Model NO.                            MX321

 

Sensing Input               Voltage 190~264 VAC 2 phase or 3 phase Frequency 50/60 Hz selectable

 

Power Input(PMG)            Voltage 170~220 VAC 3 phase 3 wire Current 3A / phase Frequency 100~120 Hz                                   nominal

 

Output                      Voltage Max. 120 VDC Current Continuous 4A, Intermittent 7A for 60                                           sec.Resistance  Min. 15 Ohm

 

Voltage Regulation            < ±0.5% RMS (with 4% engine governing)
 
Voltage Build-up              Residual volts at AVR terminal > 5 VAC

 

External Volts Adjustment     ±10% with 5 K Ohm 1 watt trimmer

 

Unit Power Dissipation         Max. 18 watt

 

Thermal Drift                  0.05% per °C change in AVR ambient

 

Soft Start Ramp Time           0.4~4 sec.

 

Analogue Input                   Max. input ±5 VDC Sensitivity 1V for 5% generator volts
                                 Input Resistance 1 K Ohm

 

Droop Input                       Burden 10 Ohm Max. Sensitivity 0.22A for 5% droop (PF=0)
                                   Max. Input 0.33A

 

Under Frequency Protection
(Factory Setting)                   Set point 95% Hz
                                    Slope 100~300% down to 30 Hz
                                    Max. Dwell 20% volts/sec. recovery

 

Current Limit Input                 Burden 10 Ohm
                                   Sensitivity range 0.5~1A

 

Over Voltage Detector Input          Set point 300V
                                     Time delay 1 sec. (fixed)
                                     CB trip coil volts 10~30 VDC / 0.5 Amp

 

Over Excitation Protection            Set point 120 VDC
                                      Time delay 8~15 sec.

 

Environment                           Operating Temperature : -40~70 °C
                                      Storage Temperature : -40~85 °C
                                      Relative Humidity : Maximum 95%
                                      Vibration : 3.3G @ 100~2 KHz

 

AVR Controls Functions                VOLT : Output Voltage Adjustment
                                      STAB : Stability Adjustment
                                      UFRO : UFRO Knee Point Set
                                      DROOP : To Set the Droop to 5% at PF=0
                                      TRIM : To Optimize Analogue Input Sensitivity
                                      EXC : Over Excitation Trip Level Set
                                      DIP : Hz Related Voltage DIP Set
                                      DWELL : Hz Related Recovery Time Set
                                      I LIMIT : Stator Current Limit Set
                                      OVER V : Over Voltage Trip Level Set
                                      RAMP : No Load Voltage Ramp Set Time
                                       RMS : Root Mean Square of Generator

 

Dimensions                              203.0 (L) x 153.0 (W) x 39.1 (H) mm

 

Weight                                     530 g ±2%