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Epoxy bushing

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Product Attributes:
B Type Insulator
Type: High-voltage
A Type Insulator
Application: High-voltage
Material: Porcelain
Structure: Bushing Insulator
High Voltage Power Transmission
Connection Method: Trough Type
Size of Bearing Capacity: 550KN
Certification: CCC
Color: Yellow
Operation: Energy-storage Type
High-Speed Circuit Breaker
Arc-extinguishing Medium: Vacuum
Installation: Fixed
Poles Number: 3
Conventional Circuit Breaker
Grounding Mode: Grounding
Horizontal Rotary Type
Number of Poles: Three Pole
Grounding: Un Grounded
Series: Three
Run: Vertical Rotation
Switching Mode: Single Throw-in
Structure of Operating: Manual
Maximum Voltage: <10KV
Thermal Rating: H 180
Flexibility: Semi-rigid
Thickness: 6 mm
Inner Diameter: 8 mm
Phase: Single
Core: Core-type Transformer
Oil-immersed Type Transformer
Winding Type: Auto-transformer
Frequency Characteristics: Low Frequency
Shape of Core: OD
Application: Low-voltage
Application: High-temperature
Application: Electrical Insulation
Wire & Cable Protection
Application: Automotive Harnessing
Application: Communication industry
Application: Machine Protection
Application: Power
Application: Electronic
Material: Composite Polymer
Material: Semiconductor
Material: Silicone
Structure: MCB
Structure: Single-column Disconnector
Structure: Post Insulator
Usage: Insulation
Usage: Driving
Usage: Electrical Installation
Usage: Power Transformer
Usage: Distribution Transformer
Connection Method: Spherical Type
Size of Bearing Capacity: 300KN
Size of Bearing Capacity: 60KN
Certification: CE
Certification: ISO9001
Certification: ISO9001-2000
Certification: ISO
Color: Red
Color: Brown
Color: White
Color: Grey
Operation: Manual
Installation: Indoor High-voltage
Circuit-Breaker Failure Protection
Maximum Voltage: 20KV~100KV
Thermal Rating: F 155
Thermal Rating: 220 220
Flexibility: Rigid
Flexibility: Flexible
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Sourcing guidance for Epoxy Bushing

What are the key technical specifications to consider when sourcing epoxy bushings for high-voltage applications?

When selecting epoxy bushings, you must prioritize dielectric strength and partial discharge levels. Ensure the product meets IEC 60137 or IEEE C57.19.01 standards. Key specs include rated voltage (kV), rated current (A), and lightning impulse withstand voltage (BIL). For outdoor use, verify the creepage distance to prevent tracking in polluted environments. Additionally, confirm the use of vacuum casting technology to ensure a void-free epoxy structure, which is critical for long-term insulation reliability.

How can I verify the thermal and mechanical stability of epoxy bushings?

Request test reports for Glass Transition Temperature (Tg); a higher Tg indicates better performance under high-temperature loads. Mechanically, the bushing must withstand cantilever loads specified for your equipment. Ensure the supplier uses high-grade epoxy resin (such as Huntsman or equivalent) mixed with silica flour to optimize the coefficient of thermal expansion (CTE), preventing cracks during thermal cycling between -40°C and +105°C.

What compliance certifications are mandatory for international power grid projects?

Suppliers should hold ISO 9001:2015 for quality management. For the product itself, Type Test Reports from independent laboratories like KEMA, CESI, or TUV are essential. If exporting to the EU, CE marking and RoHS compliance (ensuring no hazardous substances in the resin) are required. For North American markets, adherence to ANSI/IEEE standards is a prerequisite for grid integration.

Cross-Border Procurement & Risk Management for Epoxy Bushings

What are the primary risks when importing epoxy bushings and how can they be mitigated?

The biggest risks are internal micro-cracks caused by improper curing or transport vibration, which are invisible to the naked eye. Mitigate this by requiring 100% X-ray inspection and Partial Discharge (PD) testing before shipment. Use Made-in-China.com's Secured Trading services to ensure payment is only released after third-party inspection (like SGS or Intertek) confirms the technical parameters meet your PO.

How should I negotiate lead times and logistics for fragile electrical components?

Epoxy bushings are heavy yet brittle. Negotiate for customized plywood crates with shock-absorbing foam inserts and tilt indicators. For logistics, FOB or CIF terms are standard, but ensure the contract specifies sea-worthy packaging. Lead times for customized bushings (non-standard dimensions) typically range from 30 to 45 days; always build a 2-week buffer for customs clearance and potential sea freight delays.

What strategies can be used to ensure transaction security and supplier legitimacy?

Always verify if the supplier is an Audited Supplier on Made-in-China.com, which confirms their factory existence and production capacity. Request a factory walkthrough via video call to see the vacuum casting chambers and testing lab. Avoid suppliers who refuse to provide material traceability records for the copper conductors or the epoxy resin batches used in your order.

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