P.O. Box 563
East Longmeadow, MA 01028
(Toll Free) 800-253-2133 or 888-HEC-CORP
The Hampden Model H-PRD-1 demonstrates the function of a potential relay in the starting of a 240V compressor. A potentiometer is used to simulate the increasing speed of the motor during start-up. Pilot lights indicate when the start and run windings and the start and run capacitors are energized. Lamp brightness varies during the start period to simulate voltage variation. Four test jacks permit realistic voltage measurements at the potential relay. Input power is single-phase AC through a GFI circuit breaker.
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