Factory Price Copper Conductor Electric Wires Cables Three Cores PVC Sheathed Electric Power Cable Manufacturer

Factory Price Copper Conductor Electric Wires Cables Three Cores PVC Sheathed Electric Power Cable Manufacturer image
Get Latest Price Request a quote
You May Like
Product Details
Packaging & Delivery
Product Description
Scope of application
System
The product is suitable for fixed laying in the distribution networkor industrial installationswith AC 50Hz and rated voltage 3.6/6kV,6/6/6kV,6/10kV,8.7/10kV,8.7/15kV ,12/20kV,18/30kV,21/35kV 26/35kV.
Occasion
Fixed in the underground power grid of urban building communities, the leading lines of power generation and substations (all), and the use of power supply and distribution. For example, it can be used in power distribution and other places within industrial and mining enterprises.
Product characteristics
It has the characteristics of high normal operating temperature of conductor, simple structure, easy to use and not limited by laying drop.
Standards Compliant
Implementation Standards
GB/T 12706-2020 Rated voltage 1kV (Um=1.2kV) to 35kV (Um=40.5kV) extruded insulated power cables and accessories.
Additional standard
Usage features
Rated voltage
The rated voltage is 3.6/6kV, and the maximum voltage of the AC system should not exceed 7.2kV.
The rated voltage is 6/6kV, and the maximum voltage of the AC system should not exceed 7.2kV.
The rated voltage is 6/10kV, and the maximum voltage of the AC system should not exceed 12kV.
The rated voltage is 8.7/10kV, and the maximum voltage of the AC system should not exceed 12kV.
The rated voltage is 8.7/150kV, and the maximum voltage of the AC system should not exceed 17.5kV.
The rated voltage is 12/20kV, and the maximum voltage of the AC system should not exceed 24kV.
The rated voltage is 18/30kV, and the maximum voltage of the AC system should not exceed 36kV.
The rated voltage is 21/35kV, and the maximum voltage of the AC system should not exceed 40.5kV.
The rated voltage is 26/35kV, and the maximum voltage of the AC system should not exceed 40.5kV.
Operating temperature
The maximum allowable long-term working temperature of the cable conductor is 90°C; when short-circuited, the maximum temperature of the cable conductor does not exceed 250°C, continuously The time does not exceed 5s.
Ambient Temperature
Minimum working environment temperature -10ºC.
Laying Temperature
The laying temperature of cables should not be lower than 0ºC.
Bending Radius
The minimum bending radius of single-core cable without armour is recommended to be 20D. The minimum bending radius of single-core cable with armour is recommended to be 15D. The minimum bending radius of three-core cable without armour is recommended to be 15D. The minimum bending radius of three-core cable with armour is recommended to be 12D.
Note: D is the outer diameter of the cable.
Product Identification
Core
Color code
1 core: omitted
3 cores: red, yellow, green (add color ribbon)
Sheath
The outer sheath of the cable is usually black, but other colors can also be used in accordance with the manufacturer or buyer’s agreement to adapt to its use environment. The cable should have a continuous identification of the manufacturer’s name, product model, rated voltage, and the manufacturer’s name identification can be a repeated identification of the manufacturer or trademark. The distance between the end of a complete logo and the beginning of the next logo should not exceed 500mm on the outer sheath of the cable; it should not exceed 200mm on the cable insulation or tape; the printed logo should be scratch-resistant and not fall off, and the printing on the surface Content should be clear and legible.
Note: The mark on the surface of the sheath can also add other content according to the custom of the user or the manufacturer.
Delivery and Tolerance
Delivery Length
Cables weighing less than 80kg are allowed to be delivered in coils. If there is no agreement, the delivery length is allowed to be no less than 100 meters. Short sections of cables with a length of not less than 20 meters are allowed to be delivered, and their quantity does not exceed 10% of the total length of delivery, or cables of any length can be delivered according to mutual agreement.
Length Error
The measurement error of delivery length is ±0.5%.
