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Short 15 - Testing Capacitors, A Practical Approach
In this short podcast episode, Bryan Orr discusses the best practice methods for testing run capacitors in the field.
We understand the capacitor to be a voltage storage device. We can benefit from comparing the capacitor to a balloon that inflates and deflates with electrons as the alternating current changes (60 times per second). A capacitor causes a phase shift and allows there to be current on the start winding. So, when a run capacitor fails, you won't have current on the start winding.
The old-fashioned way of testing a run capacitor was to take an ohmmeter and charge/discharge the…
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