Description
Product Overview
The GE DS200TCPDG1B (TCPD board, common suffix variants DS200TCPDG1BCC, DS200TCPDG1BEC) is the rack power distribution printed circuit board for GE Speedtronic Mark V TMR turbine control system. Installed inside the PD power core assembly, this board distributes 125VDC input power to each I/O engine core, TCPS control boards and P-core TCEA overspeed protection boards. It incorporates individual fusing for every power branch circuit, status LED indicators and DIP toggle switches that allow independent power isolation for each control core for maintenance purposes. Built-in metal oxide varistors (MOV) provide transient voltage surge suppression to protect downstream sensitive control electronics. This legacy board is end-of-manufacture and widely stocked as critical spare for gas turbine, steam turbine and combined-cycle power plant Mark V control cabinets.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | DS200TCPDG1B (suffix variants: BCC, BEC) |
| Manufacturer | GE General Electric |
| Product Category | TCPD Power Distribution Board |
| Control Platform | Speedtronic Mark V Turbine Control System |
| Input Supply | 125 VDC main rack input power |
| Circuit Protection | 36 individual branch fuses for core power circuits |
| Control Switches | 8 DIP toggle switches for per-core power isolation |
| Status Indicators | 36 OK LEDs for fuse health; 2 fault alarm LEDs |
| Surge Protection | Onboard MOV transient suppression components |
| Connectors | 10-pin header, multi-way power ribbon and terminal connectors |
| Mounting | Plug-in PCB inside Mark V PD power core rack |
| Diagnostics | Fuse blown indication via LED status monitoring |
| Operating Temperature | -20°C ~ +60°C |
| Storage Temperature | -40°C ~ +85°C |
| Relative Humidity | 5% ~95% non-condensing |
| Approximate Weight | 0.98 kg |
Compliance & Certifications
- CE mark compliant with EMC and Low Voltage Directive
- Designed to GE Speedtronic turbine control specifications
- RoHS compliant
- Factory power-on, fuse continuity and power distribution functional test before shipment
Storage & Installation Guidelines
Storage Requirements
- Store in dry temperature-controlled warehouse; recommended ambient 10°C ~30°C, RH <70% non-condensing
- Remain sealed inside original anti-static packaging before installation
- Protect from mechanical shock, continuous vibration, dust and corrosive vapors
- ESD wristband required when unpacking and handling PCB assemblies
Installation Instructions
- Execute lock-out/tag-out and fully de-energize Mark V control rack, confirm 125VDC source is isolated
- Wear ESD protective gear to prevent electrostatic damage to circuit components
- Open the PD power core rack and discharge residual high voltage capacitance
- Label and disconnect all multi-pin power connectors, ribbon cables and terminals from old DS200TCPDG1B
- Insert replacement board and secure mounting hardware
- Set DIP toggle switches to match original site configuration for core power enable / isolation
- Reconnect all power wiring and connectors strictly following original wiring schedule
- Restore rack power, verify all fuse OK LEDs, check individual core power outputs; commissioning must be completed by certified GE turbine control technicians
FAQ
Q: What system uses DS200TCPDG1B? A: It belongs to GE Speedtronic Mark V gas and steam turbine TMR control system, functioning as TCPD power distribution board in PD core.
Q: What is the core function of DS200TCPDG1B? A: It takes 125VDC rack supply, distributes fused power to all Mark V control cores and protection boards, and enables core power isolation via toggle switches.
Q: What do the onboard LEDs indicate? A: 36 green OK LEDs confirm each branch fuse integrity; red fault LEDs alert blown fuses or power circuit anomalies.
Q: Is suffix revision matching required? A: Yes, suffix variants differ in PCB coating, component revision and surge protection rating. Revision matching is mandatory for TMR redundant racks.
Q: What warranty is available? A: Standard 12-month warranty applies for fully tested boards operated under rated normal operating service conditions.
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