General Electric DS3800NGDD1C1B‌
General Electric DS3800NGDD1C1B‌
General Electric DS3800NGDD1C1B‌
General Electric DS3800NGDD1C1B‌
General Electric DS3800NGDD1C1B‌
General Electric DS3800NGDD1C1B‌
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DS3800NGDD1C1B‌

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The General Electric DS3800NGDD1C1B is a legacy Field Ground Detector Card engineered exclusively for GE‘s Mark IV Speedtronic gas and steam turbine control systems, designed to detect ground faults in field excitation circuits via hardwired signal paths.
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Technical specifications for DS3800NGDD1C1B‌

  • Manufacturer:
    General Electric
  • Part Number:
    DS3800NGDD1C1B‌
  • Product Family:
    GE Mark V/VI Driver Board
  • Product Type:
    Field Ground Detector Card
  • Stock:
    1
  • Input Interface:
    High-impedance connection to the excitation field circuit
  • Detection Method:
    Analog offset voltage bridge measurement.
  • Calibration:
    On-board potentiometers for sensitivity adjustment
  • Classification:
    Field-Replaceable Unit (FRU)
  • Operating Temperature:
    0°C to +60°C (+32°F to +140°F)
  • Storage Temperature:
    -40°C to +85°C (-40°F to +185°F)
  • Weight:
    0.24 kg
  • Estimated shipping dimensions:
    23×13.8×2 cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Safety & Compliance Communication Applications

Features:

  • Hardwired Ground Fault Detection
  • On-Board Potentiometer Calibration
  • Mark IV Exclusive Compatibility
The General Electric DS3800NGDD1C1B continuously monitors field excitation circuits using dedicated hardwired signal paths. This 1980s-era logic design ensures reliable fault detection without dependency on network communication protocols, providing a deterministic response to ground fault conditions in GE Mark IV turbine systems.

The General Electric DS3800NGDD1C1B features field-adjustable potentiometers that allow technicians to calibrate ground fault sensitivity levels precisely. This onboard adjustment capability enables customization to specific site wiring conditions without removing the card from the system rack, simplifying maintenance procedures.

Engineered specifically for GE‘s Mark IV Speedtronic systems, the General Electric DS3800NGDD1C1B is not guaranteed to function in Mark V, Mark VI, or other control platforms. As a Field-Replaceable Unit (FRU), it integrates directly with the Mark IV backplane via edge connectors, ensuring proper signal routing and power distribution within original GE turbine control architectures.

The DS3800NGDD1C1B‌ General Electric Field Ground Detector Card may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
General Electric DS3800NGDD1C1B‌ Field Ground Detector Card Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
General Electric DS3800NGDD1C1B‌ Field Ground Detector Card

General

  • Manufacturer General Electric
  • Model DS3800NGDD1C1B‌
  • Condition New Original ready stock
  • Product Family DS3800NHVM1E1D,DS200CPCAG1ABB,DS200DTBCG1AAA
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Hardwired Fault Isolation – The card detects and alerts operators to field circuit ground faults via dedicated signal lines, enabling rapid isolation of faulty circuits without dependency on network availability.
  • Multi-Tier Alert System – Visual indicators (LEDs), audible alarms, and hardwired notifications ensure operators are immediately aware of ground fault conditions, enabling rapid response to potential electrical hazards.
  • Mark IV System Compliance – Manufactured as an OEM component to meet GE‘s original specifications for Speedtronic turbine control systems of the 1980s era.
  • Field-Replaceable Unit (FRU) Design – Classified as an FRU, allowing for safe and efficient replacement during maintenance with minimal system downtime.
  • Mark IV Backplane Interface – Connects directly to the GE Mark IV system rack using standardized edge connectors, ensuring proper signal routing and power distribution.
  • Hardwired Fault Notification Bus – Transmits ground fault detection signals via dedicated hardwired lines to Mark IV control processors (I/O Core, Main Processor boards), not through network protocols.
  • Indicator and Alarm Outputs – Provides direct outputs for visual (LED) and audible alarm devices, enabling immediate local notification of ground fault conditions.
  • Field-Replaceable Unit Interface – Designed as a plug-and-play FRU with standardized connections that allow for quick removal and replacement, maintaining connectivity integrity across multiple replacement cycles.
  • Gas Turbine Control Systems – Primary deployment in GE Mark IV Speedtronic gas turbines for continuous ground fault monitoring of field excitation circuits, protecting against leakage currents and unintended grounding.
  • Steam Turbine Installations – Critical component for ensuring electrical safety in steam-driven power generation systems, monitoring excitation and power distribution circuits for ground fault conditions.
  • Power Generation Facilities – Deployed in utility-scale power plants where turbine reliability is essential, providing ground fault detection that prevents unexpected shutdowns and protects generation assets.
  • Mark IV System Maintenance & Refurbishment – Used as a replacement unit in existing Mark IV installations, classified as a Field-Replaceable Unit (FRU) that minimizes downtime during scheduled maintenance or emergency repairs.
Description
The General Electric DS3800NGDD1C1B serves as a dedicated Field Ground Detector Card within GE‘s Mark IV Speedtronic turbine control architecture. Its primary function is to continuously monitor the excitation and power distribution systems of gas and steam turbines, detecting any leakage currents or unintended grounding that could lead to severe electrical disturbances. Engineered specifically for seamless integration into GE Mark IV systems, the card uses standardized edge connectors to interface directly with the system backplane, requiring no modifications for installation.

