Hi,
I know this a DIY forum but maybe someone here can help with a metering issue…
I have an 11kV supply to a building which is fed from a HV substation nearby. The DNO meter for the supply to the building is outside the substation in a cabinet and meters the 11KV output from a transformer specifically for the building (I have been in the substation with DNO to verify this)
There is then an 11 KV transformer in the yard of the building with LV supplies coming directly into a distribution cabinet which is then privately metered at LV.
The 11 KV supply cable, transformer in the yard etc. are all privately owned.
I hope the above makes some sense, anyway the problem is the building is empty apart for security lights, cameras etc. The LV metering shows consumption of 12KWh per day. The HV meter is showing an average of 500Kwh per day! It is a half hour meter with data collector and I have data but it all seems random.
I have taken various readings on both meters, had clamp meters on LV tails and had the DNO and supplier out to confirm the setup, all appears in order apart from the readings not matching up between LV and HV. Both meters read 0 when the LV supply is off, and I have traced each DB across the building and most are off so there is nothing obvious untoward.
I have been told that HV meters do not pick up small loadings well? Anyone got any experience of this or any ideas before I go down the route of having a check meter fitted at cost.
£10K of electric in an empty building over 5 months
I know this a DIY forum but maybe someone here can help with a metering issue…
I have an 11kV supply to a building which is fed from a HV substation nearby. The DNO meter for the supply to the building is outside the substation in a cabinet and meters the 11KV output from a transformer specifically for the building (I have been in the substation with DNO to verify this)
There is then an 11 KV transformer in the yard of the building with LV supplies coming directly into a distribution cabinet which is then privately metered at LV.
The 11 KV supply cable, transformer in the yard etc. are all privately owned.
I hope the above makes some sense, anyway the problem is the building is empty apart for security lights, cameras etc. The LV metering shows consumption of 12KWh per day. The HV meter is showing an average of 500Kwh per day! It is a half hour meter with data collector and I have data but it all seems random.
I have taken various readings on both meters, had clamp meters on LV tails and had the DNO and supplier out to confirm the setup, all appears in order apart from the readings not matching up between LV and HV. Both meters read 0 when the LV supply is off, and I have traced each DB across the building and most are off so there is nothing obvious untoward.
I have been told that HV meters do not pick up small loadings well? Anyone got any experience of this or any ideas before I go down the route of having a check meter fitted at cost.
£10K of electric in an empty building over 5 months