Potential Relay Troubleshooting

The relay coil is across terminals 2 and 5 while the relay contacts are across terminals 1 and 2. I show the. The coil is wired between terminals 2 and 5 with the contacts between terminals 1 and 2.

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Operating And Troubleshooting Potential Or Voltage Relays 2018 03 05 Achrnews

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Troubleshooting of a potential relay can be done with an ohmmeter.

Potential relay troubleshooting.

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. I ve used this procedure many times. The above procedure simply mimics the action of the potential relay. All you have to do is touch the ends of the.

A simple ohmmeter is all that is needed to troubleshoot a potential relay. Knowing the sequence of operation for this type of starting relay can help you diagnose confirm or rule out certain service problems. Potential starting relays consist of a high resistance coil and a set of normally closed contacts. The relay does the same thing.

It s probably a bad potential relay. Replacement relays can be cross referenced for different manufacturers using convenient tables via the internet. My paperback and e book. After taking all of the connecting wires off of the potential relay measure the resistance across the 1 and 2 terminals.

Remember short out the start cap used above. Whenever possible the model number on the old relay should be used when ordering a new relay. A simple ohmmeter is all that is needed to troubleshoot a potential relay. Potential relay operation and testing.

The start cap is momentarily applied to the circuit then quickly disengaged. This video explains the terminal arrangement of a potential relay how to wire it up and how it works. The resistance should read close to zero since there are normally closed contacts between terminals 1 and 2.