generator hunting

[gakenyatswe]

I have problem of generator 2500KVA hunting on load, when not on load is not hunting.
Few parts;
Woodward DSLC -2
UG-Actuator Woodward part number A8251-724
2301A Speed Control

 

[waross]

Fuel filter needs changing??
Fuel too light a grade??
Overloaded??
Air leak in the fuel line?

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[ScottyUK]

Governor gain too high?
Play in the governor linkage?

 

[waross]

Sticktion in the governor or the actuator linkage?

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[catserveng]

Can you provide some details about your unit and controls? A 2301A and a DSLC2 sounds like a recent retrofit. is that the case? Is this a problem with a new or recently changed unit, or a new problem on an existing unit? Since you have a DSLC2 I'm guessing you are paralleled to something else, correct? What?

Maybe you can address the questions above and add some more details of your unit and system, then you can likely get better answers.

Mike L.

 

[waross]

I have had generators hunting from:
Sticktion in the actuator.
Bad AVR.
Fuel starvation.
Improperly adjusted stability adjustment on the AVR.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[X49]

I've had a generator hunt while starting large motors with soft starters. The solution was to lower the governor gain setting on the generator controller.