AS440 Stamford controlled thyristor AVR Automatic Voltage Regulator
AS440 is a half wave phase controlled thyristor type AVR and forms part of the excitation system for a brush-less generator. The design employs Surface Mount Technology (SMT) for high integration of features in a small footprint AVR.
Sensing Input | Voltage | Jumper selectable 100-130 Vac 1 phase 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 transient 7.5A for 10 secs |
Resistance | 15 ohms min (10 ohms min when input Volts is less than 175 ac) |
Regulation | ± 1.0% |
Thermal drift | 0.03% per deg. C change in AVR ambient |
Typical system response | AVR response | 20 ms |
Filed current to 90% | 80 ms |
Machine Volts to 97% | 300 ms |
External voltage adjustment | ±-10% with 1kohm 1 watt trimmer Increasing resistance lowers voltage. |
Uuder frequency protection | Set point | 94 -98% Hz |
Unitpower dissipation | 12 watts maximum |
Build up voltage | 4 Volts @ AVR terminals |
Analogue voltage | Maximum input | ±5 Vdc |
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 |
|
| 100Hz - 2kHz |
50mm/sec | Operating temperature | 40degree under zero to 70 degree |
3.3g | Relative humidity 0-70ºC | 95% |
| Storage temperature | Storage temperature -55 to +80C |
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