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mshankar.85
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Join Date: Sep 2008
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POTENTIAL FREE CONTACT

10/29/2008 2:18 AM

Could anyone explain me the concept of POTENTIAL FREE CONTACT????????

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user-deleted-1105
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#1

Re: POTENTIAL FREE CONTACT

10/29/2008 4:00 AM

It's a pair of contacts with nothing connected.

E.G An alarm circuit in a piece of equipment turns on a relay...the relay contacts are the 'potential free contacts' which go to a n external connector and are are then available to control some external device, say a light, buzzer valve etc.
This is commonly used to overcome interfacing problems which may occur if a Transistor switched output was provided.
It provides complete isolation between the equipment and the external device, so that they don't inadvertantly damage eachother due to incorrect connection.

Del

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Sparkstation
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New Zealand - Member - Interested in everything- see my Profile please APIX Pilot Plant Design Project - Member - Member Engineering Fields - Electrical Engineering - Member Engineering Fields - Power Engineering - Member Engineering Fields - Civil Engineering - Member Hobbies - Musician - Autoharp and Harmonica Hobbies - Hunting - Member Hobbies - Fishing - Member

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#2
In reply to #1

Re: POTENTIAL FREE CONTACT

10/29/2008 5:57 AM

Hello Del the cat

from me

Kind Regards....

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capblanc
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#3

Re: POTENTIAL FREE CONTACT

11/01/2008 4:14 AM

Hi,

Putting what Del has said more simply, Potential free contacts have no electrical connection to the equipment that is operating them as distinct to a contact that connects to either 0V or a supply voltage from the equipment operating it.

regards

Chas

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