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NTSCGECECWOU 8.7/15kV and 12/20kV Cable

NTSCGECECWOU 8.7/15kV and 12/20kV cable is a flexible medium voltage power cable manufactured according to DIN VDE 0250 standards, engineered for heavy-duty energy supply in mining, tunneling, and mobile equipment applications. Featuring Class 5 tinned copper conductors, EPR insulation, a halogen-free flame-retardant sheath, and concentric copper conductors for EMC protection, it ensures outstanding mechanical strength, oil and moisture resistance, and fire safety. Designed for reeling drum systems and mobile machinery, it is ideal for both indoor and outdoor use in harsh, demanding environments.

Voltage Rating Uo/U 8.7/15kV | 12/20kV

Test Voltage 8.7/15kV: 24kV
12/20kV: 29kV

Temperature Rating Fixed: -40°C to +80°C
Flexed: -25°C to +80°C

Minimum Bending Radius Fixed: 6 x overall diameter
Flexed: 10 x overall diameter

Maximum Torsional Stress ±25°/m

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Construction

Technical Specifications

Quality Control

Application

Construction

NTSCGECECWOU 8.7/15kV and 12/20kV Cable Constrution

Phase Conductor

Class 5 tinned copper conductor

Insulation

Rubber compound

Protective Earth Conductor

Individual copper wire screen

Control Conductor

Class 5 tinned copper

Central Filler

Semi-conductive compound on a polyester textile support

Inner Sheath

Rubber Compound

Monitoring Conductor

Copper wire screen over the inner sheath

Outer Sheath

Rubber Compound

Sheath Colour

Red

Manufacturer Standard

VDE 0250 Part 813, VDE 0295, EN 60228

Flame Retardant

IEC/EN 60332-1-2

Semi-Conductive Layers

Semi-conductive tape over the conductor and inner and outer
Semi-conductive rubber layer on the insulation

Application

NTSCGECECWOU 8.7/15kV and 12/20kV cable is used for power supply in tunnel boring machines with reeling drum systems, as well as other demanding tunnel construction applications. It is suitable for both indoor and outdoor installations, offering flexibility and durability in harsh environments.

Technical Specifications

NTSCGECECWOU 8.7/15kV and 12/20kV Cable

NTSCGECECWOU Cable 8.7/15kV

NTSCGECECWOU Cable 12/20kV

No. Of Cores (PHASE+EARH + CONTROL+UL)	Nominal Cross Sectional Area mm²			CONDUCTOR DIAMETER	MINIMUM OVERALL DIAMETER	MAXIMUM OVERALL DIAMETER	MAXIMUM TENSILE LOAD	NOMINAL WEIGHT
No. Of Cores (PHASE+EARH + CONTROL+UL)	Phase N Conductor	Earth Conductor	Control Conductor	mm	mm	mm	N	kg/km
3+3+3+UL	25	25/3E	2.5ST	6.8	48	51.5	1125	3590
3+3+3+UL	35	25/3E	2.5ST	7.8	49.5	53.1	1575	3990
3+3+3+UL	50	25/3E	2.5ST	9.4	54.4	58.2	2250	4880
3+3+3+UL	70	35/3E	2.5ST	11.2	58.2	62.2	3150	5950
3+3+3+UL	95	50/3E	2.5ST	12.7	61.4	65.7	4275	7030
3+3+3+UL	120	70/3E	2.5ST	14.4	67.4	71.9	5400	8690

No. Of Cores (PHASE+EARH + CONTROL+UL)	Nominal Cross Sectional Area mm²			CONDUCTOR DIAMETER	MINIMUM OVERALL DIAMETER	MAXIMUM OVERALL DIAMETER	MAXIMUM TENSILE LOAD	NOMINAL WEIGHT
No. Of Cores (PHASE+EARH + CONTROL+UL)	Phase N Conductor	Earth Conductor	Control Conductor	mm	mm	mm	N	kg/km
3+3+3+UL	25	25/3E	2.5ST	6.8	50.5	54.1	1125	3860
3+3+3+UL	35	25/3E	2.5ST	7.8	52.3	56	1575	4260
3+3+3+UL	50	25/3E	2.5ST	9.4	57.5	61.4	2250	5190
3+3+3+UL	70	35/3E	2.5ST	11.2	61	65.3	3150	6280
3+3+3+UL	95	50/3E	2.5ST	12.7	66.4	70.9	4275	7640
3+3+3+UL	120	70/3E	2.5ST	14.4	70.5	75.2	5400	9050

Quality Control

NTSCGECECWOU 8.7/15kV and 12/20kV Cable

Raw Material Test

Raw Material Test for (N)TSCGECECWOU 8.7/15kV & 12/20kV Cable prioritizes high-voltage mining quality. Steps include: Certification Verification: Tinned copper, EPR, and rubber sheath meet VDE 0250/IEC standards. Conductor Testing: Tensile, elongation, conductivity, tin coating analysis. Insulation/Screen Evaluation: EPR dielectric/thermal properties; semi-conductive adhesion/resistivity. Sheath & Braid Checks: Abrasion/oil/flame resistance, braid coverage/strength. Control/Monitoring Validation: Conductor properties confirmed. Batch Rejection: Non-compliant quarantined. Approved materials ensure the (N)TSCGECECWOU 8.7/15kV & 12/20kV Cable's flexibility and MV reliability.

