500kvCorona Shield Rings For Overhead Line Fitting , Grading Ring Surge Arrester
DIN,ISO, Non-Standard or according to customers’requirement
Power Hardware, Cable Hardware,High Voltage Test etc
International standard package such as carton wooden or according to your requirements
According to the quantity of products but will as soon as possible
L/C, T/T, Western Union
30% TT before the produce, 70% before the shipment
Place of Origin
Name: 500kv Corona Ring
Material of 500KV corona ring for overhead line hardware: Aluminum
Other material made form forged steel, die-casting aluminum is also available in our factory
Applicant for 500KV corona ring: 500KV polymer insulator.
Tube Thickness of 500KV corona ring for overhead line hardware: 3mm
Matched with two sets of M8 stainless steel screw and nut
What is Grading Ring?
Compared to electric porcelain insulator, composite insulator is featured with high intensity, light weight, high wet-flashover and flashover voltage, easy operation maintenance, strong ability of impulse withstand, widely applied to transmission line suspension string, and has spread application in tension string in recent years. Surface field distribution and potential distribution for composite insulator without corona ring is greatly uneven, due to composite insulator structure characteristics and high resistivity feature of silicon rubber, surface field density is highest at mandrel and steel cap joint, distribution voltage is highest at first umbrella dress near high voltage end. Exorbitant surface field density not only generate corona discharge, affect transmission line electromagnetic environment, produce audible sound pollution, but also cause strong electric erosion, causing further insulator aging. Corona ring installation is the normal solution to the problem of uneven potential field density distribution at insulator high voltage end. Installation of corona ring helps to transfer maximum field density from insulator surface to corona ring surface, thus effectively improves electric field distribution on insulator surface.
Corona Ring Material
Aluminum, steel and copper are main material for Corona Ring and shielding components.
The corona ring packing can be done by wooden case and cartons.
1). Wooden Packing:
Wooden packing suitable for heavy weight corona rings. For export, Fumigation Certificate will be necessary when case is made of solid wood.
1.No bark allowed on wooden package.
2.Ship fumigated wooden package as soon as possible, ensure separate storage and segregation with non-fumigated wooden materials.
3.Validity of the certificate of fumigation is 21 days.
Inquire local ship agency whether fumigation is necessary every time after learning the lot package material, booking with a certain answer. Method of wood case fumigation include chemical preparation method and heat treatment.
2). Carton Packing:
Carton Packing always light weight and convenient for moving by hands. Its suitable for light weight rings.
1. Customers' special need is welcome, from mold to samples within 10 days.
2. Over 8 years' exporting experience, all inquiries responded within 12 hours.
3. Exported to over 20 countries, products test reports provided on request.