CP1505: Off site Commissioning of current transformers

Formal title: Allowing ‘off site’ Commissioning of current transformers preinstalled in cut outs or switchgear at manufacture for use in low voltage (LV) installations

Current Status

Submission
Assessment
CPC Consultation
Committee Decision
Awaiting Implementation
Implemented

Summary

Code of Practice 4 (CoP4) details the requirements of Commissioning Metering Equipment for Settlement purposes in LV installations to be done ‘on site’. This is not always reasonably practical or physically possible and should be updated to allow ‘off site’ Commissioning of current transformers. In some installations current transformers are delivered in sealed units and have already been tested (and certain requirements of CoP4 confirmed) by the manufacturer ‘off site’. In these instances it may not be cost effective to complete all Commissioning tests ‘on site’. Furthermore, for some sealed units it may not possible or overly difficult to access the current transformers to perform the required tests. This introduces an un-necessary hazard to Commissing staff when the Commissioning could be better completed ‘off site’ in a more controlled and practical environment.

Progression

CP1505 was raised by GTC (ETCL & IPNL) on 12 March 2018. CP1505 was presented to the ISG for information on 20 March 2018 and to SVG for information on 27 March 2018. CP1505 was issued for consultation on 9 April 2018 with responses due by 4 May 2018. CP1505 will be presented to SVG and ISG  for decision at their meetings on 29 May 2018 and 19 June 2018 respectively.

Next Events

CP1505 will be presented to SVG and ISG  for decision at their meetings on 29 May and 19 June respectively.

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