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The GE DS200TCPDG1BDC is a Power Distribution Board (Functional Acronym: TCPD) designed for the General Electric Speedtronic Mark V Turbine Control System.1
Its essential function is to manage and distribute electrical power to the critical components and various cores within the Mark V control panel, ensuring reliable operation of the gas or steam turbine.2
⚡ Key Functions and Specifications
This board acts as a central power management unit, typically located in the <PD> core of the Mark V system.3
Primary Functions
- Power Distribution: It distributes 4$125 \text{ VDC}$ power to essential components, including the Control Engine core, the TCPS (Power Supply) boards in each I/O core, and the TCEA (Emergency Overspeed) boards in the protective
<P1>core.5 - Core Isolation: It features several toggle switches (typically 8) that allow maintenance personnel to individually power down system cores for repair or diagnostics without shutting down the entire system.6
- Protection/Monitoring: It includes fuses and corresponding LED indicators to provide circuit protection and a visual status of power flow to different sections of the control system.7
- Auxiliary Power: It supplies 8$115/230 \text{ VAC}$ external power for specific components, such as the ignition transformers connected to the DTBC boards.9
Hardware Features
The design of the DS200TCPDG1BDC emphasizes protection and maintainability, featuring:10
- 36 Fuses: For circuit protection.11
- 36 Green “OK” LEDs: To indicate the operational status of each fuse.12 A lit LED means the fuse is functional.
- 8 Toggle Switches: For independent core power control.13
- 4 Signal Wire Terminals: For external device connections.14
The board is a revision of the base DS200TCPDG1 Power Distribution Card, reflecting continuous improvements to the Mark V system architecture.15
