Stamford AVR Sx440 Regulator AVR Sx440

Stamford Voltage Regulator sx440
1. Brushless, 50-500kw
2. Factory direct sales
OEM service is available
Stamford Voltage Regulator sx440
SX440 is a harlf-wave phase-controlled thyristor type Automatic Voltage Regulator(AVR)
And forms parts of the excitation system for a brushless generator.

Features
Voltage Regulation < ± 1%
Soft Start Voltage Ramping
Sensing Voltage Loss Protection
120 or 240 VAC Sensing, Jumper Selectable
Under Frequency Roll Off Protection
With Under Frequency LED Indicator
Sensing Input Terminal 0-110V = 90~150V
Terminal 0-220V = 175~260V
Terminal 0-380V = 350~520V
Power Input Voltage 100~264 VAC, Single Phase
Output Voltage Max. 90 VDC at 207 VAC
Current Continuous 4 ADC, Intermittent 10A for 10 sec.
Thermal Drift 0.05% per ° C change in AVR ambient
DROOP Input Max. Input 0.33A
Burden 10 Ω
0.07A for 5% droop (PF=0)
Under Frequency Protection U/F Potentiometer 45~60 Hz
Voltage Regulation < ± 1% (with 4% engine governing)
External Volts Adjustment ± 8% @ 1 kΩ
Voltage Build-up Residual volts at AVR terminal > 5 VAC
EMI Suppression Internal Electromagnetic Interference Filtering
Exciter Resistor DC Resistance 20~100 Ω
Analogue Input Max. Input ± 5 VDC Input Resistance 1 kΩ
1V for 5% generator volts
Unit Power Dissipation Max. 12 Watt
Environment Vibration: 1.5 G @ 5~30 Hz, 5.0 G @ 30~500 Hz
Relative Humidity: < 95%
Operating Temperature: -40~60 ° C
Storage Temperature: -40~85 ° C
AVR Controls Functions VOLT: Voltage Adjustment
STAB: Stability Adjustment
U/F: UFRO Knee Point Set (U/F: Under Frequency Protection)
DROOP: Droop Adjustment
TRIM: Analogue Input Adjustment
DIP: U/V Rate Set