MOTOR OR GENERATOR?? 2

[HUNJAN]

A customer brought in a motor for repair. It is a 3 phase motor 2 pole 400 volts off a refrigeration unit of a lorry. The customer says it is a generator.The motor has a rotor and is connected star on the terminal block.When i power the motor it runs at the rated speed.So why does the customer say that it is a generator which is run by an engine???

 

[GusD]

hello Damngr

Last time I flashed the fields in a generator I used a 12 volt battery.Actually I had the wrong polarity,it was backwards ,so we reversed the leads and did it again.Eureka,we had power.
It was a few years ago and I don't really remember the
small detail, but for all its worth,if you use a battery
and just touch the field it should work.
Check your field resistance top make sure you don't have excess fire works.This is a momentary contact with the field leads.Somebody might have a more formalized procedure and thatwould be best.Probably wouldn't differ much from what I mention,but just to be sure.

Good luck

GusD