Adjustable Automatic Voltage Regulator MX341-A 1.8 years manufacture 2.Nupart package 3.complete models

Stamford AVR Parallel MX341-1A

 MX341-A Permanent Magnet Generator type voltage regulator is a compatible replacement for Newage Stamford MX341 and Onan 305-0846.

 

MX341-A is 2 phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brushless generator.Excitation power is derived from a three phased permanent magnet generator(PMG),to isolate the AVR control circuits from the effects of nonlinear loads and to reguce radio frequency interence on the generator terminals.Sustained generator short circuit current is another feature of the PMG system.

 

The AVR sense the voltage in the main generator winding and controls the excitation to maintain the generator output voltage with the specified limits,compensating for load,speed,temperature and power factor of the generator.Thress phase RMS sensing is emplyed for superior voltage regulation.

 

Adjustable soft start circuitry is included to provide a smooth controlled build up of generator output voltage.

Features

Voltage Regulation < ±1%3 Phase PMG Power InputFor Use In Parallel OperationAdjustable EXC TRIP, DIP, TRIM & DROOP FunctionsSoft Start Voltage RampingUnder Frequency Roll Off ProtectionUFRO & Over Excitation LED Indicators Sensing InputPower Input(PMG)OutputVoltage RegulationVoltage Build-upExternal Volts AdjustmentUnit Power DissipationThermal DriftSoft Start Ramp TimeAnalogue InputDroop InputUnder Frequency Protection (Factory Setting)Current Limit InputOver Voltage Detector InputOver Excitation ProtectionEnvironmentAVR Controls FunctionsDimensionsWeight

Voltage 190~264 VAC 1 phase 2 wireFrequency 50/60 Hz selectable

Voltage 170~220 VAC 3 phase 3 wireCurrent 3A / phaseFrequency 100~120 Hz nominal

Voltage Max. 120 VDCCurrent Continuous 2.7A, Intermittent 6A for 10 sec.Resistance Min. 15 Ohm

< ±1% (with 4% engine governing)

Residual volts at AVR terminal > 5 VAC

±10% with 1 K Ohm 1 watt trimmer

Max. 12 watt

0.05% per °C change in AVR ambient

3 sec.

Max. input ±5 VDCSensitivity 1V for 5% generator voltsInput Resistance 1 K Ohm

Burden 10 OhmMax. sensitivity 0.07A for 5% droop (PF=0)Max. input 0.33A

Set point 95% HzSlope 170% down to 30 Hz

Burden 10 OhmSensitivity Range 0.5~1A

Set point 300VTime delay 1 sec. (fixed)CB trip coil volts 10~30 VDC / 0.5 Amp

Set point 90 VDCTime delay 10 sec. (fixed)

Operating Temperature : -40~70 °CStorage Temperature : -40~85 °CRelative Humidity : Maximum 95%Vibration : 3.3G @ 100~2 KHz

VOLT : Voltage AdjustmentSTAB : Stability AdjustmentU/F : UFRO Knee point SetDROOP : Droop AdjustmentTRIM : Analogue Input AdjustmentEXC TRIP : Over Excitation Level SetDIP : U/V Rate Set

150.0 (L) x 135.0 (W) x 48.0 (H) mm

394g ±2%

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Adjustable Automatic Voltage Regulator MX341-A in PMG System