The AVR has the facility 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 excitation system for a brushless generator. The AVR senses the voltage in the main generator winding and controls the feed to the stator and hence the main rotor to maintain the generator output voltage within the specified limits, compensating for load speed, temperature, and power factor of the generator. Vibration: 20–100 Hz (50 mm/sec), 100 Hz–2 kHz Color: Black Material: Metal + PC Sensing Input: Voltage: 190–264 V AC max, 1 phase, 2 wire Frequency: 50–60 Hz nominal Input: Voltage: 140–220 V AC max, 3 phase, 3 wire Current: 3 A/phase Frequency: 100–120 Hz nominal Output: Voltage: max 120 V DC Current: continuous 2.7 A DC, intermittent 6 A for 10 seconds Resistance: 15 ohms minimum Regulation: ±1% Thermal drift: 0.03% per °C change in AVR ambient Soft start time: 3 sec Typical system response: AVR response: 10 ms Field current to 90%: 80 ms Machine volts to 97%: 300 ms External voltage adjustment: ±10% with 1 kΩ 1W trimmer Under frequency protection: Set: 95% Hz Slope: 170% to 30 Hz Unit dissipation: 12 maximum Analogue input: Maximum input: ±5 V DC Sensitivity: 1 V for 5% Generator Volts (adjustable) Input resistance: 1 kΩ Quadrature droop input: 10 ohms Max sensitivity: 0.07 A for 5% droop OPF Max input: 0.33 A Over excitation protection: Set: 75 V DC Time relay: 10 sec Environmental: Vibration: 20–100 Hz (50 mm/sec), 100 Hz–2 kHz Operating temperature: -40°C to +70°C Relative humidity: 95% Storage temperature: -55°C to +80°C 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 to appear slightly different from the real thing. The measurement allowed error is ±1–3 cm.