Prok dv s make static earth leakage relay elr with core balance current transformer cbct zct are used to detect the leakage current in an electrical power system.
Earth leakage relay with cbct.
Of the elr and cbct should match for better performance the performance shall be guaranteed if the serial no.
Of the elr and cbct are matched.
Installation procedure for earth leakage relay cbct.
Earth leakage relay with inbuilt cbct 30ma fixed elctr35 1 30ma 230v.
Check the sensitivity of earth leakage relay and also the inner diameter of core balance current transformer.
Earth leakage relay elr can detect if the cbct zct connection status ie detecting the cbct zct open to ensure the healthiness of the relay.
The earth leakage relay elr has back lit lcd display 2 line 8 character for displaying the nature and magnitude of fault.
The core balance current transformer or cbct is normally of the ring type through the centre of which is passed cable that forms the primary winding.