U550B (240/380/600) Glass Insulator
- As a representative of large-tonnage toughened glass insulators, the U550B, with its high mechanical strength of 550kN, long creepage distance of 620mm, and the unique self-shattering upon zero-value maintenance-free characteristic of glass insulators, has become the core choice for ±800kV UHV DC transmission lines. It is providing reliable insulation protection for major national energy strategic projects such as the "West-to-East Power Transmission" initiative.
- Its long creepage distance of 620mm makes it particularly suitable for use in severely polluted, coastal, and industrial areas, effectively preventing the occurrence of "pollution flashover" accidents.
- Brand: QOCI
- Catalog ID: UG550B240/620N
- Type: Standard Type
- Material: Glass Dielectric ， Forged steel cap & pin
- Place of Origin: Jiangxi
Product Information
IEC Stand :U550B
| U | Disc Suspension Insulator |
| 550 | Mechanical failing load of 550kN |
| B | Ball And Socket Type |
Mechanical values
|
Mechanical failing load |
550（530）kN |
|
Mechanical residual strength |
275（265）kN |
Electrical Values
|
Dry power frequency withstand voltage |
70kV |
|
Wet power frequency withstand voltage |
55kV |
|
Dry lightning impulse withstand voltage |
140kV |
|
Power frequency puncture voltage |
130kV |
Radio-influence Voltage
|
RIV test voltage rms to ground Maximum RIV at 1000 kHz: |
10 kV 50 μV |
|
Corona visual lest P/C |
18/22 KV |
|
Power frequency electric arc voltage |
0.12s/20kA |
Packing information
|
Net weight |
21.5kg |
|
Carton Quantity: |
2/3pcs |
Industry Standard(s)
Manufactured accordance with IEC60383-1:2023，MOD / GB/T1001.1
Contact Us
We are committed to providing you with the highest quality products and excellent services. If you have any questions or need assistance with our products, please feel free to contact us and we will be happy to serve you.
Due to the time difference, we may not be able to reply to you immediately.We will reply to your email as soon as we start working.