FEICHUN CABLENSHTOEU4×35 mm²0.6/1 kVREELING POWER CABLECLASS 5 CONDUCTORPOLYESTER BRAIDRUBBER SHEATH
DE HIGHLY FLEXIBLE 4X35 MM2 REELING CABLE NSHTOEU 0.6/1KV — an engineering guide for dynamic power service
This article treats DE HIGHLY FLEXIBLE 4X35 MM2 REELING CABLE NSHTOEU 0.6/1KV as the purchaser’s supplied description and translates it into a controlled cable specification. The published NSHTOEU reference construction is a four-core, 35 mm²-per-core, 0.6/1 kV flexible reeling cable with fine-stranded tinned copper, rubber/EPR insulation, a rubber inner sheath, polyester reinforcement and a heavy-duty rubber outer sheath [1]. Feichun can develop a functional equivalent, but the released drawing, test plan and project conditions must govern the final product.
Voltage class
0.6/1 kV
Low-voltage dynamic power cable, not medium voltage.
Power configuration
4×35 mm²
Four reference power cores, 35 mm² each.
Dynamic geometry
≥230 mm
Published minimum free-moving bending radius for the 4×35 row.
Reference capacity
162 A
Nominal current on a surface at 30 °C ambient, subject to derating.
Contents
- Engineering position
- How to read the supplied designation
- Standards and source hierarchy
- Construction and load path
- Complete 4×35 mm² reference data
- Derived checks engineers can reproduce
- Electrical and thermal behaviour
- Reeling mechanics: bend, tension and torsion
- Environmental and fire boundary
- Application scenarios
- Installation and drum controls
- Selection comparison
- Failure-mode controls
- RFQ-ready technical request
- Feichun functional-equivalent manufacturing
- Feichun certification scope
- Source audit and release note
1. Engineering position: a reeling cable is a motion system, not only a conductor size
NSHTOEU is used for flexible low-voltage reeling cable service where the cable is repeatedly paid out, guided, bent and recovered. The 4×35 mm² reference row belongs to the four-core power-cable group and is published for medium mechanical stress, with a 0.6/1 kV rating, 90 °C maximum conductor temperature, torsional stress of ±50°/m and reeling operation up to 120 m/min [1]. Those values are useful design gates; they are not a substitute for a reel-specific duty calculation.
Electrical job
Carry a three-phase or multi-conductor power load at 0.6/1 kV while keeping conductor resistance, voltage drop, fault current and terminal temperature within the project limits.
Carry a three-phase or multi-conductor power load at 0.6/1 kV while keeping conductor resistance, voltage drop, fault current and terminal temperature within the project limits.
Mechanical job
Survive repeated curvature, tensile loading, torsion and contact with guides or a drum. The braid and sheath system matter as much as the copper cross-section.
Survive repeated curvature, tensile loading, torsion and contact with guides or a drum. The braid and sheath system matter as much as the copper cross-section.
Thermal job
Remove heat from four loaded cores under the real installation condition. The published 162 A is a reference value at 30 °C ambient on a surface, not a universal design current.
Remove heat from four loaded cores under the real installation condition. The published 162 A is a reference value at 30 °C ambient on a surface, not a universal design current.
Interface job
Transfer the cable into the reel, gland, connector, motor, machine or switchboard without locking the cable in torsion or transferring pulling force into the conductor terminations.
Transfer the cable into the reel, gland, connector, motor, machine or switchboard without locking the cable in torsion or transferring pulling force into the conductor terminations.
