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DATA SHEET
DECS-250N.pdf
BASLER ELECTRIC DECS-250N.pdf
Core Functions and Features
Control and Regulation
- True RMS detection, supporting single-phase or three-phase voltage and current
- Full generator metering function
- Automatic tuning function with two sets of PID stability parameters
- Reactive load sharing via communication
- Five operating modes: Automatic Voltage Regulation (AVR), Field Current Regulation (FCR), Field Voltage Regulation (FVR), Power Factor Control, Reactive Power Control
Protection and Limitation
- Integrated with multiple generator protection functions: 25, 27, 32R, 40Q, 51F, 59, 59F, 81O/U, Excitation Diode Monitoring (EDM), Permanent Magnet Generator Loss, Field Short Circuit Protection
- Configurable protection functions
- Overexcitation limitation (with temperature compensation)
- Underexcitation limitation
- Stator current limitation (with temperature compensation)
- Reactive power limitation
- Low-frequency limitation or Voltage/Frequency (V/Hz) limitation
- Excitation diode monitoring
Operation and Monitoring
Product Advantages
The offline simulator in BESTlogic Plus software helps test and troubleshoot logic issues without the need for expensive hardware.
Reduce setup time with Basler's intuitive BESTCOMSPlus software, which simplifies complex configurations through easy drag-and-drop programmable logic, visual real-time strip chart functions, and advanced automatic PID selection.
The innovative auto-tuning function automatically sets optimal PID and gain parameters, eliminating guesswork in system setup, reducing commissioning time and costs, while maximizing overall system performance.
The powerful 20-amp rectifier bridge provides high positive and negative field forcing capabilities for excellent system response; the negative field forcing capability makes it ideal for use with the optional power system stabilizer.
Technical Specifications
Power Supply
AC Operating Power Supply and DC Output Power
- 63 Vdc
- Full-load continuous voltage: 63 Vdc
- Minimum field resistance: 3.15 Ω
- 125 Vdc
- Full-load continuous voltage: 125 Vdc
- Minimum field resistance: 6.25 Ω
- 250 Vdc
- Power input configuration: Three-phase
- Nominal input voltage: 480 Vac
- Full-load continuous voltage: 250 Vdc
- Power input frequency: 50/60 Hz
- Minimum field resistance: 12.5 Ω
General Output Parameters
- Full-load continuous current: 20 Adc
- 10-second forcing current: 40 Adc
- 120-second forcing current: 30 Adc
Generator and Bus Voltage Detection
- Configuration: Single-phase or three-phase (three-wire)
- Voltage range: 100/120 Vac ±10%, 200/240 Vac ±10%, 400/480 Vac ±10%, 600 Vac ±10%
- Frequency range: Nominal 50/60 Hz
Load: < 1 VA per phase
Generator Current Detection
- Configuration: Single-phase or three-phase, with independent CT inputs for cross compensation
- Current range: Nominal 1 Aac or 5 Aac
- Frequency range: Nominal 50/60 Hz
- Load: 1 Aac detection: <5 VA; 5 Aac detection: <10 VA
Inputs and Outputs
- Contact inputs: 14 programmable inputs (dry contacts)
- Auxiliary inputs: Supports 4 to 20 mA or ±10 Vdc inputs
- Output contacts: 11 programmable Type A contacts and 1 Type C contact for watchdog function
- Rating: Can make, break, and carry 7 A resistive load at 24/48/125 Vdc (120/240 Vac)
Communication Interfaces
- USB: USB Type B
- RS-232: 9-pin Sub D, for optional external automatic tracking
- RS-485: Supports Modbus™ RTU protocol
- CAN bus: 1 port for ECU communication, 1 port for expansion modules
- Ethernet: Standard unit uses 100baseT, optional 100baseFX; supports Modbus TCP protocol or inter-unit communication
- Expansion port: Optional PROFIBUS protocol
Environmental Characteristics
- Operating temperature: -40°C to 60°C (-40°F to 140°F)
- Storage temperature: -40°C to 85°C (-40°F to 185°F)
- Salt fog: Complies with MIL-STD 810E Method 509.3
- Shock: 15 G in three perpendicular planes
- Vibration: 5 G in three perpendicular planes, 3 to 2000 Hz
Physical Characteristics
- Weight: 14.9 pounds (6.75 kilograms)
- Dimensions (Width × Height × Depth): 6.26 inches × 12.00 inches × 8.62 inches (159.0 mm × 304.8 mm × 219.0 mm)
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