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.
This magnetic field deflection bushing, also named field grading stress control insulator, is a core internal component specially developed for medium voltage GIS, ring main unit and power transformer equipment.
It homogenizes uneven electric field distribution around penetrating conductors inside sealed SF6 gas cabinets, effectively suppresses eddy current heating and electromagnetic interference, lowering equipment operation temperature and extending GIS cabinet service life.
This product belongs to our complete line of distribution switchgear accessories for power distribution cabinet maintenance and new project assembly.
Glass fiber reinforced DMC molded structure, high mechanical impact resistance, excellent anti-tracking and anti-pollution performance, suitable for industrial heavy-pollution substation environments.
Integral epoxy pouring forming, stable dielectric strength, compact size, perfect for narrow-space GIS internal wiring layout.
1. Field Homogenization Function: Ordinary insulation bushings only provide basic isolation; this deflection structure actively guides magnetic field distribution to avoid local electric field breakdown.
2. Eddy Current Suppression Design: Greatly reduces eddy current loss caused by alternating magnetic field, solving the common overheating fault of GIS through-wall parts.
3. IEC 62271 Standard Certified: Strictly passed medium voltage insulation withstand voltage test, fully compliant with international switchgear industry specifications.
| Parameter Item | Standard Specification | Project Application Remark |
|---|---|---|
| Applicable Voltage Class | 12kV / 24kV / 36kV MV | Custom voltage grades available on OEM request |
| Optional Material | DMC Bulk Molding Compound / Epoxy Resin | DMC for outdoor harsh environment; Epoxy for indoor GIS |
| Compliance Standard | IEC 62271-209 | Global power project bidding acceptable certification |
| Installation Scene | GIS cabinet, RMU ring main unit, distribution transformer through-wall part | Direct replacement for original factory spare dimensions |
| Mechanical Service Life | ≥20 years maintenance-free | No regular disassembly maintenance required |
Contact our power equipment engineering team to confirm dimension drawing, voltage grade and bulk order quotation for magnetic field deflection bushings. We provide stable spot inventory and fast global door-to-door logistics for GIS equipment maintenance and new construction projects.
