• GE FANUC DS3800NGDC1A1A
  • GE FANUC DS3800NGDC1A1A
  • GE FANUC DS3800NGDC1A1A
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GE Fanuc DS3800NGDC1A1A Mark IV Speedtronic Ground Detector Module

GE Fanuc DS3800NGDC1A1A Mark IV Speedtronic Ground Detector Module

Description

The GE DS3800NGDC1A1A is a specialized Ground Detector Module designed for the Mark IV Speedtronic turbine control system. This module provides critical real-time monitoring of electrical leakage relative to the...

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SKU: DS3800NGDC1A1A
Vendor: GE FANUC
Category: Ground Detector Module
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Description

The GE DS3800NGDC1A1A is a specialized Ground Detector Module designed for the Mark IV Speedtronic turbine control system. This module provides critical real-time monitoring of electrical leakage relative to the system frame potential. By identifying and isolating ground faults, the board ensures the integrity of the turbine control matrix during startup, steady-state operation, and emergency shutdown sequences. It is widely utilized in heavy industrial environments, including steam and gas turbine power generation, petrochemical facilities, and large-scale processing plants.

Features

  • Integrated fault path telemetry for high-voltage excitation array protection.
  • Features a robust Motorola NPN power transistor with an aluminum heat sink for thermal management.
  • Includes six dedicated test points (TP0-TP5) for precise system diagnostics and calibration.
  • Equipped with high-stability cement wire-wound resistors and 600V-rated Seacor polyester film capacitors.
  • Designed for secure mounting via snap-in PCB screw mounts and nylon guide pins.

Technical Specifications

Model DS3800NGDC1A1A
Series Mark IV Speedtronic
Brand GE Fanuc
Operating Temperature 0 to 60 deg C
Transistor Type Motorola NPN with heat sink
Capacitor Ratings 600 VDC (film), 25 VDC (electrolytic)
Test Points 6 (TP0-TP5)
Interface 1x 3-pin male header, 1x 2-position terminal block, 1x 5-position terminal strip

Installation Guidelines

  • Ensure the control system is fully powered down before inserting or removing the module from the rack.
  • Handle the PCB by the edges to prevent electrostatic discharge (ESD) damage to the integrated circuits.
  • Verify that the nylon guide pins are properly aligned with the chassis mounting points before securing the board.
  • Ensure all field wiring to the terminal strips and headers is properly strain-relieved to prevent vibration-induced disconnects.
  • Confirm that TP0 is correctly referenced to the system frame ground during commissioning.

FAQ

What is the primary function of the DS3800NGDC1A1A?

This module acts as a ground detector within the Mark IV Speedtronic system, monitoring for electrical leakage to the frame to prevent damage to the turbine control and excitation components.

Are the test points on this board accessible during operation?

Yes, the six test points (TP0-TP5) are provided for on-board diagnostics; however, caution should be exercised when probing live circuits to avoid shorting adjacent components.

What type of resistors are used on this board?

The module utilizes cement wire-wound resistors, which are selected for their high-temperature stability and reliability in demanding industrial environments.