Newage Stamford MX341

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

Please read the specification sheet for further details

 

SENSING INPUT Voltage 190-264V ac max, 1 phase, 2 wire
  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
  Intermittent 6A for 10 secs.
  Resistance 15 ohms minimum
   
REGULATION +/- 1% (see note 1)
   
THERMAL DRIFT 0.03% per oC change in AVR ambient (note 2)
   
SOFT START RAMP TIME 3 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 1 k ohm 1 watt trimmer (see note 3)
   
UNDER FREQUENCY PROTECTION Set point 95% Hz (see note 4)
  Slope 170% down to 30 Hz
   
UNIT POWER DISSIPATION 12 watts maximum
   
ANALOGUE INPUT Maximum input +/- 5V dc (see note 5)
  Sensitivity 1v for 5% Generator Volts (adjustable)
  Input resistance 1k ohm
   
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)
   
ENVIRONMENTAL Vibration 20-100 Hz 50mm/sec
  100Hz – 2kHz 3.3g
  Operating temperature -40 to +70oC
  Relative Humidity 0-70oC 95% (see note 6)
  Storage temperature -55 to +80oC
   
NOTES 1. With 4% engine governing.
  2. After 10 minutes.
  3. Applies to Mod status D onwards. Generator de-rate may apply. Check with factory.
  4. Factory set, semi-sealed, jumper selectable.
  5. Any device connected to the analogue input must be fully floating (galvanically isolated from ground), with an insulation strength of 500V ac.
  6. Non condensing.

 

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