Tuesday, December 1, 2009

Back up Generators and Irrigular power?

Sometimes Back up Generators create serious problems for IT professionals. Sometimes the voltage drops so low and the current is so high that power supply PC boards actually burn up do to massive current.



What products or product deals with this issue specifically. If the voltage drops so low or is too high, it kills the power, and not allow it through. When the power becomes stable it allows the power to go through. What is this product?



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you should plug anything that sensitive into a ups.



If it a big load feed it from some kind of drop out relay controller with a surge suppressor, but if you have anything that big and sensitive you should have electricians and technicians to maintain it.



They make over under voltage drop out controllers you can hook up they are pretty simple we had a bunch of them when i was on a ship. They where built into the distribution system so i don't know who would sell them. I would say contract and engineering firm or electrical company to design and upgrade your electrical system.



If your generators are dropping off that much either you are seriously overloading them or they are not maintained well. In which case you should either put less circuits on them or get them fixed.



still seriously put your computers and what not on ups.



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First of all the sensitive equipment should be plugged into or fed from a UPS(uninterrupted power supply).Secondly your generator is not maintained very well if you are getting that much of a curve in your amp draw and voltage supply.I work at a mental health facility and we have this equipment in place for our protection and works great,but we also maintain and test our generators according to JAHCO standards.The UPS system keeps the power supply at a constant voltage no matter who is giving you power(utility or generator).
The product is called a stabilizer transformer. You can get it in 120 volt ot 220 volt. If it's 120 volt, the input can drop say to 70 or 80 volts and the output still stays at 120 volts, or the input can go to 200 and you still have 120 output. Also have your generator checked to see if it is turning 3,600 R P M under load. The load on a generator acts like a brake trying to slow it down, the governor opens up to maintain the speed.
yea, sounds like your generator is a piece of crap. sorry to break it to you.



it may be a good idea to have it serviced or replaced.



however, i have read about a company that builds and sells power filters. there was a story about a company geting wild swings in interference in there sensitive equipment. it ended up that they had flucuations in there incoming power(dirty power) the voltage would swing up or down 15 volts or the phases would get these strange drops and spikes(something about the look of it on an occiliscope) the filter was to be installed on your incoming power suply from your transformer(about as big as a large transformer as well) it would take in the power and stabalize it in order to keep a uniform optimal level of quality. it said that it was important to get one that was properly sized for your demand because it would be hard for the filter if it was under loaded or over loaded. search around for it on the internet.
Do some research into flywheel UPS's, if your load is large and the transients are of relatively short duration.

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