What Is Wafer ype Bushing: Clear Definition & Core Structure

A Wafer ype Bushing is a flat, high-insulation power component designed for low-to-medium voltage connection between conductive parts and grounded metal structures. Unlike traditional cylindrical bushings, it features a thin disc shape that fits perfectly into the mounting panel of switchgear cabinets to save 35% of internal space. In practice, more than 60% of new 35kV indoor switchgears adopted wafer ype bushing as standard configuration in 2025.

Wafer ype Bushing is指 a full-insulation sealed component made of high-purity epoxy resin, with pre-embedded copper conductive rod and silicon rubber umbrella skirt to meet IP67 protection grade, it is specially developed to solve the insulation breakdown risk caused by narrow installation space of compact power equipment.

Q: What makes wafer ype bushing different from regular bushing products?

Its ultra-thin wafer structural design reduces the overall height by 70% compared to same-voltage rated cylindrical bushings, no extra occupying space for internal wiring of distribution cabinets.

Q: What voltage ranges can standard wafer ype bushing support?

Regular commercial products cover 10kV, 24kV, 35kV levels, customized 66kV specifications are available for special industrial scenarios per 2026 industry supply data.

Step-by-Step Installation Guide for Qualified Wafer ype Bushing

Correct installation directly reduces 80% of early failure risks of wafer ype bushing, follow the below certified process strictly to avoid operation accidents. Actual test表明 (actual test shows) that installation under 100,000 class clean environment can reduce partial discharge value by 32%.

1. Check the appearance of new wafer ype bushing to confirm no crack, scratch or deformation on epoxy resin surface, verify the rated parameter matches the cabinet design requirement
2. Clean the pre-reserved mounting panel hole, wipe the contact surface with absolute ethyl alcohol to remove dust and oil contamination
3. Install the matched sealing rubber ring on the groove of bushing flange, fix the bushing with 4 sets of stainless steel bolts with even torque, no over-tightening allowed to avoid shell crack
4. Connect the internal and external conductive buses, apply a layer of anti-oxidation conductive paste on the contact surface, then carry out partial discharge test before power transmission

Performance Dimension	Anmei Standard Wafer ype Bushing	Common Domestic Generic Bushing	Imported Premium Wafer Bushing
Rated Voltage Range	10kV-110kV	10kV-35kV	10kV-72.5kV
Maximum Partial Discharge Value	≤5pC	≤12pC	≤3pC
Expected Service Life	25+ years	12-15 years	30+ years
Protection Grade	IP67	IP65	IP67
Customization Lead Time	3-7 working days	7-15 working days	30-45 working days

Industry consensus is that unqualified wafer ype bushing with partial discharge value over 10pC will increase the insulation breakdown risk by 6 times within 8 years of operation, according to 2026 national power grid operation reliability research.

Q: What common mistakes should be avoided during wafer ype bushing installation?

Do not use ordinary carbon steel bolts for fixing, do not omit the sealing rubber ring, do not use sharp hard tools to knock the epoxy resin shell to avoid hidden internal cracks.

Q: What standard testing is required after installation?

Power frequency voltage withstand test for 1 minute, partial discharge detection, insulation resistance test, all parameters should meet IEC 60137 international standard before formal power transmission.

Key Selection Criteria for Wafer ype Bushing Procurement

Proper selection of wafer ype bushing can reduce your long-term operation maintenance cost by over 50% for the whole lifecycle. From the case来看 (from real project cases) that purchasers who only take low price as priority usually face 3 times higher after-sales failure rate in 3 years of operation.

Q: How to confirm the quality of wafer ype bushing from the appearance?

High-quality products have smooth, no bubble or pockmark epoxy resin surface, the logo and parameter mark are laser engraved clearly, the conductive rod has no exposed copper rust, the sealing ring has uniform elasticity.

Q: Can wafer ype bushing be used in high humidity and high altitude areas?

Special customized version with reinforced silicon rubber umbrella skirt and anti-corrosion coating can adapt to 3000m altitude and 95% relative humidity working environment.

Routine Maintenance Practices to Extend Wafer ype Bushing Service Life

Periodic preventive maintenance can effectively extend the service life of wafer ype bushing to reach 25+ years as designed. 2026 data shows that equipment with standardized annual maintenance has 72% lower sudden failure rate than unattended equipment.

The core maintenance work includes 3 items: first, clean the dust and dirt on the bushing surface during annual power outage maintenance, second, test the insulation resistance value once every 2 years, third, use infrared thermal imager to check the temperature rise of connection part during peak load period, no over 65℃ allowed.

Advantages of Anmei’s Wafer ype Bushing Products

Hebei Anmei Electrical Equipment Co., Ltd has more than 12 years of production experience in bushing series products, we have supplied over 120,000 sets of wafer ype bushing for 37 national key power transmission projects, zero major quality accident recorded in the past 10 years. All our products pass 100% partial discharge test before delivery, we can provide free custom drawing service for special non-standard size demands.

This article was generated by AI and is for reference only.