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Power factor (again)

Johno12345

Sorry for yet another question on this topic.

 

I have got sub metering installed on all outgoing submains, I also have a meter on the incoming main

 

Between the main meter and sub meters, I have my power factor correction

 

over a week, I'm getting about 1,500kWh of difference, the sub meters total being higher by that amount compared to the incomer meter.

 

I'd like to say that the power factor correction has effectively saved that number of kWh, is that correct?

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    Any on-site generation?

    yes, about 20kW but thats down stream of one of the sub meters, it doesn't take it negative

     

    Most simple meters seem to only record “import” and ignore “export” - rather than clocking backwards for example (there used to be a ratchet-and-pawl symbol on at least the old mechanical ones) - so it seems possible that some of the 20kW is coming out of one sub (not recorded) and then being consumed by a different sub (recorded) without going through the main meter at all.

    20kW would be 3,360kWh per week if running 24h/day - so might explain 1,500kWh/week if it wasn't producing 24x7 or half the generation was consumed in the same sub.

     

    Edit - just seen your post about the sub-meters - what do the export registers show?

       - Andy.

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  • 0


     

    Any on-site generation?

    yes, about 20kW but thats down stream of one of the sub meters, it doesn't take it negative

     

    Most simple meters seem to only record “import” and ignore “export” - rather than clocking backwards for example (there used to be a ratchet-and-pawl symbol on at least the old mechanical ones) - so it seems possible that some of the 20kW is coming out of one sub (not recorded) and then being consumed by a different sub (recorded) without going through the main meter at all.

    20kW would be 3,360kWh per week if running 24h/day - so might explain 1,500kWh/week if it wasn't producing 24x7 or half the generation was consumed in the same sub.

     

    Edit - just seen your post about the sub-meters - what do the export registers show?

       - Andy.

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