This abnormal starting problem sometimes occurs unpredictably without mechanical damage.
And after the starting problem occurs, it starts up normally and there is no problem at all with no-load / load operation without mechnical damage (compressor(bearing/gear teeth/pinion thrust...
Hi, zlatkodo,
Your suggestions is good & very helpful (depending on the positions in which the rotor stopped).
I can't say the motor manufacturers in this thread and the motor have the original winding of the stator and rotor bars.
I'll check whether it is Copper bar or an Aluminum bar.
Hi...
edison123, I checked the coupling, but could not find any fault in the copling. Thank you!
I counted the number of motor start/stop(Motor Power On/Off) in 8 month compressor operation.
During 8 months of operation, there were 24 starting(Motor power ON), 3 of which were starting problem(Motor...
Thanks All.
1. The compressor is started unload conditions always with Full closed IGV(Inlet Guide Vane) & Full opened Discharge BOV(Bolw Off Valve.
2. We opened the compresor gearbox.
We inspected and checked the 1-bull gear & 2-pinion gear teeth, gear thrust collar,
Low speed...
Thanks, Kiribanda
When the motor is power ON, Can I understand that if more than Max.LRC,310A(motor data sheet) is input, the motor will not rotate and will be locked?
I'd like to measure the current, voltage (normal condition vs abnormal condition(motor locked & big sound).
The motor data...
Thanks,Gr8blu
1. Does the motor turn freely (by hand) when not connected to the compressor? Any grinding or squealing noise when doing so?
When stopped and checked by hand barring, it rotates freely without any unusual noise.
There is no damage to the compressor/motor or any special mechanical...
3-Phase Induction Motor starting problems (Locked Motor & abnormal loud sound)
When starting the motor, there is a problem in which a loud noise occurs as soon as power is applied
and the motor rotation is restricted(locked).
The driven machine is a integrally geared centrifugal...
