for power and auxiliary fixed wiring in power networks, underground, outdoor, and indoor applications. This cable is specifically engineered for installations where fire, smoke emission, and toxic fumes create a potential threat to life and equipment.

ESEl cable RZ1MZ1-K es un cable LSZH (Bajo Humo Cero Halógenos) multinúcleo con armadura de alambre de acero (SWA), fabricado según UNE 21123-4. Está diseñado para cableado fijo de potencia y auxiliar en redes eléctricas, aplicaciones subterráneas, exteriores e interiores.

繁中RZ1MZ1-K 電纜是符合 UNE 21123-4 標準的多芯 LSZH(低煙無鹵)鋼絲鎧裝(SWA)電纜。它設計用於電力網路、地下、室外和室內應用中的電力和輔助固定布線。該電纜專為火災、煙霧排放和有毒煙霧對生命和設備構成潛在威脅的安裝環境而設計。【說明:RZ1MZ1-K 中的 “Z1″ 表示 LSZH 材料,”M” 表示鎧裝,”K” 表示柔性導體】

Cable Designation 電纜型號解讀: R = Rigid installation 固定安裝 | Z1 = LSZH compound 低煙無鹵化合物 | M = Steel wire armour 鋼絲鎧裝 | K = Flexible conductor 柔性導體
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Cable Construction | Construcción | 電纜結構

1
Conductor – Class 5 Flexible Copper
Conductor – Cobre Flexible Clase 5
導體 – 第5類柔性銅導體
Fine stranded bare copper conductor per EN 60228 Class 5. Sizes from 1.5mm² to 240mm². Maximum flexibility for installation in confined spaces. | 符合 EN 60228 第5類的細絞裸銅導體,尺寸從 1.5mm² 到 240mm²。
2
Insulation – XLPE (Cross-Linked Polyethylene)
Aislamiento – XLPE (Polietileno Reticulado)
絕緣層 – XLPE(交聯聚乙烯)
Cross-linked polyethylene insulation providing excellent dielectric properties, 90°C continuous operating temperature, and superior moisture resistance. | 交聯聚乙烯絕緣提供優異的介電性能、90°C連續工作溫度和卓越的防潮性。【說明:XLPE 的介電損耗比 PVC 低約10倍,適合高負載應用】
3
Bedding Layer – LSZH (Low Smoke Zero Halogen)
Capa de Relleno – LSZH (Bajo Humo Cero Halógenos)
墊層 – LSZH(低煙無鹵)
LSZH bedding provides separation between insulated cores and armour. Does not emit toxic or corrosive gases when exposed to fire. | LSZH墊層在絕緣線芯和鎧裝之間提供分隔。暴露於火災時不會釋放有毒或腐蝕性氣體。
4
Armour – Galvanized Steel Wires (SWA)
Armadura – Alambres de Acero Galvanizado
鎧裝 – 鍍鋅鋼絲(SWA)
Helically applied galvanized steel wires for mechanical protection against impact, crushing, and rodent damage. Provides earth fault current path. | 螺旋纏繞的鍍鋅鋼絲提供抗衝擊、抗壓扁和防鼠害的機械保護。可作為接地故障電流路徑。
5
Outer Sheath – LSZH (Green)
Cubierta Exterior – LSZH (Verde)
外護套 – LSZH(綠色)
Green LSZH outer sheath per IEC/EN 60754-1/2 and IEC/EN 61034-1/2. Flame retardant, low smoke emission, and halogen-free for fire safety applications. | 符合 IEC/EN 60754-1/2 和 IEC/EN 61034-1/2 的綠色 LSZH 外護套。阻燃、低煙排放、無鹵素,適用於防火安全應用。
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Core Identification | Identificación de Núcleos | 線芯識別

