Generac 17.5kw broken down
I miss having my generac, it's 922cc 30hp engine and electronic speed control would easily handle loads that beat upother generators and take their lunch money. Loads like a transformer stick welder, big 3.5hp air compressor and my plasma cutter, it can easily run the air and the plasma at the same time.
The problem started when I removed the neutral ground bond to do main panel tie in.
It wouldn't start, because the fuel shutoff solenoid wouldn't open. So I pulled the fuel solenoid armature, then it started and tried to over speed, while not producing any voltage. When it does run at speed it only make 3 volts line to line so it has no excitation.
I restored the neutral ground bond but the damage was already done.
I think it fried the AVR. The electronic speed control needs around 90 to 120v AC to get a signal to speed reference.
I think if I power up the armature while it's running with batteries to create 100v or higher power the speed control should pickup. That would prove the AVR is bad and the speed control is good.
If it is the AVR then I don't want to put another gererac POS on there. For 2 reasons.
One it fried when I broke the neutral ground bond and 2 a new AVR is $160. You are supposed to break the neutral ground bond to to panel tie in.
I would like a different AVR, cheaper, but can make enough field power to get at least 50 amps out of my stator.
If the speed control is fried too I will remake it with a universal speed control and actuator, it will cost a little more than the generac control board, but at least I will be able to get parts for it.
It's kind of hard to think about doing off grid when your big generator is broken. I have a little 7kw it's easy to work on but it's seriously lacking the power of the big one.
Solar hybrid gasoline generator, 7kw gas, 180 watts of solar, Morningstar 15 amp MPPT, group 31 AGM, 900 watt kisae inverter.
Solar roof top GMC suburban, a normal 3/4 ton suburban with 180 watts of panels on the roof and 10 amp genasun MPPT, 2000w samlex pure sine wave inverter, 12v gast and ARB air compressors.