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
Industry Application
Substations And Switchyards
Substation yards concentrate equipment, heat and pollution in a small footprint. Strings here are short, heavily loaded and surrounded by structures that make washing and replacement awkward.
Pain Points
What Goes Wrong In This Sector
- Deposit builds fast in a confined yard with transformer and cooling air movement
- Replacement inside an energised yard means long clearance procedures
- Busbar and dead-end strings carry higher mechanical loads than line suspension strings
- Radio interference and corona are scrutinised more closely near control buildings
Requirements
What Buyers Here Actually Need
- High creepage in a short string where discs cannot simply be added
- 160 kN class ratings for tension and dead-end applications
- Controlled corona extinction voltage and RIV performance
- Profiles that resist the specific deposit chemistry of the yard
Recommended Models
Discs Suited To Substations And Switchyards
Selected on mechanical rating, creepage distance and profile geometry for the conditions described above.
Anti-Fog Profile
U70BLP · 70 kN
A 70 kN anti-fog disc with 146 mm spacing, 280 mm diameter and 450 mm creepage, weighing 5.3 kg. Deep under-ribs hold a dry band…
Creepage 450 mm
Ø 280 mm
Coupling 16
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
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
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
Substations And Switchyards Questions
Which profile suits a confined switchyard?
Where the string is short and discs cannot be added, buy creepage inside the disc. The U160BLT gives 550 mm and the U70BLP gives 450 mm at their respective mechanical ratings.
What corona and RIV performance do your discs have?
Corona extinction voltage of 18/22 kV pin to cap and a maximum RIV of 50 microvolt at 1000 kHz with a 10 kV RMS to ground test voltage, across the listed range.
Do you supply assembled strings for substation use?
Yes. We supply complete sets covering discs, coupling fittings and assembly strings.
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.