The ABB KS D211 B101 (3BHE022455R1101) is an Input Coupling Unit (ICU) from ABB. This module is a specialized component used in industrial control systems, particularly in excitation control systems for large synchronous machines.

Product Description

The ABB KS D211 B101 acts as an Input Coupling Unit. In the context of industrial automation, an input coupling unit is typically responsible for:

• Signal Isolation: Providing electrical isolation between different parts of a system or between field devices and the control system. This protects sensitive electronics from noise, voltage spikes, and ground loops that can occur in industrial environments.
• Signal Conditioning: Adapting various input signals (e.g., from sensors) to a format suitable for processing by the main control unit. This might involve filtering, amplification, or conversion.
• Impedance Matching: Ensuring that the signal source and the receiving circuit are properly matched to prevent signal degradation.

Given its specific use in excitation control systems, the KS D211 B101 likely plays a role in safely and reliably coupling critical input signals related to generator or motor parameters (such as voltage, current, or protection signals) into the excitation controller. This ensures that the control system receives accurate and clean data for precise regulation of the synchronous machine's field.

It's described as a component of UNITROL® Excitation Systems, specifically within the UNITROL 6000 Medium series, highlighting its application in high-power environments.

Product Specifications

• Manufacturer: ABB
• Model Name: KS D211 B101
• ABB Part Number: 3BHE022455R1101
• Product Type: Input Coupling Unit (ICU)
• Country of Origin: Switzerland (CH)
• Application: Primarily used in excitation control systems (e.g., UNITROL® Excitation Systems, UNITROL 6000 Medium).
• Functionality: Facilitates seamless and reliable data exchange by providing coupling and isolation for input signals.
• Physical Dimensions (Approximate):
• Product Net Depth / Length: 120 mm
• Product Net Height: 165 mm
• Product Net Width: 50 mm
• Product Net Weight: 0.5 kg (approximately 1.1 lbs)
• Mounting: Designed for integration into control cabinets.
• Status: While new units may still be available from distributors, it's often listed as "Discontinued by Manufacturer" from a direct factory perspective, indicating it might be a legacy part.

Product Application Cases

The ABB KS D211 B101 Input Coupling Unit ICU is essential in critical industrial applications that rely on precise and robust control of synchronous machines, primarily in the power sector.

• Power Generation Plants: This is a core application. The ICU is used within the excitation systems of large synchronous generators (e.g., in thermal, hydro, nuclear, or gas-fired power plants). It ensures that the control system receives accurate and isolated feedback from the generator (e.g., terminal voltage, current, power factor) to precisely regulate the excitation current and maintain grid stability.
• Industrial Synchronous Motors: In heavy industries such as mining, metals, and cement, large synchronous motors drive critical equipment (like mills, large pumps, and compressors). The ICU supports the excitation control system in accurately reading motor parameters, enabling efficient operation and protection.
• Reactive Power Compensation (STATCOMs, Synchronous Condensers): In large utility applications, equipment like Static Synchronous Compensators (STATCOMs) or synchronous condensers are used to provide dynamic reactive power support and enhance grid stability. The KS D211 B101 would play a role in ensuring reliable signal acquisition for their excitation control.

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一：Regarding the quality of the product and after-sales service

Status: 100% original

Warranty period: 12 months.

Payment method: T/T. Currencies for receipt: US dollar, New Zealand dollar, Chinese yuan, euro, Hong Kong dollar, Australian dollar, British pound, Canadian dollar, ruble and other global currencies

Market price: RMB15000-RMB30000 (For reference only)

二：How to purchase

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Click to download the relevant instruction manual

3BHE022455R1101.pdf