The AVR has the faclity for droop CT connection,to allow parallel running with other similarly equipped generators. SX440 is a two phase sensed Automatic Voltage Regulator(AVR) and forms part of the exciation system for a brush-less generator. The AVR senses the voltage in the main generator winding and control the power fed to the stator and hance the main to maintain the generator output voltage within the specified limits, compensating for load sprrd,temperature and power factor of the generator. Vibration:20 -100HZ (50mm or sec), 100Hz -2kHz Colour: Black Material: metal and PC Sensing Input: Voltage: 190-264V ac max, 1 phase 2 wire Frequency: 50-60HZ nominal Power inpot Voltage: 140-220 V ac max, 3 phase,3 wire Current: 3A or phase Frequency: 100-120HZ nominal Out put Voltage: max 120V or DC Current: continuous 2.7A or DC Intermittent 6A for 10 secs Resistance: 15 ohms minimum Regulation: 1 percent Thermal drift: 0.03 percent per .C change in AVR Soft start pamp time: 3 sec Typical system response AVR respone: 10ms Filed current to 90 percent : 80ms Machine Volts to 97 percent : 300ms External voltage adjustment: 10 percent with 1k ohm 1W trimmer Under frequency protection Set point: 95 percent HZ Slope: 170 percent down to 30HZ Unit power dissipation: 12 maximum Analogue input Maximum input: 5V or DC Sensitivity 1V for 5 percent Generator Volts(adjustable) Input resistance 1k ohm Quadrature droop input 10 ohms Max.sensitivity:0.07A for 5 percent droop OPF Max.input:0.33A Over excitation protection Set point:75V or DC Time relay:10 sec Environmental Vibration:20 -100HZ (50mm or sec), 100Hz -2kHz Operating temperature: -40C to and70 C Relative Humidity: 95 percent Storage temperature: -55Cto and80C Package Contents: 1 x Automatic Voltage Regulator Only the above package content, other products are not included. 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.