Rated Voltage | No.OF CORES | CORSS SECTIONAL AREA(MM2) | CONDUCTOR | CORE DIAMETER(MM) | CONDUCTOR SCREEN THICKNESS(MM) | INSULATION THICKNESS(MM) | NON-METAL SCREEN SIZE(MM) | METAL SCREEN SIZE(MM) | BELT(MM) | JACKET THICKNESS(MM) | OVERALL DIAMATER(MM) | WEIGHT(KG/KM) | DC RESISTANCE (OHM/KM) |
3.6/6KV | 3 | 25 | 7/2.18 | 6 | 0.8 | 2.5 | 0.7 | 30×0.10 | 60×0.20 | 2.1 | 35.6 | 1674.8 | 0.727 |
3 | 35 | 7/2.58 | 7 | 0.8 | 2.5 | 0.7 | 30×0.10 | 60×0.20 | 2.1 | 37.8 | 2030.8 | 0.524 | |
3 | 50 | 10/2.58 | 8.4 | 0.8 | 2.5 | 0.7 | 30×0.10 | 60×0.20 | 2.2 | 41 | 2549.10 | 0.387 | |
3 | 70 | 19/2.18 | 10 | 0.8 | 2.5 | 0.7 | 30×0.10 | 60×0.20 | 2.4 | 44.8 | 3260.6 | 0.268 | |
3 | 95 | 19/2.58 | 11.6 | 0.8 | 2.5 | 0.7 | 40×0.10 | 60×0.20 | 2.5 | 48.5 | 4141 | 0.193 | |
3 | 120 | 24/2.58 | 13 | 0.8 | 2.5 | 0.7 | 40×0.10 | 60×0.20 | 2.6 | 51.7 | 4968.7 | 0.153 | |
3 | 150 | 30/2.58 | 14.6 | 0.8 | 2.5 | 0.7 | 40×0.10 | 60×0.20 | 2.7 | 55.3 | 5955.5 | 0.124 | |
3 | 185 | 37/2.58 | 16.2 | 0.8 | 2.5 | 0.7 | 40×0.10 | 60×0.20 | 2.8 | 59 | 7081.9 | 0.0991 | |
3 | 240 | 48/2.58 | 18.5 | 0.8 | 2.6 | 0.7 | 40×0.10 | 60×0.20 | 3 | 64.8 | 8892.8 | 0.0754 | |
3 | 300 | 60/2.58 | 20.6 | 0.8 | 2.8 | 0.7 | 40×0.10 | 60×0.20 | 3.2 | 70.5 | 10875.2 | 0.0601 | |
3 | 400 | 61/2.94 | 23.8 | 0.8 | 3 | 0.7 | 40×0.10 | 60×0.20 | 3.4 | 78.7 | 13928.6 | 0.047 | |
6/6KV | 3 | 25 | 7/2.18 | 6 | 0.8 | 3.4 | 0.7 | 30×0.10 | 60×0.20 | 2.2 | 39.7 | 1913.5 | 0.727 |
3 | 35 | 7/2.58 | 7 | 0.8 | 3.4 | 0.7 | 30×0.10 | 60×0.20 | 2.3 | 42 | 2299.2 | 0.524 | |
3 | 50 | 10/2.58 | 8.4 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.4 | 45.2 | 2837.2 | 0.387 | |
3 | 70 | 19/2.18 | 10 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.5 | 48.9 | 3551.8 | 0.268 | |
3 | 95 | 19/2.58 | 11.6 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.6 | 52.5 | 4451.6 | 0.19 | |
3 | 120 | 24/2.58 | 13 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.7 | 55.8 | 5298.8 | 0.153 | |
3 | 150 | 30/2.58 | 14.6 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.8 | 59.4 | 6306.2 | 0.124 | |
3 | 185 | 37/2.58 | 16.2 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.9 | 63.1 | 7453.3 | 0.0991 | |
3 | 240 | 48/2.58 | 18.5 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 3.1 | 68.4 | 9253.6 | 0.0754 | |
3 | 300 | 60/2.58 | 20.6 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 3.3 | 73.3 | 11175.4 | 0.0601 | |
3 | 400 | 61/2.94 | 23.8 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 3.5 | 80.6 | 14160.5 | 0.047 | |
6/10KV | 3 | 25 | 7/2.18 | 6 | 0.8 | 3.4 | 0.7 | 30×0.10 | 60×0.20 | 2.2 | 39.7 | 1913.5 | 0.727 |
3 | 35 | 7/2.58 | 7 | 0.8 | 3.4 | 0.7 | 30×0.10 | 60×0.20 | 2.3 | 42 | 2299.2 | 0.524 | |
3 | 50 | 10/2.58 | 8.4 | 0.8 | 3.4 | 0.7 | 30×0.10 | 60×0.20 | 2.4 | 45.2 | 2837.2 | 0.387 | |
3 | 70 | 19/2.18 | 10 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.5 | 48.9 | 3551.8 | 0.27 | |
