100A inverter

DH112 check your PMs, I have APs

Terry

Thanks mjr I will look at that but I think all phases were the same.

hmm that is odd that all phases are down, I would suspect the controller then, but you could try and adjust the pile on it. The adjusting screw is on the front of the controller, near the cooling fins. if it hasn’t been disturbed it will have a red datum mark painted across the screw and body. Try adjusting up with that.

Thanks mjr I will look at that but I think all phases were the same.

we have a 100a inverter which seems to be running slow giving approximately 300 cycles and 90 volts it should be 400 cycles 115 volts can any one help with how to adjust it please.
we have a copy of AP 4343B but gives no info on adjusting the inverter but I am not convinced the copy we have is complete also any information on the type 12 control panel would help also.
Thanks in advance.

I dont think you will adjust that out on the Carbon pile, its too large. Your have a deeper problem there if the frequency and voltage are that far out. things to check;

1) check each phase output separately to establish which phase output is incorrect….

2) once you have done that, check the noise filters for th low phase, 450v 50Uf If I rememeber correctly. If you have a filter or two broken down, that will affect it

3) run it up off airframe without the type 12 controller, and see if your output is correct, type 12’s are solid state and they do cause problems when the start to go u/s