Question about MGE UPS Galaxy 3000 UPS System

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While attending to this unit I discovered that load supported through yellow phase had no power on static bypass and after resetting the unit it kept switching off after 10 minutes. What could be the problem?

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What caused the UPS to transfer to Bypass? could be inverter fault, would you please check your battery set, maybe the input power is outside the tolerance and causing UPS to discharge the battery set , as well when battery set reaches the end of discharge it is causing the UPS to transfer to bypass and there is something missing on the input yellow Phase.
if the above is not true check the load type that is connected to the UPS output that is causing UPS to switch off in 10 minutes time.

Posted on May 12, 2014

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What`s the nominal voltage of this unit?? 208v?
what voltage are you having at the input of the ups?
are there any alarms shown at the screen?
what LED`s are lit?

Posted on May 08, 2014


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Posted on Jan 02, 2017

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SOURCE: case 1: 220 V, 50Hz applied

Did you measure with a true RMS meter?
If yes,the results are normal,but your ground connection is not very good.
The case has 110v potential (exactly half of the input&output 220v) because of the input and output capacitor filters (a capacitor is conectet from phase to casis and an other from neutral to chasis,thus resulting a 1/2 voltage divider). Because of this,the earthing is necessary.

Posted on Jan 16, 2011

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SOURCE: when switched the bypass to

You didnt start the UPS correctly because the static switch was not on. The Static Switch has to be on to get a clean transfer of power. Check your static switch

Posted on Oct 27, 2011

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