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Transcript 
September 1, 2008
Verifying Common-Phase 2 Switch Position
If you have taken an online test and the voltages didn’t come out right no matter how you connected the voltage probes, it might
be the position of the Common-Phase 2 switch.
Remember that the only time the switch should be in the Phase 2 position is when you are testing potential transformers configured as an open delta on greater than 600 VAC systems. Also, if the switch is on Phase 2, then in the EMAX test selection
menu, the Phase Configuration selection should be Phase-to-Phase.
So for accurate voltage readings, verify your Common-Phase 2 switch position.
You are invited to submit an Electric Motor Testing Tip of your own and receive a free PdMA mug or hat if we publish it! Contact
Lou at 813-621-6463 ext. 126 or [email protected].
Copyright 2008 PdMA Corporation. All rights reserved. The PdMA Tip of the Week is produced by PdMA. PdMA shall not be liable for any errors or delays in the
content, or for any actions taken in reliance thereon.
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