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HV & LV Metering Issue

Stuz
Hi All,

We have site which has been running for 6 months now. It's industrial process served via a 2MVA transformer fed from HV RMU at 11,000V. The transformer is cast resin with less than 1% loss. Our works were installing the transformer and LV panel with a significant post contract fitout by the developer including process supplies. It’s metered at HV but the site is reporting discrepancies between the HV and the LV meter on the incomer. The HV meter is indicating up to 50% more usage than the LV meter. Given that the 2 should generally even out, taking into account transformer and other losses I can only assume they have a significant harmonic issue caused by the process load which is greatly reducing the losses at the transformer. This was my initial thought when I saw the figures. Thoughts from the community?


Thanks in advance.
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  • 0
    Thanks to everyone for their responses.

    The end user has approached the DNO and requested them to investigate their metering setup.
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  • 0
    Thanks to everyone for their responses.

    The end user has approached the DNO and requested them to investigate their metering setup.
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