3 | 95 | 19/2.58 | 11.6 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.6 | 52.5 | 4451.6 | 0.193 | |
3 | 120 | 24/2.58 | 13 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.7 | 55.8 | 5298.8 | 0.153 | |
3 | 150 | 30/2.58 | 14.6 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.8 | 59.4 | 6306.2 | 0.124 | |
3 | 185 | 37/2.58 | 16.2 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 2.9 | 63.1 | 7453.3 | 0.0991 | |
3 | 240 | 48/2.58 | 18.5 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 3.1 | 68.4 | 9253.6 | 0.0754 | |
3 | 300 | 60/2.58 | 20.6 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 3.3 | 73.3 | 11175.4 | 0.0601 | |
3 | 400 | 61/2.94 | 23.8 | 0.8 | 3.4 | 0.7 | 40×0.10 | 60×0.20 | 3.5 | 80.6 | 14160.5 | 0.047 | |
8.7/10KV | 3 | 25 | 7/2.18 | 6 | 0.8 | 4.5 | 0.7 | 30×0.10 | 60×0.20 | 2.4 | 44.8 | 2251.6 | 0.727 |
3 | 35 | 7/2.58 | 7 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.5 | 47.2 | 2655.9 | 0.524 | |
3 | 50 | 10/2.58 | 8.4 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.6 | 50.4 | 3217.3 | 0.387 | |
3 | 70 | 19/2.18 | 10 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.7 | 54 | 3957.2 | 0.27 | |
3 | 95 | 19/2.58 | 11.6 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.8 | 57.7 | 4884.7 | 0.193 | |
3 | 120 | 24/2.58 | 13 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.9 | 60.9 | 5754.2 | 0.153 | |
3 | 150 | 30/2.58 | 14.6 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3 | 64.5 | 6788 | 0.124 | |
3 | 185 | 37/2.58 | 16.2 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3.1 | 68.2 | 7961.6 | 0.0991 | |
3 | 240 | 48/2.58 | 18.5 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3.3 | 73.5 | 9801.3 | 0.0754 | |
3 | 300 | 60/2.58 | 20.6 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3.4 | 78.3 | 11725.3 | 0.0601 | |
3 | 400 | 61/2.94 | 23.8 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3.7 | 85.8 | 14799.2 | 0.047 | |
8.7/15KV | 3 | 25 | 7/2.18 | 6 | 0.8 | 4.5 | 0.7 | 30×0.10 | 60×0.20 | 2.4 | 44.8 | 2251.6 | 0.727 |
3 | 35 | 7/2.58 | 7 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.5 | 47.2 | 2655.9 | 0.524 | |
3 | 50 | 10/2.58 | 8.4 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.6 | 50.4 | 3217.3 | 0.387 | |
3 | 70 | 19/2.18 | 10 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.7 | 54 | 3957.2 | 0.27 | |
3 | 95 | 19/2.58 | 11.6 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.8 | 57.7 | 4884.7 | 0.193 | |
3 | 120 | 24/2.58 | 13 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 2.9 | 60.9 | 5754.2 | 0.153 | |
3 | 150 | 30/2.58 | 14.6 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3 | 64.5 | 6788 | 0.124 | |
3 | 185 | 37/2.58 | 16.2 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3.1 | 68.2 | 7961.6 | 0.0991 | |
3 | 240 | 48/2.58 | 18.5 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3.3 | 73.5 | 9801.3 | 0.0754 | |
