1. MX341 is a two phase sensed Automatic Voltage Regulator(AVR) and forms part of the exciation system for a brush-less generator.
2. 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.
3. The AVR senses the voltage in the main generator winding and control the power fed to the exciter stator and hance the main rotor to maintain the generator output voltage within the specified limits,compensating for load sprrd,temperature and power factor of the generator
4. The AVR has the faclity for droop CT connection,to allow parallel running with other similarly equipped generators. 
   
   
   
   Technical specification
   
   SENSING INPUT
   
          Voltage      190-264V ac max, 1 phase 2 wire
   
          Frequency    50-60HZ nominal
   
      
   POWER INPUT
   
          Voltage      140-220 V ac max, 3 phase,3 wire
   
          CURRENT:   3A/phase
   
          Frequency    100-120HZ nominal
   
   OUTPUT
   
          Voltage      max 120V dc
   
          Current      continuous 2.7A dc
   
                            Intermittent 6A for 10 secs
   
          Resistance    15 ohms minimum
   
   REGULATION Accurecy：       +/-1%
   
   THERMAL DRIFT：  0.03% per deg.C change in AVR ambient
   
   SOFT START PAMP TIME： 3 sec
   
   TYPICAL SYSTEM RESPONSE
   
          AVR respone         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 30HZ
   
          
   
   UNIT POWER DISSIPATION：  12 watts maximum
   
   ANALOGUE INPUT
   
           Maximum input +/-5V dc
   
           Sensitivity 1V for 5% Generator Volts(adjustable)
   
           Input resistance 1k ohm
   
   QUADRATURE DROOP INPUT
   
           10 ohms burden
   
           Max.sensitivity:0.07A for 5% droop OPF
   
           Max.input:0.33A
   
   OVER EXCITATION PROTECTION:
   
            Set point:75vdc
   
            Time relay:10sec
   
   Environmental
   
           Vibration   20-100HZ             50mm/sec
   
                      100Hz 2kHz           3.3g
   
           Operating temperature              -40 to +70 C
   
           Relative Humidity 0-70C            95%
   
           Storage temperature                -55 to +80 C                                          
   
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