When the General Electric DS3800NGDD1C1B detects a ground fault condition, it triggers multiple alert mechanisms to ensure operators are immediately notified. These include visual indicators on the card itself, audible alarms, and system-level notifications transmitted via dedicated hardwired signal lines to the Mark IV control processors (such as the I/O Core and Main Processor boards). This multi-layered alerting approach, based on 1980s hardwired logic, enables rapid response to electrical anomalies without relying on network communication protocols.

Designed for long-term reliability in harsh industrial environments, the General Electric DS3800NGDD1C1B is built to withstand demanding operating conditions typical of power generation facilities. The card features on-board potentiometers (variable resistors) that allow technicians to perform precise calibration of ground fault sensitivity levels without removing the card from the rack. This field-adjustable design is essential for matching detection thresholds to specific site wiring conditions.

Classified as a Field-Replaceable Unit (FRU), the General Electric DS3800NGDD1C1B allows for quick replacement during maintenance with minimal system downtime. Periodic inspection and testing are recommended to maintain optimal performance and ensure the module is functioning correctly. Regular monitoring of fault indicators, such as warning LEDs or system alerts, allows operators to identify persistent issues promptly and arrange for replacement when necessary, thereby maintaining overall system integrity.

Alternative Names
DS200CPCAG1ABB DS3800NGDC1A1A‌ DS200TBQBG1ACB DS3800NHVM1E1D DS200TBQCG1ABB
Technical notes
The General Electric DS3800NGDD1C1B functions specifically as a field ground detector card and should not be confused with general-purpose I/O modules or PLCs.The card transmits fault notifications via hardwired signal lines to Mark IV control processors, not through network-based protocols.On-board potentiometers allow field calibration of ground fault sensitivity without removing the card from the rack.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the primary application of the General Electric DS3800NGDD1C1B?
The General Electric DS3800NGDD1C1B is used as a field ground detector card in GE Mark IV Speedtronic gas and steam turbine control systems. Its primary role is to monitor field excitation circuits for ground faults via hardwired signal lines, alerting operators before electrical disturbances can cause equipment damage or system failures.
How does The General Electric DS3800NGDD1C1B integrate into existing Mark IV systems?
The General Electric DS3800NGDD1C1B uses a standardized PCB design with edge connectors that dock directly into GE Mark IV system racks. No additional modifications or adapters are required for installation. It is classified as a Field-Replaceable Unit (FRU), allowing quick replacement during routine maintenance without complex reconfiguration.
How does The General Electric DS3800NGDD1C1B alert operators when a fault is detected?
When the General Electric DS3800NGDD1C1B detects a ground fault, it triggers multiple alert mechanisms: visual indicators (LEDs) on the card, audible alarms, and system-level notifications transmitted via dedicated hardwired signal lines to the Mark IV control processors. This hardwired approach does not rely on network communication protocols.
Can the DS3800NGDD1C1B be used in other GE turbine control systems, such as Mark V or Mark VI?
The General Electric DS3800NGDD1C1B is specifically engineered for the Mark IV Speedtronic system. Compatibility with other platforms (Mark V, Mark VI, etc.) is not guaranteed and would require full verification of backplane pinouts, voltage requirements, and grounding detection logic. For replacement in Mark IV systems, this card is a direct fit; for other systems, consult GE original documentation.
What regular maintenance does the DS3800NGDD1C1B require?
To ensure reliable operation, the General Electric DS3800NGDD1C1B should undergo periodic inspection and testing, including verification of on-board potentiometer calibration. If the module shows signs of persistent failure or damage, prompt replacement as an FRU is recommended. Routine maintenance procedures are detailed in the Mark IV system documentation.