MX321 AVR
Stamford AVR MX321
Automatically Voltage Regulator
OEM Service Available
Strictly testing, Good quality control.
Stamford AVR (Automatically Voltage Regulator) MX321
Sensing input | |
voltage | 190 -264V ac max,2 or 3 phase |
Frequency | 50-60 Hz nominal |
Power input (PMG) | |
Voltage | 190-220V ac max.3 phase ,3 wire |
current | 3A/phase |
Output | |
Voltage | Max 120V dc |
Current | Continuous 3.7 A ( see note 1 ) Intermittent 6A for 10 secs |
resistance | 15 ohms minimum |
regulation | +/- 0.5% RMS with 4% engine governing (see note 2 ) |
Thermal drift | 0.02% per deg .C change in AVR ambient (note 3 ) |
Soft start ramp time | 0.4 – 4 seconds |
Typical system response | |
AVR response | 10 ms |
Filed current to 90% | 80 ms |
Machine volts to 97% | 300 ms |
External voltage adjustment | +/- 10% with 5 k ohm 1 watt trimmer (see note 4 ) |
Under frequency protection | |
Set point | 95% Hz (see note 5 ) |
Slope | 100-300% down to 30 Hz |
Max Dwell | 20% volts/s recovery |
Unit power dissipation | 18 watts maximum |
Analogue input | |
Maximum input | +/- 5V dc (see note 6) |
sensitivity | 1v for 5% generator volts (adjustment ) |
Input resistance | 1k ohm |
Quadrature input | |
10 ohms burden |
|
Max sensitivity | 0.22 A for 5% droop OPF |
Max input | 0.33 A |
Current voltage detection input | |
Set point | 300V .time delay:1 sec(fixed ) |
CB trip coil volts | 10 – 30 V dc |
CB trip coil resistance | 20-60 ohms |
Over excitation protection | |
Set point | 75 V dc |
Time delay | 8-15 seconds( fixed ) |
environmental | |
vibration | 20 – 100 Hz 50mm/sec |
| 100Hz – 2k Hz 3.3g |
Operating temperature | -40 to +70 degree |
Relative humdity 0-70 degree | 95% (see note 7 ) |
Storage temperature | -55 to + 80 degree |
