MV Epoxy Resin Plug-in Bushing – Fully Insulated, Maintenance-Free Connection For Distribution Transformers

Apr 13, 2026

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SUVELL | Epoxy Resin Plug-in Bushing for Distribution Transformers

 

At SUVELL, we design and manufacture high-performance epoxy resin plug-in bushings specifically engineered for distribution transformers. Built with advanced APG casting technology and premium weather-resistant materials, our bushings deliver fully insulated, maintenance-free, and long-lasting connections for pad-mounted and compact distribution transformers worldwide.

 

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We understand the core demands of global power networks: safety, reliability, ease of installation, and minimal lifecycle cost. That is why every SVELL plug-in bushing integrates fully shielded structure, precise DIN/IEEE 386 plug-in interface, high-conductivity copper conductors, and transformer-grade sealing to ensure stable operation even in harsh outdoor, coastal, high-humidity, and industrial environments.

Automatic Pressure Gelation (APG) Technology

As the core manufacturing process for high-end epoxy bushings, Automatic Pressure Gelation (APG) technology is the key differentiator that sets your products apart from those of low-end manufacturers.

Featuring fully automatic APG pressure gelation processing, casting is performed in a vacuum environment to eliminate air bubbles, pores and shrinkage marks.This results in products with a dense and uniform internal structure, extremely low partial discharge (PD) and outstanding insulation stability.Ideal for long-term outdoor operation of distribution transformers, the products resist aging and cracking effectively.

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High-Weather-Resistant & Anti-Fouling Epoxy Resin Formulation Technology

Specially designed for long-term outdoor service of distribution transformers.

  • UV-resistant
  • Wide temperature tolerance: -40℃ to 125℃
  • Resistant to salt spray, moisture and oil contamination
  • High comparative tracking index (CTI ≥ 600V)
  • Anti-condensation and anti-tracking performance, suitable for coastal areas, industrial zones and highly polluted regions

High-Conductivity Copper Conductor Integrated Molding Technology

Ensures high current capacity, low heat generation and long service life.

  • Adopts T2 copper or tin-plated copper conductors
  • High conductivity and low temperature rise, ideal for long-term full-load operation of distribution transformers
  • Conductor is integrally cast with epoxy resin, free from loosening and poor contact
  • Specially optimized heat dissipation structure for high-current models (630A)

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By focusing on professional manufacturing, strict quality control, and consistent mass production, SVELL provides reliable, standardized, and interchangeable bushing solutions that help transformer builders and power utilities reduce failures, simplify on-site installation, and improve overall system safety.

 

Choose SUVELL - professional manufacturer of medium-voltage insulating components, dedicated to bringing stable and trustworthy power connection solutions to global distribution networks.