Basler SR4A-2B16B3E Static Voltage Regulator

The Basler SR4A-2B16B3E is a solid‑state static voltage regulator designed for brushless synchronous generators. This regulator provides automatic voltage regulation (AVR) with high accuracy and fast response, ensuring stable generator output voltage for standby and prime power applications in industrial, marine, and commercial settings.

The regulator features robust construction with advanced protection functions including over‑excitation limiting, V/Hz protection, and loss‑of‑sensing detection. It includes potentiometers for voltage setpoint and stability adjustment, as well as LED indicators for status monitoring. The SR4A‑2B16B3E is designed for panel mounting with screw terminals for easy connection.

Technical Specifications

• Model: SR4A-2B16B3E

• Control mode: AVR (automatic voltage regulation)

• Voltage sensing: 120/240 V AC (single‑phase or 3‑phase)

• Field output: Up to 5 A continuous

• Regulation accuracy: ±0.5% of setpoint

• Protection: Over‑excitation, V/Hz, loss of sensing

• Adjustments: Voltage setpoint, stability

• Power supply: Self‑excited from generator sensing

• LED indicators: Power, excitation, fault

• Operating temperature: -40°C to +70°C

• Certifications: CE, UL, RoHS

Functional Features

• High accuracy: Maintains voltage within ±0.5% of setpoint.

• Fast transient response: Quickly corrects voltage deviations.

• Built‑in protection: Over‑excitation and V/Hz limiters protect generator.

• Compact design: Suitable for space‑constrained panels.

Typical Applications

• Small to medium diesel gensets: Standby and prime power.

• Marine generators: Shipboard power systems.

• Industrial generators: Voltage control for plant power.

Installation and Configuration

Mount the regulator on a panel. Connect the voltage sensing, excitation output, and power supply. Adjust the voltage and stability controls for optimal regulation.

Compliance

Complies with EMC standards, IEEE 421.5, CE and UL approved, RoHS compliant.

Conclusion

The Basler SR4A-2B16B3E provides reliable, high‑performance voltage regulation for brushless generators.