motaz4a

@click2electro I have compared the current measurements circuit in both CTs they are identical but only the difference in primary/secondary connection in series or in parallel. I have adjust the conne...

@click2electro Thank you one question please, I have ordered CT (HX 10-NP) from Farnell site but the received CT although has same P.N but different connection between primary and secondary as follow ...

@click2electro  IMG_20240120_153935.jpg

Please assist me to solve the fault 18 thermal fail on ACH550 drive, where the resistance reading at NTC points is 54k ohm Regards

@click2electro I didn't find the attachment, could you please resend it? meanwhile, the IGBT driver has been replaced (2 ICs), While replacing the power module I found some of the tracks were cut and ...

@click2electro I have replaced the CTs and CT IC mentioned in your reply and the fault gone. Thank you Kindly assist me in new case that is appeared after replacing the power module, where the output ...

@click2electro  IMG_20240120_153935.jpg

I have same problem in ABB ACH550, can you please share photo for CT location into the power board?