pre-fabricated branch plastic insulation cable with a rated voltage of 0.6/1KV
I. Product standard: Enterprise standard
II. Purpose: The product is applicable to 0.6/KV and below power distribution for medium and high-storey residence.
III. Utilization features:
Long-term allowable work temperature of cables
Maximum rated temperature 90 °C of cross-linked polyethylene insulation conductor
Maximum rated temperature 70 °C of cross-linked polyethylene insulation conductor
IV. Please see Table 1 for the branch cable model.
序号 |
Cable name |
Model |
Single core |
3-core twisting type |
4-core twisting type |
5-core twisting type |
1 |
Branch cable of PVC insulation sleeve |
FZ-V V |
FZ-V V-3 |
FZ-V V-4 |
FZ-V V-5 |
2 |
Combustion resistant branch cable of PVC insulation sleeve |
FZ-ZRV V |
FZ-ZRV V-3 |
FZ-ZRV V-4 |
FZ-ZRV V-5 |
3 |
Refractory branch cable of PVC insulation sleeve |
FZ-NHV V |
FZ-NHV V-3 |
FZ-NHV V-4 |
FZ-NHV V-5 |
4 |
Branch cable of cross-linked
polyethylene insulation PVC sleeve |
FZ-YJV |
FZ-YJV-3 |
FZ-YJV |
FZ-YJV |
5 |
Combustion resistant branch cable of
cross-linked polyethylene insulation PVC sleeve |
FZ-ZRYJV |
FZ-ZRYJV-3 |
FZ-ZRYJV-4 |
FZ-ZRYJV-5 |
6 |
Refractory branch cable of cross-linked polyethylene insulation PVC sleeve |
FZ-NHYJV |
FZ-NHYJV-3 |
FZ-NHYJV-4 |
FZ-NHYJV-5 |
Remark: Section area of main line cable shall be 10-800mm2 while section area of branch cable shall be 6-400mm2.
V. Please see the following table for technological parameters
Nominal section
mm2 |
External diameter of tight
conductive wire core
mm |
Insulation thickness
mm |
Sleeve thickness
mm |
AC test
kv/5min
|
DC resistance
of 20 maximum conductor
Ω/km
|
6 |
3.1 |
0.8 |
1.4 |
3.5 |
3.08 |
10 |
3.8 |
1.0 |
1.4 |
1.83 |
16 |
4.8 |
1.0 |
1.4 |
1.15 |
25 |
6.0 |
1.2 |
1.4 |
0.727 |
35 |
7.0 |
1.2 |
1.4 |
0.524 |
50 |
8.4 |
1.4 |
1.4 |
0.387 |
70 |
10.0 |
1.4 |
1.4 |
0.268 |
95 |
11.6 |
1.6 |
1.5 |
0.193 |
120 |
13.0 |
1.6 |
1.6 |
0.153 |
150 |
14.6 |
1.8 |
1.8 |
0.124 |
185 |
16.2 |
2.0 |
2.0 |
0.0991 |
240 |
18.4 |
2.2 |
2.2 |
0.0754 |
300 |
20.8 |
2.4 |
2.6 |
0.0601 |
400 |
24.1 |
2.6 |
2.6 |
0.0470 |
500 |
26.9 |
2.8 |
2.8 |
0.0366 |
630 |
30.2 |
2.8 |
2.8 |
0.0283 |
800 |
33.5 |
2.8 |
2.8 |
0.0221 |
VI. Please see the following table for flow (30℃) reference value of single core cables during the laying operation in the air.
Conductor section mm2 |
XLPE cable A (rated temperature 90℃) |
PVC cable A (rated temperature 70℃) |
6
10
16
25
35
50
70
95
120
150
185
240
300
400
500
630
800
|
54
75
100
161
201
246
318
389
454
527
605
719
740
847
1013
1190
1527 |
43
60
80
130
162
197
254
311
362
419
480
569
659
795
920
1020
1413 |
VII. Laying construction methods
Generally speaking, the pre-fabricated assembly branch cables of vertical main line shall be laid according to the following points:
Place the cable disc on the pay-off stand (the cable disc shall be placed in the downstairs and cables shall be lifted up);
Lifting ropes shall be connected with cables through winding machine;
Start the winding machine and lift up cables;
Once the lifting cable net sleeve has reached the roof, suspend the net sleeve on the prepared hook;
Fix up the middle part;
Connect the branch line end and current meter or circuit breaker;
Connect with the horizontal main line or main circuit board.
VIII. Construction notice
Special attention shall be paid to the following points during the laying of pre-fabricated assembly branch cables:
Confirm the transportation methods (vehicle dimension and parking lot) in advance;
Confirm whether pre-fabricated branch can safely pass the hole;
Adopt preventive measures to prevent branch damage in the holes during lifting operation;
Refrain from imposing tension force on branch during lifting operation;
Utilize lifting cables with above 4 times cable weight;
Consider rainwater shed measures and empty disc disposal measures in advance;
After the cable lifting operation, adopt proper measures for fixation to avoid falling and thus damage;
It is forbidden to utilize iron clamping tools for single core cables.
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