Generator Parts AVR 321 Mx321 AC Automatic Voltage Regulator Mx321

• Customization: Available
• Generator Brand: AVR Mx321
• Function: Paralleling Fucntion
• Model NO.: MX321
• Warranty: 1 Year
• Phase: Three Phase
• Quality Class: Grey Capacitor, Red for Option
• Capacitor Color: Mx321
• Product Name: Generator AVR Mx321
• Gum Type: Hard Gum, Soft for Option
• Stock: Stock Supply for AVR Mx321
• Certificate: CE, RoHS, ISO9001
• Transport Package: Each Packed Into Box
• Trademark: VISION
• Origin: China

Product Description

Product Description

AVR MX321

Automatic Voltage Regulator Sensing Input 120V or 240V
 

MX321 self excited brushless type genset voltage regulator is a compatible replacement for  MX321.

Product Name	Generator Parts AVR 321 MX321 AC Automatic Voltage Regulator
Sensing/Power input	Voltage	190 to 264 Vac,1 phase 2 wire jumper selectable
		Frequency	50/60 Hz jumper selectable
Output	Voltage	Max. 90 Vdc @ 207 Vac input
		Current	Continuous 4A,Intermittent 6A for 10 seconds
Voltage Regulation	< +/-1% (with 4% engine governing)

Features

* Voltage regulation < +/-1%
* Soft start voltage ramping
* Sensing voltage loss protection
* 120 or 240 Vac sensing, jumper selectable
* Under frequency roll off protection
* With under frequency LED indicator

Products Show

 

 

The MX321 is a three phase, thyristor type Automatic Voltage Regulator (AVR) 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. Excitation power is derived from a permanent magnet generator (PMG) to guarantee low Radio Frequency Interference (RFI) and immunity from thyristor type loads.

The AVR is linked with the main stator windings and controls the power fed to the exciter stator and hence the main rotor to maintain the machine 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.

Sustained overvoltage caused by open circuit sensing terminals is avoided by overvoltage detection circuitry which provides internal shutdown of the AVR output device.

Current limiting may be included to allow control over the amount of short circuit current flowing during three phase and single phase short circuits on the generator output.

Uncontrolled over excitation is limited to a safe period by internal shutdown of the AVR output device. This condition remains latched until the generator has been stopped.

For complete protection, a circuit breaker option is available providing circuit isolation in event of a short circuit power device.

Provision is made for the connection of a remote voltage trimmer allowing the user fine control of the generator's output.

Accessories are available for this AVR. Please refer to factory for further details.

*The stated voltage regulation may not be maintained in the presence of certain transmitted radio signals. Any change in regulation will fall within the limits in Criteria B of EN50082-2.

TECHNICAL SPECIFICATION

SENSING INPUT
Voltage: 170-250 V AC max
Frequency: 50-60 Hz nominal
Phase: 1 or 3
Wire: 2 or 3

POWER INPUT (PMG)
Voltage: 170-220 V AC
Current: 3 A/phase
Frequency: 100-120 Hz nominal
Phase: 3
Wire: 3

OUTPUT
Voltage: Max 120 V DC
Current: Continuous 3.7 A (See note 3)
Transient: 6 A for 10 seconds
Field Resistance: 15 Ohms minimum

REGULATION(See Note 1) +/- 0.5% RMS*

THERMAL DRIFT
(after 10 min)
0.5% for 40º C change in AVR ambient
SOFT START RAMP TIME
0.4 - 4 seconds

TYPICAL SYSTEM RESPONSE
Field current to 90% 80ms
Machine Volts to 97% 300ms

EXTERNAL VOLTAGE ADJUSTMENT
+/- 6% with 4.7 K Ohms trimmer

UNDER FREQUENCY PROTECTION
Set Point (see note 2) 95% Hz
Slope 100-300% down to 30 Hz
Dwell (Recovery) 0.5-2.0 seconds

UNIT POWER DISSIPATION
18 watts maximum
A

CCESSORY INPUT
+/- 1 V = +/- 5% change in output volts

QUADRATURE DROOP
Maximum sensitivity (10 Ohms Burden)
0.22 A for 5% droop @ 0p. F.

CURRENT LIMIT
Sensitivity range (10 Ohms Burden) 0.45 A - 1 A

OVER VOLTAGE PROTECTION
Set Point 300 V
Time Delay (fixed) 1 second
Circuit breaker trip coil voltage 40-60 vdc
Circuit breaker trip coil resistance 50-100 Ohms

OVER EXCITATION PROTECTION
Set Point 75 V DC
Time Delay (fixed) 8-15 seconds

ENVIRONMENTAL
Vibration: 20 - 100 Hz 50mm/sec
100 - 2 kHz 3.3G
Relative Humidity: 0- 60º C 95%
Operating Temperature: -40 to +70º C
Storage Temperature: -55 to +80º C

 

 

 

 

 

Sophie Huang

 

 

 

 

 

 

QQ                        : 1192242632

FUAN VISION MACHINERY & ELECTRIC CO.,LTD established in June 2015, which is dealing the International Trade for the factories of MOTOR, RECTIFIER, AVR CONTROLLER and other spare parts. The company and factory has over 200 employees, 2014 annual turnover was more than 10 million US dollars and showing the increasing trend year by year. The head office of company is located in the biggest financial center of Asia - Hong Kong, and has office in China mainland. Company mainly deal in motors, generators, generator sets, water pumps,generator spare parts and other mechanical&electrical products, also provide the affordable products customized according to customer requirements. The company has a stable sales network in the market of Asia, the Middle East, Europe, US and other countries, and has established a long-term, stable, good business relationship with customers. Since established, the company is committing to diversified business, expanding export and developing the international market. The company always adhere to the quality of survival, the credibility of development, the faithfully and high efficiency service as premise, continuously innovating in the fierce market competition, and won the good reputation by our customers and peers. The company supported by experienced and powerful suppliers, provide stable quality products to customers all over the world at the dual advantages of price and quality and be a head of the line with quality products at reasonable prices. The company insist to the principle of "people-oriented" and advocate "responsible keeping trust", always being responsible for customers, employees, suppliers and community groups, reaching a company and customers win-win situation.