The rapid development of power equipment, transformer manufacturing, and the new energy industry is driving continuous growth in the demand for high-performance insulation materials. Insulating paperboard is a critical insulating component used in transformers, reactors, instrument transformers, and other equipment. Its quality directly affects the safety, stability, and service life of the equipment.
Xujue Electrical is a leading domestic supplier of insulating paperboard. With professional technology, stable product quality, and a comprehensive service system, the company has become a long-term partner of many power engineering enterprises and transformer manufacturers.
Xujue Electrical has been deeply involved in the insulation materials industry for many years, integrating R&D, production, and sales. The factory is equipped with a full set of production equipment and testing instruments, including a pulp-mixing system, continuous pressing production line, high-temperature drying equipment, and complete testing devices. This ensures full-process quality control and guarantees stable performance and reliable quality for every batch of insulating paperboard.
Xujue’s insulating paperboard uses high-purity cellulose as the raw material. Through specialized processing, its electrical strength can exceed 50 kV/mm, while maintaining a stable dielectric constant. It effectively prevents current leakage and avoids equipment short-circuit failures.
The product offers high strength, tear resistance, and puncture resistance, and can maintain structural stability even in long-term operation at temperatures above 120°C. It is suitable for harsh working conditions such as high-speed motors and heavy-load transformers.
The products comply with RoHS, REACH, and other environmental directives, and contain no halogens or harmful substances. They are certified by international safety authorities such as UL and CSA, meeting global market access requirements.
The manufacturer can customize dimensions, thickness, density, and surface treatment according to customer requirements, meeting diverse application needs across various industries.
As a professional supplier of insulating paperboard, Xujue Electrical provides various types of insulating paperboard for transformers and different kinds of electrical equipment, including:
Used for the main insulation system of oil-immersed transformers
High dielectric strength, excellent mechanical strength, and good oil absorption
Complies with IEC 60641 and GB/T 3028 standards
Used for manufacturing spacers, clamping parts, and insulation supports
Excellent compression resistance and high-temperature performance
Supports CNC machining and molded forming of complex insulation structures
High dimensional accuracy, excellent dimensional stability, and strong oil and heat resistance
Supports customization in thickness from 0.5 mm to 50 mm
Provides lamination, cutting, punching, slotting, and other processing services
Xujue Electrical’s insulation materials are widely used in the following equipment and applications:
Oil-immersed power transformers
Dry-type transformers
Reactors and instrument transformers
High- and low-voltage switchgear
Motors and welding equipment
New energy storage systems and power electronic devices
With stable product performance, the company has established long-term partnerships with numerous domestic and international power equipment manufacturers, EPC contractors, and power engineering companies.
To meet the needs of global customers, Xujue Electrical strictly follows the following standards in its production processes:
IEC 60641 Insulating Pressboard Standard
GB/T 3028 Electrical Pressboard Standard
RoHS Environmental Protection Directive
Every batch of products undergoes testing for dielectric strength, density, moisture content, and mechanical properties to ensure stable insulation performance under high temperature, oil-immersed conditions, and strong electric fields.
Choosing Xujue Electrical means gaining access to high-quality products and professional supporting services:
Over 65 years of industry manufacturing experience with strong technical expertise
Direct factory supply, and significant price advantages
Large inventory of standard models for fast delivery
Product testing reports available
Customized processing services and technical selection guidance
With extensive export experience, our products are available in Europe, Southeast Asia, the Middle East, and Africa.
Xujue Electrical is a leading domestic supplier of insulating paperboard, providing safe and reliable insulation material solutions for global power and industrial projects.
If you are looking for a professional insulating paperboard supplier, we welcome you to contact Xujue Electrical. We will provide you with suitable products and technical support.
If you need our products please write down any questions, we will reply as soon as possible.
There are three ISO certificates for quality certification. The certificates will be shown later. ISO
After receiving the advance payment, the production cycle is 15-25 days. And the transportation cycle should be calcul……
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