Basler Electric SR8A2B10B1A Static Voltage Regulator

The Basler Electric SR8A2B10B1A is a high‑performance static voltage regulator designed for generators with excitation requirements up to 10 A. It provides precise voltage regulation with a typical accuracy of ±0.5% and a fast transient response of less than 40 ms. This regulator is suitable for prime power, continuous duty, and parallel‑operation applications in utility, industrial, and marine environments.

Control Features

The SR8A2B10B1A features a digital‑analog hybrid control with adjustable proportional and integral gains. It includes a voltage setpoint range of 90‑110%, a stability adjustment, and a droop control (0‑5%) for reactive load sharing. An under‑frequency roll‑off with adjustable knee frequency protects the generator during speed dips. The regulator also supports voltage matching to facilitate synchronizing.

Excitation Output

Output voltage: 0‑150 VDC, current up to 10 A continuous. The regulator can drive both brushless and DC exciters. A built‑in current limit protects the field circuit. Output ripple is less than 3% at full load. An external trim resistor can be connected for remote voltage adjustment.

Protection and Diagnostics

Comprehensive protection includes over‑excitation limit, under‑excitation limit, loss of sensing, and over‑temperature. The regulator provides a fault output contact and a diagnostic LED display indicating fault codes for easy troubleshooting. A self‑test function can be initiated manually to verify internal circuitry.

Technical Specifications

Sensing input: 100‑480 VAC, 50/60 Hz, three‑phase or single‑phase. Power supply: same as sensing. Output: 0‑150 VDC, 10 A. Accuracy: ±0.5%. Response time:<40 ms. Operating temperature: –25°C to +65°C. Enclosure: IP20, suitable for panel mounting.

Applications

This regulator is used on diesel generator sets from 200 kVA to 2 MVA, as well as hydro and gas turbine generators. It is ideal for critical power applications in data centres, hospitals, and offshore platforms, where voltage stability is paramount. The SR8A2B10B1A can be integrated into automatic system controls via its auxiliary inputs.

Installation and Commissioning

Mount the regulator in a clean, ventilated panel. Connect the sensing leads, field output, and control inputs. Commissioning involves setting the voltage setpoint, stability, and droop while performing load tests. The regulator includes a test mode for checking excitation without running the generator.

Reliability and Standards

The SR8A2B10B1A complies with IEEE C37.90 and IEC 61000 for EMI/EMC. It is built with industrial‑grade components and is subjected to thermal cycling and vibration tests. Basler Electric backs it with a comprehensive warranty and technical support.

Conclusion

The Basler Electric SR8A2B10B1A static voltage regulator delivers high‑end performance for demanding generator applications. Its flexibility, robust protection, and precise control make it a top‑tier choice for power system engineers.