The Stamford AVR AS440 is a high‑performance Automatic Voltage Regulator designed for Stamford and compatible generator alternators. It precisely controls generator output voltage, keeping power stable and within set limits under varying load conditions — essential for reliable operation of diesel generators.
Where It Is Used
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Installed on Stamford alternators in diesel generator sets
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Suitable for industrial, commercial and standby generators
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Used in power plants, construction sites, telecom power backup and other critical power applications requiring stable voltage output
Key Functions
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Automatic voltage regulation: Maintains output voltage with load changes
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Closed‑loop control: Continuously samples generator output and adjusts excitation
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Load compensation: Helps prevent voltage spikes and drops under varying loads
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Frequency compatibility: Works with 50 Hz/60 Hz generator systems
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Supports parallel operation: Can be configured for generators running in parallel when required
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