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40.5kV 315~630A Dry-type Silicone Rubber Composite Wall Bushing

This 40.5kV dry-type silicone rubber composite wall bushing adopts a composite structure of epoxy resin inner core and high-temperature vulcanized silicone rubber outer housing, with rated current ranging from 315A to 630A. It is specially designed for wall penetration insulation of 40.5kV high-voltage switchgears, transformers and substations. Replacing traditional fragile porcelain bushings, it features high and low temperature resistance, anti-aging, anti-pollution flashover, high mechanical strength and maintenance-free performance. Complying with GB/T 4109-2022 and IEC international standards, it is widely used in power transmission and distribution fields such as industrial power distribution, power grid and new energy power stations.

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Silicone Rubber Bushing

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Product description

Product Introduction

This 40.5kV dry-type silicone rubber composite wall bushing adopts a composite structure of epoxy resin inner core and high-temperature vulcanized silicone rubber outer housing, with rated current ranging from 315A to 630A. It is specially designed for wall penetration insulation of 40.5kV high-voltage switchgears, transformers and substations. Replacing traditional fragile porcelain bushings, it features high and low temperature resistance, anti-aging, anti-pollution flashover, high mechanical strength and maintenance-free performance. Complying with GB/T 4109-2022 and IEC international standards, it is widely used in power transmission and distribution fields such as industrial power distribution, power grid and new energy power stations.

Core Advantage

Safe & Explosion-proof: Dry oil-free structure, no oil leakage or explosion risk, zero hidden danger during operation.
Weather & Pollution Resistant: Silicone rubber housing with hydrophobic and anti-ultraviolet performance, suitable for high altitude, heavy fog and humid environments.
Excellent Mechanical Performance: High toughness composite structure, shock and crack resistant, zero damage during transportation and installation compared with porcelain bushings.
Maintenance-free & Long Lifespan: Stable insulation, low partial discharge and low loss, service life over 20 years, reducing operation costs greatly.   
Complete Specifications: Full current range of 315A-630A, customized sizes available for global 40.5kV high-voltage equipment.
                      

Technical Parameter

Executive Standard：GB/T 4109-2022, IEC 60137 

Highest System Voltage：40.5kV 

Rated Continuous Current：315A / 400A / 500A / 630A 

Rated Frequency：50Hz / 60Hz
Lightning Impulse Withstand Voltage (Peak)：200kV
Operating Temperature：-40℃ ~ +85℃
Partial Discharge Value (1.05Ur)：≤10PC
1min Power Frequency Dry Withstand Voltage：95kV
1min Power Frequency Wet Withstand Voltage：85kV

Other Available Specification

Our company specializes in the R&D and production of a full range of high and low voltage silicone rubber composite bushings. Our products cover multiple voltage levels including 10kV, 35kV and 110kV, with various standard current specifications, suitable for high-voltage equipment such as switchgears, transformers and substations. We support customized non-standard sizes, special structures, heavy-pollution types and high-altitude dedicated products. All items are manufactured and tested in strict accordance with international electrical standards, featuring excellent insulation performance, high mechanical strength, outstanding weather resistance and anti-aging properties. With stable operation, maintenance-free performance, reliable quality and punctual delivery, our products are widely applied in power engineering projects at home and abroad.

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