PT secondary voltage step-down is one of the reason which causes the comprehensive error of the electric energy metering equipment.
而PT二次压降又是引起电能计量装置综合误差的直接原因之一。
In power system, it can excite partial parallel resonance or serial resonance, enlarge the harmonic wave, trigger relay protection system in error and disturb electric power energy metering equipment.
在电力系统，它可以刺激局部并联谐振或串联谐振，放大谐波，引发继电保护系统误差和扰乱电力能源计量设备。
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