AVR MX341

Automatic Voltage Regulator

The MX341 AVR 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. MX341 AVR E000-2412 to suit Stamford Newage Generator.

avr-mx341
AVR MX341

Technical Specification :

  • SENSING INPUT

Voltage: 196-264V 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 3.7A dc(see note 1)

Intermittent 6A for 10 secs

Resistance: 15 ohms minimum

  • Regulation: +/-0.5% RMS with 4% engine governing (see note 2)
  • THERMAL DRIFT: 0.02% per deg.C change in AVR ambient(note 3)
  • SOFT START RAMP TIME: 0.4-4 seconds
  • TYPICAL SYSTEM RESPONSE

AVR response                 10ms

Filed current to 90%       80ms

Machine Volts to 97%    300ms

  • EXTERNAL VOLTAGE ADJUSTMENT: +/-10% with 5 k ohm 1 watt trimmer(see note 4)
  • UNDER FREQUENCY PROTECTION

Set point 95% Hz(see note 4)

Slope 100-300% down to 30 Hz

Mx. Dwell 20% volts/S recovery

  • UNIT POWER DISSIPATION: 18 watts maximum
  • ANALOGUE INPUT

Maximum input +/- 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: 0.5-1 A

  • 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)

  • ENVIRONMENTAL

Vibration 20-100 Hz 50mm/sec

100hz-2kHz 3.3g

Operation temperature -40-+70°C

Relative Humidity 0-70 °C   95%

Storage temperature: -55 to +80 °C

Request a Quote, Please fill form below :

Author: mavinelectric

Electrical Engineering Contractor