CURRENT TRANSFORMER DOBLE TESTING TRIPPING UPSTRING BREAKER

This month’s Featured Technical Paper is from the Proceedings of the 2024 International Conference of Doble Clients. The paper is titled: Current Transformer Doble Testing Tripping Upstring Breaker.

Abstract

This paper will discuss testing methods for current transformers (CT) during routine maintenance. The current method recommended by Doble [1] is to disconnect the CT secondary side, which requires additional effort when there are labor shortages. Also, the authors will share an inadvertent outage that impacted several customers when a circuit breaker tripped by the electrical protection during an insulation test on a current transformer. A new test method has been investigated and should be implemented into a test program when performing a test on a current transformer.


Doble Service Agreement Clients
This and other technical papers and presentations are available in MyDoble - one of the many benefits available to you as a Doble Service Agreement Client. To get a MyDoble login click here. Not a member? Follow the sign-up process.