Corona Rings

Are you looking forward to having a plan or coming up with an idea to buy corona rings for insulator, bushing, capacitor, GIS, surge arrester, power transmission and transformer manufacturing?

corona rings

Corona Rings

Corona rings for high voltage laboratory, bushing, power transformer, capacitor, GIS, substation and insulator manufacturing, here you’ve come to the right place.

Check out the following buyer’s guide for high voltage test engineers, operators and beginners, we’ll offer you the high quality corona rings with 24/7 custom service to fit your drawing ideas and plans.

Contact our Highv team today to get you corona rings and solutions.

Corona Rings Technical Parameters

Product NameCorona Rings/Aluminum Corona Rings
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 MouldAt 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 Are The Features Of Corona Rings

For All Your High Voltage Needs

  • High strength
  • Excellent polishing bright finish
  • Corona shielding advantage
  • High moistureproof
  • Tasteless and non-poisonous
  • Anti-corona and Anti-causticity
  • Competitive price with good quality
  • Low MOQ (1 piece is even acceptable in some special conditions)
  • Customized sizes and specifications /OEM is also available

What Are Corona Rings Used For

HIGHV custom made solutions and corona rings are widely used for below applications

corona rings for high voltage laboratory

Corona Rings For High Voltage Laboratory

corona rings for high voltage bushing

Corona Rings For High Voltage Bushing

corona rings for high voltage divider

Corona Rings For High Voltage Divider

corona rings for power transformer

Corona Rings For Power Transformer

corona rings for lightning arrester

Corona Rings For Lightning Arrester

corona rings for circuit breaker

Corona Rings For Circuit Breaker

corona rings for high voltage insulator

Corona Rings For High Voltage Insulator

corona rings for power transmission line

Corona Rings For Power Transmission Line

corona rings for gas insulated switchgear

Corona Rings For Gas Insulated Switchgear

corona rings for uhvdc converter valve system

Corona Rings For UHVDC Converter Valve System

corona ring for high voltage impulse generator

Corona Rings For High Voltage Impulse Generator

What Materials Can Be Used For Corona Rings

Our expert team help choose the right materials for your customized corona rings production

6061 aluminum plates

6061 Aluminum Plates

6063 aluminum plates

6063 Aluminum Plates

1060 aluminum plates

1060 Aluminum Plates

3a21 aluminum plates

3A21 Aluminum Plates

6061 aluminum pipes

6061 Aluminum Pipes

6063 aluminum pipes

6063 Aluminum Pipes

1060 aluminum pipes

1060 Aluminum Pipes

3a21 aluminum pipes

3A21 Aluminum Pipes

304 stainless steel bars

304 Stainless Steel Bars

304 stainless steel pipes

304 Stainless Steel Pipes

316l stainless steel pipes

316L Stainless Steel Pipes

red copper materials

Red Copper Materials

Corona Rings Surface Treatment

Usually the polishing silvery bright is the final main surface finish of aluminum 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.

Corona Rings Projects Showcases

corona ring showcase 1
Product NameCorona Ring
Material UsedAluminum 6063
Surface FinishPolishing Bright
ApplicationHigh Voltage Test
Delivery CountryUSA
corona ring showcase 2
Product NameCorona Ring
Material UsedAluminum 3A21
Surface FinishPolishing Bright
ApplicationHigh Voltage Lab
Delivery CountryGermany
corona ring showcase 3
Product NameCorona Ring
Material UsedAluminum 6061
Surface FinishPolishing Bright
ApplicationHigh Voltage Divider
Delivery CountryFrance

Call us any time or email us for more benefits to support your customized projects.

Corona Rings Videos Showcases

China HIGHV Corona Rings Demo, Customized Aluminum Corona Rings For Russia Customer

Corona Rings More Resources

What Are The Differences Between Corona Rings And Grading Rings

corona rings used for high voltage laboratory

Why Corona Rings Used For High Voltage Laboratory: The Complete Guide

corona ring design guide blog banner

Corona Ring Design: The Definitive Guide

What Is Corona Ring Packaging?

  1. Highv has professional packaging team who can adopt developed packaging technology and packaging style to ensure the corona ring packaging quality.
  2. 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’s surface is wrapping foam paper, and four sides contacting with wooden case with foam mat protection.
  3. In addition, clear labels are tagged on the outside of the packages for easy identification of the corona rings measurements and quality information.

