The Genuine Stamford MX321-2 (Part No. E000-23212) is a state-of-the-art, three-phase thyristor Automatic Voltage Regulator (AVR). Designed as a core component of the brushless generator excitation system, it delivers unparalleled performance, precision, and reliability. Engineered to work with Permanent Magnet Generator (PMG) systems, the MX321-2 ensures low Radio Frequency Interference (RFI) and immunity to non-linear loads, making it the premium choice for critical power generation applications .
Features & Benefits
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Superior Precision: Utilizes true RMS three-phase sensing for voltage regulation accuracy of better than ±0.5%, ensuring stable output under varying load conditions .
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Comprehensive Protection: Built-in protective features provide peace of mind, including overvoltage protection, over-excitation shutdown, under-frequency (UFRO) protection, and current limiting for short circuit protection .
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Advanced Functionality: Incorporates soft-start voltage build-up, voltage recovery time control, and de-flashing capabilities, offering performance beyond standard AVRs like the SX440 .
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Flexible Configuration: Features selectable terminals for 50/60 Hz operation and stability matching to optimize performance for a wide range of generator sizes from 90kW to over 550kW .
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | E000-23212 |
| Model | MX321-2 |
| Power Input (PMG) | 170-220V AC, 3-Phase, 3A/Phase |
| Sensing Input | 170-250V AC, 1 or 3-Phase, 50/60 Hz |
| Output | Max 120V DC, Continuous 3.7A, 6A for 10 Seconds |
| Voltage Regulation | < ±0.5% |
| Protections | Overvoltage, Overexcitation, Under-frequency, Current Limit |
Applications
The MX321-2 is ideal for use in a variety of sectors, including:
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Standby and Prime Power Generators
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Marine and Offshore Power Systems
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Industrial and Telecommunications Backup Power
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Rental Generator Fleets
