GE DS200FCGDH1B LCI CNTRL & GATING CONF/COAT

GE DS200FCGDH1B LCI CNTRL & GATING CONF/COAT

  • Fiber Optic Connections: The board uses fiber-optic connections to communicate with the bridge. This provides electrical isolation and immunity to the high levels of electromagnetic interference (EMI) found in a power generation environment.
  • Obsolete Status: As a component of the discontinued Mark V series, the DS200FCGDH1B is an obsolete part. It is no longer manufactured by GE and is typically sourced from new old stock, surplus vendors, or specialized repair and refurbishment companies.
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الوصف

The GE DS200FCGDH1B is a specialized circuit board known as a Gate Distribution and Status Card (FCGD) for the legacy GE Speedtronic Mark V series of turbine control systems. It is a critical component for controlling large synchronous motors used to start turbines.

 

Key Features and Function

 

  • LCI Control and Gating: The board’s primary function is to serve as a critical interface for an LCI (Load Commutated Inverter). This type of variable-frequency drive is used for starting and controlling large synchronous motors, such as those that drive turbines. The board handles the gating or “firing” signals for a 6-pulse, phase-controlled bridge.
  • Signal Processing: The board receives firing information from a separate Digital Signal Processing Card (DSPC) over the system’s VME backplane. It then decodes and distributes these signals to control the firing of the Silicon Controlled Rectifiers (SCRs) in the bridge.
  • Feedback and Diagnostics: The FCGD board also receives feedback from the bridge components, including multiplexed cell status signals and other bridge feedback like voltage, frequency, and current status. This information is then scaled and sent back to the DSPC for monitoring and diagnostics.
  • Conformal Coating: The “CONF/COAT” in the description signifies that the board is conformal coated. This is a protective polymer film applied to the PCB to safeguard it from environmental factors like moisture, dust, chemical vapors, and corrosion. This coating enhances the board’s durability and reliability in harsh industrial environments.
  • Fiber Optic Connections: The board uses fiber-optic connections to communicate with the bridge. This provides electrical isolation and immunity to the high levels of electromagnetic interference (EMI) found in a power generation environment.
  • Obsolete Status: As a component of the discontinued Mark V series, the DS200FCGDH1B is an obsolete part. It is no longer manufactured by GE and is typically sourced from new old stock, surplus vendors, or specialized repair and refurbishment companies.

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