Question about MGE Galaxy 3000 UPS System

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Encountered "Internal Communication Fault"

We from Civil Aviation Authority of the Philippines (CAAP) Caticlan Airport had MGE Galaxy 3000 10KVA UPS System with a S/N 13299-2. It was Installed on 2003. We replaced battery, for about a year, it function normally but after, on 2008 we encountered " Internal Communication" fault alarm. We do tried again change the battery but same manifestation of trouble occur. When we tried to turn on the UPS on normal, at first it will function normally. Load protected indicate on display but after, for about 1 hour it will alarm. When Power failure/interruption occur the system could not do it function and our equipments will automatically down. We are asking for an advice/recommendation about this problem. Thank you and more power.

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Posted on Jan 02, 2017

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SOURCE: We at CAAP Davao Philippines have a MGE Galaxy

On the Galaxy display you could see what is the remaining battery life time as calculated by the software. Normally after you replaced the batteries you are supposed to reset this counter using specific software by the manufacturer. According to your information you have replaced the batteries 3 times in 5 years period. This is not normal. Nevertheless since the last replacement in 2008 it appears that the battery are now reaching the end life, which is generally 3-5 years life expectancy.

I would review the following of the assumption that the UPS is fully operational and the charging system is working.

1. Do a load test or a battery impedance test to verify the batteries are good
2. I would look at the battery life time specification, whether it is 3-5 years, 5-7 years ect.
3. Check the room temperature, every 10 degrees Celcius above 25 deg reduces battery life time by half
4. Check the number of power failures/ duration of these power failures and if possible what load were on the UPS at the time of the power failures.
I hope this will help. If all verifications are to specifications, then most likely it is a software problem

Posted on Apr 01, 2011

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We at CAAP Davao Philippines have a MGE Galaxy 3000 10KVa UPS with serial no. 13299-4. It was installed last 2003. We had three times replaced its batteries over the period of years, the latest was 2008....


On the Galaxy display you could see what is the remaining battery life time as calculated by the software. Normally after you replaced the batteries you are supposed to reset this counter using specific software by the manufacturer. According to your information you have replaced the batteries 3 times in 5 years period. This is not normal. Nevertheless since the last replacement in 2008 it appears that the battery are now reaching the end life, which is generally 3-5 years life expectancy.

I would review the following of the assumption that the UPS is fully operational and the charging system is working.

1. Do a load test or a battery impedance test to verify the batteries are good
2. I would look at the battery life time specification, whether it is 3-5 years, 5-7 years ect.
3. Check the room temperature, every 10 degrees Celcius above 25 deg reduces battery life time by half
4. Check the number of power failures/ duration of these power failures and if possible what load were on the UPS at the time of the power failures.
I hope this will help. If all verifications are to specifications, then most likely it is a software problem

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Seems like you got everything you need. You have got the requirements and as an additional bonus you already know which programming software you want or need to use.

Should you need to know more about navigation etc. the best would be to use a good search engine and just search for keywords like aviation, navigation, airport, airstrip, and CAA also helps a lot (Civil Aviation Authority)

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