Potential Relay Troubleshooting

Potential starting relays consist of a high resistance coil and a set of normally closed contacts. Remember short out the start cap used above. I show the.

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Operating And Troubleshooting Potential Or Voltage Relays 2018 03 05 Achrnews

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Potential relay troubleshooting.

It s probably a bad potential relay. The relay coil is across terminals 2 and 5 while the relay contacts are across terminals 1 and 2. The resistance should read close to zero since there are normally closed contacts between terminals 1 and 2. After taking all of the connecting wires off of the potential relay measure the resistance across the 1 and 2 terminals.

Knowing the sequence of operation for this type of starting relay can help you diagnose confirm or rule out certain service problems. Whenever possible the model number on the old relay should be used when ordering a new relay. Troubleshooting of a potential relay can be done with an ohmmeter. The relay does the same thing.

Potential relay operation and testing. When used with a run capacitor a 15 000 ohm to 18 000 ohm 2 w bleed resistor should be attached to the start capacitor to prevent possible arcing when the relay contacts open. My paperback and e book. The coil is wired between terminals 2 and 5 with the contacts between terminals 1 and 2.

A simple ohmmeter is all that is needed to troubleshoot a potential relay. The above procedure simply mimics the action of the potential relay. A simple ohmmeter is all that is needed to troubleshoot a potential relay. The start cap is momentarily applied to the circuit then quickly disengaged.

I ve used this procedure many times. Replacement relays can be cross referenced for different manufacturers using convenient tables via the internet. This video explains the terminal arrangement of a potential relay how to wire it up and how it works.