AVR AS480 Automatic Voltage Regulator for Stamford Diesel Generator

(1 customer review)


Availability: 19 in stock

Original Option
**Genuine Alternative:** This AVR AS480 is a high-quality aftermarket replacement for the original Stamford voltage regulator.

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SKU: AVR_AS480 Category: Tags: ,


The AVR AS480 is a half-wave phase-controlled AVR which forms part of the excitation structure of the brushless generator. Which also incorporates an interface to the optional excitation boost system(EBS) for the use where short-circuit current safeguarding is required. Positive voltage build up from residual levels is ensured by the use of proficient semiconductors in the power circuitry of the AVR.

The control and voltage sensing circuits have separate terminals,allowing the excitation power to be resulting directly from the stator winding for necessary applications or from an auxiliary winding if sustained short circuit performance is essential. Which is linked with the main stator windings and the exciter field windings to offer closed loop control of the output voltage with load regulations of +/- 1.0%, In response to his sample voltage, the AVR controls the power fed to the exciter field, and hence the main field, to sustain the machine output voltage within the specified limits, compensating for load, speed, temperature and power factor of the generator.


• Overload voltage protection for safer use
• Clown speed protection for better protection of the generator
• The voltage range is adjustable and the use is more flexible.
• High voltage stability, safe and reliable
• The voltage frequency is 50HZ/60HZ adjustable

Specification Model: AS480
Detection and power input: 120 (95-132) / 240 (190-264) V AC single-phase Selection through two-wire to jumper copper
Magnetic field output: voltage 207V AC input maximum 90V DC
Current: 4A in a row and 10A in 10 seconds in a row
Pressure regulation accuracy: <±1% RMS (with generator speed variation within 4%)

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1 review for AVR AS480 Automatic Voltage Regulator for Stamford Diesel Generator

    November 17, 2022
    These arrived packaged well and are in brand new condition. Out of the package they look as good as OEM parts. I will update this once I get them installed and see how they perform. I purchase most of my repair parts from Cat for my skid but thought I would give these a try and see how well they worked
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