BusBar with PET Insulating Paper are widely used in various industries, and PET insulation technology enables equipment to operate efficiently and safely

Apr 12, 2026

With the trend of power electronic equipment upgrading towards higher power, miniaturization, and higher safety, BusBar with PET Insulating Paper are gradually becoming core conductive connection components in new energy, power electronics, and high-power industrial fields due to their unique structural design and excellent electrical performance. Through refined surface treatment to create a reliable performance substrate, and relying on the core protective advantages of PET insulating paper, they achieve efficient adaptation in multiple industry scenarios. Collaborating with related categories such as laminated and laminated copper busbars, they provide strong support for the safe and stable operation of equipment in various industries, driving the industry towards high efficiency and safety.

 

BusBar with PET Insulating Paper

 

Performance Basics

 

The superior performance of the insulating paper busbar stems from its refined surface treatment process, which is also the foundation for its adaptability to complex working conditions in multiple industries. The conductor core adopts a T2 oxygen-free copper foil or copper bar stacked structure, and the surface is treated with tin and nickel plating, which can effectively prevent oxidation, reduce contact resistance, and significantly improve conductivity stability and corrosion resistance, meeting the performance requirements of laminated copper bars. The insulation layer is entirely covered with white flame-retardant composite insulating film PET insulating paper and epoxy insulating layer. The branch terminals and sampling terminals are marked with red insulation, which not only distinguishes polarity but also enhances safety protection. The high voltage resistance, flame retardancy, anti-aging, and wear resistance of the PET insulation layer can fully meet the high-voltage electrical safety protection requirements of various industries. Exposed metal terminals and mounting holes are treated with nickel or zinc plating to enhance rust prevention and mechanical connection reliability. Green insulating gaskets and positioning blocks effectively isolate the conductor from the mounting structure, while also playing a positioning and buffering role. The FR-4 material PCB board integrated at the sampling terminal can efficiently realize BMS signal acquisition, ensuring the stability of equipment operation in all aspects.

 

BusBar with PET Insulating Paper

 

Core Applications

 

In the new energy field, insulating paper busbars serve as a core application scenario, fully demonstrating their adaptability and practicality, and becoming an important support for promoting the high-quality development of the new energy industry. In new energy vehicle power battery packs and industrial and commercial energy storage power station modules, insulating paper busbars achieve integrated connection of high-current main circuit power distribution and BMS signal sampling. They not only undertake the responsibility of high-voltage, high-current transmission and distribution, but also connect to the battery management system (BMS) through branch sampling terminals to collect real-time cell voltage and temperature data, ensuring the safety monitoring and balanced management of the battery system. Their laminated insulation structure enables compact wiring, adapting to the limited space of modules, while compensating for installation tolerances and thermal expansion and contraction deformation. In conjunction with Laminated Bars for Power Capacitor DC Link, they enhance the reliability of energy storage systems, contributing to the large-scale development of the new energy vehicle and energy storage industries.

 

Scene extension

 

In the field of power electronics equipment, insulated paper busbars, with their excellent electrical performance, have become core power distribution components for equipment such as photovoltaic inverters, power storage converters (PCS), and UPS power supplies. Their multi-layered design effectively reduces stray inductance and improves power transmission efficiency. The high-voltage protection performance of the PET insulation layer fully meets the high-voltage safety operation requirements of equipment, adapting to specific scenarios such as Laminated BusBars for PV Inverters and Laminated Bus Bars for High Current Inverters. This solves the insulation risks of traditional power distribution components in high-voltage, high-frequency scenarios, promoting the upgrading of power electronics equipment towards higher efficiency and smaller size, and providing a guarantee for the stable operation of new energy power generation fields such as photovoltaics and energy storage.

 

application of BusBar with PET Insulating Paper

 

Widely compatible

 

In high-power industrial equipment scenarios, the resilience of insulating paper busbars to harsh operating conditions is fully utilized, making them widely used in the internal conductive connections of equipment such as rail transit traction electrical systems, industrial frequency converters, and high-power charging piles. Their excellent vibration fatigue resistance allows them to adapt to the complex operating conditions of industrial environments, enabling multi-channel current distribution and signal acquisition within confined spaces. They also meet the requirements for high voltage and high reliability, complementing other product categories such as BusBar for Electric Locomotives and Motor Drive Laminated Bus Bar for Power Electronics, thereby improving the operational stability and lifespan of industrial equipment and contributing to technological upgrades in fields such as industrial automation and rail transportation.

 

Future Outlook

 

As industries continue to demand higher safety and efficiency from equipment, the application scenarios for BusBar with PET Insulating Paper will further expand, and their surface treatment processes and PET insulation technology will continue to be optimized. In the future, leveraging their core advantages of compact structure, high-voltage protection, and high conductivity, insulating paper bars will further penetrate more high-end industrial and new energy sub-sectors, developing in synergy with related products such as Laminated Bars. This will empower the upgrading of power transmission and distribution systems across industries, promoting safe, efficient, and sustainable development.

 

Contact Us

 

For solutions and technical support on BusBar with PET Insulating Paper suitable for new energy, power electronics, or industrial applications, please feel free to contact us.

 

Ms Tina from Xiamen Apollo

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