It is used to transmit and distribute power of A.C rated voltage 0.6/1 kV or lower for power system. It has not only better performance of PVC insulation power cable, but also advantages of softness and flexibility as well
Executive standard: YD/T1173-2001
Type and description:
Type |
Description
|
|
RV
|
Soft power cable with Cu core, PVC insulation
|
|
RVZ
|
Soft power cable with Cu core, PVC insulation, flame resistant
|
|
RVV
|
Soft power cable with Cu core, PVC insulation and sheath
|
|
RVVZ
|
Soft power cable with Cu core, PVC insulation & sheath, flame resistant
|
|
RVV22
|
Soft power cable with Cu core, PVC insulation & sheath, steel tape armor
|
|
RVVZ22
|
Soft power cable with Cu core, PVC insulation & sheath, steel tape armor, flame resistant.
|
Production Condition
- Max. temperature of cable conductor for Long-term working is 70℃
- Min. environment temperature for installing cable is 0℃
- Bending radium allowed by cable:
It will be no less than 8 times that of cable O.D for inarmored cable and 20 times that of cable O.D for armored cable
- Max. working temperature of cable conductor is 160℃ during short circuit (the longest lasting time shall be no more than 5 seconds).
Main technical parameter
- Max. DC resistance value of conductor at 20℃ shall meet the requirements of the following table:
|
Nominal cross section area
|
1.5
|
2.5
|
4
|
6
|
10
|
16
|
25
|
35
|
50
|
|
Max. DC resistance of conductor at 20℃
|
13.3
|
7.98
|
4.91
|
3.30
|
1.91
|
1.21
|
0.780
|
0.554
|
0.389
|
|
Nominal cross section area
|
70
|
95
|
120
|
150
|
185
|
240
|
300
|
400
|
|
|
Max. DC resistance of conductor at 20℃
|
0.272
|
0.206
|
0.161
|
0.129
|
0.106
|
0.0801
|
0.0641
|
0.0495
|
|
- Min. insulation resistance at 70℃
|
Nominal cross section area (mm2)
|
Min. insulation resistance at 70℃
|
Nominal cross section area
|
Min. insulation resistance at 70℃
|
|
1.5
|
0.01.
|
70
|
0.0032
|
|
2.5
|
0.009
|
95
|
0.0032
|
|
4
|
0.007
|
120
|
0.0029
|
|
6
|
0.006
|
150
|
0.0029
|
|
10
|
0.0056
|
185
|
0.0029
|
|
16
|
0.0046
|
240
|
0.0028
|
|
25
|
0.0044
|
300
|
0.0028
|
|
35
|
0.0036
|
400
|
0.0026
|
|
50
|
0.0037
|
/
|
/
|
|
Testing condition:
- Testing length: 5m
- Time for immersion in the water is one hour
- temperature of water is 70℃
|
- A.C. voltage test under power frequency
The finished cable shall bear A.C. voltage test of 50Hz listed in the following table without puncture
Core No. |
Testing method
|
Sample length
|
Voltage
|
Lasting time
|
|
Rated voltage
|
Testing voltage
|
5min
|
|
Single core
|
Immersing in the water for 1th
|
Manufacturing length
|
450/750
|
2500
|
|
Multi-core and armoring
|
interphase
|
600/1000
|
3500
|
