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Generator and UPS issues.

stevebarnes35
on
Medium Priority
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Last Modified: 2013-12-11
I manage a company that offers Highspeed Fixed Wireless internet in very Rural areas.  
Our towers that we bradcast off of are very remote towes with direct AC to DC converters.  
On the AC we have basic APC or TtrippLite UPS that goes to a AC-DC converter.
Some have battery backup on the DC as well.  These units pull Very Little Power.So little that a
550 Vah Batter backup will keep a tower up for 45 Min.  There are times when we have an
 Ice Storm  or serious power outage that we have to use a portable generator.  
We have just small Honda generator.
If we put it infront of the UPS the ups Clicks off and on and will not opperate normally.  
If we take the UPS out of the picture the equipment works with no issue for as long as we
Gas in the generator.  I assume this is the result of a square wave coming out of the generator.

If I use a Line Conditioner between the Generator and the UPS with that help the UPS to stabalize?
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Paul MacDonaldDirector, Information Systems
CERTIFIED EXPERT

Commented:
It seems likely a line conditioner would help.  Frankly, I'm surprised a Honda generator doesn't put out cleaner power.

Another possibility would be to generate DC and bypass the UPS altogether.  That also reduces some of the power losses.

Commented:
you can verify the input sourece specifications (requirment) in the UPS and the output specifications on Honda Generator, maybe it is Hz issue (50-60)
CERTIFIED EXPERT
Distinguished Expert 2019

Commented:
it looks like you need a generator withAVR, or DAVR :  http://www.hondapowerequipment.com/products/generators/content.aspx?asset=gg_choose
Top Expert 2009

Commented:
since all your equipments are taking up low voltage DC, you can go in for a hybrid grid-tie solar based system.

the solar panels are the primary source of power and keeps the battery charged.
if battery level falls below a certain pre-determined level (say 60%) - power is taken from mains to keep the batteries in the proper charge level.
on the event of mains failure and low batter level, a DC generator will kick in and keep everything nice and smooth.
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Distinguished Expert 2019

Commented:
any feedback steve?

Author

Commented:
Sorry, the email address I setup for this account was not going anywhere.  

I am working at changing teh towers all over to a Solar DC power supply with a DC battery backup.  However, none of the answered the question of:  If I use a Line Conditioner between the Generator and the UPS with that help the UPS to stabalize?

Author

Commented:
I had email issues.
Paul MacDonaldDirector, Information Systems
CERTIFIED EXPERT

Commented:
I'd expect the UPS to act as a line stabilizer itself.  Power peaks and drops should be normalized automatically by a good UPS.  That's not to say a line conditioner will hurt anything, but you'll have the overhead of having to power it.

Author

Commented:
I think the issue is that many of the lower end UPS units <$150 are just backups and they require a good clean line power to protect themselves.  Many of the more expensive units have a switch that lowers their sensativity.  I did not know that when I invested in many of these units.  I am just not sure what a line conditioner really does and if I can buy one for now and put it with the generator to take onsite in the event of a power outage that is allot cheeper then buying 15 $300 UPS's.
Paul MacDonaldDirector, Information Systems
CERTIFIED EXPERT

Commented:
You're right about that, and as a fallback position, it's not a bad way to go.
Top Expert 2009
Commented:
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Distinguished Expert 2019

Commented:
or a quality generator, like i posted
Top Expert 2009

Commented:
you are welcome!

if you need any more clarifications, dont hesitate to post a follow-up question.
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