about avr sx440

What about some technical details?

Is that too much to ask???????????????????????????????

3

dear sir.

• this the technical details you ashked.
• generator rating 500kva
• stamford alternator w/sx 440 avr
• doosan daewoo engine
• 3phase w/ 1000a abb cb.
• w/ governor controller for the speed of the engine.
• and we have low voltge pannel used for syncronization porposed now sir my question to you are?
1. how to synchronise the 7 generator 2 what is the contibution of avr during synchronization

chief,

must be same phase angle,voltage and frequency. before you synchronize,automatic voltage regulator. avr you can adjust the voltage there,and the speed is on the governor.

i hope it will help a little bit.

speed

dear sir.

how are you? thank you sir for your kind reply i really appreciate.

your righ sir must to check 1st the phase angle and i did it already. I adjust the voltage,frequency and it goes to right settings 400v by 50hz with no load. But the is when the synchronise come in this the time give headache to us. This the following problem we suffer.

1. the voltage is up in down it the generator breaker is trip.

2. also the frequency is up and down.

3. the load sharing is not balance i.e gen1 is running at heavy load but the is running at less load.

4. and the reverse current is too high and the mean busbar is triping after few minutes..

can give me a tips how to solve this.

thank you more power.

Chief,

Check your prime mover,.because of the frequency is up and down,it will affect also the voltage.

or check your loadsharing seting,asynchronous,isoc.i.e

speed

chief,

check the rpm,how many poles , adjust the voltage setting in the AVR.