T
This is my first post so excuse any wrong info or not enough info.
We have 8 Cummins diesel generators (KTA50-D 1000 kw, 690V, 50Hz) on a our derrick barge. We usually run just 3 gens to handle the load (900-1500 kw). We have one problem gen that will share the load with the other 3 gens for about 20-30 min. with no issues, then it starts taking the load and dropping load. But not really enough to go into over speed or reverse power.
For instance all 4 gens had a balanced load of 250 kw. #1 gen the problem gen will jump up to 500 kw and then drop down to 90 kw. and back up and back down. So I took it offline. The power factor also goes up and down. Voltage pretty much stays the same (690v-689v). The COS needle acts weird it starts shaking in one place
I have changed the gov control (p/n cummins 3098693)(droop and gain same as other gens 10 droop, 40 gain) the mag pick up, and checked all connections to the actuator (p/n 3408324) and fuel shut down. Even had mechanics install new actuator and fuel shut down.
This gen is a replacement for the original gen that smoked not sure what caused it we believe condensation build up, heater had gone out.
Any help or ideas will be greatly appreciated.
We have 8 Cummins diesel generators (KTA50-D 1000 kw, 690V, 50Hz) on a our derrick barge. We usually run just 3 gens to handle the load (900-1500 kw). We have one problem gen that will share the load with the other 3 gens for about 20-30 min. with no issues, then it starts taking the load and dropping load. But not really enough to go into over speed or reverse power.
For instance all 4 gens had a balanced load of 250 kw. #1 gen the problem gen will jump up to 500 kw and then drop down to 90 kw. and back up and back down. So I took it offline. The power factor also goes up and down. Voltage pretty much stays the same (690v-689v). The COS needle acts weird it starts shaking in one place
I have changed the gov control (p/n cummins 3098693)(droop and gain same as other gens 10 droop, 40 gain) the mag pick up, and checked all connections to the actuator (p/n 3408324) and fuel shut down. Even had mechanics install new actuator and fuel shut down.
This gen is a replacement for the original gen that smoked not sure what caused it we believe condensation build up, heater had gone out.
Any help or ideas will be greatly appreciated.