The GE D25 is a versatile Multifunction Intelligent Electronic Device (IED) designed for substation automation, control, and monitoring. Operating as a combined Bay Controller, RTU (Remote Terminal Unit), and PLC, the D25 is a cornerstone of the GE Grid Solutions portfolio. This specific configuration (D25913UE44U3FFBUU1BUA) is a highly customized assembly, integrating specific I/O counts, communication protocols, and power supply options tailored for complex utility and industrial grid management.
Model Configuration Breakdown
The alphanumeric string specifies the precise hardware build of this unit:
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D25: Base Multifunction IED Platform.
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9: Case Size (Standard 19-inch rack mount).
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13: Power Supply Type (Typically High Voltage DC/AC).
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U/E/4/4: Specific I/O configurations, detailing the number of Digital Inputs (DI), Digital Outputs (DO), and Analog Inputs (AI).
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U3: Processor and Memory specification for high-speed logic execution.
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FF: Communication Port 1 & 2 configuration (e.g., RS-232, RS-485, or Fiber Optic).
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BU: Protocol support (often including DNP3, IEC 61850, or Modbus).
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UA: Specific firmware/software functional package (e.g., advanced automation or specialized metering).
Product Specifications (Datasheet)
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Model: D25913UE44U3FFBUU1BUA
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Functions: RTU, Gateway, Bay Controller, Meter, and PLC.
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Processor: High-speed RISC architecture for real-time processing.
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Dimensions: 482 mm x 177 mm x 250 mm (Standard 4U Rack height).
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Weight: Approximately 8.5 kg (varies by I/O density).
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I/O Capacity: Scalable up to 96 Digital Inputs or various combinations of AI/AO/DO.
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Operating Temperature: -20°C to +70°C (Extended industrial range).
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Accuracy: 0.2% for standard power measurements.
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Time Synchronization: Supports IRIG-B and NTP/SNTP for high-resolution event logging.
Key Application Fields
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Substation Automation: Acts as a centralized controller for managing breakers, disconnects, and transformers.
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Data Gateway: Translates data between legacy serial devices and modern Ethernet-based SCADA systems.
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Load Shedding: Executes high-speed logic for automated load management during grid instability.
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Distributed Generation: Monitoring and controlling the integration of solar or wind farms into the main grid.
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Sequence of Events (SOE): Recording millisecond-accurate timestamps for fault analysis and reporting.
Product Usage Instructions
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Mounting: Install the unit into a standard 19-inch equipment rack. Ensure there is at least 1U of spacing above and below the unit if operating in high-temperature environments.
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Wiring I/O: Connect field sensors and control circuits to the rear terminal blocks. Use shielded cables for analog inputs to prevent interference from high-voltage switchgear.
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Communication Setup: Connect to the SCADA network via the specified ports (Serial or Ethernet). Configure the baud rates and station addresses to match the master station requirements.
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Logic Programming: Use the ConfigPro or WESMAINT software tools to develop custom automation logic and map data points for the communication protocols.
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Grounding: Connect the heavy-duty ground lug on the rear of the chassis to the substation ground bus to protect the electronics from transients and surges.
Q&A: Frequently Asked Questions
Q: Can the D25 support IEC 61850 GOOSE messaging? A: Yes, depending on the firmware package (specified by the “UA” code), the D25 can act as an IED for peer-to-peer GOOSE messaging in modern automated substations.
Q: What happens if the power supply fails? A: The D25 is designed for high-availability environments. Most utility configurations use redundant power supplies or are connected to a station battery system (110V/125V DC) to ensure continuous operation.
Q: Is it possible to expand the I/O after installation? A: The D25 is modular. While adding I/O involves hardware changes (adding cards), the system architecture supports expansion modules like the D20 I/O peripherals.
Q: How do I access the diagnostic logs? A: Diagnostics can be accessed locally via the front-panel maintenance port or remotely through the integrated web server or SCADA protocol.
Secure the reliability of your grid with the D25913UE44U3FFBUU1BUA and other professional-grade GE substation automation hardware.
Similar Model Recommendations
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GE D20: The classic RTU platform, often used alongside the D25 for distributed I/O.
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GE D400: A high-performance substation gateway designed for massive data concentration.
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SEL-3530: A comparable Real-Time Automation Controller (RTAC) from Schweitzer Engineering Laboratories.
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GE B30: A dedicated bus differential relay that often communicates with the D25 for total bay control.
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GE D25-9-13-X: Other variants of the D25 with different I/O counts for smaller or larger bay applications.
