Basler SR8A‑2B15B3A Static Voltage Regulator

The Basler SR8A‑2B15B3A is a static voltage regulator designed for brushless synchronous generators requiring high‑performance excitation control. It is part of the SR8A series, recognized for its fast transient response and reliable voltage regulation under varying load conditions. This model provides comprehensive adjustments for voltage setpoint, stability, and droop.

Key Features

The regulator offers adjustable voltage setpoint, stability compensation, and droop control for parallel operation. It includes over‑excitation protection, under‑excitation limiting, and a soft‑start function. Status LEDs provide immediate visual indication of power, regulation, and fault conditions. The unit is housed in a rugged enclosure suitable for panel mounting.

Technical Specifications

Input voltage sensing: 110‑480 VAC, 50/60 Hz. Auxiliary power: 120‑240 VAC. Output voltage: up to 150 VDC. Continuous current: 5 A, peak 10 A. Regulation accuracy: ±0.5%. Response time:<30 ms. Operating temperature: -40°C to +70°C. Enclosure: IP20.

Operating Principles

The regulator compares sensed generator voltage with an internal reference. Any deviation generates an error signal that adjusts the firing angle of the SCR bridge, modulating the exciter field current. The control loop employs a PID algorithm for stable performance. Droop compensation adjusts the voltage setpoint proportionally to reactive current.

Applications

Used in standby generator sets, prime power plants, and marine electrical systems. Suitable for data centers, healthcare facilities, and offshore platforms.

Installation and Configuration

Mount the regulator on a panel. Connect sensing, power, and field wiring. Adjust voltage setpoint, stability, and droop using trimpots. A load bank test is recommended for fine‑tuning.

Maintenance and Reliability

Solid‑state design ensures high reliability with no moving parts. Routine maintenance includes visual inspection and cleaning.

Conclusion

The Basler SR8A‑2B15B3A static voltage regulator delivers dependable excitation control with precision and durability for demanding generator applications.