AS440 AUTOMATIC VOLTAGE
REGULATOR (AVR)
CONTROL |
FUNCTION | DIRECTION |
VOLTS | TO ADJUST GENERATOR OUTPUT VOLTAGE | CLOCKWISE INCREASES OUTPUT VOLTAGE |
STABILITY | TO PREVENT VOLTAGE HUNTING | CLOCKWISE INCREASES THE DAMPING EFFECT |
UFRO | TO SET THE UFRO KNEE POINT | CLOCKWISE REDUCES THE KNEE POINT FREQUENCY |
DROOP | TO SET THE GENERATOR DROOP TO 5% AT FULL LOAD 0PF | CLOCKWISE INCREASES THE DROOP |
TRIM | TO MATCH AVR INPUT TO ACCESSORY OUTPUT | ALLOWS THE ACCESSORY MORE CONTROL OVER AVR |
EXC TRIP | TO SET OVER EXCITATION TRIP CUT OFF LEVEL | CLOCKWISE INCREASES THE CUT OFF LEVEL |
BUILD UP VOLTAGE
4 Vac @ AVR terminal
QUADRATURE DROOP INPUT
10 ohms burden
Max. sensitivity 0.07A for 5% droop (PF=0 ) Max. Input 0.33A
TECHNICAL SPECIFICATIONS
SENSING INPUT
Voltage 100-130Vac, 170-264Vac
Frequency 50-60Hz nominal
Phase 2
POWER INPUT
Voltage 100-264Vac 1 Phase
Frequency 50-60Hz
OUTPUT
Voltage Max.82Vdc @ 200Vac Input
Current Continuous 4A
Transient 7.5A for 10secs.
Field Resistance Min.15 ohm (Min.10 ohm when input voltage is less than 175Vac)
REGULATION
±1.0% (with 4% engine governing)
UNDER FREQUENCY PROTECTION
Set point 94-98%Hz
EXTERNAL VOLTAGE ADJUSTMENT
±10% with 1K ohm 1 watt trimmer
Increasing resistance lowers voltage
ANALOGUE INPUT
Maximum input ±5Vdc
Sensitivity ±1V for 5% Generator Volts
Input resistance 1k ohm
TYPICAL SYSTEM RESPONSE
AVR response
20 ms Field current to 90%
80ms Machine Volts to 97% 300ms
THERMAL DRIFT
0.02% per deg. C change in AVR ambient
OVER EXCITATION PROTECTION
Set point 65Vdc
Time delay 10-15 seconds (fixed)
ENVIRONMENT
Vibration 20-100Hz 50mm/sec
100Hz-2kHz 3.3g
Relative Humidity 0-70 °C 95% Operating Temperature -40°C to +70°C Storage Temperature -55°C to +80°C
DIMENSIONS
Outline Dimensions 104(W)×139(H)×39(D) (mm)
Installation Size 80(W)×115(H) (mm) ×Φ5-4
Weight 300g
Color Black
