BRIEF
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.
CONSTRUCTION
Scope of XLPE cable Type No. of Core Nominal cross-section
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 |
CHARACTERISTIC
D.C Resistance of finished cable at 20℃ per km is not more than the following:
| Nominal cross-section mm2 | 15 | 2.5 | 4 | 6 | 10 | 16 | 25 |
| Cu core | 12.1 | 7.41 | 4.61 | 3.08 | 1.83 | 1.15 | 0.727 |
| Al core | 18.1 | 12.1 | 7.41 | 4.61 | 3.08 | 1.91 | 1.20 |
| Nominal cross-section mm2 | 35 | 50 | 70 | 95 | 120 | 150 | 185 |
| Cu core | 0.524 | 0.387 | 0.268 | 0.193 | 0.153 | 0.124 | 0.0991 |
| Al core | 0.868 | 0.641 | 0.443 | 0.320 | 0.253 | 0.206 | 0.164 |
| Nominal cross-section mm2 | 240 | 300 | 400 | 500 | 630 | 800 | 1000 |
| Cu core | 0.0754 | 0.0601 | 0.0470 | 0.0366 | 0.0283 | 0.0221 | 0.0176 |
| Al core | 0.125 | 0.100 | 0.0778 | 0.0605 | 0.0469 | 0.0367 | 0.0291 |
Voltage test:
Each drum of finished cable should withstand power frequency voltage 3.5kV for 5 minutes,the insulation is not breakdown.
Service conditions and operation parameters of Cable:
The cable is applied to fixed installation for rated voltage 0.6/1kV of power transportation and distribution line.
Max. rated temperature of conductor. nominal operating 90℃
Short circuit: max. for 5 sec.250℃
The cable can be laid without drop restriction, and the environment temperature shall not be lower than 0℃.
STANDARD
Our XLPE cable can be manufactured according to the company’s specification which is equivalent to IEC 60502,IEC60332,IEC60754.
Some indexes are superior to above international standard.
