Loading Port:Guangzhou
Payment Terms:TT OR LC
Min Order Qty:100 pc
Supply Capability:10000 pc/month
Product Description
Material: Alumina Ceramic, Al2O3, Aluminium Oxide
Today about 80 percent of power network operators decide in favour of vacuum switching technology. The core component of this switching principle is the vacuum interrupter. Vacuum Interrupters are used for repetitive switching, motor in rush current interruption, fault protection, over current and short circuit protection. They can reliably switch high stress currents robustly without the need for unreliable cooling or ventilation systems.
Product Feture
Long Life & High Reliability
Fast Interrupting Speed
Rapid Dielectric Recovery
Applications
1. Circuit breakers
Vacuum interrupters are used in circuit breakers in the most demanding electrical circuit protection applications to minimize damage caused by electrical overloads or short circuits.
2. Load break switches
Vacuum interrupters are used in load break switches to connect and disconnect electrical load currents providing limited load switch capacity.
3. Reclosers
Vacuum interrupters are used in reclosers to automatically open and close distribution circuits in response to transient overload and fault conditions.
4. Contactors
Vacuum interrupters are used in contactors in demanding applications that require a high number of operations switching a power circuit in electric motors, lighting and heating devices, capacitor banks, and the like.
5. Tap changers
Vacuum interrupters are used in tap changers inside transformers to change the winding connections to deliver the required voltage.
6. Railway circuit breakers
Vacuum interrupters are installed in the circuit breakers on top of this special locomotive to supply electrical energy to railway locomotives' electric drive motors.
Data Sheet
Characteristics | Unit | 95 Al2O3 | 99 Al2O3 | ZrO2 | GPSi3N4 | BN | Glass Ceramic |
Crystal Structure | - | hexagonal | hexagonal | tetragonal | hexagonal | hexagonal | - |
Color | - | white | ivory | white | gray | white | white |
Density | g/cm³ | 3.65 | 3.88 | 5.95 | 3.22 | 2.26 | 2.55 |
Water Absorption | % | 0 | 0 | 0 | 0 | 0.0-1.0 | 0 |
Young's Modulus | Gpa | 280 | 350 | 205 | 295 | 670 | 65 |
Vickers Hardness | Gpa | 14 | 20 | 12 | 18-20 | - | - |
Flexural Strength | Mpa | 280 | 300 | 900 | 650 | 51 | 100 |
Compressive Strength | Mpa | 2000 | 2500 | 2200 | 2200 | 230 | 500 |
Thermal Conductivity | W/(m•K) | 18-25 | 30 | 2.2 | 25 | 20 | 1.70 |
Thermal shock resistance | ΔT(C°) | 220 | 180-200 | 280-350 | 450-650 | >1500 | 25-100 |
Max. Working Temperature | C° | 1500 | 1700 | 850 | 1200 | 960 | 800 |
Volume Resistivity | Ω . cm | >10^15 | >10^14 | >10^12 | >10^14 | 10^13 | 10^16 |
Dielectric Constant | - | 9.50 | 9.80 | 26 | 8.20 | 4.08 | 6.02 |
Dielectric Strength | kV/mm | 16 | 22 | - | 16 | 375 | 40 |
FAQ
We have organized several common questions for our clients, may help you sincerely：
Long Life & High Reliability
Fast Interrupting Speed
Rapid Dielectric Recovery
