Description 1. Less than +/-1% Reglation2.110/220/400 VAC Programmable Input3.Rugged Compact Design; With Under Frequency Protection4.Soft Start Voltage Ramping5.EMI Suppression; Buit-in High Capacity 8Amp FuseInput Voltage: 110/220/400VAC, 1 phase 2 Wire INPUTVoltage:100-260V, 1 phase 2 WireOutput Voltage: Max 90V dc @240V ac inputCurrent: Continuous 3.7AIntermittent 5A for 10 secsResistance: 15 ohms min 100 ohms MaxRegulation+/-1.0% with 4% engine governingVoltage Build-up:Residualvolts at AVR teminal Greater than 5VACTHERMAL DRIFT0.03% per deg. C change in AVR ambientSOFT START RAMP TIME2 secondsEXTERNAL VOLTAGE ADJUSTMENT+/-7% with 1 k ohm 1 watt trimmerUNDER FREQUENCY PROTECTIONSet point: 95% HzSlope: 100-300% down to 30 HzMax. Dwell:20%volts/S recoveryUNIT DISSIPATION8 watts maximumThermal. Drift:0.03% per C chage in AVR ambientUnder Frequency:60Hz system presets knee point at 55Hz50Hz system presets knee point at 45HzOperating Temperature:-40C to + 60CStorage Temperature:-40C to + 85CRelative Humidity: Less than 95%Material:plasticcolour:BlackPackage Contents:3 * GAVR-8A Automatic Voltage RegulatorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.