motor control center design

[carmina123]

Hi
Can anyone guide me for Motor control center design good refrence .I know cable CB motor Vfd stuff but Motor control center can any one help .

CHeers

 

[davidbeach]

Start with the catalog of your favorite gear manufacturer. Probably would also help if you'd state where you are. Standards and practices vary from place to place.

 

[carmina123]

my freq is 60

 

[davidbeach]

Well, that's nice, but nearly useless information.

 

[carmina123]

Dear it is NEC

 

[waross]

NEC, slowly narrowing it down.
NEC National Electrical Code
NEC Nippon Electric Company, Ltd
Somewhere between Alaska and Western Japan. Or somewhere else.
This has been suggested but look at:

http://www.ab.com/mcc/nema/

And you may try:

http://www.ab.com/software/pcp/

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

 

[carmina123]

Any good suggestions

 

[waross]

I share your pain, David.

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

 

[jraef]

Judging from your apparent use of English as a second language, we can only assume you are not in North America. If you are in another country and want to send equipment to North America but do not know where to go for MCCs that are acceptable here, I suggest contacting some of the big multinationals availbe to you in your area such as Siemens or Schneider. Allen Bradley, GE and Eaton / Cutler-hammer are North American based mfrs., but depending on where you are may be difficult to get. ABB does not have NEMA style MCCs.

If your idea was to make your own and you wanted to know about design specifications, you need to purchase a copy of NEMA ICS (Industrial Control Systems) and UL845. You will find however that most likely it will not be worth your while to do it that way. Most of the above mfrs sell MCCs at a loss in order to get users to standardize on their components so they can get the aftermarket sales. New entries into that market have to contend with extremely low prices and find it a waste of time. ABB, who is second only to Siemens in size worldwide, abandoned their NEMA MCC efforts last year.


"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
For the best use of Eng-Tips, please click here -> faq731-376

 

[carmina123]

Lovely Dear I am based in Brazil but We have IEC and NEC both
English is not limitation for me I try to learn it as much as I can as you can understand .
I worked for electrical panl boards a lot and design them max 52 ways I did .But I am trying to expand my experince in MCC as well but there is not much I found .In the feild of MCC there are certain needs for loads and there are certain specific designs which varies company to company .What I was thinking to compile these on one then upload here so that it could be helpful to anyone .
I had a chance to look at siemens and ABB they have fixed patterns for MCCs .
Any way My freq is 60 we use 220/127

 

[Skogsgurra]

Dear gorgeous lovely carmina. We are certainly looking forward with great interest to that very valuable piece of information that you are compiling for us.

Gunnar Englund

http://www.gke.org

--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[carmina123]

Shall we discuss MCC design

 

[rbulsara]

Go ahead!

Rafiq Bulsara

http://www.srengineersct.com

 

[rbulsara]

Start with listing the 52 ways you designed the panelboards. We can build from there.

Rafiq Bulsara

http://www.srengineersct.com

 

[carmina123]

what do you mean by start the electrical panels ways are always multiple of 3 and 52 ways has 2 spares

 

[waross]

Interesting.
Nema panels under the National Electric Code or the Canadian Electrical Code are often multiples of 6 with a maximum of 42 ccts but there are exceptions especially for single phase panels.

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

 

[jraef]

Am I the only one who is lost in confusion here?

"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
For the best use of Eng-Tips, please click here -> faq731-376

 

[Skogsgurra]

Jeff

Confusion is the first step on the road to knowledge.

Gunnar Englund

http://www.gke.org

--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[carmina123]

when we confuse we learn

 

[carmina123]

just to amazed you all there one of my egyptian friend told mein Saudi Arabia jeddah airport they made a world record of 92--96 ways on the special request of their HIGLY QUALIFIED MANAGER when the engineers asked him it will be hell to transport repair maintain he said IT IS MY STANDARD