Corona Rings For Gas Insulated Switchgear

corona rings for gas insulated switchgear

Are you looking forward to finding corona rings for gas insulated switchgear?

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.

What Is A Corona Ring

The corona rings, also called corona control rings, they can be used in high voltage test equipment and power systems (substations, high voltage transmission line, AC voltage system, etc.) and are mainly made of aluminum alloy.

Generally the corona ring needs to be polished bright to achieve more smooth and no burr surface finish to ensure better corona control effect.

Corona ring is widely used on the end fittings of high voltage bushings and other high voltage testing equipments. High voltage can result in unwanted noise and corona, so corona rings are needed.

Corona ring is suitable for the voltage form of alternating current (AC), which can distribute the high voltage evenly around the object to ensure that there is no potential difference (PD) between the various parts of the ring.

Corona Ring Technical Parameters

Product NameCorona Ring/Aluminum Corona Ring
Corona Ring Raw Material

Grade Aluminum Alloy 3A21/1060/6061/6063

Stainless Steel ASTM Grade 304/316L

Copper C1100

Matching FastenersASTM 304 Stainless Steel Or Hot Galvanized Steel
Surface FinishPolishing Silvery Bright, Ra3.2 Roughness
Other Surface TreatmentBlue Color Painting/Galvanized/Coating Insulating Varnish
Corona Ring Tube Wall Thickness2.0mm-10.0mm
OEM/ODMAs client’s drawings requirments
Middle Support Plate And BracketAluminum material or It can be customized as drawing requirement
Inner Diameter of Corona RingMinimum 190mm
Outer Diameter of Corona RingMaximum 16000mm
Production Type of Corona RingPipe Bending/Pressure Die Casting
Operating Voltage170kV-4200kV
Drawings SupportCAD/PROE/UG/SOLIDWORKS, etc
Ring Mould At stock or as your drawing new design and production
Corona Ring PackagingCarton Box/Wooden Pallet/Wooden Case
Loading PortShanghai/Ningbo/Any Other Port In China

What Materials Can Be Used For Corona Ring

It depends on corona rings design and manufacturing process.

Die casting rings materials are usually A380 and ZL101.

The custom aluminum corona rings are usually made from 6061 or 6063 thin wall tubing or pipe that is formed and welded with appropriate supporting brackets and other mounting standards.

In some special conditions, the stainless steel materials will be used for production.

Read More What Are The Materials Of Corona Rings?


Q1.How To Choose Corona Ring Manufacturer?

Over 30 Years R&D Experience

Highv owned advanced processing production equipments which can support you competitive price, high quality, in time delivery and good service. We have strong manufacturing capability, our automatic lathes, CNC machining centers, bending machines, welding machines and pressure die casting equipments plus auxiliary equipment like milling machine, grinding machine, wire EDM and the cooperation of our partners, we are able to support every different corona rings regardless of the samples or mass production.

Powerful Technical Support

Hard work of our quality control and technical design engineers team guaranteed the stable quality and good service.

OEM/ODM Service

Highv is professional at independent development and design. Our professional engineers team are skilled at AUTO CAD, PROE, SOLID WORKS and UG software. We are able to design, develop, produce and deliver your corona ring according to your detailed drawings, samples or just an idea.

Flexible Payment Term Support

Corona ring sample order is available. For small sample orders, in order to save the bank charge for customers and seller, West Union, Money Gram are well recommended.
For mass production, normally our company need 50% TT deposit before new production, and the 50% TT balance payment before shipment.

Our Warranty:

Once you receive the rings cargo, please open the packaging and check all cargo within 7 days. If there are any quality problems of rings, you just provide the photos of damaged them, then we will provide free rings for you. According to the number of products, we will provide easily damaged parts for free. We also can provide technical support if you need. Why not contact us here for saving your time and money.

Q2.How To Buy Corona Rings For Gas Insulated Switchgear?

1. Consult: We will recommend the most suitable solutions and ring moulds to you after being informed by your inquiries.

2. Quotation: We will offer you with our detail quotation according to the consulted corona ring. You will get the most suitable specifications, the full support and the affordable price.

3. Process Evaluation: Buyers and our side carefully evaluate and discuss all the details (technical parameters, specifications and business terms) of the order to exclude any misunderstanding.

4. Placing Order: If you have no doubt, we will send you the proforma invoice, and then we will sign a contract with you.

5. Production: We will arrange the ring new production immediately once receiving your signed purchasing contract and payment deposit. The coming news about production will be updated and informed to the buyer during the ring production.

6. Quality Control: The spirit of our company is that safety is the foundation of production and quality makes customers. We pay more attention to quality support, supply scope, inspection, testing standard, shipment packing, after-sales service.

7. Delivery: We will arrange the delivery as the terms in the contract after the confirmation by the buyer.

8. Custom Clearance: We will supply and deliver all the necessary shipping documents to the corona ring buyer and ensure a smooth customs clearance.

9. Support and Service: We will offer professional technical support and free service by Phone, Email, Skype, WhatsApp, Online Live Chat, Remote Service. We also have door-to-door service in some areas.

Q3.What Are Corona Rings Surface Treatment?

Usually the polishing silvery bright is the final main surface finish of corona rings not only for the indoor high voltage laboratory centers but also for the outdoor transmission lines.

The surface finish roughness is Ra3.2. The corona rings production process is according to DIN ISO2768-MK general tolerances.

Other manufacturing standard includes general tolerances for welded constructions, tolerances for lengths, angles, tolerances for shape and position, etc will be in accordance with EN ISO 13920-B-F.

Q4.What Is Corona Ring Packaging?

HIGHV has professional packaging team who can adopt developed packaging technology and packaging style to ensure the corona ring packaging quality.

Standard sea packing, the corona ring packing can be done by wooden case and carton box.

The wooden case and corona rings contact parts must be padded with foamed paper or rubber.

Wooden case four corners shall not be smaller than the size of the corona rings. Corona ring surface is wrapping foam paper, and four sides contacting with wooden case with foam mat protection.

In addition, clear labels are tagged on the outside of the packages for easy identification of the corona rings measurements and quality information.

Read More What Is Corona Ring And Shield Packaging? 8 Most Asked Questions

Q5.What Is MOQ Of Corona Ring?

If the corona ring mould is ready on stock, the MOQ will be less. 1 piece corona ring is workable.

If you need customized ones, the trial order MOQ is will be negotiated.

Q6.Can You Help Us Finish The Corona Rings Design?

If designing the aluminum corona rings for your project still seems overly complex, the best thing to do is consult an design and manufacturing expert.

HIGHV is one such specialist, with years of experience creating corona rings for a range of customers.

We are able to design, develop, produce and deliver aluminum corona rings according to customer detailed drawings, samples or just an idea.

Read More Designing Aluminum Corona Rings: 7 Things To Consider

Q7.How To Install Corona Rings For Gas Insulated Switchgear?

Want to learn how to install corona rings for your project?

In this part, you are going to learn more about all details of corona rings installation that help your high voltage test to be more successfully and efficiently.

Read More 5 Factors Of Aluminum Corona Rings Installation: The Beginner’s Guide

What We Can Do For Your Gas Insulated Switchgear Project

Highv is one of the leading corona rings manufacturers in China.

Our project manager and professional team members are very experienced of high quality corona rings and corona shielding parts for various industries, such as high voltage laboratory, high voltage capacitor banks, bushings, insulators, power transformers and different types of end-use components.

From aluminum pipe and plate materials to corona rings, here we can help you all corona shielding solutions.

Need a quotation or technical support of corona rings, call us or email us to get more information for your high voltage laboratory projects.