Epoxy bushing overview This epoxy bushing is a cast epoxy insulator integrated with a conductive insert and flange connection to provide insulated passage for live conductors through grounded barriers. The product is engineered for medium and high voltage applications where moisture resistance, mechanical strength, and stable dielectric performance are required.

Key features

• High dielectric strength achieved through void-free epoxy casting and controlled curing.
• Excellent moisture resistance and weatherability for outdoor and indoor installations.
• Low partial discharge values ensuring long term reliability and reduced risk of insulation failure.
• Mechanical robustness with high compressive and flexural strength to withstand handling and operational stresses.
• Compatible with copper or aluminum conductor inserts and standard flange mounting interfaces.
• Customizable lengths, voltage ratings, and flange patterns to match existing equipment or retrofit needs.
• Flame retardant formulations available to meet fire safety requirements.

Typical technical specifications

• Voltage ratings: 12 kV, 24 kV, 36 kV, 72.5 kV and custom ratings on request
• Rated current: up to 2000 A depending on conductor size and cooling
• Creepage distance: designed per application and pollution degree, extended options available
• Dielectric strength: >20 kV/mm (typical bulk epoxy)
• Operating temperature range: -40°C to +105°C continuous
• Thermal class: Class F or H options
• Partial discharge: <5 pC at rated voltage typical
• Material: high grade epoxy resin with mineral fillers; conductive insert material copper or aluminum
• Protection class: IP65 or higher depending on sealing and flange configuration

Benefits

• Enhanced safety by isolating live conductors from grounded equipment structures.
• Reduced installation time with preassembled, ready-to-mount units.
• Lower lifecycle costs due to long service intervals and minimal maintenance.
• Improved performance in polluted or humid environments compared to porcelain alternatives.
• Flexibility for retrofits and compatibility with standard mounting patterns.

Applications

• Power transformers and distribution transformers
• Circuit breakers and switchgear assemblies
• Capacitor banks and reactors
• Outdoor substations and pole-mounted equipment
• Renewable energy installations such as wind and solar substations
• Industrial power distribution panels and motor control centers

Installation and maintenance guidance

• Inspect units on receipt for surface defects and shipping damage prior to installation.
• Ensure flange and gasket surfaces are clean and flat; torque bolts to manufacturer recommendations.
• Use appropriate conductor sizing and crimping methods for the conductive insert to avoid hot spots.
• Avoid mechanical stresses beyond specified limits; support conductors where necessary.
• Periodically clean external surfaces to remove contaminants that could reduce creepage distances.
• Perform routine electrical tests such as insulation resistance and tan delta or partial discharge testing according to maintenance schedules.

Testing and certifications

• Routine factory tests include high voltage withstand, partial discharge measurement, and dimensional inspection.
• Type tests available per IEC 60137, IEEE standards, or customer-specific specifications.
• Optional certifications: UL, CE, RoHS compliance, and other regional approvals as requested.

Ordering information and customization

• Standard catalog numbers for common voltage and flange patterns; custom part numbers for tailored designs.
• Provide application details: system voltage, conductor size, flange dimensions, mounting orientation, and environmental exposure.
• Lead times vary with volume and customization level; expedited options available for urgent replacements.
• Packaging designed to protect against impact and moisture during transit; installation instructions included.

Packaging and shipping

• Individual crates or pallets with protective padding and desiccant packs for long transit.
• Shipping markings include handling orientation and fragility warnings.
• Optional on-site delivery and installation support available.

Contact and support

• Technical datasheets, CAD drawings, and installation manuals supplied upon request.
• Engineering support available for selection, retrofitting, and testing procedures.
• Spare parts and repair services offered to extend operational lifetime.

This epoxy bushing is intended to deliver dependable insulating performance and mechanical durability for a wide range of power distribution and industrial applications. For specification matching or quotation, provide the application parameters and required standards so the correct type can be recommended.