AVR MX321 Automatic Voltage Regulator for Stamford Diesel Generator
$110.00
Substitute Stamford Automatic Voltage Regulator AVR MX321
Availability: 19 in stock
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General description
The AVR MX321 is a three-phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brushless generator.Excitation power is derived from a three phased permanent magnet generator (PMG), to isolate the AVR control circuits from the effects of nonlinear loads and to reguce radio frequency interence on the generator terminals.Sustained generator short circuit current is another feature of the PMG system.
Details
| Sensing Input | Voltage | 190-264V ac max, 2 or 3 phase |
| Frequency | 50-60 Hz nominal | |
| Power Input(PMG | Voltage | 170-220V ac max, 3 phase, 3 wire |
| Current | 3A/phase | |
| Frequency | 100-120 Hz nominal | |
| Output | Voltage | Max 120V dc |
| Current | Continuous 3.7 A, Intermittent 6A for 10 secs | |
| Resistance | 15 ohms minimum | |
| Regulation | +/- 0.5% RMS with 4% engine governing | |
| Thermal Drift | 0.02% per Deg. C change in AVR ambient | |
| Soft Staret Ramp Time | 0.4 – 4 seconds | |
| Typical system response | AVR response | 20ms |
| Filed current to 90% | 80 ms | |
| Machine Volts to 97% | 300ms | |
| External voltage adjustment | +/-10% with 5k ohm 1 watt trimmer | |
| Under frequency protection | Set point | 95% Hz |
| Slope | 100%-300% down to 30 Hz | |
| Max. Dwell | 20% volts/S recovery | |
| Unit power dissipation | 18 watts maximum | |
| Analogue Input | Maximum input | +/- 5 Vdc |
| Sensitivity | 1v for 5% Generator Volts (adjustable) | |
| Input resistance | 1k ohm | |
| Quadrature Droop Input | 10 ohms burden | |
| Max. sensitivity: 0.22 A for 5% droop 0PF | ||
| Max. input: 0.33A | ||
| Environmental | Vibration | 20-100 Hz,50mm/se |
| 100Hz – 2kHz, 3.3g | ||
| Operating temperature | -40 to +70 Deg. C | |
| Relative Humidity 0-70 Deg. | 95% | |
| Storage temperature | -55 to +80 Deg. | |
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