W
650KW Turbine generator Diodes got damage, causing no voltage build up or no excitation.
New diodes fixed and excitation took place and voltage come on the phases with a frequency of 50 Hz and turbine Turbine speed of 1500 RPM. Turbine runs smoothly on no load, but voltage keeps dropping when load is picked, until the main supply breaker trip off.
the following has been checked and done
1. check for no loose connection of the terminals
2. Phase to phase voltage reads 392 volt
3. Phase to neutral voltage reads 228 volt
4. Main breaker and bus bars have been check for no short circuit
Is it possible the AVR is also damage and need to be change?
New diodes fixed and excitation took place and voltage come on the phases with a frequency of 50 Hz and turbine Turbine speed of 1500 RPM. Turbine runs smoothly on no load, but voltage keeps dropping when load is picked, until the main supply breaker trip off.
the following has been checked and done
1. check for no loose connection of the terminals
2. Phase to phase voltage reads 392 volt
3. Phase to neutral voltage reads 228 volt
4. Main breaker and bus bars have been check for no short circuit
Is it possible the AVR is also damage and need to be change?