First engineering rule: the string
4X35 fixes the nominal core size, but it does not by itself fix the earth-core arrangement, outer diameter, radius, sheath compound, approvals, drum geometry or accessories. These fields must be released together.2. How to read the supplied designation without over-interpreting it
| Supplied text / field | Engineering reading | What remains to be confirmed | Status |
|---|---|---|---|
| DE HIGHLY FLEXIBLE 4X35 MM2 REELING CABLE NSHTOEU 0.6/1KV | The complete purchaser descriptor retained exactly for search and quotation traceability. | Whether DE is a buyer code, project prefix or supplier wording; it is not expanded into a technical standard. | User-supplied descriptor |
| NSHTOEU | A German-style heavy-duty rubber reeling-cable family designation; the public reference uses NSHTOEU and cites DIN VDE 0250-814. | Exact manufacturer construction, current edition, certificate scope and suffix. | Public reference family |
| 4×35 mm² | Four nominal power cores, each with a 35 mm² cross-sectional area in the reference row. | Whether the delivered cable is 4-core, 4G35, 4×35 plus a separate earth, or another project-specific arrangement. | Configuration field |
| 0.6/1 kV | Rated voltage U₀/U, also shown as 600/1000 V in the public reference. | System grounding, maximum operating voltage, test voltage and accessory rating. | Electrical field |
| Highly flexible / reeling | Dynamic use with bending, tensile and torsional stresses; the reference gives a speed and free-moving radius. | Travel length, cycles, acceleration, drum type, layer count, guide geometry and actual duty class. | Application field |
| -J / -O suffix | The public table identifies the four-core row as NSHTOEU-J, while the supplied request does not state a suffix. | Do not infer a green/yellow earth core or a no-earth design from 4×35 alone. | Open RFQ item |
Search terminology note: catalogues may write
NSHTÖU, NSHTOU or NSHTOEU. For this article, the ASCII spelling NSHTOEU follows the supplied title and the public reference. The spelling alone does not prove that two products have the same sheath system, radius or approvals.3. Standards and source hierarchy
| Reference | Role in this article | Engineering interpretation | Boundary |
|---|---|---|---|
| Prysmian Low Voltage Reeling Cables catalogue | Primary public reference for the NSHTOEU family and the 4×35 mm² row. | The catalogue gives the construction, voltage, thermal, chemical, mechanical and row data reproduced below. | Revision dated 23 February 2016; request current controlled data before order. |
| IEC 60228:2023 | Independent standard context for conductor nominal areas, wire sizes and resistance values. | The IEC page covers stranded copper and flexible copper conductors; the product reference separately names DIN EN 60228 / DIN VDE 0295 class 5. | Do not convert a generic IEC reference into a product certificate without a conformity file. |
| DIN VDE 0298-4:2023-06 | Current standard-status reference for recommended current-carrying capacity of flexible cables. | The source catalogue cites VDE 0298-4 for current capacity; project calculations must use the adopted edition and real installation. | The catalogue row condition is surface, 30 °C ambient; grouping and heat dissipation still need correction. |
| IEC 60332-1-2:2025 | Fire-test context for a single vertical insulated wire or cable using a 1 kW pre-mixed flame. | A single-cable flame test is narrower than a grouped-cable fire-propagation classification. | Do not market this reference as CPR, LSZH or a grouped-cable class without product-specific evidence. |
| Feichun project dossier | Governing release record for the manufactured cable. | Conductor, compounds, braid, OD, mass, radius, tensile, torsion, current, tests, marking and certificate scope must match the ordered configuration. | Required before production |
Evidence rule: the public catalogue is a reference source, not a Feichun certificate. Values below are labelled as public reference, derived check or Feichun confirmation item so a buyer can see exactly what is known.
4. Construction and load path
Figure 1 — Reference NSHTOEU layer system. The public source describes the family construction; Feichun production drawings govern actual thicknesses, lay lengths, compound designations and suffix-specific core identification.
| Layer / feature | Public reference description | Why it matters in service | Evidence status |
|---|---|---|---|
| 1. Conductor | Tinned copper, flexible class 5 according to DIN EN 60228 / DIN VDE 0295. | Fine stranding allows the conductor to accommodate repeated curvature; tinned surfaces improve stability in damp or corrosive environments. | Public reference |
| 2. Insulation | Rubber compound type 3GI3 according to DIN VDE 0207-20. | The dielectric must tolerate repeated flexing, conductor temperature and the electrical test level without cracking or loss of insulation performance. | Public reference |
| 3. Core arrangement | Up to five cores: coloured according to DIN VDE 0293-308; central plastic or textile filler where necessary; cores twisted with short lay. | Short lay and filler control the bundle geometry and reduce uncontrolled movement inside the sheath. | Public reference |
| 4. Inner sheath | Rubber compound type 5GM3 according to DIN VDE 0207-21. | Creates a coherent support layer around the laid-up cores before the reinforcement and outer jacket. | Public reference |
| 5. Reinforcement | Wide-meshed polyester braid embedded in the sheath. | Distributes tensile and torsional stress through the sheath system; it is not a permission to pull the cable by arbitrary force. | Public reference |
| 6. Outer sheath | Extruded rubber compound type 5GM5; abrasion and tear resistant, oil and flame resistant; black. | Provides the external contact surface against guides, drum layers and the working environment. | Public reference |
| 7. Marking | White imprint: NSHTOEU-J (number of cores) × (cross-section) TROMMELFLEX(K) with meter marking. | A Feichun marking must identify the released product code, size, voltage and traceability fields without copying a third-party brand or trademark. | Public reference / Feichun release |
| 8. Earth-core / suffix | Not stated in the purchaser string. The public reference table heading is NSHTOEU-J for the four-core power design. | Confirm whether the ordered construction includes the protective conductor and how the cores are marked. | Open RFQ item |
Do not confuse braid with armour
The polyester braid is an integrated reinforcement within a rubber sheath system. It is not a metallic armour layer and it does not replace a separate earth or screen.
