The maximum operating temperature of the cable conductor is 250, and the maximum temperature of the cable conductor is not more than 1000.
Cable laying temperature not lower than 0 DEG C, otherwise should consider preheating
The permitted lowest ambient temperature: -120 degrees
At 950 DEG -1000 DEG when the sustainable supply of not less than 3 hours:.
With high temperature resistance, fire, explosion, burning (250 DEG C can continuously run for a long time, 1000 DEG C limit state can also be 30 minutes short run), the time is short or very period can be close to the melting point of copper 1083 DEG C work. The characteristics of the load flow, small diameter, high mechanical strength, long service life, and the general need not be independent grounding wire.
Widely used in nuclear power plants, metallurgy, chemical, coal, and other dangerous, harsh, high temperature environment. Is gradually applied in high-rise buildings, airports, terminals, subway, etc., used to safeguard in case of fire the fire pump, fire elevator, local lighting, emergency evacuation instructions, the public security surveillance, protection, exhaust system and bring their own power and fire power uninterrupted operation of the important equipment.