Stamford Generator Parts AVR Mx341 Mx321 Sx440 Sx460 As440 Price

The MX341 is a 2 phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brushless generator.In addition to regulating the generator voltage, the AVR circuitry includes protective features to ensure safe reliable control of the generator. This model supercedes the Series 3 range (same footprint & wiring 1 extra terminal) This AVR is used only in conjunction with permenant magnetic type alternators. Excitation power is resulting from a three-phase permanent magnet generator(PMG), to isolated the AVR power circuits from the effects of nonlinear loads and to reduce radio frequency interference on the generator terminals, constant generator short circuit current is another feature of the PMG system.

The AVR senses the voltage in the central generator winding and controls the power fed to the exciter stator and hence the main rotor to keep the generator output voltage within the specified limits, compensating for load, speed, temperature and power factor of the generator.

Soft start circuitry is included to provide a even controlled build up of generator output voltage.

MX341Sensing InputVoltage190-264V ac max, 1 phase, 2 wireFrequency50-60 Hz nominalPower Input(PMGVoltage140-220V ac max, 3 phase, 3 wireCurrent3A/phaseFrequency100-120 Hz nominalOutputVoltageMax 120V dcCurrentContinuous 2.7 A
Intermittent 6A for 10 secsResistance15 ohms minimumRegulation+/- 1%Thermal Drift0.02% per Deg. C change
In AVR ambient0.03% per Deg. C change
In AVR ambientSoft Staret Ramp Time3 secondsTypical system responseAVR response10msFiled current to 90%80 msMachine Volts to 97%300msExternal voltage adjustment+/-10% with 1k ohm 1 watt trimmerUnder frequency protectionSet point95% HzSlope170% down to 30 HzUnit power dissipation12 watts maximumAnalogue InputMaximum input+/- 5 VdcSensitivity1v for 5% Generator Volts (adjustable)Input resistance1k ohmQuadrature Droop Input10 ohms burdenMax. sensitivity: 0.22 A for
5% droop 0PFMax. sensitivity: 0.07 A for
5% droop 0PFMax. input: 0.33AEnvironmentalVibration20-100 Hz,50mm/se100Hz - 2kHz, 3.3gOperating temperature-40 to +70 Deg. CRelative Humidity 0-70 Deg.
C95%Storage temperature-55 to +80 Deg. C
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