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珠海某包装材料有限公司固相变电所供电变压器带有很多变频器负载,电压和电流谐波均严重超标。变压器低压总出线谐波电流最大可达400A,考滤到实际需要和经济我公司为其选配1套270A的有源滤波器,使用后谐波电压畸变率由8.1%降到4.5%,谐波电流也由400A降到约150A,满足了国标要求,达到了谐波治理目地。
滤波器投入前(红色电压,蓝色为电流) 滤波器投入后(红色电压,蓝色为电流)
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