Commutator risers on 4000HP motor
Commutator risers on 4000HP motor
(OP)
We are having a spare armature built for a 4000HP motor.
In the past, we've experienced problems with the commutator risers breaking at their welded joints. The risers are about 14" long.
We have retrofitted one of the existing motors with a riser support ring. The risers are tied to the support ring in two places, equally spaced. We've also added a kink in each of the risers to allow some flex. We haven't had any problems since the retrofit.
The new armature will feature a support ring, but the maufacture isn't so sure that we need the kink in the risers. We think we want the kinked risers, but we aren't sure. The risers will likely cost us a little extra and will add lead time to the armature delivery.
Does anyone have any experiance with this subject? Any input would be appreciated.
In the past, we've experienced problems with the commutator risers breaking at their welded joints. The risers are about 14" long.
We have retrofitted one of the existing motors with a riser support ring. The risers are tied to the support ring in two places, equally spaced. We've also added a kink in each of the risers to allow some flex. We haven't had any problems since the retrofit.
The new armature will feature a support ring, but the maufacture isn't so sure that we need the kink in the risers. We think we want the kinked risers, but we aren't sure. The risers will likely cost us a little extra and will add lead time to the armature delivery.
Does anyone have any experiance with this subject? Any input would be appreciated.





RE: Commutator risers on 4000HP motor
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If we learn from our mistakes I'm getting a great education!
RE: Commutator risers on 4000HP motor
RE: Commutator risers on 4000HP motor
In my repair shop, we have rebuilt such commutators with long risers with additional braces but with no kink. These 2000 HP motors have been working fine for over 5 years now.
Do you want the kink for any specific reason ?
* Women are like the police. They can have all the evidence in the world and yet they still want a confession - Chris Rock *
RE: Commutator risers on 4000HP motor
RE: Commutator risers on 4000HP motor
RE: Commutator risers on 4000HP motor
Thats a pretty serious looking comutator, mind me asking what you use a 4000 HP DC motor for.
Regards
Roy
RE: Commutator risers on 4000HP motor