Automatic Voltage Regulator AVR Mx321 Mx341 As440 As480 As540 Sx440 Sx460 Stamford Leroy Somer Cat Denyo Marathon Diesel Generator Set AVR Replacement

MX321  SX440 SX460 Stamford/Leroysomer/Kanpor AVR (Automatical voltage regulator) for brushless alterantor   Product Description SX460 is a half-wave phase- controlled thyristor type 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 under speed and sensing loss protection to ensure safe, reliable control of the generator. Positive voltage build up from residual levels is ensured by the use of proficient semiconductors in the power circuitry of the AVR. Which is linked with the main stator windings and the exciter field windings to offer closed loop control of the output voltage with load regulations of +/- 1.5%Stability adjustment    Under frequency roll off adjustment  SX460Input Voltage Jumper selectable  95-132V ac or 190-264V ac Frequency 50-60 Hz nominal Phase1Output Voltage Max 90V dc at 207V ac input Current Continuous 4A dc, intermittent 6A for 10 secs Resistance 15 ohms minimum Regulation  +/- 1.0% Thermal Drift 0.05% per deg. C change in AVR ambient Typical system response AVR response 20ms Filed current to 90% 80 ms Machine Volts to 97% 300ms External voltage adjustment +/-10% with 1 k ohm 1 watt trimmer Under frequency protection Set point 95% Hz Slope 170% down to 30 Hz Unit power dissipation 12 watts maximum 10 watts maximum Build up voltage 4 Volts @ AVR terminalsEnvironmental Vibration 20-100 Hz,50mm/se 100Hz - 2kHz, 3.3g Operating temperature -40 to +70 Deg. C Relative Humidity 0-70 Deg.  C95% Storage temperature -55 to +80 Deg. C*Quadrature droop adjustment*AVR Voltage adjustment*Stability adjustment*LAM Threshold (underspeed) adjustment*Excitation ceiling adjustment*Selection of single phase or three phase**voltage sensing*Selection of normal or rapid response time*50 Hz or 60 Hz frequency option*Remote voltage adjustment option*LAM enable/disable option*Alternator frame selection*Excitation system selectionSpecificaionInput voltage: 70-140V AC, (PMG, or auxiliary winding, single, three phases)Reaction is measured : 90-480V ACMAX. output :DC 10A 125VFunction: Built-in low-speed , over excitationLAM, REGULATION: +/-0.5% Product Description *3 Phase Sensing Permanent Magnet Generator type voltage regulator is a compatible replacement for Newage MX321 and Onan 305-0823.* MX321 is a three 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.  Sensing Input Voltage 190-264V 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 3.7 A,Intermittent 6A for 10 secs Resistance 15 ohms minimum Regulation  +/- 0.5% RMS with 4% engine governing Thermal Drift 0.02% per Deg. C change in AVR ambient Soft Staret Ramp Time 0.4 - 4 seconds Typical system response AVR response 20ms Filed current to 90% 80 ms Machine Volts to 97% 300ms External voltage adjustment +/-10% with 5k ohm 1 watt trimmer Under frequency protection Set point 95% Hz Slope 100%-300% down to 30 Hz Max. Dwell 20% volts/S recovery Unit power dissipation 18 watts maximum Analogue Input Maximum input +/- 5 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: 0.33A Environmental Vibration 20-100 Hz,50mm/se 100Hz - 2kHz, 3.3g Operating temperature -40 to +70 Deg. C Relative Humidity 0-70 Deg.  C95% Storage temperature -55 to +80 Deg. C /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1