GE Grid Solutions
D20/D200 Technical Overview
GE Information
PRPI-019-3.00-10
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2. Detailed Technical Description
This section describes the D20/D200 hardware and software design & operation in more detail.
2.1 Mechanical Design and Packaging
2.1.1 General
The design of the D20/D200 packaging was driven by the following electric utility requirements:
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Environmental standards required by the power utility and resource industries
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Compliance with worldwide industry standards
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Maintainability – Minimize the requirement for, and simplify, routine maintenance
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Reliability – Maximize the Mean Time Between Failure and minimize Mean Time To
Restore
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Packaging efficiency
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Safety
To achieve these requirements, D20/D200 packaging is based on:
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Compact modules designed for industry-standard 19" (483 mm) rack mounting.
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VME/Eurocard architecture
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Front access provided on peripheral I/O modules for easy access to field terminations,
displays and auxiliary hardware
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Electronics and logic circuits are easily removed from fixed I/O termination panels, without
powering down the equipment or disconnecting field termination
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High-quality metal panels for all chassis, mountings, panels and terminations
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Corrosion-resistant finishes and anodized parts, for resistance to rust, oxidization and
scratching
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Gold-plated connectors and sockets where necessary, tin or nickel-palladium plated
connectors and sockets otherwise
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Connectors, integrated circuit sockets and terminations providing secure positive connections
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Separate termination boards for customer connections and serial I/O access
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Standard screw compression-type terminal blocks, capable of terminating a single #12 AWG
[2.05mm] wire supplied for field I/O terminations. Optional DB25 connectors, removable
terminals or customer-specified terminal blocks provide flexible termination schemes.
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Industry-standard FR-4 epoxy glass printed circuit boards, coated with solder mask
