25mm2 Underground Copper Electrical Cable Wire
1.Application
XLPE insulated power cable has a number of advantages over paper insulated and PVC insulated cable. XLPE cable has high electric strength, mechanical strength, high-ageing resisting, environmental stress resisting aiti-chemical, corrosion, and simple construction, using convenient and higher operating of long term temperature. It can be laid with no drop restriction.
Various of flame-retardant XLPE cable can be manufactured with three technology. The flame-retardant cable covers all kinds of low-smoke, halogen free, and non-smoke non-halogenated and three classes of A, B, C.
2.Construction
Scope of XLPE power cable
Type No. of Core Nominal cross-section
|
Type |
No. of Core |
Nominal cross-section |
|
Cu(AL)/XLPE/PVC(PE) Cu(AL)/XLPE/ATA/PVC(PE)Cu(AL)/XLPE/AWA/PVC(PE) |
1 |
1.5-1000 |
|
Cu(AL)/XLPE/STA/PVC(PE) Cu(AL)/XLPE/SWA/PVC(PE) |
2,3,4,5 |
1.5-400 |
|
3+1,4+1,3+2 |
2.5-400 |
Cross-section area of neutral conductor
In 3+1cores and 3+2cores should conform to specification of following table:
|
Nominal cross-section |
Main core |
2.5 |
4 |
6 |
10 |
16 |
25 |
35 |
50 |
|
Neutral core |
1.5 |
2.5 |
4 |
6 |
10 |
16 |
16 |
25 |
|
|
Nominal cross-section
|
Main core |
70 |
95 |
120 |
150 |
185 |
240 |
300 |
400 |
|
Neutral core |
35 |
50 |
70 |
70 |
95 |
120 |
150 |
185 |
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