Basler SR8A-2B15B3A Static Voltage Regulator

The Basler SR8A-2B15B3A is a solid-state static voltage regulator designed for medium-sized brushless synchronous generators. This regulator provides precise automatic voltage regulation (AVR) for standby and prime power generators in industrial, marine, and commercial applications. The SR8A series is known for its robust design, simple installation, and reliable performance.

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, a stability control, and LED indicators for status monitoring. The SR8A-2B15B3A is designed for easy panel mounting with screw terminals for all connections.

Technical Specifications

• Model: SR8A-2B15B3A

• Control mode: AVR (automatic voltage regulation)

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

• Field output: Up to 10 A continuous

• Regulation accuracy: ±1% of setpoint

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

• Adjustments: Voltage setpoint, stability (gain), droop

• Power supply: Self-excited from generator sensing

• LED indicators: Power ON, excitation ON, fault

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

• Dimensions: 130 x 100 x 50 mm

• Certifications: CE, UL, RoHS

Functional Features

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

• Voltage build-up: Self-excitation from residual voltage ensures reliable startup.

• Droop adjustment: Enables reactive power sharing in parallel operation.

• Protection: Over-excitation and V/Hz limiters protect the generator.

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

Typical Applications

• Medium diesel and gas gensets: Standby and prime power for commercial and industrial facilities.

• Marine generators: Reliable voltage regulation for shipboard power systems.

• Industrial generators: Voltage control for plant power and cogeneration.

Installation and Configuration

Mount the SR8A-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 (if separate). Adjust the voltage potentiometer to the desired output, and adjust the stability control for smooth regulation. The droop control is used for parallel operation.

Compliance

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

Conclusion

The Basler SR8A-2B15B3A provides reliable, cost-effective voltage regulation for medium-sized generators, offering essential AVR functionality and protection in a robust package.