Basler SR4A-2B16B3A Static Voltage Regulator

The Basler SR4A-2B16B3A 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.

The regulator features robust construction with protection functions including over‑excitation limiting and V/Hz protection. It includes potentiometers for voltage setpoint and stability adjustment. The SR4A‑2B16B3A is designed for panel mounting with screw terminals for easy connection.

Technical Specifications

• Model: SR4A-2B16B3A

• Control mode: AVR (automatic voltage regulation)

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

• Field output: Up to 5 A continuous

• Regulation accuracy: ±1% 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

• Precise regulation: Maintains voltage within ±1% of setpoint.

• Voltage build‑up: Self‑excitation from residual voltage.

• Protection: Prevents over‑excitation and over‑fluxing.

• Compact size: Easy installation in control panels.

Typical Applications

• Small diesel gensets: Standby power for residential and commercial.

• Portable generators: Mobile power for construction.

• Agricultural generators: Power for irrigation.

Installation and Configuration

Mount the regulator on a panel. Connect the voltage sensing and field wiring. Adjust the voltage and stability controls.

Compliance

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

Conclusion

The Basler SR4A-2B16B3A offers reliable, cost‑effective voltage regulation for small to medium generators.