Porcelain bushing

Porcelain Bushing – High Voltage Insulation Solutions

Porcelain bushings provide safe electrical insulation and mechanical support for transformers, switchgear, and other high voltage apparatus. ASIAPOWER manufactures bushings compliant with international standards including DIN, EN, BS, and ANSI, ensuring global compatibility and reliable performance under extreme conditions.

Standard Compliant Bushings

  • DIN / EN bushings: Designed per DIN 42530 and EN 50180, voltage range 12kV to 123kV, widely used in European and Asian substations.

  • BS bushings: Manufactured according to BS EN 60137 and BS 923, featuring high creepage distance for desert and coastal environments.

  • ANSI bushings: Conforming to IEEE C57.19.01 and ANSI C76.1, available from 5kV to 230kV for North American utility projects.

Customed Bushing
We offer fully customized bushings tailored to client specifications – including flange dimensions, terminal types, creepage distance, and internal grading. OEM/ODM services are available for unique transformer or switchgear designs.

CT Bushing
Current transformer bushings integrate a built-in CT core within the bushing structure, providing both primary insulation and current measurement. Ideal for compact substation solutions where space is limited.

Capacitor Bushing
Capacitor-type bushings (also known as capacitance graded bushings) feature internal capacitive layers for uniform voltage distribution along the porcelain insulator. These are essential for EHV transformers (up to 1000kV) where stress control is critical.

All ASIAPOWER porcelain bushings undergo partial discharge testing, power frequency withstand tests, and leakage current measurement per IEC 60137. Third-party witnessed test reports available upon request.

Available types include:

  • Transformer Bushings

  • Capacitor Bushings

  • Switchgear Bushings

Our bushings are manufactured to IEC standards and suitable for 11kV–36kV voltage classes, ensuring excellent electrical insulation, mechanical strength and long service life.

👉 Porcelain Transformer Bushings (DIN / ANSI / BS)

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