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Q.

What is the difference between AC1 and AC3 duty switchgears?

Asked by meenu aneja, 21 Oct '08 09:53 am
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Answers (3)

1.

Duty factor
Answered by dhanendra kumar jain, 22 Oct '08 10:22 am

 
  
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2.

See it is related to contactors. AC1 duty of switchgear is used where operation is not so frequent. means whaen the switching operation is once or twice a day. it means there are lesser wear and tear of the contacts. AC3 duty involves where the ON/OFF operation of the contactor is more than normal say STARTERS. There is AC4 duty of switchgear too. It is generally used with reverse starater RDOL. where operations are more frequent and contact tips are replaced sooner.
Answered by ankit shivam, 21 Oct '08 09:58 am

 
  
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3.

Same as between kajol and mallika
Answered by Andhaa Kanoon, 21 Oct '08 09:54 am

 
  
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