Generator Question

[shooter1]

I'm working in Baghdad, Iraq. All of our steady power is produced by generator. We have everything from 200KW units to 1.4 meg gen. sets. Some of the gen. sets are rated at 27 degrees celsius which is 80.6 degrees fahrenheit. Others are rated correctly at 50 degrees celsius. Our temps. are ranging from 105 to 110 daily. Most gen. sets are loaded to 60%.

Question? Is there a calculation I can use to properly load our gen. sets depending on the temp. rating.
Example: I have a 200KW gen. set rated at 27 degrees celsius. How many KW do I lose for every degree celsius over nameplate rating?

 

[bdarnell]

First of all, hat's off to you for what you do.

I found an article HERE that might give you some of the information you are looking for.

Good luck. Keep your :shock: head down

 

[DGrant041]

shooter1-

God bless you guys (and gals) for putting yourself in harms way.

I posed a similar question to this forum not long ago with only one reply. You can find that post here. Maybe this information will help.

It's been my experience that the generator will not be your most limiting factor. The engine will tend to drop down to a slower speed as it heats up to sortof unload itself. It doesn't sound like you are near this point yet but its something to watch for later.

Also, if they rated the distribution system at 27C you might need to check to see what size & temp. rating the cables are inside. It sounds like you're running these 24/7 so you may not have a chance to do that.

If you need some additional assistance, send me a private message (PM).

Take care out there and hope to see you back here state-side soon. 8)

 

[tshea]

SHOOTER1 Thank-you for the job you and everyone else is doing. I support you 100%.

If you have military generators check the TM or FM. It's been quite a few years since I worked with military gensets. I do recall that they were capable of more than the nameplate rating for short periods of time.

We loaded tested a 200kW MEPS unit at 250+kW for over an hour with no problems.

I ran a 60kW unit in the field for 5 days at greater than full load--about 75kW with surges to 90kW.

We performed maintenance on them daily per TM.