Running often appears high resistance grounding cable when the lack of instruments, generally high impedance fault first burn through to low resistance fault by using the method of the bridge for cable fault point.
If an alternating, due to cable capacitance is large, the capacity of the equipment is large, in addition, the ac voltage crossing zero arc easily, so the burning through effect is bad, if to do, as long as through the current of 1 a or so can burn through the point of failure, the effect is better, in addition, due to cable capacitance under the effect of dc voltage, do not produce capacitive current, the capacity of the equipment can be smaller.
ZMS cables suppiler is strictly reviewed and quality tested, and are definitely the first choice in terms of quality and safety.
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