本调压器容许的电网电压波动范围较宽，而输出电压波动范围较小。
The allowable line voltage fluctuating range of the designed voltage regulator is wider, while the output voltage fluctuating range is smaller.
电源电压波动必须在允许范围内，并且保持相对稳定。
Power supply voltage fluctuations must be within the allowable range, and remain relatively stable.
在电压正常波动范围内实现无功基本平衡。
In the normal fluctuation range of voltage it could realize reactive power balance basically.
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