Looking For Solutions In Customized Corona Rings

Corona Rings: The Ultimate Guide

Corona ring is one of the most important components in power industry.

With the development of science and technology, more and more quality rings are widely used in the transformers, bushings and insulators industries.

So what are the benefits of using them? What’s the production process of corona rings? How to design them?

In this guide, we will show you details about all.

So enjoy the read...

What Are Corona Rings?

The corona rings, also called aluminum corona 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.

How Does The Corona Rings Work?

The corona ring is widely used for high voltage industry to suppress corona effectively. At sharp point (like bushing head) the electric field is high which results in corona. Aluminum corona ring ( corona shielding ring) should be installed at this point. The 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.

The larger outside diameter, smooth polishing surface finish of aluminum corona rings can help control the local electric field. So electric field gradient reduces and suppresses the corona. As the testing voltage increases the outside diameter of the required corona ring/shielding ring must also increase to obtain better corona control effect. Highv has rich decades of experience in corona rings design and shielding solutions technology, uses advanced manufacturing equipments and high efficient drawing software, which can make sure user’s every project to run more smoothly, safely and efficiently.​

How Corona Rings Are Made?

When it comes to corona rings production, Highv’s 30 years of manufacturing experience really shows. Let’s introduce how to make corona ring here.

Before we share the production process of corona ring for you, you could get a quick glance for below picture process.

corona ring production process

What Are The Types Of Corona Rings?

Types of corona rings include:

  1. Single and double corona rings
  2. High voltage test use corona rings
  3. Aluminum and stainless steel corona rings
  4. Insulating corona rings

What Are The Benefits Of Using Corona Rings?

Corona rings are used in high voltage testing equipment, such as power transformers, HV bushings, power cables.

The benefits of using corona rings are:

  1. High reliability: The corona ring manufactured by us has high quality that provides good corona control effect, which allows the device to work under high voltage smoothly.
  2. Easy installation: The installed corona rings are ready for immediate use, which ensures a short downtime of your test during maintenance.
  3. Affordable price: We can offer you corona ring at an affordable price due to our extensive experience in manufacturing this type of products and close cooperation with suppliers of aluminum, copper and stainless steel raw materials.

What Is Corona Discharge On A Corona Ring?

Corona is a plasma discharge, which occurs when the electric field around a conductor exceeds the dielectric strength of the air, causing electrical current to flow through the air. Corona discharges are typically seen as a faint bluish glow caused by ionization of the surrounding gas.

The ionization can be further enhanced if impurities (e.g., dust or smoke particles) are present in the air. The resulting partial discharge can produce ozone and other harmful products.

The common spark plug uses corona discharge to ignite the air-fuel mixture in internal combustion engines. Corona discharges can also occur on high voltage power lines and other large electrical equipment such as transformers, bushing, and insulators.

Corona rings are used for improving and stabilizing corona discharge. Corona rings are used on transformers and insulators to help stabilize the corona discharge from occurring at random along an insulated conductor or surface.

Corona rings are typically made from copper or aluminum with a very small gap between it and the conductor that it surrounds. This gap helps prevent arcing across the gap to ground when there is no voltage applied to the conductor that it surrounds but may not prevent arcing between it and that conductor when voltage is applied, thus creating corona discharge.

How To Choose China Corona Rings Manufacturers?

As the one of leading corona rings manufacturers in China, Highv is professional at manufacturing and supplying of aluminum corona rings with 30 years experience.

The engineers expert team are skilled at AUTO CAD, PROE, SOLID WORKS and UG softwares for your corona rings design and production.

You will get the high quality corona ring with affordable price from us.

HIGHV offers complete corona shielding solutions, 24/7 one-to-one free service and support, which is available free.

How To Get The Corona Ring Price From China Manufacturers?

In the current economic environment, more and more companies are looking for ways to reduce costs.

In all areas of the company, if you can find better options, you can reduce costs. The same applies to the purchase of goods. Many companies are hoping to find the best source of goods in China.

Although the cost is lower than the local production cost, some buyers worry that they will encounter quality issues when purchasing goods from Chinese factories.

