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All our our Panasonic Split Type air conditioners in our plant do not operate when power source is taken from a power generator set but the Carrier brands operates well. What could be the reason for this problem?

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  • Panasonic Master
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The genset power most likely is 220V line to ground power. You utility power is 220V line to line but uses 2ea 110 VAC line inputs to get that 220VAC. The only way to correct this is to reconfigure your generator connection to 220V line to line IF possible. Some generators that only have a 220V output. Re-configuration is not possible

Measure power at the breaker on gen power as the source and again with the utility as the source. You will see the difference in voltages. Utility power.... each side of the Breaker output to ground = 110V across the 2 terminals 220V

Gen power one side of the breaker output = 220V other side = ZERO.

You can make it work but it would take some heavy duty relays in a power sub paenl so that when the generator is running one side of the power is 220V and the other side is Ground. Once utility power is restored the relays would disengage and power would again be 220 VAC line to line.

You will need a licensed electrician and a PERMIT to install a relay panel such as I mentioned above. Improper wiring of the power relay swtitching panel can cause major power problems in any given installation and trip the MAIN PWR breaker.

Thanks for choosing FixYa.

Kelly

Posted on Sep 05, 2010

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