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Anonymous Poster

Relay selection

11/17/2009 1:23 AM

How do we select relays for a circuit. what are the basic requirements ??
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Tornado
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#1

Re: Relay selection

11/17/2009 1:59 AM

Unfortunately, this is a vastly open-ended question. At the very least you must determine the voltages, amperages, and frequencies of the currents to be switched by the relays involved. Then you must also select the control voltages and frequencies to be applied to the coils of said relays. Also you need to consider how many items are to be switched as a group, which will dictate how many poles the relays should have. All of which may vary from one relay to another.

Then you need to consult manufacturers' literature to find units that will match the requirements.

Etc......

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PWSlack
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#2

Re: Relay selection

11/17/2009 3:36 AM

Size is important. ()

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electricalexpert65
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#3

Re: Relay selection

11/17/2009 9:36 AM

There are 'n' number various types of relays in power system protection. Which relay you are talking about? Please be more specific.
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