What is Primary and Secondary Injection Test of CT and
Relay.
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Answer Posted / yusuff ibrahim sipchem
Primary imnjection test- to test the circults including the primary circuit, i.e the CT by injecting the current to the busbar at low voltage, thew current will be according the busbar system rated current
Secondary injection test-to test the secondary circuit ony, whcih includes the relay and secondary wiring only. CTs can't be tested with this. in this the current will be normally 0-10Amps
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