The polyester braid is an integrated reinforcement within a rubber sheath system. It is not a metallic armour layer and it does not replace a separate earth or screen.
Do not assume a shield
The public 4×35 row is a power-cable construction, not a shielded instrumentation cable. EMC and VFD requirements need a separate review.
The public 4×35 row is a power-cable construction, not a shielded instrumentation cable. EMC and VFD requirements need a separate review.
Do not assume a suffix
4×35 defines four 35 mm² cores in the reference row; whether the cable is 4G35, 4×35 without PE, or another configuration is an RFQ decision.End restraint is part of the construction
Use a termination and strain-relief system that matches the actual jacket diameter, bend radius, conductor arrangement and reeling movement.
Use a termination and strain-relief system that matches the actual jacket diameter, bend radius, conductor arrangement and reeling movement.
5. Complete 4×35 mm² public reference data
| Parameter | 4×35 mm² reference value | Engineering meaning | Status |
|---|---|---|---|
| Product family | TROMMELFLEX (K) NSHTOEU | Public low-voltage reeling-cable reference family. | Public reference |
| Reference row | NSHTOEU-J power cables, four-core design | The public table heading for the 4×35 row; the user’s exact suffix remains to be confirmed. | Public reference / suffix check |
| Nominal core size | 4×35 mm² | Four nominal 35 mm² power cores; total nominal copper area is 140 mm² by arithmetic. | Source + derived |
| Maximum conductor diameter | 8.2 mm | Maximum conductor diameter listed for the 4×35 row. | Public reference |
| Outer diameter | 35.9–38.3 mm | Use the ordered construction’s controlled OD for guides, glands, drum geometry and radius checks. | Public reference |
| Minimum free-moving bending radius | 230 mm | Published row value; approximately 6.0× the maximum listed OD. | Public reference + derived |
| Approximate cable weight | 2220 kg/km | Approximately 2.22 kg/m for drum loading and support calculations. | Public reference |
| Permissible tensile force, maximum | 2100 N | Published conductor-related tensile-force row value; do not transfer this directly to a pulling winch without the method statement. | Public reference |
| Conductor resistance at 20 °C, maximum | 0.57 Ω/km | Use for voltage-drop and loss calculations with the correct circuit arrangement and temperature correction. | Public reference |
| Current-carrying capacity | 162 A | Nominal capacity for rubber cables laid on a surface at 30 °C ambient, referenced to VDE 0298-4 Table 15. | Public reference / condition-bound |
| Short-circuit current, conductor | 4.27 kA | Public table value; confirm the duration, fault path and accessory coordination before using it in a protection study. | Public reference / duration to confirm |
| Rated voltage | 0.6/1 kV (600/1000 V) | Low-voltage power cable rating; maximum permissible AC and DC operating voltages are listed separately below. | Public reference |
| Source revision | 23 February 2016 | The catalogue states that technical data, dimensions and weights are subject to change. | Public metadata |
Source fidelity: the reference row has no independent manufacturer part number printed beside the 4×35 mm² entry. Feichun should issue a controlled product code, drawing number, batch traceability and current test record for the actual quotation.
6. Derived checks an engineer can reproduce
Nominal copper area: Atotal = 4 × 35 = 140 mm²
Tensile screening check: 15 N/mm² × 140 mm² = 2100 N (matches the public row)
Radius ratio screening: 230 mm ÷ 38.3 mm = 6.01 × D
Current-density screening: 162 A ÷ 140 mm² = 1.16 A/mm²
Approximate mass per metre: 2220 kg/km ÷ 1000 = 2.22 kg/m
| Check | Calculation | What the result tells the project team | Boundary |
|---|---|---|---|
| Copper area | 4 × 35 = 140 mm² | Useful for current-density and tensile screening. | Derived |
| Conductor tensile screening | 15 N/mm² × 140 mm² = 2100 N | Explains the published 2100 N row and creates a traceable check. | Do not treat this as a blanket permissible pull at the cable end. |
| Bend-radius ratio | 230 / 38.3 = 6.01D | The row’s radius is about six times the maximum listed OD. | The supplier’s definition of radius and the actual drum geometry still govern. |
| Current density | 162 / 140 = 1.16 A/mm² | A comparison indicator for thermal screening. | Not an ampacity design rule; use the adopted VDE method and correction factors. |
| Drum barrel screen | 2 × 230 = 460 mm diameter | A first geometric screen for a barrel whose cable bend radius is at least 230 mm. | Not a final drum specification: wrap layers, flattening, flange and manufacturer method must be verified. |
| Mass per metre | 2220 / 1000 = 2.22 kg/m | Supports handling, reel inertia and support-spacing estimates. | The source labels the weight approximate; confirm the released cable mass. |
Derived values are not new catalogue claims. They are arithmetic checks made from the public reference values. If Feichun changes the sheath compound, braid, lay or diameter, the calculations must be rerun from the released data.
