Basler DECS-200 Voltage Regulator

The Basler DECS-200 is a digital voltage regulator designed for synchronous generators, providing precise automatic voltage regulation (AVR) with a wide input range of 56-277 V AC or 125 V DC. This versatile regulator offers excellent voltage stability, fast transient response, and comprehensive protection functions in a compact package. It is suitable for a wide range of generator applications including standby, prime power, and marine systems.

The unit features a high-performance processor with advanced PID control, ensuring stable generator output voltage under varying load conditions. It includes a simple front-panel interface with LED indicators and pushbuttons for local adjustment and monitoring. The DECS-200 supports both self-excited and separately-excited generator configurations, offering flexibility for various generator types and sizes.

Technical Specifications

• Model: DECS-200

• Input voltage (power supply): 56-277 V AC or 125 V DC (automatic selection)

• Control mode: AVR (automatic voltage regulation)

• Voltage sensing: 3-phase or single-phase, 0-600 V AC

• Regulation accuracy: ±0.5% of setpoint

• Field output: Up to 15 A continuous

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

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

• Communication: Modbus RTU (RS-485) optional

• LED indicators: Power, excitation ON, fault

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

• Dimensions: 150 x 120 x 60 mm

• Certifications: CE, UL, RoHS

Key Features

• Wide Input Range: Accepts 56-277 V AC or 125 V DC, allowing use with various power sources and battery systems.

• Precise Voltage Control: Advanced PID control provides stable output voltage with minimal deviation under load changes.

• V/Hz Limiter: Protects the generator and connected equipment from overfluxing during underfrequency conditions.

• Droop Control: Adjustable reactive power droop for parallel operation with other generators.

• Soft Start: Controlled voltage build-up during startup to reduce mechanical stress and electrical transients.

Typical Applications

• Diesel and gas gensets: Voltage regulation for standby and prime power applications.

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

• Hydroelectric generators: Voltage regulation for small hydro plants.

• Industrial cogeneration: Coordinated voltage control with plant power systems.

Installation and Configuration

Mount the DECS-200 on a panel using the provided brackets. Connect the voltage sensing wires to the generator output, the power supply to the appropriate AC or DC terminals, and the excitation output to the exciter field. Configure the voltage setpoint using the front-panel potentiometer. Adjust the gain and damping controls for optimal regulation. The droop control is adjusted for parallel operation. The unit's LED indicators provide visual status feedback.

Compliance

Complies with EN 61000-6-2/4, IEEE 421.5, CE and UL approved, RoHS compliant.

Conclusion

Basler DECS-200 voltage regulator offers a versatile, reliable, and cost-effective solution for generator voltage regulation with wide input voltage compatibility. Its robust design and essential protection features make it a practical choice for a variety of generator applications.