Recent Articles
Core Frame Tank Test of Transformer: Complete Practical Guide
Transformer core frame tank test is basically a insulation test which verifies the magnetic core of the transformer and its structural frame are insulated properly from the transformer tank. This test is performed to ensure that there is no unintended grounding path between the core assembly and the …
Secondary Injection Test: Complete Procedure, Logic Checks, and Acceptance Criteria
Secondary injection test is a controlled process of verifying the correct operation of protection relays and associated control circuits without energizing the primary power equipment. In the secondary injection test, a calibrated test kit injects low level current and voltage signals directly into the relay’s secondary terminal, simulating …