7. Electrical and thermal behaviour
| Electrical / thermal field | Public reference value | How to use it | Evidence status |
|---|---|---|---|
| Rated voltage U₀/U | 0.6/1 kV (600/1000 V) | Coordinate the system voltage, maximum operating voltage, switching, terminations and connectors. | Public reference |
| Maximum permissible AC operating voltage | 0.7/1.2 kV | A separate operating-voltage field in the public catalogue; do not confuse it with U₀/U. | Public reference |
| Maximum permissible DC operating voltage | 0.9/1.8 kV | Relevant only where the project is a DC system and the exact cable configuration is approved for it. | Public reference |
| AC test voltage | 2.5 kV for 5 minutes | Use as a public reference test field; the final routine, sample and type-test plan must be issued by Feichun. | Public reference |
| Maximum conductor temperature | 90 °C | Check load, ambient, grouping, contact with drum layers, ventilation, connector temperature and duty cycle. | Public reference |
| Short-circuit conductor temperature | 250 °C | Coordinate conductor fault duty with protection clearing time, conductor material and termination capability. | Public reference |
| Current-carrying capacity | 162 A | Source condition: rubber cable laid on a surface, 30 °C ambient; cited against VDE 0298-4 Table 15. | Condition-bound reference |
| Conductor resistance | 0.57 Ω/km maximum at 20 °C | Use circuit length, phase arrangement and temperature correction for voltage-drop and loss calculations. | Public reference |
Why 162 A is not a universal rating
A reel can have multiple cable layers, restricted heat dissipation, intermittent loading and a different ambient. The final ampacity may be lower after applying the adopted standard and project correction factors.
A reel can have multiple cable layers, restricted heat dissipation, intermittent loading and a different ambient. The final ampacity may be lower after applying the adopted standard and project correction factors.
Why 90 °C is not an ambient limit
It is the maximum conductor temperature. The public family reference separately gives fixed ambient -40…+80 °C and fully flexible ambient -25…+80 °C.
It is the maximum conductor temperature. The public family reference separately gives fixed ambient -40…+80 °C and fully flexible ambient -25…+80 °C.
Why 0.57 Ω/km needs temperature context
Resistance rises with temperature. Use the supplier's temperature-correction method and the actual current waveform, not a 20 °C number copied into a hot-duty calculation.
Resistance rises with temperature. Use the supplier's temperature-correction method and the actual current waveform, not a 20 °C number copied into a hot-duty calculation.
Why short-circuit data needs a time base
The row reports 4.27 kA, but the project protection study must confirm duration, screen or earth path, connector duty and the exact Feichun test basis.
The row reports 4.27 kA, but the project protection study must confirm duration, screen or earth path, connector duty and the exact Feichun test basis.
8. Reeling mechanics: bend radius, tension and torsion
Figure 2 — Dynamic path controls for the 4×35 mm² reference row. The cable, reel, guide and end restraint must be treated as one mechanical system.
| Mechanical field | Reference value | Practical engineering interpretation | Release control |
|---|---|---|---|
| Free-moving bending radius | 230 mm minimum | Maintain the specified curvature during payout, return, guide entry and reversal. | Verify the cable supplier’s radius definition and the actual 4×35 OD. |
| Maximum tensile load on conductor | 15 N/mm² | The family-level mechanical parameter used to explain the 2100 N row. | Do not use conductor tension as a cable-pulling approval; control load transfer at both ends. |
| Permissible tensile force, row | 2100 N maximum | A published 4×35 row value that aligns with 15 N/mm² × 140 mm². | Winch force, acceleration and emergency-stop loads require a project method statement. |
| Torsional stress | ±50°/m | The cable must be allowed to rotate or be guided without accumulating corkscrew twist. | Check reel axis, guide orientation, S-bends, clamp spacing and termination rotation. |
| Reeling speed | Up to 120 m/min | A source-family reference for reeling operation. | Confirm speed under the actual radius, acceleration, temperature and duty cycle. |
| Minimum distance with S-type changes | Not stated for this TROMMELFLEX (K) row | Do not import a distance from another NSHTOEU construction. | Feichun confirmation |
Field experience: most dynamic-cable damage is not caused by nominal cross-section alone. Look first at a tight guide entry, forced twist at the reel, unsupported cable weight, sidewall pressure, a termination that blocks rotation, or a drum layer that creates a local reverse bend.
