ABB KSD211B101 3BHE022455R1101 high-performance input coupling unit

4. Product Overview

   The ABB model KSD211B101 / 3BHE022455R1101 (KS D211 B101 Input Coupling Unit, ICU) is an input coupling module designed within ABB’s excitation/control systems. Its purpose is to couple and isolate input signals and provide a stable interface to downstream modules. With compact structure and light weight, it integrates easily into cabinet environments and plays an important role in modular layouts of large excitation control systems.

   Key Specifications

   • Model: KSD211B101 / 3BHE022455R1101.

   • Description: KS D211 B101 Input Coupling Unit (ICU).

   • Origin: Switzerland (CH).

   • Dimensions: Depth approx. 120 mm; Width approx. 50 mm; Height approx. 165 mm.

   • Weight: approx. 0.5 kg.

   • Customs Tariff Code: 85437000 (reference).

   • Mounting: Cabinet or control rack installation (system‐dependent).

   • Applicable systems: ABB excitation/static excitation systems (e.g., UNITROL® series).

   • Other notes: Key performance indicators include coupling degree and insertion loss.

   Advantages & Features

   • High reliability design: Compact size and lightweight facilitate installation in constrained spaces and help reduce wiring and interference risks.

   • Superior signal coupling & isolation: Functions as a coupling unit, ensuring proper signal isolation between input and downstream modules, thus reducing noise or interference‐related misoperations. Insertion loss and coupling degree are well controlled to maintain signal integrity.

   • High modularity and system compatibility: Specifically designed for ABB excitation/control systems, enabling seamless integration into overall system architecture and facilitating maintenance and replacement.

   • Installation & maintenance convenience: Standardized dimensions and weight make it easy to locate and replace during installation; spare parts availability is favourable.

   • Industrial environment suitability: Although full environmental specs are not publicly detailed, given its application in excitation systems, it is built to withstand demanding industrial conditions of temperature and vibration, contributing significantly to system stability.

   Typical Applications

   • Power‐plant excitation systems: Serving as a support module in large generator excitation control systems, coupling various monitoring and control signals.

   • Utility automation/control systems: In control room cabinets, DCS/PLC/excitation module interfaces, used as input signal coupling modules.

   • Large industrial equipment control: For turbine units (hydro, steam, gas), within excitation/synchronization/control systems.

   • Power generation/distribution systems: In high‐reliability monitoring and control loops in utility and industrial settings, used as signal interfacing units.

   Precautions / Notes

   1. Before ordering, verify that the model and version match your system compatibility (e.g., KS D211 B vs KSD211B101 distinctions, firmware version, mainboard compatibility).

   2. During installation, ensure secure connection, clean socket/slot, no looseness or oxidation; avoid placing the coupling unit near strong electrical interference sources.

   3. Although full environmental rating is not publicly specified, it is advisable to install within industrial‐grade installation conditions (e.g., –20 °C to +60 °C or more, subject to system manual).

   4. When performing maintenance or replacement, strictly follow excitation system safety procedures and ensure power is isolated to avoid electric shock or mis‐operation.

   5. After module replacement, verify that the system self‐test passes and parameters are synchronized correctly within the system.

   6. As this unit serves as a coupling/interface module, failure may result in signal loss or system mis‐alarms; regular checks of module status and signal integrity are recommended.

4. The structure and details of the product：
5. 

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