Generator AVR - Simulation Testing

You will need a 3 phase supply, dummy loads of similar resistance to your exiter coil and a potentiomer of the expected value (this is usually bridgeable)and so you can use the "on board" Voltage adjustment. As you adjust the potentiometer either side of the incomeing supply you will find the field current drop or rise.

Not a truly scientific method but that is how many gen manufacturers spec field tests.

regards

Chas

hey man , tnx for your time,

before when im not getting any answer, i tried to search thru internet. j found one website with a particular avr that shows simulation test, using light bulb as load resistance but this avr is for small capacity only,can i use this same set-up for high capacity avr?

in giving similar resistance as you mentioned, should i also consider the power ratimg? pls more info, tnx again

Hi Adsan,

the power of your gen set hasn't got anything to do with it but the resistance of the field coil has. Choose your bulb to have a resistance in the same area (+/- 50% should be close enough). I see you have three phase inputs. you will need a three phase supply for these.

Basically you are trying to make the AVR think it is in a gen set and as you alter the voltage setting either side of the supply it will alter the field current. If you can find a connection diagram for the AVR or the schematic for the gen it comes from you will see how to "dummy it up". If you're still not sure try posting a copy of the diagram on the site or send it to me via the personal mail feature of this site.

regards

chas

Chas,

I have the drawing and specs of the avr but i don't know how to attached it. Anyway you have already given me enough information, i have to try it by myself. Thanks again.

good day

adsan

Startng with the name of great Allah.

to check the avr there is a simple way,

Avr has two types single phase avr and three phase avr

1 check sigle phase avr there are four terminals

L + - N

L means phase

+ means DC positive

- means DC negative

N means neutral

attach 220v ore incoming voltage of single phase to avr with L & N

attach 200 watts bulb with +,- of avr

there is a variable on avr called voltage adjestment rotate it if bulb chage his light with rotating with variable then avr will be ok.if not the check there components like ic,capacitors,diode,scr bridge,etc.

thanks

Arshad awaisi