Aerodynamic Profile
U160BD · 160 kN
A 160 kN aerodynamic disc with 155 mm spacing, 420 mm diameter and 380 mm creepage, weighing 8.5 kg. The widest disc in our range…
Creepage 380 mm
Ø 420 mm
Coupling 20
Industry Application
UHV And EHV Transmission Lines
Lines at 330 kV and above carry the load of an entire region. A single insulator failure on a UHV circuit is not a local outage, it is a system event, and the replacement window is measured in scheduled outages rather than hours.
Pain Points
What Goes Wrong In This Sector
- String failures on UHV circuits cause system-level events, not local outages
- Locating a punctured porcelain unit on a 500 kV string needs live testing and an outage
- Long river and valley crossings need mechanical ratings above the standard 70 kN class
- Pollution class often changes several times along a single route
Requirements
What Buyers Here Actually Need
- Mechanical ratings from 160 kN upward with consistent coupling sizes
- Batch-to-batch electrical consistency across tens of thousands of discs
- Profiles selectable per route section without changing coupling hardware
- Full type test and routine test documentation for grid acceptance
Recommended Models
Discs Suited To UHV And EHV Transmission Lines
Selected on mechanical rating, creepage distance and profile geometry for the conditions described above.
Two-alternating Profile
U160BSV · 160 kN
A 160 kN two-alternating disc with 155 mm spacing, 300 mm diameter and 450 mm creepage, weighing 8.4 kg. Alternating shed diameters…
Creepage 450 mm
Ø 300 mm
Coupling 20
Three-alternating Profile
U160BLT · 160 kN
A 160 kN three-alternating disc with 155 mm spacing, 330 mm diameter and 550 mm creepage, weighing 8.9 kg. The longest creepage…
Creepage 550 mm
Ø 330 mm
Coupling 20
How We Deliver
Support Across The Project Cycle
From selection through manufacture to on-site guidance, handled by the same engineering team.
Pre-Sales Technical Consultation
Selection starts from your line conditions, not from our catalogue.
Customized Design And Manufacturing
When the standard disc does not fit the site, we develop one that does.
Production And Quality Assurance
Defective shells are removed in our furnace, not on your tower.
Logistics And Global Delivery
Export packing and documentation handled as part of the order, not as an afterthought.
Project Record
Work In This Sector
Project
±800 kV Longdong To Shandong UHVDC Project
Jinhao developed an extra high mechanical strength insulator of 550 kN to meet the specific needs of SGCC for this project.
Project
750 kV Kuqa To Aral And Bachu Transmission Project
Jinhao developed an extra high mechanical strength insulator of 420 kN to meet the specific needs of SGCC for this project.
Answers
UHV And EHV Transmission Lines Questions
What mechanical ratings have you supplied for UHV projects?
Jinhao developed a 420 kN insulator for the 750 kV Kuqa to Aral and Bachu project and a 550 kN insulator for the ±800 kV Longdong to Shandong project, both to meet SGCC requirements.
Can profiles vary along one route?
Yes. Because the 160 kN discs share 155 mm spacing and 20 coupling, profile can change by route section without changing the string hardware.
What documentation do you supply for grid acceptance?
Technical documents, test reports and certification support, with testing to IEC 60383 and GB/T 1001.1.
Tell Us About The Route
Voltage, mechanical load, pollution class and quantity. We will size the string and confirm what we can deliver and when.