Not tACTS with a beautiful and harmonious campus, harmonic Zhang curtain, but up to the teachers, to the students school, have a care about each other, a tolerance.

和谐的校园，并不是徒具优美谐鄣幕肪，而是上至师长，下至同学校工，彼此都有一份关心，一份包容。 。

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It covers five aspects: supply voltage tolerance, utility harmonic, three-phase voltage unbalance, power system frequency tolerance, voltage fluctuation and flicker.

它涵盖五个方面：供电电压允许偏差、公用电网谐波、三相电压不平衡度、电力系统频率允许偏差、电压允许波动和闪变。

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