swampy84
11-10-2014, 04:35 AM
Hi all. Went to a job other day and customer was complaining
About no standby operation. (240v single phase) Checked the source and found mains power
Had been tripped. Meggered the extension lead, tested all ok.
Reset the mains, unit started but cut out very quickly.
Reset mains once again, this time manually pushing the contactor in
with the same result once again cutting out immediately.
Isolated all wiring from windings and found windings going straight to
Ground @ 500V test.
Strangest thing though, I have since removed the compressor and drained the oil
Only to retest the windings on a bench and @ 500 V resistance is infinite!
Has anyone else seen anything like this before?!:confused:
About no standby operation. (240v single phase) Checked the source and found mains power
Had been tripped. Meggered the extension lead, tested all ok.
Reset the mains, unit started but cut out very quickly.
Reset mains once again, this time manually pushing the contactor in
with the same result once again cutting out immediately.
Isolated all wiring from windings and found windings going straight to
Ground @ 500V test.
Strangest thing though, I have since removed the compressor and drained the oil
Only to retest the windings on a bench and @ 500 V resistance is infinite!
Has anyone else seen anything like this before?!:confused: