Ceramic Insulator Tubes are used in vacuum interrupters for medium voltage switch gears (approx. 6kV to 80kV). It is a specialized Alumina material with high insulation resistance, good mechanical strength, and so on.
The Mo-Mn metallization with nickel plating allows customers to assemble hermetically sealed products and In-house electrode brazing capability.
Our factory has dedicated production lines, capable of high quality and mass production.
Any specific requirements, pls feel free to contact us.
Vacuum Interrupter Ceramic Tube
Material Properties:
| PROPERTY | UNITS | 95%Al2O3 | 99%Al2O3 |
| Dielectric Strength | kv/mm | 18 | 20 |
| Dielectric Loss | 25°C @ 1MHz | 0.0004 | 0.0002 |
| Volume Resistivity | 25°C ohm-cm | >1014 | >1014 |
| Bulk Density | G/cm3 | 3.8 | 3.9 |
| Thermal Conductivity | W/mk | 24 | 28 |
Applications:
- Vacuum interrupters of switchgear, medium voltage range (approx. 6KV to 80KV)
- Vacuum switch
- Vacuum relay
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