The AVR SX440 Automatic Voltage Regulator is a precision electronic regulator designed for brushless generator sets to maintain stable output voltage under load. It automatically controls the excitation system of the alternator, ensuring reliable power delivery and protecting your generator and connected equipment from voltage fluctuations.
Where It Is Used
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Installed in brushless diesel and petrol generator sets
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Compatible with Stamford and similar alternators
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Industrial, commercial and standby power applications
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Generators requiring precise automatic voltage control and load regulation
Key Functions & Features
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Automatic voltage regulation: Maintains output voltage within ±1% for consistent power.
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Stable excitation control: Links stator and exciter field for closed‑loop voltage feedback and adjustment.
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Under‑speed protection: Monitors frequency to safeguard the excitation system at low speeds.
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External adjustment options: Allows fine voltage tuning via remote trimmer or analogue input.
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Durable design: Built for vibration and temperature variations typical in generator environments.
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