Structure
Conductor: Solid or stranded copper/Aluminum
Insulation: Cross-linked polyethylene (XLPE) or Polyvinyl chloride (PVC)
Filler: Polypropylene filament with lapped binding tape
Binder: Binding tape
Inner sheath: Polyvinyl chloride (PVC)
Armouring: Single Core: AWA (Aluminium Wire Armour)
Multi Core: SWA (Steel Wire Armour) STA (Steel Tape Armour)
Sheath: Polyvinyl chloride (PVC)
Application
1,Long term working temperature for the cable with PVC insulated is 70ºC;
Long term working temperature for the cable with XLPE insulated is 90ºC
2,Short circuit temperature
For PVC insulated cable ,the highest conductor temperature is not more than160ºC.(lasting time not over 5 seconds).
For XLPE insulated cable ,the highest conductor temperature is not more than250ºC.(Lasting time is not over 5 seconds).
3,Laying temperature not less than 0ºC and the drop height is out of consideration.
4,The cable with chemical stability, anti- acid, anti-alkali, anti-oil, anti-organic solvent, not easy to be burning.
5,Easy for installation, easy bending and light.
Operating characteristics
- Rated power-frepuency voltage U0/U: 3.6/6kv~26/35kv.
- Max.admissible operating temperature of the conductor:90ºC.
- Max. short-circurt temperature of conductor shall not exceed 2500C. (5s maximum duration)
- The ambient temperature under installation should not below 00C.
- The bending radius of a single-core cable should not less than 20 times of the cable diameter.
The bending radius of a multi-core cable should not less than 15 times of the cable diameter.
Table of the voltage, cores and cross-section
| Item |
Category A ,B |
3.6/6kV |
6/10kV |
8.7/15kV |
12/20kV |
18/30kV |
21/35kV |
| Category A ,B |
6/6kV |
8.7/10kV |
12/15kV |
18/20kV |
- |
26/35kV |
| Single core |
mm2 |
25-1200 |
25-1200 |
35-1200 |
50-1200 |
50-1200 |
50-1200 |
| Three core |
mm2 |
25-400 |
25-400 |
35-400 |
50-400 |
50-400 |
50-400 |
The cable with Category A rated voltage is used in the situation requiring not over 1 min. of grounding fault lasting time. For the cable with Category B rated voltage, the grounding fault lasting time normally is not over 1 hour, max. lasting time is not over 8 hours, annual ground fault lasting time altogether should not be over 125 hours, Category C includes all the system expect Category A and B.
5 Type and Name
| Type |
Designation |
Applications |
| YJV |
Copper conductor,XLPE insulated,PVC sheathed power cable |
For laying indoors,in tunnel or cable trench,unable to bear external mechanical forces.Single core cable is not allowed to laid in magnetic duct. |
| YJLV |
Aluminum conductor,XLPE insulated,PVC sheathed power cable |
| YJY |
Copper conductor, XLPE insulated,PE sheathed power cable |
| YJLY |
Aluminum conductor, XLPE insulated,PE sheathed power cable |
| YJV22 |
Copper conductor,XLPE insulated,steel tape armoured,PVC sheathed power cable |
For laying indoors,in tunnel in cable trench,or direct in ground,able to bear external mechanical forces.Single core cable is not allowed to laid in magnetic duct. |
| YJLV22 |
Aluminum conductor,XLPE insulated,steel tape armoured,PVC sheathed power cable |
| YJV23 |
Copper conductor,XLPE insulated,steel tape armoured,PE sheathed power cable |
| YJLV23 |
Aluminum conductor,XLPE insulated,steel tape armoured,PE sheathed power cable |
| YJV32 |
Copper conductor,XLPE insulated,steel wire armoured,PVC sheathed power cable |
For laying indoors,in tunnel cable trench,well or direct in ground,able to bear external mechanical forces and certain pulling force. |
| YJLV32 |
Aluminum conductor,XLPE insulated,steel wire armoured,PVC sheathed power cable |
| YJV33 |
Copper conductor,XLPE insulated,steel wire armoured,PE sheathed power cable |
| YJLV33 |
Aluminum conductor,XLPE insulated,steel wire armoured,PE sheathed power cable |
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