Stamford Generator AVR EA440 Auto Voltage Regulator EA440
EA440 self excited brushless type genset voltage regulator is a compatible replacement for Newage Stamford SX440 and Onan 305-0824.
Features
- Voltage Regulation < ±1%
- Can Be Use In Parallel Operation
- Adjustable DIP, TRIM & DROOP Function
- Under Frequency Roll Off Protection
- Sensing Voltage Loss Protection
- Under Frequency LED Indicator
- Soft Start Voltage Ramping
Specifications
Sensing Input |
Voltage 190~264 VAC 1 phase 2 wire
Frequency 50/60 Hz selectable |
Output |
Voltage Max. 90 VDC at 207 VAC
Current Continuous 4A, Intermittent 10A for 10 Sec.
Frequency Min. 15 Ohm |
Voltage Regulation |
< ±1% (with 4% engine governing) |
Voltage Build-up |
Residual volts at AVR terminal > 5 VAC |
External Volts Adjustment |
±8% with 1 K Ohm 1 watt trimmer |
Unit Power Dissipation |
Max. 12 watt |
Thermal Drift |
0.04% per °C change in AVR ambient |
Under Frequency Protection (UFRO) |
Set point 95% Hz
Slope 170% down to 30 Hz |
Soft Start Ramping |
2 Sec. |
Analogue Input |
Max. Input ±5 VDC
Sensitivity 1V for 5% generator volts
Input Resistance 1 K Ohm |
Droop Input |
Burden 10 Ohm
Max. sensitivity 0.07A for 5% droop (PF=0)
Max. input 0.33A |
Environment |
Operating Temperature : -40~70 °C
Storage Temperature : -40~85 °C
Relative Humidity : Maximum 95%
Vibration : 3.3G @ 100~2 KHz |
AVR Controls Functions |
VOLT : Voltage Adjustment
STAB : Stability Adjustment
U/F*: To Set the U/F Knee Point
(*U/F: Under Frequency Protection)
DROOP : Droop Adjustment
TRIM : Analogue Input Adjustment
DIP : U/V Rate Set |
Dimensions |
150.0 (L) x 135.0 (W) x 48.0 (H) mm |
Weight |
418g ±2%
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