In fact, if you work with professional suppliers in China, there is no need to worry about quality issues.

This guide will tell you how to get the best corona ring price from China manufacturers.

Step 1: Compare the corona ring price from different suppliers

As we all know that China has a huge manufacturing base, which means you can compare the prices of your product from many different suppliers, so you can choose the best price for you.

Step 2: Negotiate with manufacturers to get a better corona ring price

When you find a good supplier and want to buy their corona ring product, you can negotiate with them to get a better price.

Step 3: Get corona ring samples

After you find some potential suppliers, ask them for free corona rings samples. When you receive the samples, check their quality, and ask your customers or partners to check them as well. If everything is OK, then negotiate with the suppliers about the good price and other details.

If you are a buyer, the best way to choose the professional corona rings manufacturer is to compare and choose two or three suppliers then communicate with them firstly by mail, telephone or Skype. This is an important step because it can help you reduce the risk of being cheated. If you find them trustful, then you can visit their factory in China.

How To Buy Corona Rings?

1. Consult: We will recommend the most suitable solutions and corona 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 corona ring 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 corona 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.

What Is The HS Code of Corona Rings?

To find out the detailed HS code of high voltage related corona rings, you need to determine the materials grades and applications of them.

The following are the part of aluminum corona rings.
HS code: 76169910.90

Corona Rings FAQs

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.

What Is The Delivery Time?

It depends on your corona rings order total quantity.

Usually from the start of the order to the completion of production for about 2-3 weeks.

How Do Your Team Deal With 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.
We have passed ISO9001 quality management system certification.

Quality Control Process:

  • Checking the metal raw material after they reach our factory- Incoming quality control
  • Checking the details before the production line operated
  • Have full inspection and routing inspection during mass production-In process quality control
  • Checking the goods after they are produced- Final quality control
  • Checking the goods before shipment

At the same time, we will help take photos and shoot videos for you if you need. Every corona ring product will be fully assembled and carefully tested before packing and shipping.

Can You Help Provide The Samples Of Corona Rings?

We have powerful stock of many corona rings moulds and samples.

If your request samples are the same size in our stock, we will deliver them by international express for every client.

The samples fee and express charge should be paid by customers.

Can You Help Us Finish The Corona Rings Design?

Are you thinking of designing your corona ring? If yes, then you have chosen the right platform as we are going to tell you all about the design of corona rings.

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.

1.Choose The Right Material For High Voltage Corona Ring Design:

Aluminum alloy is the main material which have good weldability for corona ring design and production process. After the welding production, highv staff will set about doing polishing process. As you know, the soft aluminum material is easily for polishing for making sure the good corona effect. The ring are made of aluminum sheet and aluminum pipes. The bending tube production is easily for small rings. Because we only need the pipe bending machine to finish this step. The large rings production process is more difficult.

Grade 3A21, 6061, 6063 aluminum material are on highv stock. Before design the rings, we will confirm the right material with customers. More advantages of the common materials in corona shielding rings.

2.The Type Of Corona Ring Design:

Here two types of ring will be introduced. One is single ring without any brackets. Another one is known as corona ring set. It is also known as phase to earth ring set. The detailed design drawings will be offered by customers. Of course highv team could also help customer redesign new moulds and drawings.

3.Single Corona Ring VS Corona Ring Set Detailed Design Process:

Highv is professional at independent development and design. Our professional engineers team are skilled at AUTO CAD, PROE, SOLID WORKS and UG softwares. We are able to design, develop, produce and deliver rings according to customer detailed drawings, samples or just an idea. If the mould is our stock standard, the mould is free of charge. If it is customized one, the extra high voltage corona ring design drawing and fee will be needed.

How Can I Choose The Right Size Of Corona Rings?

Corona rings are widely used in high voltage testing systems such as power transformers and bushings.

The corona rings mainly play a role in the corona control. The surface of the corona ring is treated by anodizing, and it has excellent characteristics such as high strength, good wear resistance, etc.

But how to choose the right size of corona rings?

  1. The first parameter is the inner diameter ID of the corona ring.
  2. Second is the outer diameter OD of the corona rings.
  3. Third is the height H of the corona ring.
Talk to an Expert
Discuss customized corona rings, grading rings, shielding rings and components for your project