D25 | GE Substation Automation Controller for Utility Networks

GE D25 Substation Controller – Product Description

Overview

The GE D25 Substation Controller is a modular, multifunctional IED designed for reliable substation automation. Moreover, it provides bay control, SCADA/DCS integration, and advanced monitoring for both new and retrofit installations. Its flexible architecture allows customization for small distribution substations or large transmission projects.

Technical Specifications

Model Number: D25 Substation Controller
Series: D25 Substation Automation System
Device Type: Intelligent Electronic Device (IED) / Substation Controller

Processing & Architecture:

• High-performance CPU for real-time automation

• Modular, upgradable design supporting up to 65 bays

Communication Interfaces:

• Dual redundant Ethernet ports

• RS-232 / RS-485 serial ports

• Protocols: IEC 61850 GOOSE, Modbus TCP/IP, DNP3.0, IEC 60870‑5‑103

Data Acquisition & Control:

• High-speed acquisition from digital and analog inputs

• Breaker and switchgear control with interlocking logic

• Advanced load shedding and automation schemes

Diagnostics & Monitoring:

• Event recording and fault logging

• Remote monitoring via Ethernet TCP/IP

Environmental Ratings:

• Operating temperature: –40 °C to +70 °C

• Rugged industrial-grade design

Physical Specifications:

• Compact, rack-mountable enclosure

• Modular slots for expansion boards

FAQ

Q1: Can the D25 controller handle large substation automation projects?
Yes, it supports up to 65 bays and scalable modular expansion for large substations.

Q2: Which communication protocols are supported?
It supports IEC 61850 GOOSE, Modbus TCP/IP, DNP3.0, IEC 60870‑5‑103, and RS-232/485.

Q3: Is the controller suitable for harsh environments?
Yes, it operates from –40 °C to +70 °C and features rugged industrial-grade construction.

Q4: Can it integrate with existing SCADA or DCS systems?
Absolutely, dual redundant Ethernet and industry-standard protocols enable seamless integration.

Q5: Does the D25 support fault logging and diagnostics?
Yes, built-in event recording and fault detection improve maintenance efficiency and reliability.