Description
ALSTOM ICP232 029.359325
This is a current protection relay module manufactured by Alstom (now partly owned by GE), specifically model ICP232. The code “029.359325” is its part number/order number. This module is mainly used for differential protection of medium and high voltage motors and generators.

Detailed Product Description
1. Product Series: ICP232
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Series Name: ICP stands for Integrated Control and Protection.
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Product Line: This is a specific model from Alstom’s (later Alstom Grid, a business sold to General Electric in 2015, becoming part of GE Grid Solutions) Micom Px4x series of protection relays.
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Primary Function: The ICP232 is a specialized Differential Protection Relay.
2. Primary Function and Application
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Core Protection Function: Generator and Motor Differential Protection.
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Principle: It compares the current values at both ends (incoming and outgoing) of a piece of equipment (e.g., a large motor or generator). Under normal operation or external faults, the currents at both ends are equal; when an internal fault occurs within the equipment, this balance is disturbed. The relay quickly detects this difference and issues a trip command to isolate the faulty equipment from the power grid.
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Purpose: To provide fast, sensitive, and selective protection for expensive electrical equipment (e.g., large high-voltage motors, generators), preventing damage caused by severe internal faults such as short circuits.
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Typical Applications:
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Large high-voltage synchronous/asynchronous motors
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Medium and small-sized generators
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Auxiliary transformers in power plants/substations
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3. Key Features
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High Reliability: Designed for critical electrical assets to ensure reliable operation during a fault.
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High Accuracy: Employs advanced algorithms to accurately distinguish between internal faults and normal transient conditions (such as inrush currents).
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Flexibility: Typically features configurable setting groups, allowing users to adjust protection settings based on different operating conditions.
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Communication Capabilities: Supports standard industrial communication protocols (e.g., Modbus, IEC 61850) for easy integration into station automation systems for remote monitoring and control.
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Integrated Design: As part of the ICP series, it integrates protection, control, measurement, and communication functions into a compact unit.
Sales of the brand:
ABB、EPRO、GE、FOXBORO、Schneider、Rexroth、Honeywell、Bently、YASKAWA other global DCS system and PLC system, servo system of famous industrial brand.
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