Connection winding salient pole of AC generator to rotating rectifier 2

[sbarkah]

Dear members,

I have problem on our AC generator (Marelli Generator MJB 355) with salient pole rotor (4 poles). The AC generator was need to repair due to suspressor diode was broken, then we taken out the rotor to repair rotor exciter. We disconnected cables rotor's winding from rotating rectifier and we didn't put tag to 2 cables/conductors.

Are the cable should reconnected to the (-) and (+) terminal of rotating rectifier correctly or we can connect 2 cables without consider (-) and (+) terminals of rotating rectifier?

Many thanks for your help.

Regards,
Barkah

 

[waross]

Thanks for dropping in Mike.
Barkah, I would follow Mikes advice.
Yours
Bill

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[sbarkah]

Dear Mike and Bill,

Thank you for your respond.

Actually, we have not any testing yet after replace suppressor and rewinding the rotor exciter.
As both of you mentioned, before the alternator put back in service, we need to do as follows:
1. Flash the exciter to ensure exciter has enough residual magnetism.
2. Drop test (?) for our salient poles (4 poles.
3. Anything else?

Appreciate with your valuable respond and we will follow your advise.

Thakn you.

BR,
Barkah

 

[catserveng]

An insulation resistance test of the main rotor, I usually do a PI test to at least have some kind of record of condition.

 

[sbarkah]

Dear Mike,

Well noted.
We will do insulation test on the main rotor also, especially PI to ensure the condition based on insulation class. CMIIW.

Thank you.

Best Regards,
Barkah