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AUTOMATIC VOLTAGE REGULATOR ( AVR) MX 341

Update Terakhir
: 22 / 03 / 2019
MX341, AS480, SX460, MX321, AS440, SX421, MA330, SA465, SX440 READY STOCK......! ! ! ! ! ! Our agents stamford * other type will be available on special request This NEW product, , NO SECOND...! ! ! ............. SPECIAL PRICE ! ! ............... General description Technical specification MX341 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. Sustained generator short circuit current is another feature of the PMG system. The AVR senses the voltage in the main generator winding and controls the power fed to the exciter stator and hence the main rotor to maintain 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 smooth controlled build up of generator output voltage. A frequency measuring circuit continually monitors the shaft speed of the generator and provides under-speed protection of the excitation system by reducing the generator output voltage proportionally with speed below a pre-settable threshold. A further enhancement of this feature is an adjustable volts per Hertz slope to improve engine recovery time on turbo charged engines. Soft start circuitry is included to provide a smooth controlled build up of generator output voltage. Uncontrolled excitation is limited to a safe period by internal shutdown of the AVR output device. This condition remains latched until the generator has stopped. Provision is made for the connection of a remote voltage trimmer, allowing the user fine control of the generator' s output. An analogue input is provided allowing connection to a Newage Power Factor controller or other external devices with compatible output. The AVR has the facility for droop CT connection, to allow parallel running with other similarly equipped generators. SENSING INPUT Voltage 190-264V ac max, 1 phase, 2 wire Frequency 50-60 Hz nominal POWER INPUT ( PMG) Voltage 140-220V ac max, 3 phase, 3 wire Current 3A/ phase Frequency 100-120 Hz nominal OUTPUT Voltage max 120V dc Current continuous 2.7 A Intermittent 6A for 10 secs. Resistance 15 ohms minimum REGULATION + / - 1% ( see note 1) THERMAL DRIFT 0.03% per o C change in AVR ambient ( note 2) SOFT START RAMP TIME 3 seconds TYPICAL SYSTEM RESPONSE AVR Response 10 ms Filed current to 90% 80 ms Machine Volts to 97% 300 ms EXTERNAL VOLTAGE ADJUSTMENT + / -10% with 1 k ohm 1 watt trimmer ( see note 3) UNDER FREQUENCY PROTECTION Set point 95% Hz ( see note 4) Slope 170% down to 30 Hz UNIT POWER DISSIPATION 12 watts maximum ANALOGUE INPUT Maximum input + / - 5V dc ( see note 5) Sensitivity 1v for 5% Generator Volts ( adjustable) Input resistance 1k ohm QUADRATURE DROOP INPUT 10 ohms burden Max. sensitivity: 0.07 A for 5% droop 0PF Max. input: 0.33 A OVER EXCITATION PROTECTION Set point 75 V dc Time delay 10 seconds ( fixed) ENVIRONMENTAL Vibration 20-100 Hz 50mm/ sec 100Hz – 2kHz 3.3g Operating temperature -40 to + 70 o C Relative Humidity 0-70 o C 95% ( see note 6) Storage temperature -55 to + 80 o C NOTES 1. With 4% engine governing. 2. After 10 minutes. 3. Applies to Mod status D onwards. Generator de-rate may apply. Check with factory. 4. Factory set, semi-sealed, jumper selectable. 5. Any device connected to the analogue input must be fully floating ( galvanically isolated from ground) , with an insulation strength of 500V ac. 6. Non condensing. * other type will be available on special request This NEW product, , NO SECOND...! ! ! ............. SPECIAL PRICE ! ! ...............
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automatic voltage regulator ( avr) mx 341

Detail AUTOMATIC VOLTAGE REGULATOR ( AVR) MX 341

MX341, AS480, SX460, MX321, AS440, SX421, MA330, SA465, SX440 READY STOCK......! ! ! ! ! ! Our agents stamford * other type will be available on special request This NEW product, , NO SECOND...! ! ! ............. SPECIAL PRICE ! ! ............... General description Technical specification MX341 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. Sustained generator short circuit current is another feature of the PMG system. The AVR senses the voltage in the main generator winding and controls the power fed to the exciter stator and hence the main rotor to maintain 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 smooth controlled build up of generator output voltage. A frequency measuring circuit continually monitors the shaft speed of the generator and provides under-speed protection of the excitation system by reducing the generator output voltage proportionally with speed below a pre-settable threshold. A further enhancement of this feature is an adjustable volts per Hertz slope to improve engine recovery time on turbo charged engines. Soft start circuitry is included to provide a smooth controlled build up of generator output voltage. Uncontrolled excitation is limited to a safe period by internal shutdown of the AVR output device. This condition remains latched until the generator has stopped. Provision is made for the connection of a remote voltage trimmer, allowing the user fine control of the generator' s output. An analogue input is provided allowing connection to a Newage Power Factor controller or other external devices with compatible output. The AVR has the facility for droop CT connection, to allow parallel running with other similarly equipped generators. SENSING INPUT Voltage 190-264V ac max, 1 phase, 2 wire Frequency 50-60 Hz nominal POWER INPUT ( PMG) Voltage 140-220V ac max, 3 phase, 3 wire Current 3A/ phase Frequency 100-120 Hz nominal OUTPUT Voltage max 120V dc Current continuous 2.7 A Intermittent 6A for 10 secs. Resistance 15 ohms minimum REGULATION + / - 1% ( see note 1) THERMAL DRIFT 0.03% per o C change in AVR ambient ( note 2) SOFT START RAMP TIME 3 seconds TYPICAL SYSTEM RESPONSE AVR Response 10 ms Filed current to 90% 80 ms Machine Volts to 97% 300 ms EXTERNAL VOLTAGE ADJUSTMENT + / -10% with 1 k ohm 1 watt trimmer ( see note 3) UNDER FREQUENCY PROTECTION Set point 95% Hz ( see note 4) Slope 170% down to 30 Hz UNIT POWER DISSIPATION 12 watts maximum ANALOGUE INPUT Maximum input + / - 5V dc ( see note 5) Sensitivity 1v for 5% Generator Volts ( adjustable) Input resistance 1k ohm QUADRATURE DROOP INPUT 10 ohms burden Max. sensitivity: 0.07 A for 5% droop 0PF Max. input: 0.33 A OVER EXCITATION PROTECTION Set point 75 V dc Time delay 10 seconds ( fixed) ENVIRONMENTAL Vibration 20-100 Hz 50mm/ sec 100Hz – 2kHz 3.3g Operating temperature -40 to + 70 o C Relative Humidity 0-70 o C 95% ( see note 6) Storage temperature -55 to + 80 o C NOTES 1. With 4% engine governing. 2. After 10 minutes. 3. Applies to Mod status D onwards. Generator de-rate may apply. Check with factory. 4. Factory set, semi-sealed, jumper selectable. 5. Any device connected to the analogue input must be fully floating ( galvanically isolated from ground) , with an insulation strength of 500V ac. 6. Non condensing. * other type will be available on special request This NEW product, , NO SECOND...! ! ! ............. SPECIAL PRICE ! ! ...............
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19 / 07 / 2019
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