E000-23212/1P (MX321) Stamford AVR Voltage Regulator

The MX321 Stamford AVR card is a high-performance and reliable Automatic Voltage Regulator (AVR) designed for use with Stamford alternators. It continuously monitors the generator output voltage and automatically adjusts the excitation current, ensuring stable and precise voltage regulation even under sudden load changes. Widely used in industrial generator applications, the MX321 offers long service life thanks to its robust design and advanced protection features.

Technical Features and Operating Principle

The MX321 AVR regulates the alternator output voltage by controlling the excitation current applied to the rotor windings. This allows the system to minimize voltage fluctuations during load variations and maintain consistent power quality.

Sensing Voltage: 190 – 264 VAC

Frequency: 50 / 60 Hz (auto sensing)

Voltage Regulation Accuracy: ±1%

Excitation Current: Max. 5 A continuous

Soft Start: Prevents sudden voltage rise during generator start-up

Under Frequency Protection (U/F): Automatically reduces voltage at low engine speed to protect the alternator

EMI Suppression: High resistance to electrical noise and interference

Compatibility and Applications

The MX321 Stamford AVR card is fully compatible with Stamford HC, UCI, and UCM series alternators and is suitable for a wide range of power generation applications, including:

Diesel and gas generator sets

Industrial power systems

Standby and emergency power generators

Construction sites, hospitals, and data centers

Key Advantages

High-precision voltage regulation

Durable design for harsh operating conditions

Easy installation and adjustment

Full compatibility with original Stamford systems and equivalent replacements

Stock Status : Call for current stock information.

Brand : Stamford

Category : Stamford AVR Voltage Regulators

E000-23212/1P (MX321) Stamford AVR Voltage Regulator