Product Introduction
KBZ9 series mine explosion proof feed switch (hereinafter referred to as feed switch) is suitable for underground coal mine contains explosive gas (methane) mixture, as main switch or branch switch in the power supply system, with the frequency of 50Hz, voltage of 1140V/660V and current of 200A to 400A. And also can be used as the large capacity motor for starting without frequently controlling. Meanwhile the signals from wind and electricity interlock control will be introduced.
Implement standards of feed switch: Q/ZD06-2006«Mine Explosion Proof Vacuum Feed Switch»and MT 871-2000«Mine Explosion Proof and Low-voltage AC Vacuum Feed Switch».
Main Parameter
a)Rated working voltage;1140 (660)V,660(380)V
b)Rated working current;200,400A
c)Rated working system; long-term
d)Max breaking capacity;1140V,7.5kA
e)Operation mode;Manual closing or opening
f) The acting time of leakage resistance pass through 1KΩ; as a branch switch≤30ms;as a main switch≤100ms(no delayed),
200~400ms(delayed)
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