Bit of a setback today.
So, I had everything going alright with my 6 hours test. Only issue was the AUX fuel pump didn't kick in but I left that to a back connection I made during replacement.
At 1hr 20min to go, it shut down due to overtemp. It was the pre-overtemp... basically the 240deg one.
So, Everything was going okay. My best guess is that it just slowly got hot because I was running it hard. The MEP 803A I just did, I ran at 12,000 watts for 6hours. Apparently these can't take it, unless there was an underlying problem. The panel did show a warning, but the contactor never opened and for almost 5 hours, the generator ran fine. A little smoke as it stepped up but otherwise it was running smooth & happy.
After letting it cool, I went to start again. It cranked, and I got some while smoke (figured it was un-burnt fuel from the abrupt shutdown.) It seemed to be struggling a bit. Then, an "Excitation Failure" fault came up & it shut down. L2 was getting nothing. Cleared the fault, completely cut power with the breaker, and tried again. It did start & no fault, but I could clearly see the voltage was not right. Around 35 volts each leg. I also could hear a whine, like the generator was struggling. I shut it down.
There was smell of burning electrical stuff. Oh no!! I hope that running at 12,000 watts, it didn't burn something up.
~95deg air temp. Coolant system seemed to be working fine. Fan kicked in.
I checked the Quad Winding breakers and they are set. Looked for a bit at the TM & I see where the connectors are. Going to see if I can find a Work Task for tests further. Hopefully something just needs to be reset or a wire somewhere is loose/rubbed through.
I'm thinking that running it hard had it really close to overheat, then some sort of malfunction on the electrical side but more load on & cause the few extra degrees to make it shutdown, then going to restart is showing that issue.
Dinner time now.