Process inspection

Process Inspection for (N)TSCGECECWOU 8.7/15kV & 12/20kV Cable enforces manufacturing precision. The procedure features: Stranding Control: Uniform tinned copper phases/control/monitoring. Extrusion Monitoring: Semi-conductive screens, EPR insulation with defect detection. Screening & Assembly: Precise braid and conductor integration. Real-Time Checks: Resistance, integrity, diameter monitoring. Optimization: Extrusion parameters adjusted. Correction: Immediate fixes. This guarantees the (N)TSCGECECWOU 8.7/15kV & 12/20kV Cable excels in MV electrical and mechanical performance.

Finished Product

Finished Product Test validates the (N)TSCGECECWOU 8.7/15kV & 12/20kV Cable for deployment. Steps include: Inspection: Visual/dimensional/marking verification. Electrical: Resistance, insulation, withstand (24–29kV), partial discharge. Mechanical: Bending, tensile, abrasion resistance. Performance: Oil/flame/thermal aging checks.= Validation: Voltage rating and short-circuit capability confirmed. Release: Only passing (N)TSCGECECWOU 8.7/15kV & 12/20kV Cable approved for dependable mining/tunneling MV use.

Application

The (N)TSCGECECWOU 8.7/15kV and 12/20kV Cable is perfect for underground/open-pit mining trailing/reeling systems, tunnel boring machines, heavy excavators, conveyor power feeds, mobile substations, and switchgear connections requiring flexible, screened, oil/abrasion-resistant MV cable with control/monitoring in high-mechanical-stress environments.

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Power & Energy Industry

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Real Estate & Construction

Infrastructure & Municipal Industry

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Mining and Oil & Gas Industry

Industrial Manufacturer

Technical Advantages

● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions

Conductor Stranded Work Shop

CCV Production Line

CCV production 01

Partical Voltage Test Labtoary

Auto-Winding Machine

Oil Chromatography Test Machine

Auto-core cutting machine

Basic Insulation Level Test Labtoary

Auto Laser Cutting Machine

Automatic Desanding Machine

Automatic Dryer Machine

Product Packaging

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FAQ From Customers

What are the advantages of power cables and overhead lines?

(1) Reliable operation, because it is installed in a hidden place such as underground, it is less damaged by external forces, has less chance of failure, and the power supply is safe, and it will not cause harm to people;
(2) The maintenance workload is small and frequent inspections are not required;
(3) No need to erect towers;
(4) Help improve power factor.

Which aspects should be considered when choosing the cross section of a power cable?

(1) The long-term allowable working current of the cable;
(2) Thermal stability once short circuited;
(3) The voltage drop on the line cannot exceed the allowable working range.

What are the measures for cable fire prevention?

(1) Use flame-retardant cables;
(2) Use fireproof cable tray;
(3) Use fireproof paint;
(4) Fire partition walls and fire baffles are installed at cable tunnels, mezzanine exits, etc.;
(5) Overhead cables should avoid oil pipelines and explosion-proof doors, otherwise local pipes or heat insulation and fire prevention measures should be taken.

What should be paid attention to during the transportation and handling of cables?

(1) During transportation, loading and unloading, cables and cable reels should not be damaged. It is strictly forbidden to push the cable reels directly from the vehicle. Generally, cables should not be transported and stored flat.
(2) Before transporting or rolling the cable reel, ensure that the cable reel is firm, the cable is wound tightly, the oil pipe between the oil-filled cable and the pressure oil tank should be fixed without damage, the pressure oil tank should be firm, and the pressure indication should meet the requirements.

What inspections should be carried out for the acceptance of cable lines?

(1) The cable specifications should meet the regulations, the arrangement should be neat, no damage, and the signs should be complete, correct and clear;
(2) The fixed bending radius of the cable, the related distance and the wiring of the metal sheath of the single-core power cable should meet the requirements;
(3) The cable terminal and the middle head should not leak oil, and the installation should be firm. The oil pressure of the oil-filled cable and the meter setting should meet the requirements;
(4) Good grounding;
(5) The color of the cable terminal is correct, and the metal parts such as the bracket are completely painted;
(6) There should be no debris in the cable trench, tunnel, and bridge, and the cover should be complete.

