| Customization: | Available |
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| Generator Brand: | AVR Sx440 Generator |
| Function: | Diesel Generator Parts of AVR |
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Automatic Voltage Regulator Sensing Input 120V or 240V
SX440 self excited brushless type genset voltage regulator is a compatible replacement for SX440.
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roduct Name
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Generator Parts of AVR SX440
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Sensing/Power input
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Voltage
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190 to 264 Vac,1 phase 2 wire jumper selectable
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Frequency
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50/60 Hz jumper selectable
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Output
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Voltage
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Max. 90 Vdc @ 207 Vac input
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Current
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Continuous 4A,Intermittent 6A for 10 seconds
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Voltage Regulation
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< +/-1% (with 4% engine governing)
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* 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
SX440 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brush-less generator. In addition to regulating the generator voltage, the AVR circuitry includes under-speed and sensing loss protection features. Excitation power is derived directly from the generator terminals.
Positive voltage build up from residual levels is ensured by the use of efficient semiconductors in the power circuitry of the AVR.
The AVR is linked with the main stator windings and the exciter field windings to provide closed loop control of the output voltage with load regulation of +/-0.5%.
In addition to being powered from the main stator, the AVR also derives a sample voltage from the output windings for voltage control purposes. In response to this sample voltage, the AVR controls the power fed to the exciter field, and hence the main field, to maintain the machine output voltage within the specified limits, compensating for load, speed, temperature and power factor of the generator.
A frequency measuring circuit continually monitors the generator output and provides output under-speed protection of the excitation system, by reducing the output voltage proportionally with speed below a pre-settable threshold. A manual adjustment is provided for factory setting of the under frequency roll off point, (UFRO). This can easily be changed to 50 or 60 Hz in the field by push-on link selection.
Provision is made for the connection of a remote voltage trimmer, allowing the user fine control of the generator's output.
Technical specification
INPUT
Voltage: 170-250V AC max
Frequency: 50-60 Hz nominal
Phase: 1
Wire: 2
OUTPUT
Voltage: Max 90V DC at 207V AC input
Current: Continuous 4 A DC
Transient: 6 A for 10 secs
Field Resistance: 15 ohms minimum
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REGULATION: (See Note 1) +/-1.0%
THERMAL DRIFT
(after 10 min)
1% for 40º C change in AVR ambient
TYPICAL SYSTEM RESPONSE
AVR response: 20 ms
Filed current to 90%: 80 ms
Machine Volts to 97%: 300 ms
EXTERNAL VOLTAGE ADJUSTMENT(see note 2)
+/-8% with 1 k ohm 1 watt trimmer
UNDER FREQUENCY PROTECTION
Set point (see note 3): 95% Hz
Slope: 170% down to 30 Hz
UNIT POWER DISSIPATION
12 watts maximum
BUILD UP VOLTAGE
3.5 Vac @ AVR terminals
ACCESSORY INPUT
+/- 1V = +/- 13% change in output volts
QUADRATURE DROOP SENSITIVITY
Maximum sensitivity (10 Ohm Burden)
0.07A for 5% droop @ 0p. F.
ENVIRONMENTAL
Vibration 20 -100 Hz 50mm/sec
100Hz -2kHz 3.3G
Operating temperature: -40º C to +70º C
Relative Humidity: 0-60º C 95%
Storage temperature: -55º Cto +80º C
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.
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