Electrical Engineering

TESTING OF DC MACHINE

1. SWINBURNE'S TEST (NO LOAD TEST) - For determination of CONSTANT LOSSES

2. RETARDATION TEST(Running down test) - For determination of STRAY LOSSES IN CASE OF DC SHUNT MACHINE

3. HOPKINSION TEST (Regenerative test, Heat run test ,Back to back test) - For determination of PERFORMENCE OF MACHINE REGARDING COMMUTATION AND TEMPERATURE RISE

4. OPEN CIRCUIT TEST -For determination of CORE LOSS

5. SHORT CIRCUIT TEST - For determination of COPPER LOSS