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Overview |
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The D20ME is part of the D20/D200 family of substation automation controllers developed by General Electric (GE) Grid Solutions (now GE Vernova). It serves as the central processing unit (CPU) or “brain” in a substation automation system (also often called a Remote Terminal Unit or RTU). |
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FAQ about D20 ME |
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Q1. What is the D20ME controller used for?The D20ME is used to automate electrical substations by aggregating data from protection relays and I/O modules, executing control logic, and communicating with central control systems (e.g., SCADA). It enables real‑time control and monitoring of grid assets. Q2. How does it interact with other devices in a substation?It connects via serial and network interfaces to IEDs such as protection relays and energy meters. It also links to distributed I/O modules to collect analog/digital signals and can communicate with central master stations using standard utility protocols. Q3. Is it programmable or customizable?Yes — the D20ME runs user‑defined automation logic (often compliant with IEC 61131‑3 languages) for tasks like feeder automation, load transfer, and fault isolation. |
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