Transformer Differential Relay Testing

Protective tools and processes called transformer differential relay testing  are used to find and address internal defects in a transformer. Testing these relays guarantees their correct operation and contributes to the transformer's dependable operation. On the basis of comparing the currents entering and leaving the transformer, transformer differential relays work. Any difference between these currents denotes a transformer problem.   On the other hand, An insulation resistance test that is frequently used to evaluate the insulation in transformers and other electrical equipment is the Polarisation Index test . The PI test measures a transformer's insulation resistance over a predetermined period of time. It gives a hint as to the general health of the insulation system, including the presence of moisture, contaminants, or ageing effects.   The key points about differential relay testing are:   ●  Testing a transformer differential relay is applying a known ...