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Anonymous users2024-01-24The current is not large, no transformer is used, and a direct three-phase four-wire watt-hour meter is used, such as: DT862-4 3 20 (80)A 220 380V, equipped with a transformer.
Generally, the measuring range of the measuring instrument is 1 2 2 3, then: 55 (2 3)=; It is appropriate to choose a direct three-phase four-wire watt-hour meter of 20 (80) A or 30 (100) A
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Anonymous users2024-01-23Use a 3*15(60)A, 380V meter.
If you use a transformer, use a current of 3*, and use a transformer of 75 or 5.
Needless to say, 380V, right? 220V is to choose one of the three live wires and connect one out, and connect one from the neutral wire to become 220V.
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