Use
Rated voltage Uo/U is divided into 0.6/1kV, 1.8/3kV, 3.6/6kV, 6/6kV, 6/10kV,
8.7/10kV, 8.7/15kV, 12/20kV, 18/30kV, 21/35kV, 26/35kV
Usage characteristics
, the maximum operating temperature of the conductor is as follows: the insulation of cross-linked polyethylene is 90, and the insulation is 70,
The highest temperature of the cable conductor is not exceeded at the time of the short circuit (not exceeding 5 seconds):
The insulation of the cross-linked polyethylene is 250, and the insulation is 160;
Conductor DC resistance in accordance with the provisions of GB/T 3956.
When laying the environment temperature is not less than 0, and the first to be warm when it is below 0.
15 times three core non minimum bending radius is not less than the diameter of the armored cable, not less than 12 times of cable diameter are sheathed.
20 times the minimum bending radius of single core armored cable diameter not less than, no less than 15 times of cable diameter are sheathed.
Cable laying is not limited by the level of the gap.
Power frequency withstand voltage test:
Uo 3.6kV: 2.5Uo+2kV/5min cable breakdown;
Uo for 3.6kV~18kV cable: 3.5Uo/5min no breakdown.
Uo for 21kV and 26kV cable: 2.5Uo/30min not breakdown or 3.5Uo/5min.
Partial discharge test: the 1.73Uo is not less than 10pC, the sensitivity of the test is no discharge.
In order to meet the market demand, according to the specific requirements of customers, our company technology center launched special corresponding with flame retardant properties, fire resistance, low smoke and no halogen performance, termite proof, waterproof, sunlight resistance, anti ultraviolet, rat proof performance, resistance to oil properties such as excellent special performance of power cable. flame retardant cable can be subjected to the GB/T18380 test, the concentration of smoke is in accordance with GB/T19666-2005 regulations. The pH value of the water solution of the combustion gas is ≥ 4.3, the conductivity is ≤ 10us/mm. Fire resistant cable can withstand GB/T19216.11 and GB/T19216.21 provisions of fire test. The anti - proof test of the anti - termites in rats is in accordance with the requirements of.
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