Transformer Bushing | Wishpower High Voltage Insulation Connection Solution

Product Overview

A transformer bushing is a key insulation and connection component used in power transformers and distribution transformers. It allows the internal winding leads to pass safely through the grounded transformer tank while maintaining reliable electrical insulation. Wishpower transformer bushings are designed for different voltage ratings, installation methods and operating environments, making them suitable for substations, transmission and distribution systems, renewable energy projects and industrial power equipment.

Product Overview

Wishpower transformer bushings are available in composite, porcelain, dry type, oil filled, RIP and OIP structures. They are designed to meet the insulation, mechanical and environmental requirements of transformer applications.

Main advantages include:

• Suitable for power transformers, distribution transformers and substation equipment;

• Available for voltage levels from 10kV to 500kV;

• Composite, porcelain, dry type, oil filled, RIP and OIP structures available;

• Reliable insulation performance and mechanical strength;

• Good weather resistance and pollution performance;

• Creepage distance can be customized according to pollution level;

• Terminal, flange and installation dimensions can be customized;

• Wishpower provides bushing solutions for transformer manufacturers and power projects.

Core Features

1. Stable Insulation Performance
   The transformer bushing provides reliable insulation between live conductors and grounded transformer components.

2. Wide Transformer Compatibility
   Suitable for power transformers, distribution transformers, step-up transformers and main transformers.

3. Multiple Structure Options
   Available in composite, porcelain, dry type, oil filled, RIP and OIP configurations.

4. High Mechanical Strength
   Designed with good bending, tensile and vibration resistance for long-term operation.

5. Good Pollution Performance
   External insulation and creepage distance can be selected according to outdoor pollution conditions.

6. Flexible Customization
   Voltage rating, current rating, flange size, terminal structure and installation method can be customized.

Product Structure

A transformer bushing generally consists of the following components:

• Central conductor: Carries current and connects transformer windings with external circuits;

• Main insulation: RIP, OIP, epoxy resin or oil-paper insulation structure;

• External insulation housing: Composite silicone rubber housing or porcelain housing;

• Mounting flange: Fixes the bushing to the transformer tank;

• Upper and lower terminals: Provide electrical connection at equipment and line sides;

• Sealing components: Prevent moisture ingress and improve reliability;

• Field grading structure: Optimizes electric field distribution and reduces partial discharge risk;

• Test tap or voltage tap: Available for some condenser type bushings.