9. Environmental and fire boundary
| Condition / property | Public reference statement | What a port, mine or plant engineer should check | Status |
|---|---|---|---|
| Fixed ambient | -40…+80 °C | Cold start, impact, bending and storage conditions at the lowest actual temperature. | Public reference |
| Fully flexible ambient | -25…+80 °C | The moving duty temperature range, including wind, sunlight, drum heat and intermittent loading. | Public reference |
| Outer sheath | 5GM5 rubber compound; abrasion and tear resistant; oil and flame resistant. | Oil type, hydraulic fluid, fuels, salt water, cleaning chemicals, grit, UV and contact pressure. | Public reference / schedule required |
| Oil resistance | EN 60811-404; ASTM No. 2 for 24 h at 100 °C | Use as the public reference test condition, then compare the actual oil or hydraulic-fluid schedule and exposure time. | Public reference / condition-bound |
| Fire resistance | IEC 60332-1 (EN 50265-2-1) listed by the reference. | The source points to a single-cable fire test. If the route uses cable groups, vertical shafts or fire compartments, request the relevant group/fire dossier. | Public reference / limited scope |
| Water resistance | Not stated in the TROMMELFLEX (K) global data shown. | Mining and port routes may need water immersion, splash, mud, drainage and chemical compatibility evidence. | Not supplied |
| Halogen-free / LSZH | Not claimed in the public NSHTOEU reference. | Do not describe this rubber construction as LSZH or halogen-free without a matching compound declaration and test evidence. | Not supplied |
| ATEX / IECEx | Not established by the NSHTOEU catalogue excerpt. | If the final installation is in a hazardous area, certify the complete equipment and cable system as required by the project; do not infer certification from cable family name. | Project-specific |
Oil is not one universal condition
Request the actual fluid list and exposure time. “Oil resistant” in a catalogue is not a blanket statement for every hydraulic, fuel, solvent or cleaning chemical.
Request the actual fluid list and exposure time. “Oil resistant” in a catalogue is not a blanket statement for every hydraulic, fuel, solvent or cleaning chemical.
Fire marks have a defined scope
IEC 60332-1-2 describes a single vertical cable test. IEC itself warns that the single-cable method does not provide grouped-cable fire propagation compliance.
IEC 60332-1-2 describes a single vertical cable test. IEC itself warns that the single-cable method does not provide grouped-cable fire propagation compliance.
Outdoor service needs more than a black sheath
Check UV, ozone, salt spray, water ingress, grit, temperature and support hardware together. Weather resistance must be documented for the exact compound.
Check UV, ozone, salt spray, water ingress, grit, temperature and support hardware together. Weather resistance must be documented for the exact compound.
Hazardous-area compliance is a system decision
ATEX or IECEx status must be matched to the exact equipment, cable construction, installation and certificate scope. It should not be added as a decorative badge.
ATEX or IECEx status must be matched to the exact equipment, cable construction, installation and certificate scope. It should not be added as a decorative badge.
10. Application scenarios for engineers
Figure 3 — Typical engineering scenarios. These are application patterns, not an automatic approval for every port, mine or crane project.
Motor-driven reel
Suitable when the cable is continuously paid out and rewound within the specified speed, radius, tension and torsion envelope.
Suitable when the cable is continuously paid out and rewound within the specified speed, radius, tension and torsion envelope.
Crane or hoist
Check the rope or cable route, suspended weight, acceleration, guide rollers, end termination and any simultaneous torsion.
Check the rope or cable route, suspended weight, acceleration, guide rollers, end termination and any simultaneous torsion.
Mining mobile equipment
Check abrasion, mud, water, chemical contact, travel length, impact and reel duty. Underground use needs a separate fire and environmental dossier.
Check abrasion, mud, water, chemical contact, travel length, impact and reel duty. Underground use needs a separate fire and environmental dossier.
Festoon or guided path
Check support spacing, trolley geometry, compression at bends, return path and whether the cable is free to rotate rather than forced into twist.
Check support spacing, trolley geometry, compression at bends, return path and whether the cable is free to rotate rather than forced into twist.
11. Installation and drum controls
- Identify the exact cable. Put the Feichun product code, suffix, core identification, OD range and drawing revision on the drum schedule.
