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Metering harmonics

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wilkin1

wilkin1

Electrical
Sep 19, 2010
2
GB
Are there rules regarding the use of earthed primary VOLTAGE TRANSFORMERS for tariff metering
 
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I'm not aware of any rules (UK) but all the systems I work on have one side of the VT earthed (single phase units) or yellow phase earthed (3 phase units).
 
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