1 Core 單芯
Black 黑色
2 Core 雙芯
Blue, Brown 藍色, 棕色
3 Core 三芯
Grey, Black, Brown 灰, 黑, 棕
3 Core + Earth 三芯+地線
G/Y, Blue, Brown 黃綠, 藍, 棕
4 Core 四芯
Blue, Brown, Black, Grey
5 Core + Earth 五芯+地線
G/Y, Blue, Brown, Black, Grey
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Dimensional Data – 2 Core | Datos Dimensionales | 尺寸數據 – 雙芯

Part No.Size (mm²)Ø Under Armour (mm)Overall Ø (mm)Weight (kg/km)Min Bend Radius (mm)
A9RM020151.57.612.5290125
A9RM020252.58.413.3335135
A9RM0204049.514.4400145
A9RM02060610.615.5480155
A9RM02101012.518.1720185
A9RM02161614.520.1920205
A9RM02252517.824.21370245
A9RM0235352026.41680265
A9RM02505019.426.11835265
A9RM02707023.229.92420300
A9RM02959525.833.63175340
A9RM0212012029.237.43920375
A9RM0215015032.440.94680410
A9RM0218518535.645.45900455
A9RM0224024041.151.47485515
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Dimensional Data – 3 & 4 Core | 尺寸數據 – 三芯和四芯

3 Core 三芯

Part No.Size (mm²)Ø Under Armour (mm)Overall Ø (mm)Weight (kg/km)Min Bend (mm)
A9RM030151.5813320130
A9RM030252.58.913.9375140
A9RM03040410.115450150
A9RM03060611.316.2545165
A9RM03101013.318.9830190
A9RM03161615.521.11075215
A9RM03252519.125.61640255
A9RM03353521.728.22050285
A9RM03505023.330.92580310
A9RM03707027.535.23365355
A9RM03959530.638.84170390
A9RM0312012034.442.95070430
A9RM0315015038.548.36530485
A9RM0318518542.552.77735530
A9RM0324024048.759.49780595

4 Core 四芯

Part No.Size (mm²)Ø Under Armour (mm)Overall Ø (mm)Weight (kg/km)Min Bend (mm)
A9RM040151.58.914365140
A9RM040252.59.915435150
A9RM04040411.216.3530165
A9RM04060612.518.3735185
A9RM04101014.820.6990210
A9RM04161617.323.71405240
A9RM04252521.327.81960280
A9RM0435352430.82480310
A9RM04505025.733.43175335
A9RM04707030.438.64235390
A9RM04959533.942.35245425
A9RM0412012038.648.46900485
A9RM0415015042.8538295530
A9RM0418518547.157.79850580
A9RM0424024054.265.212560655
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Electrical Characteristics | Características Eléctricas | 電氣特性

Current carrying capacity values are provided for both air installation (at 40°C ambient) and direct ground burial (at 25°C soil temperature). Voltage drop values are provided for both unity power factor (cos φ = 1) and typical industrial power factor (cos φ = 0.8).

ESLos valores de capacidad de corriente se proporcionan para instalación en aire (a 40°C ambiente) y enterramiento directo (a 25°C de temperatura del suelo). Los valores de caída de voltaje se proporcionan para factor de potencia unitario y factor de potencia industrial típico.

繁中載流量數值同時提供空氣安裝(環境溫度40°C)和直埋(土壤溫度25°C)兩種情況。電壓降數值同時提供單位功率因數(cos φ = 1)和典型工業功率因數(cos φ = 0.8)。【說明:實際選型時需根據安裝方式選擇對應的載流量數據】

Current Carrying Capacity | 載流量

Size (mm²)2 Core (A) 雙芯3,4,5 Core (A) 多芯Voltage Drop (V/A/km) 電壓降
In Air 空氣中In Ground 直埋In Air 空氣中In Ground 直埋cos φ = 0.8cos φ = 1
1.52427202323.6129.374
2.53336263014.217.62
4454636388.83910.93
6575846485.9197.288
10797765643.4584.218
1610510087822.2182.672
251231281101061.4581.723
351541541371291.0571.224
501881831671520.7590.852
702442242141870.5560.601
952962652592220.4380.455
1203483023012530.3580.356
1504043423532860.3020.285
1854643833913200.2620.234
2405524424683700.2150.177

