Corona Ring For High Voltage Bushing
The corona ring are widely used in transformer industry. HIGHV produces and manufactures various corona ring for high voltage bushing.
Contact our Highv team today to get your corona shielding solutions and details.
Corona Ring For High Voltage Bushing Data Sheet
| Product Name | Corona Ring/Aluminum Corona Ring |
| Corona Ring Raw Material | Grade Aluminum Alloy 3A21/1060/6061/6063 Stainless Steel ASTM Grade 304/316L Copper C1100 |
| Matching Fasteners | ASTM 304 Stainless Steel Or Hot Galvanized Steel |
| Surface Finish | Polishing Silvery Bright, Ra3.2 Roughness |
| Other Surface Treatment | Blue Color Painting/Galvanized/Coating Insulating Varnish |
| Corona Ring Tube Wall Thickness | 2.0mm-10.0mm |
| OEM/ODM | As client’s drawings requirments |
| Middle Support Plate And Bracket | Aluminum material or It can be customized as drawing requirement |
| Inner Diameter of Corona Ring | Minimum 190mm |
| Outer Diameter of Corona Ring | Maximum 16000mm |
| Production Type of Corona Ring | Pipe Bending/Pressure Die Casting |
| Operating Voltage | 170kV-4200kV |
| Drawings Support | CAD/PROE/UG/SOLIDWORKS, etc |
| Ring Mould | At stock or as your drawing new design and production |
| Corona Ring Packaging | Carton Box/Wooden Pallet/Wooden Case |
| Loading Port | Shanghai/Ningbo/Any Other Port In China |
*As a professional manufacturer, we strictly produce products according to the standard ASTM & GB/T
Corona Ring For High Voltage Bushing Resources
Corona Rings: Are They Needed?
Corona Rings: Are They Needed?Modeling predicts corona levels based on configuration, hardware and line voltage By Raymond Ferraro, Public Service Enterprise Group; Emilie Dohleman, Public Service Company of New Mexico;
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Corona Ring For High Voltage Bushing: The Ultimate Guide
Are you looking forward to finding Corona Ring For High Voltage Bushing application?
Check out the following buyer’s guide for high voltage test engineers, operators and beginners, we’ll offer you the high quality corona ring with 24/7 custom service to fit your drawing ideas and plans.
Contact our Highv team today to get your corona shielding solutions and details.
Why Aluminum Corona Rings For High Voltage Bushings?
High voltage bushings test produces high voltage, which cause the non-uniform local electric field.
The function of the corona ring is to distribute the electric field gradient and lower its maximum values below the corona threshold, either preventing corona discharge entirely or transferring its destructive effects from the valuable hardware to the ring.
A very similar related component, aluminum corona shielding cover, is also used on the top head of high voltage bushings.
What Is The Transformer High Voltage Bushing?
The transformer high voltage bushing is the main insulation device outside the transformer box.
The lead wires of the transformer windings must pass through the insulating sleeve to insulate between the lead wires and between the lead wires and the transformer casing, and at the same time play the role of fixing the lead wires.
Due to the different voltage levels, the insulating bushing has the form of pure porcelain bushing, oil impregnated bushing and capacitor bushing.
Pure porcelain bushings are mostly used in transformers of 10kV and below. It wears a conductive copper rod in the porcelain bushing, and the inside of the porcelain bushing is air insulated.
Oil impregnated bushings are mostly used in 35kV transformers. They are filled with oil in the porcelain bushing, and a conductive copper rod is inserted in the porcelain bushing, and the copper rod is covered with insulating paper.
Capacitor bushings are used on high voltage transformers above 100kV.
It is composed of main insulation capacitor core, outer insulation upper and lower ceramic parts, connecting bushing, oil pillow, spring assembly, base, corona shielding sphere, measuring terminal, connection terminal, rubber gasket, insulating oil, etc.
What Is The High Voltage Wall Bushing ?
The high voltage wall bushing refers to a device that allows one or several conductors to pass through a wall partition for insulation and support.
It is an important component in the power system.
In the process of manufacturing, transportation, and maintenance of high voltage wall bushings, latent defects may remain due to various reasons.
During long-term operation, defects will gradually occur due to the effects of electric field and conductor heating, mechanical damage, chemical corrosion, and atmospheric conditions.
What Is The HVDC Bushing?
According to different applications, HVDC bushings can be divided into HVDC transformer bushings, HVDC converter transformer valve side bushings, HVDC fully enclosed combined electrical (GIS) outlet bushings and HVDC wall bushings and so on.
- The HVDC transformer bushing is drawn from the transformer tank and connected to the power transmission line, which is the current carrying channel for the lead-in or lead-out wire of the transformer winding.
- The valve-side bushing of the HVDC converter transformer passes through the converter valve hall and is connected to the converter valve. It is the lead-in or lead-out wire carrying channel of the valve side winding of the converter transformer.
- The HVDC GIS outlet bushing is the current carrying channel of the GIS equipment lead wire, which is used to safely connect the transmission line.
- The HVDC wall bushing is the necessary channel for the power transmission of the converter station. It connects the DC transmission line outside the converter valve hall and the converter valve in the converter valve hall to introduce or draw HVDC power.
In HVDC engineering applications, the bushing operating environment is complex and needs to withstand the comprehensive working conditions of ultra-high voltage, high current, mechanical tension, vibration and atmospheric pollution.
This puts forward higher requirements on the electrical performance, mechanical performance, temperature rise control, and sealing performance of the casing.
The structure scheme, insulation material and production process of conventional voltage grade bushings cannot be directly applied to UHV bushings.
Conclusion
When it comes to design and production of Corona Ring For High Voltage Bushing, Highv’s 30 years of manufacturing experience will really show.
HIGHV engineers expert team are skilled at AUTO CAD, PROE, SOLID WORKS and UG softwares for your aluminum corona rings project.
Highv is one of the professional aluminum corona rings manufacturers in China, we are top leader aluminum corona rings factory. Contact us today.
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