Technical details

Sensing Input

Voltage 190-264 Vac 1 phase 2 wireSupply Voltage, Frequency 50 / 60 Hz selectable< +/- 1% (with 4% Engine Governing)


Frequency 50 / 60 Hz selectable< +/- 1% (with 4% engine governing), Voltage Max. 90V DC @207 VacOperation Temperature -40 to +70 Celsius, Current Continuous 4A, Intermittent 10A for 10 sec.Relative Humidity Max. 95%, Resistance Min. 15 Ω

Voltage Regulation

< +/- 1% (with 4% engine governing)

Build Up Voltage

Residual volts at AVR terminal > 5V AC

External Volts Adjustment

+/- 8% with 1K ohms 1 watt trimmer

Unit Power Dissipation

Max. 12 watts

Thermal Drift

0.05% per °C change in AVR ambient

Under Frequency Protection

Set point 95% Hz, Slope 170% down to 30 Hz

Soft Start Ramp Time

2 sec.

Analogue Input

Max. input +/- 5V DC, Sensitivity 1V for 5% generator volts, Input resistance 1K Ω

Droop Input

Burden 10 Ω, Max. sensitivity 0.07A for 5% droop (PF=0), Max. input 0.33A


Operation Temperature -40 – +70 °C, Storage Temperature -40 – +85 °C, Relative Humidity Max. 95%, Vibration 3.3Gs @ 100-2K Hz

Self Excited Automatic Voltage Regulator, Compatible with Newage* Stamford SX regulator


SX460 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brush-less generator. In addition to regulating the generator voltage, the AVR circuitry includes under-speed and sensing loss protection features. Excitation power is derived directly from the generator terminals. Positive voltage build up from residual levels is ensured by the use of efficient semiconductors in the power circuitry of the AVR.