Looking for a vendor who can supply Westinghouse MCC bucket

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Shahzad

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Electrical Engineer
I have a MCC at our plant in BC, Canada. The MCC is by Westing house. Currently, NEMA size 3 starter is feeding 30 HP motor. We are planning to replace the motor with 60 HP. I have following questions.

1- Do I need to go with Size 4 starter to feed 60 HP motor, or my existing size 3 starter would work? Any idea what is maximum size motor I could feed from size 3?
2- Since, westing house is no longer around, does anyone has any idea where I can get a spare SIZE 4 starter bucket for my MCC? If u happen to know any vendor or have contact in Canada, please share it with me.
 
don_resqcapt19 said:
Eaton bought Westinghouse in the early 90s and they should be able to make buckets for the old Westinghouse MCC. They will not be cheap, as they are "custom made" to order.
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They do. Eaton has an entire program devoted to what they refer to as “Aftermarket MCC buckets”. The innards are new Eaton parts, but they build and list them with the frames that fit older obsolete MCCs, including Westinghouse al the way back to the beginning.

 
Jraef said:
They do. Eaton has an entire program devoted to what they refer to as “Aftermarket MCC buckets”. The innards are new Eaton parts, but they build and list them with the frames that fit older obsolete MCCs, including Westinghouse al the way back to the beginning.

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Yes, and I had a quote for an GE 7700 bucket from Eaton that was actually cheaper than the one from GE. In both cases, they are custom buckets as the 7700 is obsolete.
 
don_resqcapt19 said:
Yes, and I had a quote for an GE 7700 bucket from Eaton that was actually cheaper than the one from GE. In both cases, they are custom buckets as the 7700 is obsolete.
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The GE 7700 series was a good MCC. Had 12 of them in a local plant that we maintained for years.

We eventually changed the all out to Allen Bradley device net MCC's

Sent from my moto e using Tapatalk
 
masterinbama said:
The GE 7700 series was a good MCC. Had 12 of them in a local plant that we maintained for years.

We eventually changed the all out to Allen Bradley device net MCC's

Sent from my moto e using Tapatalk
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The plant I still do some work at has a lot of 7700 and some 8000 series MCCs in use. The 7700s were installed in 1964. We have had some issue with arcing at the bus connection between the bucket and the vertical bus for Size 3 and 4 starters, but the bus can be replaced.
One of the things I liked is when they moved on the 8000 series, all of the parts were interchangeable with the 7700.
 
Just had to replace 3 buckets in an A-B MCC built in 1979 (that ironically I had installed back then when I was a pup plant electrician at that facility). A-B has not changed their structure design since day 1 so I just got new buckets and they plugged right in.

Actually, I just had an entire section made with the buckets in it that I wanted and scrapped the steel and busbars, it was cheaper than buying replacement buckets one at a time.
 
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