Digital guide

You are here:
  1. Home
  2. GE
  3. GE DS3800NCIB1G1C

GE DS3800NCIB1G1C

Product Name:​ Mark IV Current Isolator Board / High-Speed Digital Input Module
Product Introduction:​ The GE DS3800NCIB1G1C is a Current Isolator Board designed for GE’s Mark IV Speedtronic turbine control system. It provides current isolation and protection, ensuring stable and reliable operation of turbine control systems by isolating electrical signals, supporting accurate current measurement, and preventing interference. (Alternate configuration: high-speed digital input with buffer, extended temperature, noise immunity variant for Mark V.)
WhatApp
WeChat

Detailed content

Technical Specifications:
  • Manufacturer: General Electric (GE)
  • Series: Mark IV Speedtronic (base model NCIB for Mark V high-speed digital input)
  • Suffix Code: 1G1C (custom noise filtering, heavy-duty termination coating)
  • Digital Inputs: 16, differential or single-ended
  • Input Frequency: 0 to 10 kHz (field-configurable)
  • Input Logic Level: 24 V DC (sinking/sourcing)
  • Input Impedance: Custom “G” configuration (lower for noise immunity)
  • Buffer Amplifiers: Built-in per channel (drives long cables)
  • Buffer Input Current: 5 mA max per channel
  • Cable Length: Up to 300 meters (typical)
  • Counter Resolution: 32-bit (up to 2³² counts)
  • Noise Rejection: Custom “G” configuration filtering
  • Isolation: 2500 V AC optical/channel-to-backplane
  • Power Draw: +5 V DC @ 2.0 A; +15 V DC @ 0.5 A
  • Operating Temperature: -40 °C to +85 °C (ambient)
  • Storage Temperature: -55 °C to +100 °C
  • Dimensions: 6U VME (233.35 × 160 mm)
  • Coating: “C” heavy-duty termination coating (40–60 microns)
Structural / Component Features:​ Central to its design are two transformers — one blue transformer (P/N 218A4834-P1) and one black transformer (P/N 4202-1) — responsible for stepping up or stepping down voltages as required, providing the necessary current isolation. Four blue jack boxes with male connector ports enable easy connectivity with other components. Three potentiometers with dials allow operators to fine-tune resistance settings. Two integrated circuits process electrical signals and ensure proper isolation. Various capacitors (round silver, cube-shaped, small round in different colors) store and release electrical energy, smoothing voltage levels. Multiple color-banded resistors denote specific resistance values.
Working Principle:​ The transformers provide current isolation protecting sensitive circuit elements from voltage fluctuations. The potentiometers allow fine-tuning of resistance for optimal current flow and precise control. Integrated circuits process electrical signals ensuring proper isolation. The board isolates currents and prevents interference between different parts of the control system, enhancing overall system safety and reliability.
Application Scenarios:​ Critical component in Mark IV Speedtronic turbine control series; manages electrical signals, isolates currents, and prevents interference in turbine control systems. The modular design with jack boxes facilitates straightforward expansion or integration with other system parts.
Usage Notes:​ For the “1G1C” suffix configuration, the custom “G” parameters (noise filtering characteristics, input impedance, threshold levels) should be verified against GE’s production database documentation. Handle with ESD precautions. The heavy-duty “C” coating provides enhanced protection in harsh industrial environments.

You may also like