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Automatic voltage regulator Stamford AVR AS440
High quality replacement model for Stamford AVR AS440 with reasonable price!
Replacement Models:AS440, AS480, SX440, SX460, MX341, MX321, MX450
Original Modules: AS440, AS480, SX460, MX341, MX321, MX450, MX342, MX330, EBC-1, RSK1001, RSK2001, RSK5001, RSK6001
The Brands mentioned here are for reference purpose only, our parts can exactly replace the original ones.
STAMFORD AS440 AVRis used in Stamford UC224 or UC274 generators. The AS440 offers an optional feature for paralleling with multiple generators.
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.
Technical specification | |
Sening input | |
Voltage | Jumper selectable 100-130V ac 1 phase or 190-264V ac 1 phase |
Frenquency | 50-60Hz nominal |
| Power input |
|
Voltage | 100-264V ac 1 phase |
Frequency | 50-60Hz nominal |
Output |
|
Voltage | 82V dc @200V ac |
Current | continuous 4A transient 7.5A for 10 secs |
Resistance | 15 ohms min (10 ohms min when input volts i s less than 175ac) |
Regulation | +/-1.0% |
Thermal Drift | 0.03% per deg. C change in AVR ambient |
Typical System Response | AVR response 20ms Field current to 90% 80ms Machine Volts to 97% 300ms |
External Voltage Adjustment | +/-10% with 1 k ohm 1 watt trimmer Increasing resistance lowers voltage |
Under frequency Protection | Set point 94-98% Hz |
Unit power Dissipation | 12 watts maximum |
Build Up Voltage | 4 Volts @ AVR terminals |
Analogue input | Maximum input +/-5V dc Sensitivity 1V for 5% Generator Volts(adjustable) input resistance 1k ohm |
Quadrature Droop input | 10 ohms burden Max. sensitivity: 0.07A for 5% droop 0 PF Max. input: 0.33A |
Over Excitation protection | Set point 75V dc Time delay 10-15 seconds(fixed) |
Environmental | |
Vibration | 20-100Hz 50mm/sec 100Hz-2kHz 3.3g |
Operating temperature | -40 to +70C |
Relative Humidity 0-70C | 95% |
Storage temperature | -55 to +80C |
Notes | |
1. De-rate by 12% if mounted in portrait orientation. | |
2. With 4% engine governing. | |
3. After 2 minutes. | |
4. Generator de-rate may apply. Check with factory. | |
5. Factory set, semi-sealed, jumper selectable. | |
6. Any device connected to the analogue input must be fully floating(galvanically isolated form ground), with an insulation strength of 500V ac | |
7. De-rate output current by 5% per degree C above 60C. | |
8. Non condensing | |