- Check the drum and guide. Use the published 230 mm minimum free-moving radius as the starting gate; do not create a smaller local bend at the flange, roller or gland.
- Control payout direction. Align the drum with the cable route, keep the cable tangent to the reel and avoid reverse winding, uncontrolled twist and flange impact.
- Control tension. Use a pull monitor or defined method statement. The 2100 N row value is not a substitute for a cable-pulling calculation, especially under acceleration or emergency stop.
- Control the cable layers. Keep wraps even, prevent crossover and record the number of layers used for the thermal and mechanical design.
- Protect the entry and exit. Use bend-control and strain-relief hardware that matches the released OD, jacket compound and dynamic movement.
- Inspect before energisation. Verify jacket, marking, core identification, conductor continuity/resistance, insulation, test results, termination torque and earth-core arrangement.
Drum note: the derived 460 mm barrel-diameter screen (2×230 mm) is only a geometric starting point. A final reel must also account for cable flattening, multiple wraps, flange clearance, layer transition, speed, acceleration and the reel manufacturer's design.
12. Selection comparison: where this cable fits — and where it does not
| Requirement | NSHTOEU 4×35 reference | Do not assume | Engineering decision |
|---|---|---|---|
| 0.6/1 kV dynamic power | Direct family fit; 4×35 row published. | That every 4×35 rubber cable has the same radius, current or tensile data. | Use the controlled 4×35 reference row and project conditions. |
| Repeated reeling | Family parameter includes reeling operation up to 120 m/min. | That speed applies at every radius, temperature, acceleration or layer count. | Confirm the reel duty envelope. |
| High torsion | Family torsional-stress value ±50°/m; polyester braid embedded in sheath. | That the braid makes the cable immune to accumulated twist or termination restraint. | Design rotation and guide geometry. |
| Fixed rubber feeder | May have adequate voltage and current but not dynamic mechanical evidence. | That electrical equivalence is mechanical equivalence. | Do not substitute by cross-section alone. |
| Simple spring reel | May be possible only after speed, cycle, radius and tension check. | That a simple-reeling family can replace an anti-torsion heavy-duty cable. | Match the mechanical duty, not the label. |
| LSZH / fire-compartment route | Not claimed by the public NSHTOEU reference. | That rubber and flame resistance equal LSZH or CPR performance. | Request the exact fire dossier or select another construction. |
| Hazardous area | Not proven by this catalogue excerpt. | That NSHTOEU naming equals ATEX or IECEx certification. | Confirm system certification and destination requirements. |
13. Failure-mode controls
| Failure mode | Mechanism | Control action | Release evidence |
|---|---|---|---|
| Wrong suffix / earth arrangement | 4×35 is treated as automatically equal to 4G35, 4×35 without PE or a three-phase-plus-earth special construction. | State the suffix, core identification, earth-core size and termination scheme in the RFQ. | Released drawing and marking |
| Radius violation | A guide, flange or gland imposes a radius smaller than 230 mm. | Measure the minimum installed radius through payout, return and reversal; control rollers and support spacing. | Method statement + inspection |
| Torsion accumulation | Cable is clamped or terminated so it cannot rotate while the reel reverses. | Use aligned guides, allow controlled rotation and inspect for corkscrew deformation. | Dynamic test / commissioning record |
| Pull transferred into conductors | Winch or machine motion applies axial load through the cores or terminals. | Use cable-compatible strain relief and monitor force; the 2100 N row value is not an unrestricted pull rating. | Pull method + termination approval |
| Thermal overrating | 162 A is copied into a multi-layer drum, hot ambient or grouped route without correction. | Recalculate with the adopted VDE method, real ambient, duty cycle, grouping and heat dissipation. | Thermal calculation |
| Outer sheath chemical attack | Oil-resistant is assumed to cover an unlisted fluid or solvent. | Provide the chemical schedule and request compound compatibility evidence. | Chemical declaration / test |
| Fire-class overstatement | IEC 60332-1 is rewritten as LSZH, CPR, Cca or grouped-cable fire performance. | Use only the exact fire test and declaration supplied for the ordered cable. | Fire dossier |
| Old reference revision | 2016 catalogue values are treated as a current production guarantee. | Request current Feichun controlled data, batch record and inspection plan before purchase. | Controlled revision register |
14. RFQ-ready technical request
The most useful request to a cable factory is not “send a 4×35 flexible cable”. It is a short, auditable duty description. The following fields allow Feichun to quote a complete functional equivalent without filling in hidden assumptions.
