Replace Original Mx321 AVR for Generator Magnetic Alternator

• Customization: Available
• Certification: ISO9001, CE
• Standard Component: Standard Component
• Model NO.: MX321
• Technics: Casting
• Material: Aluminum
• Type: AVR
• Usage: Alternator Regulate
• Package Dimensions: 7.1 X 6 X 2.1 Inches
• Output Voltage: Max 120V DC Current Continuous 2.7A DC
• Sensing Input Voltage: Voltage 190-264V AC Max
• Frequency: 50/60Hz
• Power Input Voltage: 140-220 V AC Max
• Transport Package: in Carton
• Specification: Gross Weight 1 Kg
• Trademark: Stamford
• Origin: China
• HS Code: 90329000
• Production Capacity: 10000/Month

Product Description

*MX321 is a three phase, 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 protective features to ensure

safe reliable control of the generator.

*This AVR is used only in conjunction with permanent magnetic type alternators.

*Excitation power is resulting from a three-phase permanent magnet generator(PMG), to Separate 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 foremost generator winding and controls the excitation to keep the

generator output voltage within the specified limits, compensating for load, velocity, temperature and

power factor of the generator, 3 phase RMS sensing is employed for advanced voltage regulation.

 

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. C	95%
	Storage temperature	-55 to +80 Deg. C

 

 

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