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Power Master MX321 Automatic Voltage Regulator

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MX321 Automatic Voltage Regulator. INPUT: 170-220V ac max. 3A/phase | Frequency: 100 - 120 Hz nominal

$ 102.49 102.49000000000001 USD $ 102.49

$ 102.49

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POWER INPUT
(PMG)

 170-220V AC max, 3 phase. 

3 wire

OUTPUT
Max 120V dc
Current continuous 3.7 A
WEIGHT

1.6 POUNDS

SIZE

9 x 7 x 2 Inches

REGULATION

  +/- 0.5% RMS with 4% engine governing


MX321 is a three phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brush-less generator. Excitation power is derivad from a three-phase permanent magnet generator (PMG), to isolate the AVR control circuits from the effects of non­linear loads and to reduce radio frequency interference on the generator terminals. Sustained generator short circuit current is another feature of the PMG system.  

SENSING INPUT

190-264V ac max, 2 or 3 phase

THERMAL DRIFT

0.02% per deg. C chance in AVR ambient

UNIT POWER DISSIPATION

  18 watts maximum

  • 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 lntermittent 6A far 1 O secs ◖Resistance: 15 ohms mínimum
  • Regulation - +/- 0.5% RMS with 4% engine governing 
  • Thermal Drift - 0.02% per deg. C change in AVR ambient 
  • Soft Start Ramp Time - 0.4 - 4 seconds
  • Typical Sistem Response - AVR response 10 ms / Filed current to 90%- 80 ms / Machine Volts to 97% - 300 ms
  • External Voltage Adjustment - 1800 mmss 300 ms +/-10% with 5k ohm 1 watt trimmer
  • Under Frequency Protection - Set point 95% Hz /Slope 100-300% down to 30 Hz /Max. Owell 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: 0.33 A
  • Current Limit Input - 10 ohms burden / Sensitivity range: 0.5 - 1A
  • Over Voltage Detector Input -  ◖Set point: 300v ◖Time Delay: 1 Sec (fixed) ◖CB trip coil volts: 10 - 30 vdc ◖CB trip coil resistance: 20 - 60 ohms
  • Over Excitation Protection - Set point 75V dc / Time Delay 8 - 15 seconds (Fixed) 
  • Enviromental - ◖Vibration: 20-100 Hz - 50mm/sec - 100 Hz - 2k Hz 3.3g ◖Operating temperature: -40 to + 70° C ◖Relative Humidity: 0-70°C: 90% ◖Storage Temperature: -55 to + 80°C



MX321 is a three phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brush-less generator. Excitation power is derivad from a three-phase permanent magnet generator (PMG), to isolate the AVR control circuits from the effects of non-­linear loads and to reduce radio frequency interference on the generator terminals. Sustained generator short circuit current is another feature of the PMG system.  


Stability Adjustment

The AVR includes a stability or damping circuit to provide good steady state and transient performance of the generator.

Droop Adjustment

Generators intended for paralei operation are fitted with a quadrature droop C.T. wich provides a power factor dependent signal for the AVR.

Droop Adjustment

An analogue input is provided to connect to the Newage Power Factor Controller or other devices, It is designed to accept the signals up to +/- 5 volts.


The AVR includes an over-voltage protection feature with internal shutdown of the AVR output device, plus the ability to trip an optional excitation circuit breaker it required.

Provision is made for the connection of a remote voltage trimmer, allowing the user fine control of the generators output.