CT and VT Ratio Valid Set
Current Transformer and Voltage Transformer Ratio Valid Set |
Guidance Note |
Current Transformer and Voltage Transformer Ratio Valid Set
Where to find the list of valid Current Transformer (CT) and Voltage Transformer (VT) Ratios
Where to find the process for adding and removing CT and/or VT Ratios
What is the CT and VT Ratio Valid Set?
Where can the CT and VT Ratio Valid Set be found?
Where can the process for changing the CT and VT Ratio Valid Set be found?
Requests to amend the valid set (add or remove) must be sent to the Elexon Metering team (metering@elexon.co.uk)
On receipt of a request to amend the valid list, Elexon will check the submitted ratios meet the valid format before adding the CT/VT ratio to the valid list, which will be published on the Elexon Portal.
Where there is a request to add or remove a ratio from the valid list, Market Participants will be notified, via a Newscast article, 10 Working Days (WDs) before the valid set is amended and published.
If any objections are raised to the request the requester will be notified, asked for an explanation and a hold will be placed on the amendment if required.
Where no, or any valid objection, has been raised Elexon will add or remove the relevant ratios and publish them on the Elexon portal 10 WDs after the publication of the Newscast article.
Further Information
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1 Referred to as Metering Equipment Managers (MEM) under the Retail Energy Code Metering Operations Schedule.
2 Where the BSCP515 ‘Submission of the Current Transformer (CT) and/or Voltage Transformer (VT) ratios for inclusion (or removal) in the BSCCo
valid set’ process refers to LDSO this can be read as SVA MOAs for where an SVA MOA wishes to amend the valid set.