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Document Number: ECP 11-0211 Date: 30/01/2017 CAPACITOR VOLTAGE TRANSFORMER TEST FORM Substation Name Substation Number Circuit Project Number MPAN(S) Voltage Transformer L1 L2 L3 VT Group Function Location Serial Number Make Type Ratio Rating General Checks Prove tightness of all fastenings All insulators are undamaged and clean Gaps of arcing horns or rings Labelling Tank oil tests (if filled on site) Tank oil level Breather Main earth bar connections HF earth rods and connections if fitted Action of door earth switch Venting and sealing of terminal chambers Spark-gap setting, Intermediate terminal to earth. Mechanical check only, if accessible CVT calibration tap-settings. Visual check (if accessible) against nameplate or test certificate Continuity intermediate terminal to earth CVT fixed internal burden in ohms (where applicable) L1 L2 L3 THIS IS AN UNCONTROLLED DOCUMENT, THE READER MUST CONFIRM ITS VALIDITY BEFORE USE Version: 3.0 Capacitor Voltage Transformer Test Form Document Number: ECP 11-0211 Version: 3.0 Date: 30/01/2017 VT Insulation Resistance L1 L2 L3 L1 L2 L3 CVT Secondary Circuit Fuses Functions and Ratings L1 L2 L3 CVT Secondary Output Tests L1 L2 L3 L1 L2 L3 Measure and record the insulation resistance at 1kV to earth Secondary winding 1 to earth Secondary winding 2 to earth Secondary winding 1 to secondary winding 2 VT Terminal Box Tests Continuity of earth connections Terminal box venting and sealing Secondary winding insulation resistance Prove secondary winding earth-link Secondary output voltage (measured at the various secondary-fuse outlets with the CVT alive at primary system voltage) Primary system voltage during test (if value available) CVT Phasing Tests Voltages measured between the output terminals L1, L2 and L3 of the VT under test, and the output terminals L1r, L2r and L3r of a reference VT of known phasing Phases L1r L2r L3r Phasing tests carried out with respect to VTs of known phasing on circuit © UK Power Networks 2017 All rights reserved 2 of 3 Capacitor Voltage Transformer Test Form Document Number: ECP 11-0211 Version: 3.0 Date: 30/01/2017 Comments Test Equipment Purpose Make/Type Serial Number Certification () All tests have been completed satisfactorily Contractor Commissioning Engineer (if applicable) Organisation Name Date Signature UK Power Networks Commissioning Engineer Name © UK Power Networks 2017 All rights reserved Signature Date 3 of 3