Air installation: 40°C ambient | Ground burial: 25°C soil | 空氣安裝:環境40°C | 直埋:土壤25°C

Conductor Resistance | 導體電阻

Size (mm²)Max Wire Ø (mm)DC Resistance @20°C (Ω/km)
1.50.2613.3
2.50.267.98
40.314.95
60.313.3
100.411.91
160.411.21
250.410.78
350.410.554
500.410.386
700.510.272
950.510.206
1200.510.161
1500.510.129
1850.510.106
2400.510.0801
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Applications | Aplicaciones | 應用場景

🏗️
Underground
Subterráneo
地下敷設
🏢
Indoor Install
Interior
室內安裝
🌧️
Outdoor Install
Exterior
室外安裝
🔥
Fire Safety Areas
Áreas de Seguridad
防火安全區域
⚡
Power Networks
Redes Eléctricas
電力網路
🛢️
Oil & Gas
Petróleo y Gas
石油與天然氣
🏭
Industrial Plants
Plantas Industriales
工業廠房
📦
Cable Ducting
Conductos
電纜管道
✅

Standards Compliance | Cumplimiento de Normas | 標準符合性

UNE 21123-4
XLPE + LSZH
Spanish Standard
EN 60228
Conductors
導體標準
HD 603
Distribution Cables
配電電纜
IEC 60332-1
Flame Test Single
單根燃燒試驗
IEC 60332-3
Flame Test Bunched
成束燃燒試驗
IEC 60754-1/2
Halogen Free
無鹵素
IEC 61034-1/2
Smoke Density
煙霧密度
CPR (EU)
Construction Products
建築產品法規
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Technical References | Referencias Técnicas | 技術參考資料

Standards Organizations | 標準組織
🔗
AENOR – Asociación Española de Normalización
Publisher of UNE standards, Spanish certification body | UNE 標準發布機構,西班牙認證機構
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UNE – Spanish Standardization
Official UNE standards database and information | 官方 UNE 標準數據庫和信息
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IEC – International Electrotechnical Commission
IEC 60228, IEC 60332, IEC 60754 standards | 國際電工委員會
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CENELEC – European Electrotechnical Standardization
HD 603 harmonized document | 歐洲電工標準化委員會
Technical Resources | 技術資源
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IEEE – Institute of Electrical Engineers
Technical papers on power cable systems | IEEE 電纜系統技術文獻
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Electrical Engineering Portal
Cable sizing and installation guides | 電纜選型和安裝指南
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Cableizer – Cable Sizing Software
Professional cable ampacity calculation tools | 專業電纜載流量計算工具
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BOE – Boletín Oficial del Estado
Spanish Official Gazette, REBT electrical regulations | 西班牙官方公報,REBT 電氣法規
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Contact Us | Contáctenos | 聯繫我們

For technical inquiries, quotations, and custom specifications for UNE 21123 cables and RZ1MZ1-K LSZH armoured cables, please contact our engineering and sales teams. We provide technical support and specification documentation in Spanish.

ESPara consultas técnicas, cotizaciones y especificaciones personalizadas de cables UNE 21123 y cables blindados RZ1MZ1-K LSZH, contacte a nuestros equipos de ingeniería y ventas. Proporcionamos soporte técnico y documentación en español.

繁中如需 UNE 21123 電纜和 RZ1MZ1-K LSZH 鎧裝電纜的技術諮詢、報價和定制規格,請聯繫我們的工程和銷售團隊。我們提供西班牙語技術支援和規格文件。

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Technical Support 技術支援

[email protected]
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Sales – Mr. Yang Zihao

[email protected]
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Sales – Ms. Huang Ziyu

[email protected]
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