How To Test A Potential Relay Part 2 Youtube Testing a potential relay used to start a hermetic compressor. This is the wiring of the potential relay. this video is part of the heating and cooling series of training videos made to accompany my websites: grayco.
Wiring Diagram For Potential Relay Wiring Flow Line The potential relay is normally closed, and it opens when a sufficient pickup voltage is present between the 5 and 2 terminals on the relay. this pickup voltage is the potential (voltage) that exists in the start winding when a motor gets above about 75% running speed. it is generated in the start winding by the motor itself, not the capacitor. In this hvacr training video, i go over how the potential relay works and how to troubleshoot it! i show the wiring and contacts at 5, 2, and 1. i explain ho. November 3, 2002. a simple ohmmeter is all that is needed to troubleshoot a potential relay. after taking all of the connecting wires off of the potential relay, measure the resistance across the 1 and 2 terminals. the resistance should read close to zero, since there are normally closed contacts between terminals 1 and 2. Operating and troubleshooting potential or voltage relays. by john tomczyk. figure 1: the potential relay consists of a very high resistance coil and a set of normally closed contacts encased in a small plastic housing. figure 2: the relay coil is wired between contacts 2 and 5, while the normally closed contacts are wired between contacts 1 and 2.
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