Figure 4 — A practical RFQ release flow for an NSHTOEU 4×35 mm² reeling cable.
| RFQ field | Requested entry | Why it matters |
|---|---|---|
| Buyer description | DE HIGHLY FLEXIBLE 4X35 MM2 REELING CABLE NSHTOEU 0.6/1KV | Preserves the source wording and makes search / quotation traceable. |
| Cable family / standard basis | NSHTOEU; public reference cites DIN VDE 0250-814 | Sets the intended dynamic-cable family while leaving the current conformity file to be confirmed. |
| Core configuration | 4 × 35 mm²; confirm -J / -O / 4G35 or project-specific earth-core arrangement | Prevents a four-core power cable from being quoted with the wrong protective-conductor configuration. |
| Rated voltage | 0.6/1 kV; state AC or DC service | Determines insulation, test and accessory requirements. |
| Dynamic duty | Reel type; travel length; cycles/day; speed; acceleration; reversal frequency; torsion; S-bends | Mechanical life depends on motion history, not only the cable label. |
| Geometry | Actual drum barrel diameter; number of layers; flange; guide rollers; minimum installed radius; support spacing | Controls bending, contact pressure, crossover and heat dissipation. |
| Electrical duty | Load current; simultaneity; starting current; load type; voltage drop; short-circuit clearing time | Allows current, resistance, fault and termination checks. |
| Environment | Ambient; sunlight; water; mud; salt; oil / hydraulic fluid; chemicals; dust; indoor / outdoor; mining or port route | Determines compound, sheath and test evidence. |
| Mechanical restraint | Maximum controlled pull; end termination; strain relief; connector / gland; machine interface | Prevents conductor or sheath load transfer at the ends. |
| Fire and certification | Required IEC / EN / DIN / VDE / CPR / ATEX / IECEx / local documents | Ensures the certificate request matches the actual cable and destination market. |
| Supply boundary | Cable only or cable with drum, gland, connector, termination, test report and marking | Avoids accessories and interfaces being silently omitted or added. |
| Quality dossier | Routine tests, type tests, dimensional report, resistance, voltage test, fire / oil evidence, reel test and batch traceability | Turns a visually similar cable into an auditable engineering deliverable. |
15. Feichun functional-equivalent manufacturing
Feichun Cable can manufacture a complete functional-equivalent replacement for the requested 4×35 mm² NSHTOEU reeling cable when the electrical, mechanical, environmental and interface requirements are released as one controlled specification. The objective is equivalent function and documented performance—not a copied drawing, copied trademark, copied marking or unreviewed imitation of a proprietary product.
Electrical equivalence
Match four 35 mm² power cores, voltage class, resistance, temperature, current basis, test voltage and termination compatibility.
Match four 35 mm² power cores, voltage class, resistance, temperature, current basis, test voltage and termination compatibility.
Mechanical equivalence
Match or improve the required OD, free-moving radius, tensile duty, torsional duty, speed, lay, braid system and end strain relief.
Match or improve the required OD, free-moving radius, tensile duty, torsional duty, speed, lay, braid system and end strain relief.
Environmental equivalence
Match the actual oil, abrasion, flame, UV, water, temperature, mining or port route requirements rather than copying a generic marketing sentence.
Match the actual oil, abrasion, flame, UV, water, temperature, mining or port route requirements rather than copying a generic marketing sentence.
Evidence equivalence
Issue a controlled drawing, compound list, dimensional report, routine tests, agreed type tests, marking, drum schedule and certificate scope for the Feichun product.
Issue a controlled drawing, compound list, dimensional report, routine tests, agreed type tests, marking, drum schedule and certificate scope for the Feichun product.
| Replacement dossier item | Feichun release question | Reason |
|---|---|---|
| Conductor | Class 5 tinned copper; four 35 mm² cores; IEC / DIN conductor evidence. | Flexibility, resistance and termination fit are configuration-specific. |
| Insulation and sheaths | Confirm rubber / EPR compounds, 3GI3 / 5GM3 / 5GM5 equivalence or the approved alternative. | Compound substitution changes temperature, oil, flame, abrasion and dynamic behaviour. |
| Reinforcement | Confirm polyester braid construction, coverage, embedding and tensile method. | The braid is part of the mechanical load path and cannot be replaced by a marketing label. |
| Dimensions | Confirm 35.9–38.3 mm target or the approved Feichun dimensional range, mass and marking. | OD controls radius, reel capacity, gland selection and thermal geometry. |
| Dynamic verification | Agree radius, speed, tension, torsion, cycle, temperature and inspection method. | A static sample cannot demonstrate a dynamic cable’s service behaviour. |
| Legal / IP review | Screen trademarks, patents, drawings and destination-country restrictions before launch. | Functional equivalence does not automatically establish freedom to operate. |
IP boundary: Feichun can develop an independently documented equivalent design, but no supplier should promise “zero patent risk” from a cable name alone. Use a freedom-to-operate workflow, compare claims and drawings, and obtain destination-country legal review where the commercial risk warrants it. The WIPO FTO toolkit and the USPTO Patent Public Search portal are practical starting points for that review.
