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jakbeuk
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Safety - ESD - Inspect all things, keep the good things safe! New Zealand - Member - PalmerstonNorth -hub of the Manawatu.

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Electrical Switchgear Ratings

03/04/2009 8:04 PM

What is the difference between AC 21, AC 22 and AC 23 ratings when looking at contactors and switchgear coming from Germany?

Any help is appreciated.

Jakbeuk

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Jimh77
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#1

Re: Electrical switchgear ratings

03/04/2009 11:57 PM

Check out http://support.automationdirect.com/docs/capacitychart_a.pdf

to start, this is a basic explanation. If you need more info, you will need to look deeper into IEC low voltage switchgear.

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MarkTheHandyman
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Canada - Member - Toronto, Ontario (South Parkdale On The Lakeshore) Engineering Fields - Marine Engineering - Great Lakes School Of Marine Technology (Owen Sound and Port Colbourne) Technical Fields - Architecture - Private Practice 1976-1990 Technical Fields - Education - Toronto Teachers' College 1971 Technical Fields - Marketing/Advertising - Founding Member Hobbies - Hunting - Founding Member Hobbies - Target Shooting - Founding Member

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#3
In reply to #1

Re: Electrical switchgear ratings

03/06/2009 4:21 AM

Hi, Jimh77!

Bingo. GA.

Mark
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jakbeuk
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Safety - ESD - Inspect all things, keep the good things safe! New Zealand - Member - PalmerstonNorth -hub of the Manawatu.

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#8
In reply to #1

Re: Electrical switchgear ratings

03/17/2009 12:35 AM

Thanks for your help, its excellent!

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skippyaust
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#2

Re: Electrical Switchgear Ratings

03/06/2009 12:50 AM

AC ratings are utilisation factors. AC 2 is slip-ring motor contactor. Subsequent numbers relate as 1 to PF, 2 min time etc Refer to AS/NZ 60947 or therabouts Thhis is acopy of the IEC standards
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ronhu
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Engineering Fields - Power Engineering - New Member

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#4

Re: Electrical Switchgear Ratings

03/11/2009 1:50 AM

my friends , could you introduce some MV switchgear manufacturer to me ?
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Jimh77
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#5
In reply to #4

Re: Electrical Switchgear Ratings

03/11/2009 2:05 AM

Siemens and Allen Bradley, GE and Square D are the ones I've worked on.

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ronhu
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#6

Re: Electrical Switchgear Ratings

03/11/2009 2:24 AM

i am sorry to you are misunderstand me ,i need some MV switchgear manufacturer location in indian ,hehe ,thanks
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Jimh77
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#7
In reply to #6

Re: Electrical Switchgear Ratings

03/11/2009 2:42 AM

Not a problem,

All of these companies are world wide. Everything is Global now. Actually AB has been for about 30 years or more, Siemens I believe is rooted in Germany, I could be wrong on that though. GE is local, but Global and Schneider took over Sq D several years ago which are also Global. I am sure there are others, The ones I named are the units I have worked on and or sold when I was an AB distributor.

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jakbeuk (1); Jimh77 (3); MarkTheHandyman (1); ronhu (2); skippyaust (1)

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