Read more

Product Description 

The AVR AS440 is a high-performance Automatic Voltage Regulator designed for use with Stamford alternators in generator applications. It plays a crucial role in ensuring a stable and reliable power supply by regulating the generator's output voltage.




SENSING INPUT
       Voltage      Jumper selectable 
                       100-130 Vac 1 phase or
                       190-264 Vac 1 phase
        Frequency  50-60 Hz nominal
POWER INPUT 
        voltage     100-264 V ac 1 phase 
        Frequency 50-60 Hz nominal
OUTPUT
        Voltage     82 V d.c. @ 200 V a.c. 
        Current      continuous 4A (see note 1).
                        transient 7.5A for 10 secs.
        Resistance    15 ohms min (10 ohms min when input volts is less than 175 ac)
REGULATION
        +/- 1.0% (see note 2)
THERMAL DRIFT
        0.03% per deg. C change in AVR ambient (see note 3)
TYPICAL SYSTEM RESPONSE
         AVR response             20 ms
        Filed current to 90%     80 ms
        Machine Volts to 97%   300 ms
EXTERNAL VOLTAGE ADJUSTMENT
        +/-10% with 1 k ohm 1 watt trimmer (see note 4)
         Increasing resistance lowers voltage.
UNDER FREQUENCY PROTECTION
         Set point      94 -98% Hz (see note 5)
UNIT POWER DISSIPATION
         12 watts maximum
BUILD UP VOLTAGE
          4 Volts @ AVR terminals
ANALOGUE INPUT
         Maximum input    +/- 5 Vdc (see note 6)
         Sensitivity          1V for 5% Generator Volts (adjustable)
         Input resistance  1k ohm 
QUADRATURE DROOP INPUT
         10 ohms burden
         Max. sensitivity: 0.07 A for 5% droop 0PF
         Max. input:  0.33 A
OVER EXCITATION PROTECTION
         Set point 65 V dc
         Time delay 10-15 seconds (fixed)
ENVIRONMENTAL
          Vibration    20-100 Hz 50mm/sec
                         100Hz – 2kHz 3.3g
          Operating temperature    -40 to +70C (note 7)
          Relative Humidity 0-70C   95% (note 8)
          Storage temperature       -55 to +80C