dave313
Computer
- Jun 28, 2016
- 19
Hello, I have a Stamford S0 series alternator head controlled by an AS540 avr that is currently set for 120/240vac. I would like to change the winding outputs to 120vac. I know how to change the wiring and set the jumper on the avr but I have a question about the maximum output power.
The field coil is 17.5 ohms and the avr's maximum output power is 82 volts at 200vac. The avr wants a minimum of 15 ohms on the field at 240vac but states a minimum of 10 ohms below 175vac which is where my conversion will be operating. My calculations say that at 4 amps (avr max), the field voltage is 70 volts.
My concern is that the avr won't be able to generate the voltage on the field needed to get maximum power out on the gen set. Will I have to make other changes or will this work just fine?
Dave
The field coil is 17.5 ohms and the avr's maximum output power is 82 volts at 200vac. The avr wants a minimum of 15 ohms on the field at 240vac but states a minimum of 10 ohms below 175vac which is where my conversion will be operating. My calculations say that at 4 amps (avr max), the field voltage is 70 volts.
My concern is that the avr won't be able to generate the voltage on the field needed to get maximum power out on the gen set. Will I have to make other changes or will this work just fine?
Dave