Specification

Wishpower strictly implements domestic and international industry standards and the products it produces comply with international standards such as IEC and ANSI. They have also passed professional tests such as KEMA and STRI. Is your company interested in purchasing hollow insulators or do you need help? Please get more information directly through this website or info@wishpower.net

What is Composite Hollow Core Insulator?

The Composite Hollow Core Insulator is an advanced insulator type that has been specifically developed for use in high-voltage electrical applications to provide insulation and support live electrical components in a robust and robust configuration that is also capable of withstanding harsh environmental conditions. The insulators consist of a fiber-reinforced epoxy tube core, encapsulated by a silicone rubber or similar polymer outer layer yielding excellent environmental stress tolerance. The properties of this outer layer comprised enhanced hydrophobicity, UV resistance, and pollution resistance while keeping dielectric properties even under highly polluted or humid conditions. Unfortunately, it has a unique feature of its hollow core: it can be designed with critical equipment such as current transformers, circuit breakers, or surge protectors in the insulator body itself. The design greatly reduces the equipment support requirements for the design, thereby reducing total assembly weight and volume, critical for installations in confined or remote environments. Furthermore, the silicone shell provides structural stability and service life even at temperature fluctuation; as it is a flexible silicone shell, it accommodates thermal expansion and thermal contraction.

Why are insulators designed to be hollow?

1. Space for internal components:

The hollow design allows the composite hollow insulators to accommodate important electrical components like current transformers, circuit breakers, or surge protectors. A reduction in the need for additional structural support and the ability to pack the equipment into a smaller space is particularly valuable in installations with limited space or high-density substations due to integration with this technology.

2. Reduced weight:

The hollow structure makes these insulators much lighter than solid core alternatives. The weight reduction also simplifies transportation, handling, and installation and reduces the loading of the supporting structure. It is particularly useful for high-voltage towers, as the reduced weight helps maintain stability and safety as a whole.

3. Enhanced thermal management:

The hollow structure allows for natural air circulation within the insulator that dissipates the created heat from the high-voltage operation. Thermal management is effective to prevent insulator overheating and potential service life extension is achieved.

4. Improved mechanical flexibility:

The hollow core can effectively tolerate slight movement and stresses due to thermal expansion and contraction or mechanical forces (wind loads or earthquake activity). This flexibility allows the structural integrity of the insulator to be maintained over a long term, in harsh environmental conditions.

5. Improved voltage withstand capability:

Since larger sizes of insulators can be manufactured without appreciably increasing the weight, hollow insulators are appropriate for use in ultra-high voltage applications. The hollow design increases the insulator’s ability to safely and reliably withstand high voltages because, at the same time, it can support a larger gap between live and grounded parts.

Application

1. High-voltage circuit breakers

Composite hollow insulators are sometimes used as structural and insulating support for circuit breakers in high-voltage substations. The hollow design allows such encapsulation of components of the circuit breaker mechanism while providing electric insulation and supporting mechanical stability in the switch operation.

2. Gas Insulated Switchgear (GIS)

In GIS systems it is essential, wherein the live parts are changed from the grounded enclosure in a compact design. Internal space for insulating gas (such as SF₆) is created in the hollow structure to improve insulation performance and ensure safe, reliable operation in substation confined space.

3. Voltage and current transformers

Current and voltage transformers in high-voltage installations live inside these insulators. The transformer components are accommodated in the hollow core, with the necessary insulation and protection from external contaminants, so that electrical parameters can be accurately measured and monitored.

4. Surge protectors

It can also act as the place for electric surge protector components to be housed and protect the electrical systems from transients that can potentially produce overvoltages. For outdoor installations where lightning strokes or voltage surges are frequent, their weather-resistant materials and flexibility enable them to be placed in these areas.

5. Bushing in Power Transformers

In power transformers, it is an insulation and mechanical support bushing for conductors that enter and leave the transformer casing. Thermal expansion and contraction are controlled by the hollow core which stabilizes insulation and transformer reliability.

6. High Voltage Test Equipment

High-voltage test labs and facilities use hollow core insulators as part of equipment that mimics operating voltage and stress loads. Critical to an accurate and safe testing environment, they are also able to safely house high-voltage components, and maintain insulation integrity.

About Wishpower

Certificate

Hot Tags: Composite Hollow Core Insulator, Composite Insulator, Thailand, manufacturers, ISO factory, wholesale, KEMA, high quantity, best, price, low to high voltage