Basler SR4A-2B15B3A Static Voltage Regulator

The Basler SR4A-2B15B3A is a static voltage regulator designed for small to medium-sized synchronous generators operating at 120 V AC, 50/60 Hz. This compact regulator provides reliable automatic voltage regulation (AVR) for standby and prime power generators, ensuring stable output voltage under varying load conditions. The SR4A series is known for its robust design, simple installation, and cost-effectiveness.

The regulator features solid-state construction with basic protection functions including over-excitation limiting and V/Hz protection. It includes a potentiometer for voltage adjustment and LED indicators for status monitoring. The SR4A-2B15B3A is designed for easy panel mounting with screw terminals for all connections.

Technical Specifications

• Model: SR4A-2B15B3A

• Control mode: AVR (automatic voltage regulation)

• Voltage sensing: 120 V AC (single-phase)

• Frequency: 50/60 Hz

• Field output: Up to 5 A

• Regulation accuracy: ±1% of setpoint

• Protection: Over-excitation, V/Hz

• Adjustments: Voltage setpoint, stability (gain)

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

• Dimensions: 120 x 100 x 50 mm

• Certifications: CE, RoHS

Functional Features

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

• Easy adjustment: Potentiometer for voltage setpoint and stability.

• LED indicators: Visual status of power and fault conditions.

• Protection: Built-in over-excitation and V/Hz limiting.

Typical Applications

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

• Portable generators: Mobile power for construction and events.

• Agricultural generators: Power for irrigation and farm equipment.

Installation and Configuration

Mount the SR4A-2B15B3A in the generator control panel. Connect the voltage sensing wires to the generator output, the excitation leads to the exciter field, and the power supply. Adjust the voltage potentiometer to the desired output. Adjust the stability control for smooth regulation.

Compliance

Complies with EMC standards, CE approved, RoHS compliant.

Conclusion

The Basler SR4A-2B15B3A provides reliable, cost-effective voltage regulation for small generators, offering essential AVR functionality and protection.