GE DS200TCTLG1A Steam Turbine Reheat Board(XIONGBA)

 GE DS200TCTLG1A Steam Turbine Reheat Board(XIONGBA)

The GE DS200TCTLG1A is a Steam Turbine Reheat Board designed for GE’s Mark V Speedtronic turbine control system, serving as a critical component in industrial automation and power generation applications. This module is part of the legacy DS200 series, specifically engineered for steam turbine protection and trip control, ensuring safe and reliable operation in mission-critical environments 14.

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Description

The GE DS200TCTLG1A is a Steam Turbine Reheat Board designed for GE’s Mark V Speedtronic turbine control system, serving as a critical component in industrial automation and power generation applications. This module is part of the legacy DS200 series, specifically engineered for steam turbine protection and trip control, ensuring safe and reliable operation in mission-critical environments 14.

Product Overview

The DS200TCTLG1A acts as the master trip circuit and protection core within the Mark V system, responsible for executing emergency shutdowns and overspeed protection. It features two primary trip relays (PTR1 & PTR2) and three sets of emergency trip relays (ETR1 & ETR2), which monitor turbine speed and trigger shutdowns if predefined thresholds are exceeded. The module also includes four auxiliary control outputs for solenoid valves (e.g., oil test, mechanical lockout), enabling comprehensive testing and diagnostic capabilities 14.

 

Key functions include:

 

  • Overspeed Trip Testing: Supports electrical and mechanical overspeed tests (both online and offline) to validate turbine safety mechanisms.
  • TMR Cross Trip Testing: Ensures redundancy by verifying the integrity of the triple modular redundancy (TMR) architecture.
  • Emergency Shutdown: Activates protective measures during critical failures, such as excessive vibration or temperature deviations 14.

Technical Specifications

Parameter Name Parameter Value
Product Model DS200TCTLG1A
Manufacturer GE (General Electric)
Product Type Steam Turbine Reheat Board
Series Mark V Speedtronic
Input Voltage 24V DC ±10%
Redundancy Triple Modular Redundancy (TMR)
Operating Temperature -20°C to +60°C
Storage Temperature -40°C to +85°C
Physical Dimensions 3U form factor (100 mm x 160 mm)
Weight ~1.54 kg
Terminals 154 (77 per block via TB1/TB2)
Connectors 3 x 34-pin, 2 x 16-pin
Protection Class IP20

Main Features and Advantages

High-Reliability Protection:
The TMR architecture ensures continuous operation even if one channel fails, critical for power plants and offshore platforms. The module’s PCB coating protects against dust, moisture, and electromagnetic interference (EMC) 14.

Comprehensive Testing Capabilities:
Supports 10+ test scenarios (e.g., electrical overspeed trip test, mechanical trip piston test) to maintain compliance with safety standards. Diagnostic LEDs and jumper configurations simplify troubleshooting 14.

Legacy Compatibility:
Designed for Mark V systems, it interfaces seamlessly with other DS200 modules like the DS200TBQBG1ACB analog terminal board and DS200TCEAG1BSF emergency overspeed board 48.

Industrial-Grade Durability:
Operates reliably in extreme conditions (-20°C to +60°C) with IP20 protection, making it suitable for high-vibration environments in power generation and heavy industry 14.

Application Areas

  • Power Generation:
    Critical for steam turbine control systems, ensuring safe startup, load regulation, and emergency shutdowns in coal-fired and combined-cycle power plants.
  • Oil & Gas:
    Used in offshore platforms to monitor turbine speed and protect against catastrophic failures in compressor and pump systems.
  • Heavy Industry:
    Supports steel mills and cement plants by integrating with PLCs and robotic systems for real-time process control 1415.

Related Products

  • DS200TBQBG1ACB: Analog terminal board providing 154 signal connections for field devices.
  • DS200TCEAG1BSF: Emergency overspeed board for turbine speed monitoring and shutdown activation.
  • DS200TCCAG2A: Analog I/O module for signal processing and control 48.

Installation and Maintenance

Installation:

 

  • Mount in a grounded VME rack with proper ventilation.
  • Connect TB1/TB2 terminal blocks to field devices and 34-pin connectors to compatible Mark V modules.
  • Follow GE’s GEH-6195Dmanual for wiring and configuration 14.

 

Maintenance:

 

  • Inspect for loose connections and corrosion quarterly.
  • Replace backup batteries (if applicable) every 5 years.
  • Perform firmware updates via GE’s Control Builder software to ensure compatibility with system upgrades 14.

Availability and Warranty

  • Status: Legacy product (no longer in active production by GE).
  • Supply: Available through authorized distributors (e.g., AX Control, Maxodeals) with lead times varying by stock.
  • Warranty: Typically 1–3 yearsfrom third-party suppliers, covering defects in materials and workmanship 19.

Key Considerations

  • Replacement Strategy: Due to its legacy status, consider transitioning to GE’s Mark VIeseries for modern features (e.g., Ethernet/IP connectivity).
  • Documentation: The GEH-6195Dmanual is critical for configuration but may require direct request from GE or third-party sources 14.

 

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