MCC maintenance cecklist 1

[Sofistioelevib]

Could you share your practical monthly (or more) check list about maintenance of your cabinet?

Regards

 

[waross]

If it works don't fix it.
You can cause more problems than you solve by over maintenance.
Keep extending your schedule, ie: One month, no problem, go to two months, then three months then six months, then a year.
In one plant we had a dust problem. Experience showed that some motors should be blown free of sawdust every weekend. All brushes should be shaken free of dust every weekend.
We had a habit of running a hand over the side of any PF capacitor banks that we passed. If a cell is cooler than the rst, find out why.
Watch for dust build-up. Depending on the severity schedule a cleaning of cabinets including bus bars every year or two.
Some plants are quite clean and never have to clean out dust or dirt.
Less is better.
A disclaimer; Your insurance company may have requirements and/or suggestions. Check with them.

Bill
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"Why not the best?"
Jimmy Carter

 

[jraef]

Where are you located? The term “MCC” means different things in different parts of the world. Here in North America, “maintenance tasks” for what we call MCCs (NEMA Standard) is at best, annual and in some cases, things like factory bus bar connections are now considered “permanent” and you are NOT supposed to check or tighten them. Monthly tasks on other things would be considered excessive.

But in other parts of the world, I’ve seen the term “MCC” used to just refer to a collection of loose controls in a cabinet.


" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden

 

[Strong]

Infrared thermography surveys are typically conducted annually or prior to major plant outage (open door or thru special windows). I have scanned closed panels with airborne ultrasound to detect electrical and mechanical faults. Just my 1-cent contribution (less than 2-cents).

Walt

 

[waross]

I hope that you have noticed, monthly is too frequent and may do more harm than good.
Check period should be annually or less frequent.
Thermographic surveys are good. The first one within the first year. If any cells are disturbed, install a new bucket, reconnect outgoing feeders, or anything more than looking without touching, do a thermograph annually.
If nothing has been disturbed, every two or three years.

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