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Automatic Voltage Regulator Stanford-sx460

Posted at: Offers to Sell and Export | Posted on: Sat 04 Jul, 2009 1:06 am | Product Category: Voltage regulator [92]
voltage regulator stanford sx460
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Stamford avr sx460

Product Description

SX460 General description

SX460 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 +/-1.0%.

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


Voltage: Jumper selectable 95-132V ac or 190-264V ac

Frequency: 50-60 Hz nominal

Phase: 1


Voltage: Max 90V dc at 207V ac input

Current: Continuous 4 A dc

Intermittent 6 A for 10 secs

Resistance: 15 ohms minimum


+/-1.0% (see note 1)

Thermal drift

0.05% per deg. C change in AVR ambient (note 2)

Typical system response

AVR response: 20 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

10 watts maximum

Build up voltage

4 Volts @ AVR terminals


Vibration: 20-100 Hz 50mm/sec

100Hz -2kHz 3.3g

Operating temperature: -40 to +70o C

Relative Humidity: 0-70o C 95% (see note 5)

Storage temperature: -55 to +80o C


1. With 4% engine governing

2. After 10 minutes.

3. Applies to Mod status F onwards. Generator de-rate may apply. Check with factory.

4. Factory set, semi-sealed, jumper selectable

5. Non condensing.

Company Contact:

No member photo
Contact Name: Xuesong Zhou
Company Name: Chongqing Kang Famous Commerce Co., Ltd.
Email: Email
Tel: 86-023-65017500
Mobile: 15178817249
Fax: 86-023-65017059
Street Address: The Lettuce Groove
Industrial Park, Tongjiaqiao Street,
Martyrs Tomb Road, Shapingba Of
Chongqing, China
Website: http://www.cqkms.com
Member name: cqkms
Country: China-CN China
Member Since: 03 February 2009
Total Leads: 52 cqkms Import Export Business Leads
Business focus: Cummins Overhaul Accessories, Assembly Parts, Filter, Crankshaft, Connecting Rod, Fuel Injection
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Product Category: Voltage regulator [92]

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