GENERATOR LOADING 2

[nightfox1925]

Up to what % of full load I may safely load my generator if my generator is continuously rated? prime rated?

GO PLACIDLY, AMIDST THE NOISE AND HASTE-Desiderata

 

[Scrummer4]

You need to look at the the alternator rating (kVA), and the engine rating (kW). Alternators are traditionally rated at 0.8 PF, so we have a relationship between kW and kVA.
You may have to deduct the power needed to drive the radiator fan from the engine power (kW).
However, it also depends on the type of load. Straight linear loads, you should be able to use up to 100 %. Rectifier or UPS loading is a different story. This type of non-linear load causes voltage distortion, which can cause problems for the load, and for the alternator AVR, of which there are various types, some of which are more suited to non-linear loads than others.
There are many other relevant points, overload, motor starting, voltage dips, effect of one load on another, etc., etc.
Is the room adequately cooled ?
Have you asked the genset supplier ?

 

[waross]

Check the manufacturers specs. You may find something like this:
Standby, no over load is allowed.
Prime, 1 hour over load in 12 hours is allowed.
However the same basic engine/alternator combination may be rated either as 100KW prime or 110kw standby.
The prime rated engine may have an oil cooler added and possibly a larger oil sump.
It is not always obvious in the brochures that the 100kw prime set and the 110KW standby set use the same basic engine and alternator.
respectfully

 

[cuky2000]

Check the generator capability curve provided in the documentation provided by the manufacturer or study performed for the specific unit.

Beware that there are other external factors such as stability limits, or line overloading limits that may impose other restriction on the generator output.

The enclose link could provide a general idea in this topic.

http://cuky2000.250free.com/Gen_Reactive_Capability_Limits_2.jpg

 

[waross]

Is this a diesel generator?
respectfully

 

[nightfox1925]

waross, I have one Diesel Generator rated at 600kW, 480VAC and a Steam Turbine Generator 3MW rated at 480VAC, 3Phase, 60Hz.

Thanks cuky2000 for the link and the rest of the guys.

GO PLACIDLY, AMIDST THE NOISE AND HASTE-Desiderata

 

[waross]

Here is some information that may be useful.
F. G. Wilson is one of the largest manufacturers of diesel gen-sets in the world.
As an example of one of my previous posts, F. G. Wilson manufactures a set using a Perkins 1103A-33G1 engine and a model LL1014Q alternator.
Generating Set Model P27P1 or P30E1
Ratings at power factor. 0.8

Ratings Definitions
Prime Power - Model P27P1 34.0 kVA 24.0 kW
These ratings are applicable for supplying continuous electrical power (at variable load) in lieu of commercially purchased power. There is no limitation to the annual hours of operation and this model can supply 10% overload power for 1 hour in 12 hours.

Standby Power - Model P30E1 27.2 kW 34.0 kVA
These ratings are applicable for supplying continuous electrical power (at variable load) in the event of a utility power failure. No overload is permitted on these ratings. The alternator on this model is peak continuous rated (as defined in ISO 8528-3).

See the brochure at

http://pdf.fgwilsonmiami.com/p30e1.pdf

F. G. Wilson manufactured the Olympian branded sets for Caterpillar. Caterpillar purchased F.G. Wilson a few years ago.
I am sorry but I cannot say what ratings will apply to your steam set.
respectfully