Toughened Glass Disc Insulator U100B 255
Products Description
Each unit is constructed of a ceramic or glass disc with a metal cap and pin cemented to opposite sides. To make defective units obvious, glass units are designed so that an overvoltage causes a puncture arc through the glass instead of a flashover. The glass is heat-treated so it shatters, making the damaged unit visible. However the mechanical strength of the unit is unchanged, so the insulator string stays together.
Toughened glass beads are products used for insulation and suspension of conductors in high-voltage and ultra-high-voltage AC and DC transmission lines [1]. They were initially mainly applied to utility poles, and later gradually evolved into key components of high-voltage transmission lines. Their disc-shaped design significantly increases the creepage distance. They are composed of an iron cap, toughened glass pieces, and steel feet, combined through cement adhesives. The cylindrical head design features a small head size, light weight, and high mechanical strength, which is 1-2 times higher than that of porcelain insulators.
Electrical Parameters
| Type | U100B |
| Diameter(mm) | 255 |
| Height(mm) | 146 |
| Creepage Distance | 320 |
| SML(kN) | 100 |
| Mechanical Routine Test | 50 |
| Socket coupling(mm) | 16 |
| Wet Power Frequency Withstand Voltage(kV) | 40 |
| Dry lightning impulse withstand voltage(kV) | 100 |
| Impulse Puncture Voltage(P.U) | 2.8 |
| Power Frequency Puncture Voltage(kV) | 130 |
| Radio Influence Voltage(μv) | 50 |
| Corona visual test(kV) | 18/22 |
| Power frequency electric arc voltage(kA) | 0.12s/20kA |
| Net weight per unit(kg) | 4 |
Why Choose Us
1. As a professional manufacturer of composite insulators, our company, as an important research and production base of the Wuhan Branch of the State Grid Electric Power Research Institute, has always regarded quality as the source of life for the enterprise.
2. More professional consulting services: Our company has dedicated technical personnel responsible for customer service who are available at any time to provide you with technical consultations on products.
3. All products are of superior quality. Our products undergo strict quality control and testing to ensure stable and reliable performance for customers. This is the basic condition for customers to choose us. We welcome customers to visit our factory and inspect the goods at any time.
4. All types of composite insulator products produced by us have passed the certification and appraisal of national professional institutions. The product performance can reach the leading level in China and has been highly praised by customers from multiple industries and the industry. Our products are exported to over 50 countries around the world.
5. Our goal: Strive for excellence, aim for the first-class, and unwaveringly make "WUHAN LINE POWER" larger, better, and stronger, and strive to build a first-class professional production base for composite insulators in China.
FAQ
1. Can customers visit and inspect the factory?
Yes. Factory visits, inspections, and third-party audits are warmly welcomed at any time.
2. Do you provide technical support?
Yes. We have dedicated technical engineers to provide professional technical consultation before, during, and after sales.
3. What is your export experience?
Our products have been exported to more than 50 countries and regions, serving customers in power transmission, distribution, railways, and substations.
4. What is your delivery time?
Standard products can usually be delivered within 1–2 weeks based on available materials. Delivery time for customized products depends on order quantity and technical requirements.
5. Can you provide samples?
Yes. Samples are available for evaluation upon request.
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