Basler Electric DECS‑200‑1C – Digital Excitation Control System

The Basler Electric DECS‑200‑1C is a compact digital excitation control system designed for precise voltage regulation of synchronous generators in industrial and commercial applications. This model offers a robust set of features including automatic voltage regulation, reactive power control, and generator protection, all in a cost‑effective package suitable for a wide range of generating sets.

Voltage Regulation and Control Modes

The DECS‑200‑1C provides automatic voltage regulation with a steady‑state accuracy of ±0.25% and a dynamic response settling time of less than 0.5 seconds for a 10% load change. The controller supports multiple operating modes: AVR, manual field control, and reactive power (VAR) control with power factor regulation. An adjustable droop compensation (0‑5%) enables reactive load sharing for parallel generator operation.

Excitation Output

This model provides a controlled DC output for the exciter field, with a continuous rating of 125 V DC at 8 A (12 A for 10 seconds). The output is compatible with both static and brushless excitation systems. A field current limiter with inverse‑time characteristics protects the exciter winding from thermal overload.

Protection Functions

Integrated protection includes under/over excitation limiting (UEL/OEL), V/Hz limiting, loss‑of‑sensing, and generator overvoltage/undervoltage detection. All protection settings are programmable via the front panel or communication software.

User Interface and Communication

A 4‑line LCD display and keypad provide local access. RS‑232 and RS‑485 ports with Modbus RTU support SCADA integration.

Environmental and Mechanical

Operating temperature -20 °C to +70 °C, IP20 rating. CE and UL certified.

Typical Applications

Diesel and gas gensets, hydro turbines, and standby power systems.

Overall, the Basler Electric DECS‑200‑1C offers reliable and precise excitation control for industrial generator applications.