Corona Rings Aluminum Grading Rings End Fitting Accessories for Insulator

• Customization: Available
• Technics: Die Casting
• Usage: Line Fittings
• Model NO.: Half tube/Hollow ring/Bird-proof type
• Type: Protection Fittings
• Material: Die-Casting Aluminum/Hot DIP Galvanized
• Transport Package: Wooden Case
• Specification: By voltage grade
• Trademark: MPC
• Origin: Guangzhou, China
• HS Code: 85479090
• Production Capacity: 500000piece/Year

Product Description

Half tube type

Hollow ring type

Bird-proof type

Alluminum alloy or Steel galvanizing ring

Corona ring is classified into closed corona ring of ordinary type, bird-preventing helmet closed ring, semi-ring by structure; die-cast aluminum, aluminum tube and stainless steel tube by material. The abovementioned rings are all of current-leading structure, that is, in the case of pollution flashover or lightening flashover when the composite insulator is operating, the current will be directly led to the terminal of end fittings instead of flowing through the terminal sheath and crimping part, so as to protect the seal part from damage and the crimping part from the impact of thermal expansion thereby resulting in the grip strength reduction of the metal fittings.

 

NO.	Outer diameter of grading ring (mm)	Remarks
1	160	Used for the high voltage terminal of 750kV product
2	232	Used for the high voltage terminal of 1000kV product
		Used for the high voltage terminal of±800kV product
3	250	Used for the product of 110kV-220kV
4	260	Used for the product of 110kV-220kV
5	300	Used for the product of 220kV-330kV
6	350	Used for the product of over 330kV-500kV
7	370	Used for 500 kV product
8	400	Used for ±500kV product
9	450	Used for the low voltage terminal of750kV product
10	560	Used for the low voltage terminal of±800kV product