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Composite capacitive wall bushing
For use in a variety of electronic systems and devices, an Electronic Components manufacturer creates a broad range of electronic components and devices, such as resistors, capacitors, diodes, integrated circuits, and more.
Hewei is a supplier of capacitive bushings, which are crucial components in high-voltage equipment like transformers and circuit breakers. Capacitive bushings ensure safe electrical insulation while allowing conductors to pass through grounded barriers. Hewei’s capacitive bushings are designed for high performance and reliability, supporting the smooth operation of power systems by enhancing insulation and voltage distribution in critical applications. Their products play a key role in maintaining the efficiency and safety of electrical networks.
Hewei, a leading wall bushing manufacturer, specializes in designing and producing durable, high-performance wall bushings for various industries, ensuring safe and organized cable management through walls and partitions.
Composite capacitive wall bushing is an innovative product that combines the functionality of a traditional wall bushing with the unique properties of capacitive materials. This advanced design not only provides a secure and protective passage for wires, cables, or pipes through walls and partitions, but also incorporates capacitive elements that can enhance the electrical performance of the system.
As a pioneering composite capacitive wall bushing manufacturer, our company leverages cutting-edge materials science and engineering expertise to create innovative products that combine the strength and durability of composites with the electrical benefits of capacitive technology. Our wall bushings are designed to meet the most stringent requirements of modern electrical systems, ensuring safe, efficient, and reliable cable management.
Composite Capacitive Wall bushing with CT
For applications that require additional monitoring capabilities, we offer Composite Capacitive Wall Bushings with CT (Current Transformer) integrated. Our composite bushings’ insulating qualities are combined with a current transformer’s functionality in this creative design, which allows for real-time current measuring and monitoring and improves system dependability and safety overall.
Our composite capacitive wall bushing with CT (Current Transformer) offers a unique solution for monitoring and measuring current flow through cables. This advanced design combines the protective and organizational benefits of a wall bushing with the functionality of a CT, allowing for real-time current monitoring without the need for additional hardware. Perfect for applications requiring precise current measurements, our composite capacitive wall bushing with CT simplifies installation and maintenance while enhancing system performance.
Composite Wall Bushing:
Composite wall bushings are the go-to choice for demanding applications that require superior strength, durability, and electrical insulation. Manufactured from advanced composite materials, these wall bushings provide a secure and protective passage for wires, cables, or pipes through walls and partitions. Their lightweight yet robust construction makes them ideal for use in a wide range of industries, from telecommunications to industrial automation, where reliable cable management is crucial.
Porcelain Wall Bushing:
Porcelain wall bushings are a time-honored solution for electrical insulation and cable management. Known for their exceptional dielectric strength and resistance to arcing, porcelain bushings offer a durable and reliable option for high-voltage applications. Our porcelain wall bushings are crafted from high-quality porcelain materials and undergo rigorous testing to ensure they meet or exceed industry standards. Whether used in power transmission lines, transformers, or other electrical equipment, our porcelain wall bushings provide a safe and secure passage for cables, ensuring optimal system performance.
Working principle of capacitive bushing
Basic Structure:
A capacitive bushing typically consists of a conductive central core (usually a metal rod) surrounded by an insulating material (such as silicone rubber or epoxy resin). The insulation is further surrounded by an outer conductive layer or a grounding shield.
Capacitive Element:
The capacitive bushing acts like a capacitor. The central conductor serves as one plate of the capacitor, while the surrounding conductive shield (or the bushing’s external metal casing) acts as the second plate. The insulating material in between these two conductive elements forms the dielectric layer.
Voltage Application:
When a high voltage is applied to the central conductor, an electric field is established between the central conductor and the outer shield. This electric field allows the bushing to store electrical energy, just like a capacitor.
Voltage Measurement:
The capacitance created by this arrangement can be used for measuring voltage levels. The capacitive bushing is often connected to measurement equipment that can detect the voltage across the capacitor formed by the bushing.
Signal Proportionality:
The voltage on the central conductor induces a proportional voltage on the outer shield due to the capacitive coupling. This induced voltage can be used to monitor the voltage levels in the power system.
Insulation Function:
Besides its capacitive function, the bushing also serves as an insulator, ensuring that the high voltage does not leak into the surrounding environment. The insulating material prevents arcing and electrical breakdown, allowing safe operation in high-voltage applications.
What type of insulation is used for composite capacitive wall bushing?
Composite capacitive wall bushings typically use a combination of materials for insulation, designed to provide excellent electrical properties, mechanical strength, and resistance to environmental factors. Here are the main types of insulation commonly used:
Silicone Rubber:
Description: Silicone rubber wall bushing is widely used for its excellent electrical insulation properties, flexibility, and resistance to extreme temperatures.
Advantages: It provides good hydrophobicity, reducing the risk of moisture absorption, and maintains performance over a wide temperature range.
EPDM (Ethylene Propylene Diene Monomer):
Description: EPDM is a synthetic rubber known for its excellent weather resistance, UV stability, and good dielectric properties.
Advantages: It is highly resistant to ozone, oxidation, and temperature variations, making it suitable for outdoor applications.
Polyurethane:
Description: Polyurethane is often used in the outer layers of composite bushings for its durability and abrasion resistance.
Advantages: It provides a tough protective barrier against mechanical wear and environmental factors while maintaining good electrical insulation.
About us
Our team comprises highly experienced engineers and commercial and business professionals who strive to procure the best available product or brand in the market as per the budgetary requirements of the client. We ensure the best return on your investment in systems and technologies.
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