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矿井高压电网中,如果单相接地电容电流过大,可能引起电气火灾,破坏矿井高压电网,增大引发矿井瓦斯、煤尘爆炸的概率;另外,单相接地电容电流引起的杂散电流可以导致电雷管超前爆炸。历版《煤矿安全规程》均作出“矿井高压电网,必须采取措施限制单相接地电容电流不超过20A”的规定。准确测量出其电流,采取措施限制电网单相接地电容电流值,对确保矿井安全生产意义重大。
In the high-voltage mine network, if the single-phase grounding capacitor current is too large, it may cause electrical fire, destroy the high-voltage grid in the mine and increase the probability of mine gas and coal dust explosion. In addition, the stray current caused by the single-phase grounding capacitor current can cause Electric detonator ahead of the explosion. Calendar version of “coal mine safety regulations” are made “high-voltage mine grid, measures must be taken to limit single-phase capacitor current does not exceed 20A ” provisions. Accurately measure the current, take measures to limit the current single-phase grounding capacitor current value, to ensure mine safety production of great significance.