safety power cutback system
... safety plug socket 安全塞座，熔丝塞座 safety power cutback system 安全功率下降系统 safety practice 安全措施 ...
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电力系统无功功率补偿不足会引起功率因数下降，而三相功率不平衡则会影响到用电设备的安全。
The power factor of power system will be decreased by under-compensation of reactive power and it is harmful for the devices of customers while the power in the three phases are unbalanced.
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