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.
Two-alternating Profile
Cap And Pin Type Two-alternating Profile Toughened Glass Insulator U160BSV
A 160 kN two-alternating disc with 155 mm spacing, 300 mm diameter and 450 mm creepage, weighing 8.4 kg. Alternating shed diameters break the continuity of a dry solid deposit layer.
160 kN
Creepage 450 mm
Spacing 155 mm
Ø 300 mm
Coupling 20
8.4 kg
Problems It Solves
Why Line Engineers Specify The U160BSV
- Coal cement and ore dust form dry adherent layers that a uniform profile cannot break up
- Washing access is often unsafe or impossible inside active industrial sites
- Adding discs to gain creepage raises tower height and clearance requirements
Key Benefits
What You Get In Return
- 450 mm creepage at 160 kN with a 300 mm disc diameter
- Alternating sheds interrupt continuous conductive deposit bridging
- Lower wind load than the 330 mm three-alternating disc at the same rating
- 130 kV dry lightning impulse withstand voltage
Technical Data
U160BSV Specifications
Mechanical, electrical, radio influence and packing values as tested to IEC 60383 and GB/T 1001.1.
| Mechanical Failing Load | 160 kN |
|---|---|
| Spacing H | 155 mm |
| Diameter D | 300 mm |
| Creepage Distance | 450 mm |
| Ball And Socket Coupling Size | 20 |
| Wet Power-frequency Withstand Voltage | 45 kV |
| Dry Power-frequency Withstand Voltage | 85 kV |
| Dry Lightning Impulse Withstand Voltage | 130 kV |
| Puncture Withstand Voltage | 130 kV |
| Test Voltage RMS To Ground | 10 kV |
| Maximum RIV At 1000 kHz | 50 microvolt |
| Corona Extinction Voltage Pin/Cap | 18/22 kV |
| Power Frequency Arc | 0.12 s / 20 kA |
| Net Weight | 8.4 kg |
Materials And Construction
A toughened glass disc bonded to a hot-dip galvanized steel cap and steel pin with a zinc sleeve, using high-strength alumina cement cured in a 70 degrees C water bath for about one hour.
Certifications
- ISO 9001 Quality Management System
- ISO 14001 Environmental Management System
- ISO 45001 Occupational Health and Safety Management System
- ISO 20001:2018 Energy Management System
- SR10:2015 / ISO 26000-2011 Social Responsibility Management System
- CMA and CNAS recognition on selected products
Who It Is For
Buyers Who Standardise On This Model
- Grid operators serving mining districts and cement works
- Utilities with lines crossing steel and coal-fired industrial zones
- Projects where insulator washing is not practical
Comparison
How It Compares
The U160BLT adds 100 mm of creepage for 0.5 kg and 30 mm more diameter. Where pollution is heavy but not extreme, the U160BSV keeps string wind load and diameter lower for the same mechanical rating.
Application Scenarios
Where The U160BSV Is Installed
Transmission lines through mining and mineral processing areas
Cement plant and steel mill corridors
Industrial zones with heavy dry particulate fallout
Manufacturing And Quality Control
The Four Stages That Decide Whether This Disc Reaches Your Tower
Toughening sets the mechanical rating, the thermal shock test removes defective shells, cementing fixes the fittings, and every finished unit is tested before it is packed.
5
Toughening And Tempering
Shells are heated close to the softening point, then high-pressure air jets cool the surface rapidly while the core cools slowly. The surface ends in compression at roughly 100 to 200 MPa with the core in tension, giving four to five times the mechanical strength of ordinary glass.
6
Thermal Shock Test
Shells are heated to about 300 degrees C and plunged into cold water, a drop of roughly 420 degrees C. Any unit carrying internal stress or an inclusion shatters here rather than in service. Survivors move on and the broken glass is recycled as cullet. A second thermal shock test follows to IEC 60383-1 and GB/T 1001.1.
7
Metal Fitting Assembly And Cementing
A hot-dip galvanized steel cap, steel pin and zinc sleeve are bonded to the toughened disc with high-strength alumina cement, then cured in a 70 degrees C water bath for about an hour so the cement develops full strength before handling.
8
Final Inspection And Testing
Every finished insulator is checked visually for cracks, bubbles, chips and bonding defects, then tested electrically for high-voltage withstand, insulation resistance and partial discharge, mechanically for tensile, bending and torsion strength, and environmentally for thermal cycling, pollution resistance and UV ageing.
Use Guide
Installing And Maintaining The U160BSV
Assemble the string with the matching ball and socket coupling size 20 and confirm that the security clip is fully seated on every unit before the string is lifted.
In service, inspect visually on routine patrols. A self-destructed disc is visible from the ground and the steel cap and pin continue to carry mechanical load until replacement. Clean in heavily polluted areas and replace broken units in the next planned outage. No complicated preventive tests are required.
We supply installation manuals, technical drawings and, for large projects, on-site installation guidance and string assembly training.
Customization Options
- Customised creepage distance for a specific pollution survey
- Special fittings and connection structures
- Colour packaging and marking customization
- Project-specific design under OEM and ODM arrangements
Related Projects
Lines Using This Class Of Disc
Related Products
Alternatives Worth Comparing
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
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
Further Reading
Guides Covering This Model
Guide
Self-Destruction In Toughened Glass Insulators Explained
Self-destruction is not a defect in the product, it is the product telling you something. Here is what causes it, what rate is normal, and why it is an advantage.
Answers
U160BSV Questions
What creepage does the U160BSV provide?
450 mm at 160 kN mechanical failing load, with 155 mm spacing and a 300 mm disc diameter.
What is the net weight of the U160BSV?
8.4 kg per disc, with 20 ball and socket coupling.
What are the electrical withstand values?
45 kV wet power frequency, 85 kV dry power frequency, 130 kV dry lightning impulse and 130 kV puncture withstand voltage.
Where is the two-alternating profile the right choice?
Mining districts, cement works, steel mills and coal-fired industrial zones, where deposits are dry, dense and strongly adherent rather than wet and conductive.
Get U160BSV Pricing And Test Data
Tell us the quantity and destination port. We will confirm lead time, packing configuration and the test report set that ships with the order.