Basler Electric SR8A‑2B01B3A Static Voltage Regulator

The Basler Electric SR8A‑2B01B3A is a versatile static voltage regulator designed for synchronous generators with brushless or DC exciters. It offers precise voltage regulation, fast transient response, and a host of adjustable features to accommodate a wide range of generator sizes and system configurations. The regulator is built for reliability in harsh industrial and utility environments.

Regulation and Control

The regulator features a proportional‑integral control with adjustable gain and stability. A droop adjustment (0‑5%) enables parallel operation with reactive load sharing. Under‑frequency roll‑off protects the generator from over‑excitation during speed drops. The voltage setpoint is adjustable from 90‑110% of nominal via front‑panel potentiometer. A remote voltage trim input is provided for external control.

Excitation Output

Output: 0‑150 VDC, up to 8 A continuous (higher for short duration). The output is short‑circuit protected and current‑limited. The regulator includes a field over‑excitation protection and a soft‑start function to prevent voltage overshoot during build‑up. A field current monitor output is available for metering.

Protection and Monitoring

Built‑in protections include loss of sensing, over‑voltage clamping, thermal shutdown, and reverse polarity protection on the DC input. A fault relay output provides remote alarm. LED indicators show power, regulation status, and fault conditions. The regulator also has a self‑test feature for rapid diagnostics.

Technical Specifications

Sensing: 100‑480 VAC, 50/60 Hz. Accuracy: ±0.5%. Response time:<50 ms. Operating temperature: –25°C to +65°C. Enclosure: IP20, panel‑mount. Weight: approximately 2.5 kg. Complies with IEC 61000‑4‑2 for ESD.

Applications

This regulator is used in diesel generator sets from 100 kVA to 1.5 MVA, as well as in wind turbines, hydro plants, and marine auxiliary generators. It is suitable for standby, prime, and parallel operation modes.

Installation and Commissioning

Install in a standard control panel. Connect sensing leads to generator terminals, field leads to exciter, and auxiliary signals as needed. Commissioning involves adjusting the setpoint, stability, and droop while observing generator response under load. The regulator includes a manual test mode.

Reliability and Quality

Basler Electric’s SR8A‑2B01B3A is manufactured with high‑quality components and undergoes rigorous testing. Its solid‑state design ensures long life with minimal maintenance. The unit is backed by Basler’s technical support and documentation.

Conclusion

The Basler Electric SR8A‑2B01B3A static voltage regulator delivers reliable, accurate, and cost‑effective voltage control for a broad spectrum of generator applications, making it a trusted choice for engineers and operators.