3 | 300 | 60/2.58 | 20.6 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3.4 | 78.3 | 11725.3 | 0.0601 | |
3 | 400 | 61/2.94 | 23.8 | 0.8 | 4.5 | 0.7 | 40×0.10 | 60×0.20 | 3.7 | 85.8 | 14799.2 | 0.047 | |
12/20KV | 3 | 35 | 7/2.58 | 7 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 2.6 | 51.7 | 2992.9 | 0.524 |
3 | 50 | 10/2.58 | 8.4 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 2.7 | 54.9 | 3574.5 | 0.387 | |
3 | 70 | 19/2.18 | 10 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 2.8 | 58.5 | 4337.1 | 0.268 | |
3 | 95 | 19/2.58 | 11.6 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 2.9 | 62.2 | 5287.4 | 0.19 | |
3 | 120 | 24/2.58 | 13 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 3 | 65.4 | 6177 | 0.15 | |
3 | 150 | 30/2.58 | 14.6 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 3.1 | 69.1 | 7235 | 0.12 | |
3 | 185 | 37/2.58 | 16.2 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 3.3 | 72.9 | 8463 | 0.10 | |
3 | 240 | 48/2.58 | 18.5 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 3.4 | 78.1 | 10304.9 | 0.08 | |
3 | 300 | 60/2.58 | 20.6 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 3.6 | 83 | 12294.3 | 0.0601 | |
3 | 400 | 61/2.94 | 23.8 | 0.8 | 5.5 | 0.7 | 40×0.10 | 60×0.20 | 3.8 | 90.3 | 15377.9 | 0.047 | |
18/30KV | 3 | 50 | 10/2.58 | 8.4 | 0.8 | 8 | 0.7 | 40×0.10 | 60×0.20 | 3.1 | 66.5 | 4635.5 | 0.387 |
3 | 70 | 19/2.18 | 10 | 0.8 | 8 | 0.7 | 40×0.10 | 60×0.20 | 3.2 | 70.1 | 5457.3 | 0.268 | |
3 | 95 | 19/2.58 | 11.6 | 0.8 | 8 | 0.7 | 40×0.10 | 60×0.20 | 3.3 | 73.8 | 6467.1 | 0.193 | |
3 | 120 | 24/2.58 | 13 | 0.8 | 8 | 0.7 | 40×0.10 | 60×0.20 | 3.4 | 77 | 7409.2 | 0.153 | |
3 | 150 | 30/2.58 | 14.6 | 0.8 | 8 | 0.7 | 40×0.10 | 60×0.20 | 3.5 | 80.6 | 8525 | 0.124 | |
3 | 185 | 37/2.58 | 16.2 | 0.8 | 8 | 0.7 | 40×0.10 | 60×0.20 | 3.6 | 84.3 | 9780.7 | 0.0991 | |
3 | 240 | 48/2.58 | 18.5 | 0.8 | 8 | 0.7 | 40×0.10 | 60×0.20 | 3.8 | 89.6 | 11742.3 | 0.0754 | |
3 | 300 | 60/2.58 | 20.6 | 0.8 | 8 | 0.7 | 40×0.10 | 60×0.20 | 3.9 | 94.3 | 13770.1 | 0.0601 | |
3 | 400 | 61/2.94 | 23.8 | 0.8 | 8 | 0.7 | 40×0.10 | 60×0.20 | 4.2 | 101.8 | 17015.2 | 0.047 | |
21/35KV | 3 | 50 | 10/2.58 | 8.4 | 0.8 | 9.3 | 0.7 | 40×0.10 | 60×0.20 | 3.3 | 72.5 | 5259.5 | 0.387 |
3 | 70 | 19/2.18 | 10 | 0.8 | 9.3 | 0.7 | 40×0.10 | 60×0.20 | 3.4 | 76.1 | 6112 | 0.268 | |
3 | 95 | 19/2.58 | 11.6 | 0.8 | 9.3 | 0.7 | 40×0.10 | 60×0.20 | 3.5 | 79.8 | 7152.4 | 0.193 | |
3 | 120 | 24/2.58 | 13 | 0.8 | 9.3 | 0.7 | 40×0.10 | 60×0.20 | 3.6 | 83 | 8121.8 | 0.153 | |
3 | 150 | 30/2.58 | 14.6 | 0.8 | 9.3 | 0.7 | 40×0.10 | 60×0.20 | 3.7 | 86.6 | 9268.2 | 0.124 | |
3 | 185 | 37/2.58 | 16.2 | 0.8 | 9.3 | 0.7 | 40×0.10 | 60×0.20 | 3.8 | 90.3 | 10554.7 | 0.0991 | |
3 | 240 | 48/2.58 | 18.5 | 0.8 | 9.3 | 0.7 | 40×0.10 | 60×0.20 | 4 | 95.6 | 12561.9 | 0.0754 | |
3 | 300 | 60/2.58 | 20.6 | 0.8 | 9.3 | 0.7 | 40×0.10 | 60×0.20 | 4.1 | 100.3 | 14629.1 | 0.0601 | |
