A. The AVR has the facility for droop CT connection, to allow parallel running with other similarly equipped generators. B. SX440 is a two phase sensed Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brush-less generator. C. The AVR senses the voltage in the main generator winding and controls the power fed to the stator and hence the main rotor to maintain the generator output voltage within the specified limits, compensating for load spread, temperature and power factor of the generator. D. Sensing Input: Voltage: 190-264V ac max, 1 phase 2 wire; Frequency: 50-60HZ nominal. E. Power input: Voltage: 140-220 V ac max, 3 phase, 3 wire; Current: 3A/phase; Frequency: 100-120HZ nominal. F. Output: Voltage: max 120V/DC; Current: continuous 2.7A/DC, Intermittent 6A for 10 secs; Resistance: 15 ohms minimum. G. Regulation: +/-1%. H. Thermal drift: 0.03% per .C change in AVR ambient. I. Soft start ramp time: 3 sec. J. Typical system response: AVR response: 10ms; Field current to 90%: 80ms; Machine Volts to 97%: 300ms. K. External voltage adjustment: +/-10% with 1k ohm 1W trimmer. L. Under frequency protection: Set point: 95%HZ; Slope: 170% down to 30HZ. M. Unit power dissipation: 12 watts maximum. N. Analogue input: Maximum input: +/-5V/DC; Sensitivity 1V for 5% Generator Volts (adjustable); Input resistance 1k ohm. O. Quadrature droop input: 10 ohms burden; Max. sensitivity: 0.07A for 5% droop OPF; Max. input: 0.33A. P. Over excitation protection: Set point:75V/DC; Time relay:10 sec. Q. Environmental: Vibration:20 -100HZ (50mm/sec), 100Hz -2kHz; Operating temperature: -40°C to +70°C; Relative Humidity: 95%; Storage temperature: -55°C to +80°C. R. Package Contents: 1 x Automatic Voltage Regulator. Only the above package content, other products are not included. S. Note: Light 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.