MA330 Stamford AVR – Automatic Voltage Regulator

OverviewTheSTAMFORD MA330 AVR (E000-13300/1P)is a professional-grade three-phase full wave, pulse width modulated (PWM) automatic voltage regulator designed specifically for Stamford brushless alternators. As a critical component of the excitation system, the MA330 ensures consistent voltage output under varying load conditions, protecting your sensitive equipment from voltage fluctuations and power irregularities. This OEM genuine Stamford AVR utilizes advanced PMG (Permanent Magnet Generator) technology to deliver superior voltage regulation accuracy, ensuring your generator operates at peak performance in industrial, commercial, and standby power applications.Unlike conventional AVRs that rely on line voltage sensing, the MA330 derives its excitation power from a shaft-mounted three-phase permanent magnet generator, which provides a completely isolated and stable power supply to the AVR control circuits. This independent PMG configuration guarantees consistent performance even during short circuits, motor starting, or when supplying highly distorted loads. The pulse width modulation technology employed by the MA330 delivers precise control over the excitation field, resulting in superior voltage regulation, reduced harmonic distortion, and enhanced transient response. Whether you're maintaining critical backup power systems, running industrial machinery, or powering construction sites, the Stamford MA330 AVR provides the reliability and precision voltage control that modern applications demand.Key SpecificationsSpecificationValueModel NumberMA330 (E000-13300/1P)Regulation TypeThree-phase full wave, PWMVoltage Regulation Accuracy±0.5% steady stateInput Power SourcePMG (Permanent Magnet Generator)Nominal PMG Voltage190-240V AC (3-phase)Operating Frequency50/60 HzOutput Voltage RangeAdjustable via potentiometerTransient Response100% load acceptance per ISO 8528-5 class G3Operating Temperature Range-40°C to +70°CStorage Temperature Range-55°C to +85°CHumidity Toleran