3 | 400 | 61/2.94 | 23.8 | 0.8 | 9.3 | 0.7 | 40×0.10 | 60×0.20 | 4.4 | 107.8 | 17938.4 | 0.047 | |
26/35KV | 3 | 50 | 10/2.58 | 8.4 | 0.8 | 10.5 | 0.7 | 40×0.10 | 60×0.20 | 3.5 | 78 | 5885 | 0.387 |
3 | 70 | 19/2.18 | 10 | 0.8 | 10.5 | 0.7 | 40×0.10 | 60×0.20 | 3.6 | 81.7 | 6767.6 | 0.268 | |
3 | 95 | 19/2.58 | 11.6 | 0.8 | 10.5 | 0.7 | 40×0.10 | 60×0.20 | 3.7 | 85.3 | 7835.1 | 0.193 | |
3 | 120 | 24/2.58 | 13 | 0.8 | 10.5 | 0.7 | 40×0.10 | 60×0.20 | 3.8 | 88.5 | 8829.7 | 0.153 | |
3 | 150 | 30/2.58 | 14.6 | 0.8 | 10.5 | 0.7 | 40×0.10 | 60×0.20 | 3.9 | 92.2 | 10006.5 | 0.124 | |
3 | 185 | 37/2.58 | 16.2 | 0.8 | 10.5 | 0.7 | 40×0.10 | 60×0.20 | 4 | 95.8 | 11319.8 | 0.0991 | |
3 | 240 | 48/2.58 | 18.5 | 0.8 | 10.5 | 0.7 | 40×0.10 | 60×0.20 | 4.2 | 101.2 | 13371.4 | 0.0754 | |
3 | 300 | 60/2.58 | 20.6 | 0.8 | 10.5 | 0.7 | 40×0.10 | 60×0.20 | 4.3 | 105.9 | 15475.3 | 0.0601 | |
3 | 400 | 61/2.94 | 23.8 | 0.8 | 10.5 | 0.7 | 40×0.10 | 60×0.20 | 4.6 | 113.4 | 18844.4 | 0.047 |
We are China Factory Price Copper Conductor Electric Wires Cables Three Cores PVC Sheathed Electric Power Cable Manufacturer manufacture and supplier,You can get more details with Email,you will get cheap price or factory price.
Get Latest Price Request a quote
Popular Henan Guowang Cable Group Co. Products
Aluminum 18/30kv Na2xsh Mv Cable with Copper Wires and Tape Screen 1X400/35mm2
Hot Sale PVC Guowang Copper Electric Wire Power Cable with CCC Yjv
Lt Fire Retardant Low Smoke Frls Fr Ayy/Yy/A2xy/2xy XLPE Power Cable Prices
XLPE Insulated Multi Cores Cu/PVC/Sta/Swa XLPE/PVC Conductor Copper Cable
18/30 (36) Kv 240sqmm 300sqmm 50mm2 Single Core N2xsh Cable with High Quality
Popular Ltd. Products
XLPE Guowang Drum/According to Your Need Copper 400mm2 PVC Cable with ISO
Coaxial Cable Rg59 Communication Cable CCTV Monitoring
Audiophile Audio 8n Round Core Copper Main Speaker Cable Speaker Bulk Cable
PVC Insulated Flexible 450/750V Wire
General Purpose Rubber Sheathed Flexible Cable
7/2.5mm Bare Conductor AAAC All Aluminium Overhead Conductor Supplier Price
Popular Medium Voltage Products
Single Core XLPE Insulated Copper Tape Screen Unarmored Cable with Copper Conductor
6/10kv Single Core Copper Conductor XLPE Insulation PE Sheath Fire Resisitant Power Cable
Medium Voltage XLPE Insulation Aluminum Tape Screen ABC Cable
High Quality Construction Industrial XLPE Insulation PE Sheath Cu Wire Cable Zr-Yjy
Medium Voltage Power Cable 11kv Three Core Swa Armoured with Copper Core
Popular Three Core Products
Three Core 18/30kv Medium Voltage Unarmored Cable
High Quality Construction Industrial Steel Wire Armoured PVC Sheath Cable Yjv22 Yjv32 N2xsy N2xs2y
Three Core 21/35kv Medium Voltage Unarmored Cable
PE/XLPE Insulated Three Core Overhead Cable Aluminium Conductor
Three Core 6/10kv Medium Voltage Unarmored Cable
Electric Cable Three Core Aluminium Aerial Bundle ABC Cable
Tags: Henan Guowang Cable Group Co., Ltd., Medium Voltage, Three Core