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  2. Power Master MX341 Generic Replacement for Cummins MX341 Automatic Voltage Regulator

Power Master MX341 Generic Replacement for Cummins MX341 Automatic Voltage Regulator

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MX341 Automatic Voltage Regulator. 190-264V ac max, 1 phase 2 wire | Frequency 50-60HZ nominal

$ 56.59 56.59 USD $ 56.59

$ 56.59

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POWER INPUT (PMG)

140-220V AC max, 3 phase, 3 wire

OUTPUT
Max 120V dc
Current continuous 2.7 A
WEIGHT

1.1 POUNDS

SIZE

7 x 6 x 2 Inches

REGULATION

+/-1%


MX341 is a two phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brush-less generator. Excitation power is derived 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

0.03% per ºC change in AVR ambient


UNIT POWER DISSIPATION

12 watts maximum

  • Sensing Input - ◖Voltage: 190-264V ac max, 2 or 3 phase ◖Frequency: 50-60 Hz nominal
  • Power Input (pmg) -  ◖Voltage:140-220V ac max, 3 phase, 3 wire ◖Current: 3A/phase ◖Frequency: 100-120 Hz nominal
  • Output - ◖Voltage: max 120V dc ◖Current: Continuous 2.7 A / lntermittent 6A for 10 secs ◖Resistance: 15 ohms minimum
  • Regulation - +/-1%
  • Thermal Drift - 0.03% per ºC change in AVR ambient
  • Soft Start Ramp Time - 3 seconds
  • Typical System Response - AVR Response 10ms / Filed current to 90% - 80ms / Machine Volts to 97% - 300ms
  • External Voltage Adjustment - + / -10% with 1k ohm 1 watt trimmer


  • Under Frequency Protection - Set point 95% Hz / Slope 170% down to 30 Hz
  • Unit Power Dissipation - 12 watts maximum
  • Analogue Input - ◖Maximum input: +/- 5V dc ◖Sensitivity: 1v for 5% Generator Volts(adjustable) ◖Input resistance: 1k Ω
  • Quadrature Droop Input - 10 ohms burden ◖Max. sensitivity: 0.07 A for 5% droop 0PF ◖Max. input: 0.33 A
  • Over Excitation Protection - Set point 75 V dc /Time delay 10 seconds (fixed)
  • Envirdmental - ◖Vibration: 20-100 Hz - 50mm sec. / 100Hz- 2kHz - 3.3g ◖Operating temperature: -40 to +70ºC ◖Relative Humidity: 0-70°C: 95% ◖Storage temperature: -55 to +80°C




  • MX341 is a two phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brush-less generator. Excitation power is derived 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.


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 parallel operation are fitted with a quadrature droop C.T. which provides a power factor dependent signal for the AVR. The C.T. is connected to S1, S2 on the AVR.

Trim Adjustment

An analogue input (A1 A2) is provided to connect to the Newage Power Factor Controller or other devices. It is designed to accept de signals up to +/- 5 volts.


A frequency measuring circuit continually monitors the shaft speed of the generator and provides under-speed protection of the excitation system by reducing the generator output voltage proportionally with speed below a pre-settable threshold. A further enhancement of this feature is an adjustable volts per Hertz slope to improve engine recovery time on turbo charged engines. Soft start circuitry is included to provide a smooth controlled build up of generator output voltage.