提供了一般低压配电网主电源侧短路电流计算的公式。
A formula for short current calculation in low voltage power grid distribution was put forward.
内置后配电池,保证无外接电源时,时间可常运转。
Without external power source, Internal battery can ensure the time displays normally.
内置后配电池,保证无外接电源时,时间可常运转。
Without external power source, Internal battery can ensure the time displays normally.
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