Magnetic Field Deflection Bushing for MV Switchgear & GIS

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Features:

This magnetic field deflection bushing is a critical insulation component designed for medium‑voltage (MV) switchgear, gas‑insulated switchgear (GIS), ring main units (RMUs), and high‑voltage transformer equipment. Engineered to guide and stabilize magnetic fields while providing strong electrical insulation, it ensures stable operation, reduces interference, and enhances safety in power distribution systems.

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Description:

Core Functional Advantages

1. Precise Magnetic Field Deflection: Effectively guides and stabilizes magnetic fields around switchgear and transformer conductors, suppressing electromagnetic interference (EMI) and eddy current losses. This ensures the safe and stable operation of internal electrical components, reducing the risk of equipment failure caused by magnetic field distortion.
2. Superior Insulation Performance: Adopts high-grade epoxy resin or DMC (Dough Molding Compound) material, with excellent dielectric strength and insulation stability. It effectively isolates high voltage, prevents leakage and short circuits, and meets international insulation standards for medium and high-voltage equipment.
3. Durable & Environmentally Resistant: Designed to withstand extreme working conditions, including temperature fluctuations (-40℃ to +120℃), humidity, UV radiation, and chemical corrosion. It has strong aging resistance and a long service life (≥20 years), reducing maintenance costs and downtime.
4. Easy Installation & OEM Compatibility: Compact, standardized design with precise dimensions, enabling direct OEM replacement for mainstream switchgear brands (Schneider, ABB, Siemens). No on-site modifications are required, saving installation time and labor costs for new equipment manufacturing and retrofits.
5. Cost-Effective & Stable Supply: Factory-direct production with strict quality control, offering significant cost savings compared to original OEM parts without compromising performance. Supports bulk orders with short lead times, ensuring stable supply for large-scale switchgear production and maintenance projects.

Key Technical Parameters

Key Technical Parameters

Specifications
Rated Voltage
12kV, 24kV, 36kV (customizable for high-voltage applications)
Rated Current
630A, 1250A, 2500A (adjustable based on project requirements)
Dielectric Strength
≥120kV (1min AC withstand voltage)
Material
High-grade Epoxy Resin / DMC (UL94 V-0 flame-retardant)
Operating Temperature Range
-40℃ ~ +120℃
Insulation Resistance
≥1000MΩ (25℃, 50Hz)
Design Standard
IEC 62271-203, GB/T 11022
Installation Type
Flange Mount / Threaded Mount (customizable)
Service Life
≥20 years (under normal operating conditions)

Ideal Application Scenarios

1. Medium-Voltage Switchgear: Suitable for MV switchgear, ring main units (RMUs), and metal-enclosed switchgear, used to insulate and deflect magnetic fields in conductor connections, ensuring stable operation of circuit breakers, load switches, and other components.
2. SF6 Gas-Insulated Switchgear (GIS): Perfect for GIS equipment in substations, providing reliable insulation and magnetic field control in sealed gas compartments, adapting to harsh outdoor and indoor substation environments.
3. Power Transformers: Used in high-voltage transformer bushings, guiding magnetic fields around transformer windings, reducing eddy current losses, and protecting transformer insulation from damage.
4. Industrial & Utility Power Distribution: Applied in industrial power plants, commercial buildings, renewable energy projects (solar PV, wind power), and urban power grids, ensuring safe and efficient power transmission and distribution.
5. Switchgear Retrofits & Maintenance: Ideal for replacing old, worn-out bushings in existing switchgear and transformers, improving equipment reliability and extending service life without replacing the entire unit.

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