ABB GIR5252100R3261 07KT94B Three-phase AC contactor

ABB GIR5252100R3261 07KT94B Overview

Based on the search results, the ABB GIR5252100R3261 07KT94B is a component or module of a Gas-Insulated Switchgear (GIS). Specifically, it appears to be related to a Circuit Breaker. The designation "07KT94B" might be a specific configuration code or serial number.

As a critical component of a gas-insulated switchgear, its detailed information is typically very technical and may require reference to ABB's professional documentation. The following description is based on a general understanding of GIS circuit breakers and some clues from the search results.

Product Detailed Description

• Function:

• As a key component in gas-insulated switchgear, the primary function of the GIR5252100R3261 07KT94B circuit breaker is to safely interrupt and connect high-voltage circuits in power systems.

• It can perform switching operations under normal operating conditions and quickly interrupt current during faults (such as short circuits) to protect equipment and the system.

• Gas insulation (typically SF6) is used as both the insulating and arc-quenching medium, offering excellent electrical performance.

• Features:

• Gas Insulation (SF6): Utilizes sulfur hexafluoride (SF6) gas as the insulating and arc-quenching medium, providing high dielectric strength and reliable arc-quenching capability.

• Modular Design: As part of a GIS, it typically features a modular design for easy installation, expansion, and maintenance.

• High Reliability: Specifically designed for high-voltage applications with high reliability and a long service life.

• Compact Structure: Gas insulation technology allows for a compact equipment structure, reducing space requirements.

• Integration: Often integrated with other GIS components (such as disconnectors, earthing switches, current transformers, voltage transformers, etc.) within a single enclosure.

Product Parameters

Since the specific model's parameters are very detailed and critical, the following provides a general range of GIS circuit breaker parameters. Always refer to the official technical documentation for the ABB GIR5252100R3261 07KT94B:

• Rated Voltage: May range from tens of kilovolts to hundreds of kilovolts (e.g., 110 kV, 220 kV).

• Rated Current: May range from hundreds of amperes to thousands of amperes (e.g., 1200 A, 2500 A).

• Rated Short-Circuit Breaking Current: May range from tens of kiloamperes to hundreds of kiloamperes (e.g., 40 kA, 63 kA).

• Rated Short-Circuit Withstand Current: Typically related to the rated short-circuit breaking current.

• Rated Peak Withstand Current: Typically several times the rated short-circuit breaking current.

• Operating Mechanism: May employ spring mechanisms, hydraulic mechanisms, etc.

• Insulating Gas: SF6 (Sulfur Hexafluoride).

• Protection Degree: GIS equipment typically has a high protection degree (e.g., IP65).

• Ambient Temperature: Operating temperature range is usually around -25 °C to +40 °C.

• Mechanical Endurance: May range from thousands to tens of thousands of operations.

• Electrical Endurance: Depends on the magnitude of the interrupted current.

Product Advantages

• High Reliability: Gas insulation provides stable electrical performance, reducing the risk of failures.

• High Safety: Fully enclosed structure reduces the risk of electric shock.

• Low Maintenance: The gas-insulated environment reduces component corrosion and contamination, lowering maintenance requirements.

• Small Footprint: Compact design saves substation space.

• Environmentally Friendly (Modern Design Trends): Although SF6 is a potent greenhouse gas, modern GIS equipment emphasizes gas sealing and leakage control, and actively develops alternative gas solutions.

• Excellent Arc-Quenching Performance: SF6 gas has a fast and effective arc-quenching capability, reliably interrupting fault currents.

Precautions

• Strictly follow ABB's technical specifications for installation, operation, and maintenance.

• Operation and maintenance should be performed by qualified electrical engineers.

• Regularly check the pressure and leakage of SF6 gas to ensure it is within the safe range.

• The operating mechanism requires regular inspection and lubrication.

• Before performing any maintenance work, always completely disconnect the power supply and ground the equipment.

• Pay attention to environmental protection and handle SF6 gas according to regulations.

Product Applications

As a key component of gas-insulated switchgear, the ABB GIR5252100R3261 07KT94B circuit breaker is mainly used in high-voltage and extra-high-voltage power systems, such as:

• Substations: For controlling and protecting transformers, busbars, lines, etc.

• Power Plants: For connecting and protecting generator units.

• Transmission Lines: For switching and protecting lines.

• Industrial Sector: For power distribution and protection for large industrial users.

• Urban Power Grids: Particularly suitable for space-constrained urban environments.

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