1. Less than +/-0.5% Reglation 2.220/400 VAC Programmable Input 3.Rugged Compact Design 4.With Under Frequency Protection; Soft Start Voltage Ramping 5. Suppression; Buit-in High Capacity 8Amp Fuse Input Voltage: 220/400VAC, 1 phase 2 Wire POWER INPUT Voltage: 180~240V, 1 phase 2 Wire Output Voltage: Max 90V dc @240V ac input Current: Continuous 15A Intermittent 20A for 10 secs Resistance: 10 ohms min 100 ohms Max Regulation +/-0.5% RMS with 4% engine governing Voltage Build-up: Residualvolts at AVR teminal 5VAC SOFT START RAMP TIME 3 seconds EXTERNAL VOLTAGE ADJUSTMENT +/-7% with 1 k ohm 1 watt trimmer UNIT POWER DISSIPATION 8 watts maximum Thermal. Drift: 0.05% per °C chage in AVR ambient Under Frequency: 60Hz system presets knee point at 57Hz 50Hz system presets knee point at 47Hz Operating Temperature: -40°C to + 65°C Storage Temperature: -40°C to + 85°C Relative Humidity: Less than 95% Material: plastic colour: Photo Color Package Contents: 3 x GAVR-20A Automatic Voltage Regulator 3 x English manual Only 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.