I was going through the standards related to motor testing that are IS 12615, IS 15999-1, IS 15999-2-1 while reviewing a motor with requirements of 3phase induction motor, 1500rpm, 120hp, 415V and delta connected.
I observed that there are requirements specified for
- Insulation resistance (less than 30 Mohm)
- HV test (1000+2*rated voltage for 1min)
- Reduced voltage test (Apply 1/sqrt3 of rated value and check ability to run at rated speed)
But there are no requirements specified for
- Stator resistance
- Speed (The rated speed is 1500rpm but I am getting a motor with speed 1460rpm, is it acceptable?)
- No load test
- Locked rotor test.
I would really appreciate if you could clarify what I am missing here.