How many projects can cable engineering be divided into?

(1) Construction site transportation: including the loading and unloading, transportation and empty vehicle return journey of engineering materials from the warehouse to the construction site.
(2) Local engineering: including road excavation, tunnel, trench construction, etc.
(3) Laying engineering: including laying, intermediate head production, lift cover plate, buried pipe, school tide, tractor head production, etc.
(4) Two-end engineering: including the production and installation of support, suspension bridge and its foundation, the production of terminal heads, the installation of oil pressure and signal devices, and the electrical performance testing of various types.
(5) Stopping works: including the production of oil-filled cable stop heads, the installation of fuel supply tanks, automatic drainage and signal devices, etc.
(6) Grounding engineering: including installation of insulation joints, transposition boxes, protectors, and grounding boxes.

What tests and inspections should be carried out on power cables before laying?

Before laying, check whether the type, specification and length of the cable meet the requirements and whether there is external force damage. Low-voltage cables use a 1000V megohmmeter to remotely measure the insulation resistance, and the resistance is generally not less than 10MΩ. High-voltage cables use a 2500V megger to measure the resistance. Generally not less than 400MΩ.

What are the factors that determine the long-term allowable current carrying capacity of the cable?

(1) The long-term allowable working temperature of the cable;
(2) The heat dissipation performance of the cable itself;
(3) The condition of the cable installation and the heat dissipation conditions of the surrounding environment.

According to the difference of insulation and protective layer, what are the main types of commonly used low-voltage power cables?

(1) Oil-impregnated paper insulated lead-clad (or aluminum-clad) power cable;
(2) Non-drip oil-impregnated paper insulated power cable;
(3) PVC insulated and sheathed power cable;
(4) Cross-linked PVC insulated and PE sheathed power cable;
(5) Cross-linked PVC insulated and sheathed power cable;
(6) Rubber insulated power cables.

What are the requirements for the fire blocking of cable holes?

For larger cable penetration holes, such as the cable penetration floor, etc., when using fireproof blocking materials to block, according to the actual situation, first coat four to six layers of fireproof paint on the cable surface, the length is about 1.5m below the hole, and then use fire-resistant The material is processed into a board-supporting fire-proof blocking material with a certain strength to ensure that it is firm after being blocked and is easy to disassemble and assemble when the cable is replaced. The plugging is dense and non-porous to effectively block smoke and fire.

What are the main properties of the insulation material of the power cable?

(1) High breakdown strength;
(2) Low dielectric loss;
(3) Very high insulation resistance;
(4) Excellent discharge resistance;
(5) It has certain flexibility and mechanical strength;
(6) Long-term insulation performance is stable.

What are the regulations for cable protection tubes?

(1) When the cable needs to be laid through a protective pipe, the inner diameter of the pipe should not be less than 1.5 times the outer diameter of the cable, and the inner diameter of the concrete pipe, clay pipe, asbestos, and cement pipe should not be less than 100mm;
(2) The bending radius of the cable tube should meet the requirements of the bending radius of the cable inserted;
(3) Each pipe should not exceed three elbows at most, and there should be no more than two right-angle bends.

How to measure the outer diameter of the cable sheath?

At five evenly distributed points on the circumference of the sheath, measure the outer diameter of the sheath and its average value. The average outer diameter is the outer diameter of the sheath.

How to connect copper core cables with different cross-sections?

Copper core cables with different cross-sections can be connected by open-back weak copper pipes and connected by soldering, or pure copper rods can be connected into copper pipes according to different cross-sectional requirements and connected by crimping.

What are the insulating materials used to make cable terminal heads or intermediate joints?

There are insulating glue, insulating tape, insulating tube, insulating gloves, insulating resin, etc.

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NTSCGECECWOU 8.7/15kV and 12/20kV Cable

Construction

Phase Conductor

Insulation

Protective Earth Conductor

Control Conductor

Central Filler

Inner Sheath

Monitoring Conductor

Outer Sheath

Sheath Colour

Manufacturer Standard

Flame Retardant

Semi-Conductive Layers

Application

Technical Specifications

Quality Control

Raw Material Test

Process inspection

Finished Product

Application

Technical Advantages

Conductor Stranded Work Shop

CCV Production Line

CCV production 01

Partical Voltage Test Labtoary

Auto-Winding Machine

Oil Chromatography Test Machine

Auto-core cutting machine

Basic Insulation Level Test Labtoary

Auto Laser Cutting Machine

Automatic Desanding Machine

Automatic Dryer Machine

Product Packaging

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FAQ From Customers

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