Products

Electrical & Grid

Porcelain Insulator

Gas Insulated Switchgear Lead-out Porcelain Bushing

Brand: WISHPOWER
Standard: ANSI
Features: Multi-layer sealing structure, avoids leakage of water or oil during running. Porcelain bushing is made of high-strength inorganic material. Good weather resistance, anti-tracking, anti-aging, and electrical corrosion and hydrophobicity property.
Color: Red, Grey, Blue, Yellow, Other
The product's dimension, characteristics, connection method, and shed color can be designed and manufactured according to the customer's specific requirements.

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DESCRIPTION

Specification

Rated Voltage(kV)		330
Shed No.		83
Creepage Distance(mm)		8666
Cantilever Failing Load (kN.m)		51
Main Dimensions(mm )	H	3640
	h1	130
	h2	70
	D	510
	d	360
	d1	540
	d2	120
	d3	270
	d4	19
	d5	15
	n	12
Inner Hydro Test( Mpa )	Withstand Load of Inner Pressure	2
	Withstand Time (min)	5
	Failing Load of Inner Pressure	2.8
Weight(kg)		473

The table above is just one of our product parameters. If you want more information, please get in touch with info@wishpower.net

What is Gas Insulated Switchgear Lead-out Porcelain Bushing?

Gas-insulated switchgear (GIS) Lead-out Porcelain Bushing is a unique accessory that is employed to connect the GIS to other systems in a safe manner. This bushing is used in high-voltage circuit applications where it offers the function of electrical insulation and mechanical support to the circuit. The porcelain material acts as an insulator for the high voltage conductor where it passes through grounded enclosures thus minimizing electrical leakages and making safe passage. Such a bushing is indispensable in GIS uses since the devices that operate at high pressure are installed in confined spaces, and thus, compact and highly reliable solutions are needed. The porcelain ensures that the product is long-lasting and is protected from the harsh effects of the environment such as humidity, dust, and other pollutants. The lead-out bushing mainly serves the purpose of preserving the insulating gas, internal to the switchgear, which might be SF6 or any other type since they are used as insulating mediums and at the same time safely directing the electrical connections outside the GIS compartment.

Features

Compact design

These gas-insulated bushing models are specially created for GIS and are comparatively smaller than the conventional ones, thus they conserve space in areas such as urban substations.

Gas sealing capability

Compared with the general plane bushing, it is particularly intended to ensure that the good insulation feature of the insulating gas (generally SF6) in the switchgear housing is not affected and leaked.

Sealing of the high insulation performance in enclosed systems

Design for use in a fully enclosed gas-insulated environment, these bushings offer better insulation characteristics at operating voltage levels than those used in air-insulated systems.

Enhanced environmental protection

It is highly immune to degradations from the environment and is suitable for use in places where there is a lot of pollution, unlike the bushing that is used for outdoor applications as they are highly unstable in such an environment.

Minimal maintenance requirements

Since it is built with an internal shield and protection, it undergoes fewer maintenance needs as compared to the bushing type which is exposed to outdoor operations hence minimizing operating expenses.

Benefits

Insulating gas leakage protection

The porcelain bushing is designed to prevent insulating gas leakage within the GIS, ensuring that the system maintains its insulation properties and operates efficiently over a long period, which is critical in a gas-insulated environment.

Enhanced electrical performance

As part of a sealed GIS system, it minimizes external influences such as moisture or dust that can degrade electrical performance, enabling stable and high-quality power transmission.

Compact and modular integration

Its compact design makes it easy to integrate into modular GIS units, facilitating the construction of high-capacity power systems in limited spaces without sacrificing performance.

Optimized for high-voltage environments

These bushings are specifically designed to operate at higher pressures in gas-insulated systems, ensuring stability and reliability in this unique operating condition.

Fewer environmental restrictions

Since it operates in a closed GIS environment, it is less affected by external weather conditions or pollution, so it can maintain consistent performance regardless of location.

Can it withstand pressure?

Yes, This switchgear bushing is designed to withstand the high pressure typically found in gas-insulated systems. Here’s how it handles pressure:

High-Pressure Tolerance

The bushing is engineered to operate under the elevated pressures of the insulating gas (usually SF6) used in GIS. This ensures it can maintain its insulating properties and structural integrity under these conditions.

Pressure-Resistant Design

Its design includes robust porcelain material and advanced sealing technologies to handle the internal pressure of the GIS, preventing gas leaks and ensuring the system remains sealed.

Mechanical Strength

The porcelain used in the bushing is specifically selected for its strength and durability, allowing it to resist mechanical stresses and pressure without compromising performance.

Certificate

Factory

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