Rail Transit Cable
Dedicated DC Special Cable For Rail Transit
1. General Description
The special rail transit cable are suitable for power transmission and distribution in the line. It can be laid indoors, outdoors, in tunnels, cable trenches, pipelines, flammable and severely corrosive environments. The cable can withstand strong mechanical external forces, and has low smoke, zero halogen, ant, rodent, waterproof, sun resistant, UV resistant, and low temperature resistance properties.
2. Cable Characteristics
1. Rated Voltage Uo: 1500V
Note: – Uo is the rated power frequency voltage between the conductor to ground or metal shield used in cable design
2. Voltage test
– DC voltage test: 6.5kV/5min
– Power frequency AC voltage test: 2.7kV/5min
3. Maximum conductor temperature of the cable
– Normal operation: 90 ℃
– Under short-circuit conditions (maximum duration of 5 seconds): 250 ℃
4. Minimum allowable bending radius of cables:
Noted:D is cable outer diameter
| ITEM | Single Core Class1 AND Class2 Conductor Cable | Single Core Class5 and Class6 Conductor Cable |
| Minimum bending radius of the cable during installation | 20D(Crosslinked polyethylene insulated thermoplastic sheathed cable) | 6D(EPR or HEPR) Insulated thermosetting sheathed cable |
3. Models and Specifications:
GJ-DC-WDZA-YJY-1500V
WDZA-EY-1500V
GJ-DC-WDZA-EYR-1500V
4.Construction
4. Properties
1. The rated voltage U0/U of the cable is 0.6/1KV
2. The long-term allowable working temperature of the cable is 0 ℃, and the minimum outdoor ambient temperature is -35 ℃, which has characteristics of ozone resistance, ultraviolet radiation, and moisture resistance.
3. The cable has oil resistance characteristics.
4. The cable should withstand 3.5KV/5min.
5. Standard
TGB/T12706.1-2020 Power cables with extruded insulation and accessories for rated voltages from 1kV (Um=1.2kV) to 35kV (Um=40.5kV) – Part 1: Cables with rated voltages of 1kV (Um=1.2kV) and 3kV (Um=3.6kV)
GB/T28429-2012 Rail Transit 1500V and Below DC Traction Power Cables and Accessories
6. Rail Transit Cable Specification
| Nominal cross section area of conductor (mm2) | Condutor Outer Sheath (mm) | Insulation thickness (mm) | Outer Sheath Thickness (mm) | Cable Outer Diameter (mm) | Cable Weight (kg/km) | |||||
| Material | Class2 | Class5 | XLPE | EPR | XLPE | EPR | XLPE | EPR | XLPE | EPR |
| 10 | 4.1 | 4.6 | 2 | 2.4 | 1.5 | 1.5 | 16.62 | 17.47 | 434.7 | 472.1 |
| 16 | 5.1 | 5.6 | 2 | 2.4 | 1.5 | 1.5 | 17.69 | 18.54 | 525.76 | 565.55 |
| 25 | 6.4 | 7 | 2 | 2.4 | 1.6 | 1.6 | 19.08 | 19.93 | 655.39 | 698.29 |
| 35 | 7.1 | 8.6 | 2 | 2.4 | 1.6 | 1.6 | 19.83 | 20.68 | 771.29 | 815.86 |
| 50 | 8.2 | 11 | 2 | 2.4 | 1.6 | 1.6 | 21 | 21.86 | 947.46 | 994.66 |
| 70 | 10 | 11.8 | 2 | 2.4 | 1.7 | 1.7 | 22.93 | 23.79 | 1196.36 | 1247.85 |
| 95 | 11.6 | 13.8 | 2 | 2.4 | 1.7 | 1.8 | 24.64 | 25.5 | 1482.88 | 1538.2 |
| 120 | 12.9 | 15.5 | 2 | 2.4 | 1.8 | 1.8 | 26.03 | 26.89 | 1758.1 | 1816.52 |
| 150 | 14.5 | 17.6 | 2 | 2.4 | 1.8 | 1.9 | 27.74 | 28.6 | 2090.91 | 2153.15 |
| 185 | 16.2 | 18.8 | 2 | 2.4 | 1.9 | 1.9 | 29.56 | 30.42 | 2473.41 | 2539.71 |
| 240 | 18.6 | 21.8 | 2 | 2.4 | 2 | 2 | 32.13 | 32.99 | 3065.03 | 3137.07 |
| 300 | 20.5 | 24.9 | 2 | 2.4 | 2.1 | 2.1 | 34.16 | 35.02 | 3681.33 | 3757.91 |
| 400 | 23.8 | 28.4 | 2 | 2.6 | 2.2 | 2.2 | 37.7 | 38.98 | 4717.7 | 4845.11 |
| 500 | 26.4 | / | 2.2 | 2.8 | 2.3 | 2.3 | 40.91 | 42.19 | 5770.94 | 5909.1 |
| 630 | 30 | / | 2.4 | 2.8 | 2.4 | 2.4 | 45.19 | 46.04 | 7150.2 | 7251.38 |
7. Cable Delivery Requirements
1. The delivery length of the cable shall not be less than 100m, and the allowable length shall not be less than 20m.
2. The delivery quantity of short section cables should not exceed 10% of the total delivery length.
3. The error in length measurement shall not exceed ± 0.5%.
8. Packing and Shipping
1. Packaging: The cables are neatly wound on the cable delivery reel, with the cable ends tightly wrapped. The cable ends protruding from the reel are protected by nails, with a length of no less than 300mm and a weight of no more than 80kg. Short section cables are packaged in rolls. There is a product description label attached to the cable reel and the correct direction of rotation is indicated on the cable reel.
2. Transportation and Storage
a) Cables cannot be stored in the open air, and cable trays are not allowed to be laid flat.
b) It is strictly prohibited to drop cable trays containing cables from high places during transportation, and mechanical damage to cables is strictly prohibited.
c) When lifting packaging, it is strictly prohibited to lift multiple trays simultaneously. On vehicles, ships, and other means of transportation, cables must be securely placed and secured using appropriate methods to prevent collision or overturning.
