It is used for supervising and controlling return circuit of A.C. rated voltage of 450/750V or lower, power connection of various mobile electrical equipments, radio devices, and lighting & protection under low temperature.
Executive standard: enterprise standard and JB1170-75 standard
Working condition
Long-term working temperature of wire conductor is no more than 180℃ for cable with silicon insulation, 70℃ for that with PVC insulation
Min. environment temperature of wire is -40℃
Bending radius allowed by wire is no less than 8 times that of cable O.D OR 6 times for cable with soft structure.
Type and Description
Type
Cable description
Note
YVFR
Soft power cable with Cu core, butadiene PVC insulation and sheath
If thin-plated copper wire braided shielding is needed, the letter “P” in the original type of cable shall be changed into the letter “P1”.
If thinned copper wire conductor is used, the relevant description shall be made in the order, but it is not necessary to give other description in cable type
YVFB
Flat type soft power cable with Cu core, butadiene PVC insulation and sheath
YGVFB
Flat type soft power cable with Cu core, silicon rubber insulation and butadiene PVC sheath
KVFR
Soft control cable with Cu core, butadiene PVC insulation and sheath
KVFRP
Soft control cable with Cu core, butadiene PVC insulation and sheath, copper wire braided shielding
KVFB
Flat type soft control cable with Cu core, butadiene PVC insulation and sheath
KGVFB
Flat type soft control cable with Cu core, silicon rubber insulation and butadiene PVC sheath
Main Technical Parameter
Max. DC resistance of conductor at 20℃ shall meet the requirement of the following table
Nominal cross section area (mm2)
Conductor structure
Pieces/diameter (mm)
Conductor DC resistance at 20℃≤Ω/km
Not tinned
tinned
0.5
16/0.20
39.0
40.1
0.75
24/0.20
26.0
26.7
1.0
32/0.20
19.5
20.0
1.5
30/0.25
13.3
13.7
2.5
49/0.26
7.98
8.21
4
56/0.30
4.95
5.09
6
84/0.30
3.30
3.39
10
84/0.40
1.91
1.95
16
110/0.43
1.21
1.24
25
170/0.43
0.78
0.795
35
240/0.43
0.554
0.565
50
342/0.43
0.386
0.393
70
482/0.43
0.272
0.277
95
654/0.43
0.206
0.210
120
827/0.43
0.161
0.164
150
1033/0.43
0.129
0.132
185
1274/0.43
0.106
0.108
Finished control cable shall bear A.C. test voltage of 3000V under power frequency for 5 min without puncture of insulation
Finished power cable shall bear A.C. test voltage of 3500V under power frequency for without puncture of insulation
OVERHEAD LINE CONDUCTORS
