Hi All, I'm more an electronics engineer but I work on an industrial estate supplied by a single HV meter. The estate has several units each one sub metered from a resident 500KVA transformer.
When comparing the main incoming supply meter reading with the total of the sub-meter readings we get an average 10% difference. So a total load of 200KW the metering suggests there is 20KW of losses.
Does this seem normal for a 500KVA transformer and associated infrastructure?
The electric bill shows a KVArh value which is 10% of the KWh total but all the meters work in KWh so not sure if this is a red herring.
Many Thanks,
MPC.
