The Basler Electric DECS--C is a microprocessor-based digital excitation control system designed to regulate the output voltage, reactive power (VARs), or power factor of synchronous generators by controlling the DC excitation applied to the generator’s exciter field. This versatile unit is suitable for a wide range of generator sizes and applications, offering precise control and comprehensive protection features.

Key Features

Flexible Output Voltage Options: Supports  VDC,  VDC, or  VDC outputs at  ADC, accommodating various excitation requirements.
High Regulation Accuracy: Achieves ±.% voltage regulation accuracy over the load range at rated power factor and constant generator frequency.
Multiple Operating Modes: Includes Automatic Voltage Regulation (AVR), Field Current Regulation (FCR), VAR, and Power Factor (PF) control modes.
Advanced Protection Functions: Features overvoltage, undervoltage, overcurrent, loss of sensing, and exciter diode monitoring protections.
Comprehensive Monitoring: Provides sequence of events recording (up to events) and oscillography (up to records) for detailed analysis.
Communication Interfaces: Equipped with RS- and RS- ports, supporting Modbus protocol for remote monitoring and control.
User-Friendly Interface: Front panel includes a backlit LCD display, navigation buttons, and LEDs for easy operation and status indication.

Technical Specifications

Control Power Input:
- – VDC ( W)
- – VAC, / Hz ( VA)
- – VDC ( W)
Operating Power Input:
-  VDC Output:  VAC (– VAC ±%),  VA
-  VDC Output:  VAC (– VAC ±%), , VA
-  VDC Output:  VAC (– VAC ±%), , VA
Voltage Sensing Input: Single-phase or three-phase line voltage, with nominal ranges of  V,  V,  V, and  V at / Hz
Current Sensing Input:  A or  A AC, / Hz
Analog Setpoint Inputs: ± VDC or – mA
Contact Inputs: contact inputs,  VDC
Communication Ports:
- COM: RS- (front panel)
- COM: RS- (side panel)
- COM: RS- (side panel), Modbus protocol
Operating Temperature: - °C to + °C
Dimensions: Approximately  mm (W) ×  mm (D) ×  mm (H)
Weight: Approximately . kg

Applications

The DECS--C is ideal for applications requiring precise excitation control, such as:

Power Generation Plants: Ensuring stable voltage and reactive power control for synchronous generators.
Industrial Facilities: Maintaining power quality and reliability in manufacturing and processing plants.
Marine and Offshore Systems: Providing dependable excitation control in challenging environments.

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