16. Feichun certification scope and project assurance
Engineered for maximum safety in demanding environments, our cable systems comply with global standards including ATEX, IECEx, VDE, CE, UKCA, EAC, and the Russian Fire Safety Certificate. They are the trusted choice for heavy-duty mining equipment, ship-to-shore cranes, RTG/RMG cranes, and conveyor systems where high reliability is non-negotiable.
Certification is configuration-specific
Certificate scope must match the exact 4×35 mm² construction, suffix, sheath compound, destination market, accessory system and shipment batch.
Certificate scope must match the exact 4×35 mm² construction, suffix, sheath compound, destination market, accessory system and shipment batch.
Feichun dossier advantage
Request one coordinated pack: drawing, dimensions, mass, resistance, voltage test, fire and chemical declarations, dynamic test record, marking and batch traceability.
Request one coordinated pack: drawing, dimensions, mass, resistance, voltage test, fire and chemical declarations, dynamic test record, marking and batch traceability.
Export-engineering advantage
Feichun can organize the technical response around the buyer's standard, project route, port or mining environment and destination-country documentation needs.
Feichun can organize the technical response around the buyer's standard, project route, port or mining environment and destination-country documentation needs.
Do not overstate the badge
ATEX, IECEx, VDE, CE, UKCA, EAC and Russian Fire Safety documents must be checked against the exact cable and intended use; capability is not automatic certification of every size.
ATEX, IECEx, VDE, CE, UKCA, EAC and Russian Fire Safety documents must be checked against the exact cable and intended use; capability is not automatic certification of every size.
17. Source audit and release note
| Source | Use in this article | Status / limitation |
|---|---|---|
| Prysmian — Low Voltage Reeling Cables PDF | Primary public reference for TROMMELFLEX (K) NSHTOEU construction, electrical, chemical, thermal, mechanical and 4×35 row data. | Catalogue revision 23 February 2016; the PDF itself says technical data, dimensions and weights are subject to change. |
| IEC 60228:2023 | Independent context for nominal conductor areas, stranded conductors and resistance values. | Standard context only; exact Feichun conformity must be documented. |
| DIN VDE 0298-4:2023-06 | Current-status reference for flexible-cable current-carrying-capacity practice. | The catalogue cites VDE 0298-4; project calculation must use the adopted edition and actual route. |
| IEC 60332-1-2:2025 | Explains why a single-cable vertical flame test is not the same as grouped-cable fire propagation compliance. | Used for scope clarification, not as a new product claim. |
| WIPO Freedom-to-Operate Toolkit | Reference for the IP / FTO workflow used in the functional-equivalent section. | Legal review remains jurisdiction- and claim-specific. |
| USPTO Patent Public Search | Public patent-search starting point for the replacement-product IP screen. | A search result is not a legal opinion or a complete global FTO analysis. |
| User-supplied request | DE HIGHLY FLEXIBLE 4X35 MM2 REELING CABLE NSHTOEU 0.6/1KV | Primary purchaser wording retained exactly; missing fields are deliberately not invented. |
This guide supports technical search, comparison and preliminary RFQ work. Before manufacture or installation, release the exact Feichun product drawing, suffix, core identification, OD, mass, bending radius, current conditions, tensile and torsional limits, chemical and fire evidence, dynamic test plan, accessories and destination-market certificates.
![The supplied string combines a VAHLE procurement or marking reference with the TFCrane family name and the medium-voltage configuration 3×35 + 3×25/3. The current public TFCrane catalogue identifies the corresponding R-(N)TSCGEWÖU family as a flexible medium-voltage reeling cable based on DIN VDE 0250-813, with four selectable voltage classes from 3.6/6 kV to 12/20 kV [2]. Because the user string does not state the voltage class, this guide preserves every published variant and makes the voltage selection a deliberate RFQ gate.](https://feichuncables.com/blog/wp-content/uploads/image-1778-400x225.avif "LT-GUM-R-TFCRANE (N) TSCGEWOEU 3X35 & 3X25/3 REELING CABLE TFCRANE R MARK VAHLE — VAHLE marking, TFCrane reference and Feichun equivalent engineering guide 2")
