PUTAI's epoxy insulators provide structural support and electrical isolation for high-voltage equipment, engineered to withstand extreme environmental stresses.

Insulation Component
ALL Inflatable Cabinet Bushing Series Contact Box Wall Bushing Sensors Embedded Poles Epoxy Insulator Elbow Plates Series
Switchgear
ALL Vacuum Circuit Breaker (VCB) Load Switch Disconnecting Switch Earthing Switch / Grounding Switch Switchgear Outdoor Vacuum Auto Recloser
Protection Equipment
ALL Fuses Surge Arresters
Transformer
ALL Distribution Transformer Dry Type Transformer Oil-Immersed Transformer
Cable Accessories
ALL Cold Shrink Cable Accessories Heat Shrink Cable Accessories High Voltage Cable Plug and Socket Connector Explosion proof Joint Enclosure Cable Fusion Splice Cable Branch Box
SM Bus Bar Insulator(DRUM)
  • Voltage Wlthstand:5kV ~ 30kV
11kV / 12kV Series Post Insulators
  • Rated Voltage:11kV / 12kV
  • Dimensions:φ85×170 mm
  • Rated Current:1600A
  • Power Frequency Withstand Voltage:42kV
  • Lightning Impulse Withstand Voltage:85kV
33kV / 35KV Series Post Insulators
  • Rated Voltage:33kV / 35KV
  • Dimensions:φ155×380 mm
  • Rated Current:3150A
  • Power Frequency Withstand Voltage:95kV
  • Lightning Impulse Withstand Voltage:185kV
ZJ Series 12kV Post Insulators
  • Rated Voltage:12kV
  • Material:Epoxy resin
ZJ-24KV Series Post Insulators
  • Rated Voltage:24kV
  • Dimensions:φ110×225 mm
  • Rated Current:2000A
  • Power Frequency Withstand Voltage:65kV
  • Lightning Impulse Withstand Voltage:125kV
12KV Integrated Insulator 630～1250A
  • Rated Voltage:12KV
  • Rated Current:630～1250A
24KV Integrated Insulator
  • Rated Voltage:24KV
  • Rated Current:1600A
35KV Integrated Insulator
  • Rated Voltage:35KV
  • Rated Current:2500A
Characteristics of Epoxy Insulator
Rated Voltage
12kV ~ 35kV
Rated Current
630A ~ 5000A
Power Frequency Withstand
38kV ~ 95kV
Lightning Impulse Withstand
75kV ~ 185kV
Material
Epoxy Resin
Compatible Equipment
Circuit Breaker/Isolator
Materials
6 global material development partners
Detection
100% internal dielectric and thermal performance testing
Compliance
Designed to meet IEC/ANSI standards
Traceability
Complete batch traceability and leading technical support
Why Choose Us
Strong weathering resistance
adapt to extreme environments such as coastal, high pollution, high temperature and high humidity.
High reliability
Reduces the risk of grid failures and reduces maintenance costs.
International Standard Adaptation
Meet the requirements of power equipment in the European, Middle East and Southeast Asian markets.
FAQ
What mechanical load can the insulator withstand?
Rated mechanical load ranges from 70kN to 210kN, suitable for HV transmission towers and substations.
Is it suitable for extreme temperatures?
Operating temperature ranges from -50°C to +200°C, ideal for deserts or polar regions.
How does it prevent pollution flashover?
Creepage distance reaches 300mm/kV, certified for IEC 60507 Pollution Level IV.
Can dimensions be customized?
Yes. Customizable height, shed design, and interface dimensions.
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Service & Support
Our certification team consists of 85+ engineers with more than 20 years of professional experience
24/7 Service. Average emergency response time is limited to less than 12 hours
Suitable for substations, industrial power grids, new energy projects and other demanding scenarios
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