High Voltage Products

1.Reliable Quality: Rigorous inspections and controls ensure material excellence and stable performance.
2.Advanced Technology: Significant R&D investment yields better insulation and precise control.
3.High Security: Comprehensive safety mechanisms reduce risks for personnel and equipment.
4.Stable Performance: Maintains stable electrical and mechanical properties under all conditions.
5.Long Lasting: Quality materials and craftsmanship ensure a long life, reducing maintenance costs.
6.Good After-Sales Service: Professional teams provide prompt technical support and maintenance.

Fuse Cutout

1.Porcelain,polymer concrete,or siliconeinsulators available
2.Cutout/arrestercombo available
3.Optional seacoast design
4.Option...

Polymer Insulator

1. Excellent insulation performance, high efficiency and isolation of current, preventing leakage and short circuit, and improving the safety of el...

Lightning Arrester

1 Good protection performance: can effectively limit overvoltage and protect electrical equipment from damage.
2 Fast response speed: can res...

China High Voltage Products Manufacturer

High-voltage electrical products are electrical equipment and components that work in high-voltage environments or are used to handle high voltages.

The following are some common high-voltage electrical products:
● High-voltage switchgear: used to control, protect and isolate high-voltage circuits to ensure the safe operation of the power system.
● Transformer: realizes voltage conversion, such as reducing high voltage to adapt to different electricity needs.
● High-voltage cable: transmits high-voltage electrical energy and has good insulation properties.
● High-voltage insulator: plays the role of support and insulation, ensuring electrical isolation between conductors and other parts.
● Lightning arrester: used to limit lightning overvoltage and operating overvoltage, and protect electrical equipment from damage.
● High-voltage circuit breaker: capable of opening and closing high-voltage circuits and quickly cutting off current in the event of a fault.
● High voltage transformer: used to measure current and voltage in high voltage circuits.

SUNJ high-voltage electrical products play an important role in all aspects of power generation, transmission, transformation and distribution of the power system. Their performance and quality directly affect the reliability and safety of the power system. For example, in a substation, high-voltage switchgear, transformers, and transformers work together to ensure the effective distribution and transmission of electric energy; while high-voltage cables transport electric energy from the substation to various users. With the continuous development of technology, high-voltage electrical products are constantly updated and improved to adapt to higher voltage levels, more complex operating environments and more stringent performance requirements.

Polymer Insulator – Design, Applications & Mechanism

Originally, insulators were made from materials like ceramic and glass. But in 1963, a new type, made from polymers, was introduced. However, recent improvements in their design and making have made them popular with power companies and utilities. These insulators have a fiberglass core and are covered with protective parts made of rubbery materials such as silicone, polytetrafluoroethylene, or EPDM. They also have metal parts at both ends for connection. Also, known as composite insulators, they combine at least two different insulating materials, a sturdy core and a protective housing with end fittings.

Why are “polymers” considered insulators? Polymers are considered “insulators” due to their molecular structure, which does not allow for the free flow of electrons. This resistance to electron movement means that electric charges do not easily pass through these materials.

In terms of thermal insulation, the valence electrons in these polymers are tightly bound to their atoms, which prevents them from conducting heat. Additionally, polymers can possess a high dielectric strength, which refers to the ability of a material to withstand electric fields without breaking down. This characteristic makes them excellent at resisting the flow of electric current.

Also, electrical insulators are materials that do the opposite of conductors—they block the flow of electricity. These insulating materials are crucial in the electrical and electronics industries, serving to protect against electric shock and to ensure that electrical circuits operate safely and effectively.

Over 18 Years Direct Factory

SUNJ is committed to providing customers with a full range of power transmission solutions.

80+

Countries served

32+

Utility Approvals

800+

Projects Executed Globally

SUNJ Products More Information

SUNJ Electric is a power transmission and distribution enterprise with R&D, manufacturing, trading and services. With excellent quality, design and manufacture and competitive prices, SUNJ products are top sellers in China and have exported to Asia, Europe, America, Middle-East and Africa and numberous other regions. We warmly welcome all over the world friends cooperate with us. Together to contribute a better and stronger power system.

Why Are Lightning Arresters important?

A lightning strike releases a huge amount of energy in just a few seconds. This energy can strike buildings or electrical systems, causing serious damage. To protect these structures and systems, we install Lightning Arresters at their highest point.

Lightning Arresters are key components of a comprehensive Lightning Protection System. They protect the power system by creating a low-resistance path for lightning charges to follow to the ground. This way, the charges are safely grounded, and the electrical systems remain safe from lightning damage.

There are mainly two types of lightning arresters available in the market:

1.Conventional lightning arresters or Franklin rods
2.Early Streamer Emission (ESE) lightning arresters

Request a Call/Email Back

Send Us Your Inquiry