Question about MGE Galaxy 3000 UPS System

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I have galaxy 3000 merlin heron 20 kva ups, the problem is fault on rectifier & it gave sound continuosly beep sound. thanks, if i can get sercuit diagram i love it

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Posted on Aug 23, 2010


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Rectifier internal fault

check scr,check diodes,check driver cards

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If the Galaxy 3000 is a 10 or 15 KVA UPS, you need 20 batteries of the 12v 20ah if the UPS has standard backup time.
If it is a 20 or 30 KVA, probably it needs 24 batteries.
Talking about the 20 or 30 KVA UPS, if the battery is 34ah, it uses 24 batteries; in any other case it uses 20 batteries.

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Galaxy 3000 30kVA showns battery charge fault.beacause battery?

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Sep 09, 2011 | MGE Galaxy 3000 UPS System

1 Answer

Hi! Ive got "cooling fault" on my galaxy 3000. Can


If this galaxy 3000 is of European Type ( that is having a radiator with coolant) , then after following proper BYPASS/Shutdown procedures, you could level the coolant in the radiator. You may require the tool kit that the supplier normally supply for this type of job.Generally the design was such that no evaporation could occur, however at times the top up is required. It may be as little as 20 (millilitre) Please check also the cooling fan just below the capacitor assembly. I hope this will help

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How many watts would you get from a generator rated at 11hp and 5.8 kva. thanks

kva = kilo-volt-amps

watts = volts x amps = va

Therefore, 5.8kva = 5800 watts

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1 Answer

Ups temprature fault

From what info you gave me. It sounds to me like it is either too small for the load, or it is in a confined space where heat is building up (UPS has to be outside of a desk office, etc.) or the rectifier is going bad and heating up. I would check to see if it does it by hooking up a small load to it like a radio or something, and if it is in the open, not overloaded then rectifier is bad,I see it alot. I am a Master Electrician and have worked on many UPSs'. Remember that if you keep a UPS loaded to it's full potential (which you shouldn't do) it will get hot. The rule is to only load it up to 80% of it's rating and you will be fine. To find out how many amps it will handle you simply devide the VA of the UPS by the supply voltage. Example: 1200va UPS supplied by 120v. is good for 10 amps. 1200/120 = 12 amps, then it is wise to add 25% more to the watts or amps when sizing them. Also, if it has a cooling fan make sure it isn't blocked by lint and is working, if it isn't working it will get hot fast. Good luck!

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mge galaxy 3000 battery circuit breaker shut off when normal power shut off too.plz help !!!!!!

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