Transcription of Admittance Testing CT Installation Integrity - Power
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Admittance Testing CT Installation Integrity - Power
IntroductionInstrument transformers , more commonly known as current and Potential transformers are remotely located from the electricity me-ter and wired into the primary circuits of the service. During Installation and subsequent evaluation of the service, the accuracy and per-formance of instrument transformers are often overlooked. Traditionally CT Burden testers Radian Research, TestingVerifi esCT InstallationIntegrityAn Admittance tester confi rms the installed condition of the current transformer s internal burden and external connected burden by monitoring its been the only device available for in-ser-vice accuracy certifi cation of instrument trans-formers.
The burden challenge is presented to the in ser-vice current transformer secondary in the form of a known ohmic resistance value that is added
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