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DD28-3, DD28-4 Single-phase Watt-hour Meter
Product Description
DD28-3、DD28-4 single -phase watt-hour meter is induction meter which is applicable to measure the rated frequency 50HZ~60HZ and power loss in electrified wire netting. All technical targets are completely conformed  to National Standard GB/T 15283-94 and International Standard IEC 521
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