Basler DECS-200-2C
Basler DECS-200-2C - Image 2

Basler DECS-200-2C

Product Introduction: DECS-200-2C is a microprocessor-based digital excitation controller produced by Basler Electric. It replaces traditional analog AVRs and provides full digital excitation management for synchronous generators. This model supports dual power input and multi-mode excitation control for generator sets and grid-connected power plants.

Request Quote
Category:

Description

Basler DECS-200-2C

Technical Specifications:

  • Sensing: Single or three-phase true RMS voltage and current sensing, direct input up to 600V AC
  • Regulation Accuracy: 0.25% under automatic voltage regulation mode
  • Control Power: 120/240 VAC or 24/48/125 VDC dual input
  • Field Output: PWM power stage, rated 15A DC continuous
  • Sampling Rate: High-speed analog sampling for fast transient load response
  • Communication: RS-232 interface for BESTCOMS configuration software
  • Operating Temperature: -20℃ ~ +65℃
  • Storage Temperature: -40℃ ~ +85℃
  • Humidity: 5%~95% non-condensing

Function Features:

  • Multiple operating modes: Automatic Voltage Regulation, Field Current Regulation, VAR control, Power Factor control
  • Integrated V/Hz ratio limiter, overexcitation limiter and underexcitation limiter
  • Line drop compensation and cross-current droop for generator paralleling
  • Soft start voltage build-up, bumpless mode transfer with auto-tracking
  • Sequence of event recording and oscillography data capture
  • Front panel HMI for local parameter viewing and adjustment
  • 20 preset stability selections plus user custom PID stability tuning

Application Scenarios:

  • Medium-sized synchronous generators for industrial power plants
  • Grid-connected and island mode generator paralleling systems
  • Combined heat and power generation units
  • Excitation upgrade project for existing power station equipment

Material Composition:

  • Housing: Die-cast aluminum alloy powder coated shell
  • Main PCB: FR4 fiberglass multilayer printed circuit board, lead-free soldering
  • Processing Core: Industrial microprocessor, high precision ADC sampling chips
  • Power Section: IGBT power modules, high-speed rectifiers
  • Terminals: Tin plated copper screw terminals

Structural Features:

  • Panel mount metal enclosure, IP20 front protection
  • Front panel with LCD display, function keys and status LED indicators
  • Separate terminal blocks for sensing, control power, field output and communication
  • Standard cabinet cutout for direct replacement of old excitation regulators

Working Principle: The digital controller collects generator voltage and current signals through high-speed ADC sampling. The built-in microprocessor calculates voltage error and executes PID control algorithm. The output signal drives the PWM power stage to adjust exciter field current. Multiple protection limiters run in parallel in software to restrict operating parameters within safe range. Communication port supports remote parameter setup and data recording.

Installation Requirements:

  • Mount in control cabinet, avoid strong magnetic field and heat sources
  • Maintain sufficient air circulation around unit
  • Separate low voltage signal cables from high power cables
  • Ground the equipment according to power station grounding specification
  • Shielded cable recommended for voltage and current sensing wiring

Usage Notes:

  • Complete parameter configuration via BESTCOMS software before commissioning
  • Verify CT and PT ratio settings to prevent measurement error
  • Do not exceed rated field output current
  • Back up parameter files before firmware update
  • Cut off power supply before wiring modification

Related products