Recently been having problems on ship with our 2 Caterpillar 3406c Generators. Both generators are identical and both using EMRI CAT v2.3 AVRs.
When both are running in Parallel, both generators seem to be sharing load (kW) equally, but we are noticing these things:
Generator 1 has a much higher KVAR reading and lower power factor (around 0.5-0.6 ish) compared to the other generator. The main breaker for this generator is also showing much higher current values, sometimes even nearing 100% load on the breakers trip unit.
Generator 2 is reading close to 0 KVAR and sometimes it’s even going to around -3 KVAR, and it also has very close to 1.0 p.f. The current values on the breaker for this generator are much lower compared to the other.
We recently replaced the AVR and Rectifier Diode Bridge on Generator 1 as we had a problem with one of the exciter fuses blowing, which we don’t 100% know the cause for.
Any solutions or explanations as to why this is the case would be appreciated.
Thanks
When both are running in Parallel, both generators seem to be sharing load (kW) equally, but we are noticing these things:
Generator 1 has a much higher KVAR reading and lower power factor (around 0.5-0.6 ish) compared to the other generator. The main breaker for this generator is also showing much higher current values, sometimes even nearing 100% load on the breakers trip unit.
Generator 2 is reading close to 0 KVAR and sometimes it’s even going to around -3 KVAR, and it also has very close to 1.0 p.f. The current values on the breaker for this generator are much lower compared to the other.
We recently replaced the AVR and Rectifier Diode Bridge on Generator 1 as we had a problem with one of the exciter fuses blowing, which we don’t 100% know the cause for.
Any solutions or explanations as to why this is the case would be appreciated.
Thanks