Product Description
The DECS-100-B15 by Woodward is a digitally controlled excitation regulator engineered to manage generator field excitation with high accuracy and dynamic response. Designed for both synchronous and induction generator systems, this unit stabilizes terminal voltage, supports reactive power control, and enhances system reliability under fluctuating load conditions.
With integrated protection logic and flexible control modes, the DECS-100-B15 is suitable for critical power applications where stable excitation and fast transient recovery are required. Its rugged design supports operation in harsh industrial environments, including power plants, marine systems, and distributed energy installations.
Key Technical Specifications
- Model: DECS-100-B15
- Manufacturer: Woodward
- Device Type: Digital Automatic Voltage Regulator (AVR) / Excitation Controller
Electrical Characteristics
- AC Supply Input: 120 / 240 VAC (±10%)
- Current Sensing Input: 5 A CT secondary
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Excitation Output:
- 63 VDC @ 7.0 A continuous
- 135 VDC @ 15 A (10 seconds boost)
- Control Signal Output: 0–10 VDC
Control Functions
- Regulation Modes: AVR, Manual Field Current Regulation (FCR), VAR Control, Power Factor (PF) Control
- Response: High-speed digital control loop for transient stability
Communication & Interface
- Interface: RS-232
- Configuration Software: BESTCOMS™
- Protocol Support: Modbus RTU (implementation dependent)
Protection Features
- Overvoltage / Undervoltage
- Overexcitation / Underexcitation
- Loss of sensing
- Generator abnormal condition protection
Mechanical & Environmental
- Dimensions: 135.6 × 274.8 × 72.1 mm
- Weight: 1.1 kg
- Mounting: Panel mount or DIN rail compatible
- Operating Temperature: –40°C to +70°C
- Storage Temperature: –40°C to +80°C
- Enclosure Rating: IP20
- Vibration Resistance: up to 5 G (53–500 Hz)
- Shock Resistance: 20 G
Output & Alarm
- Alarm Relay: Dry contact output, rated 120/240 VAC, 7 A
Application Scenarios
- Industrial generator sets
- Power plants and turbine-driven generators
- Marine and offshore power systems
- Backup and emergency power systems
- Renewable energy integration (e.g., hydro, hybrid systems)
FAQ
Q: What generator types are compatible with the DECS-100-B15? A: It supports both synchronous and induction generators, making it suitable for a wide range of power generation systems.
Q: Does this model support remote monitoring? A: Yes, via RS-232 communication using Woodward BESTCOMS™ software. Modbus integration may be available depending on system configuration.
Q: What distinguishes the B15 variant? A: The B15 version is optimized for higher excitation forcing capability, delivering up to 135 VDC for short-duration boost conditions.
Q: Can it operate in harsh environments? A: Yes, with an operating range down to –40°C and strong vibration/shock tolerance, it is suitable for demanding industrial and field applications.
