70B 100B 120B Standard Disk Suspension Type Glass Insulator
Product 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.
Technical Date
| Type |
Diameter(mm) |
Height(mm) |
Creepage Distance |
SML(kN) |
Mechanical Routine Test |
Socket coupling(mm) |
Wet Power Frequency Withstand Voltage(kV) |
| 255 |
146 |
320 |
120 |
60 |
16 |
45 |
| U120B |
Dry lightning impulse withstand voltage(kV) |
Impulse Puncture Voltage(P.U) |
Power Frequency Puncture Voltage(kV) |
Radio Influence Voltage(μv) |
Corona visual test(kV) |
Power frequency electric arc voltage(kA) |
Net weight per unit(kg) |
| 100 |
2.8 |
130 |
50 |
18/22 |
0.12s/20kA |
4 |
Certifications
Company Profile
Factory Direct
Wuhan Line Power transmission and transformation co., LTD. Mainly produces and sells composite insulators and accessories. Is a collection of manufacturing, processing, distribution and other business as one of the manufacturing company. The company is based on the r&d, manufacturing and sales of the complete set of composite insulator equipment.With excellent product quality, reasonable price and good service for the enterprise, won the majority of customers praise and trust.
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