We have a 100 KVA three phase brushless alternator in our shop for repair. One of the diodes on the rotating ring needs to be replaced. The diodes have no identification markings on them-either worn off or never existed. The excitation voltage is 46 volts, and 2 amps current. Would a 50 volt...
Hello all. We have 10 identical brake motors in our shop for bearing change and clean ups. All the windings are factory, all surge test good etc. When we run test motors here, we use a soft start system. The system starts at 200v the ramps to 480v in aprox 10 seconds. When we did our final...
My company wishes to buy a high power electric motor test set. The major players provide a choice of regulation:SCR or variable transformer. My question for the experts, which is better? Pros and Cons?
Thank you for your input.
Bill
Hello all-
We have received into our shop a 500hp vertical pump motor. Allis Chalmers 15HS frame, 240 rpm. Upper thrust and guide bearing assembly is Kingsbury tilting pad type. Lower guide bearing is the one in question. Motor came in due to lower guide bearing failure. We could not...
I am familiar with Pdma Corp MCE tester, now my company wishes to purchase a Reliability Direct All Test Pro. It is much less expensive than the MCE. Does anyone know if it is any good? We test polyphase motors up to several thousand HP. It appears that this tester is only good for small...
