GAVR-8A is a Automatic Voltage Regulator(AVR) and forms part of the excitation system for a brush-less generator. SENSING INPUT:Voltage : 90-480V ac max, Frequency : 50-60 Hz nominal, POWER INPUT: Voltage : 95-264V ac max, Frequency : 50-60 Hz nominal, OUTPUT: Voltage : max 90V dc at 207V ac input, Current : continuous 2A,Intermittent 5A for 10 secs. Resistance : 15 ohms minimum, REGULATION: +/- 1%.