Capacitors shall be capable of withstanding the sine wave ac voltage test as specified below applied to the terminals (connected together) and the enclosure at a frequency as close as possible to the rated frequency.
Twice the rated voltage + 1000V, but not less than 2000 V. Duration of the test: 60 s during type test and at least 1 s during factory test If the capacitor case is of insulating material, the test voltage shall be applied during the type test (If any) between the terminal and the metal frame, or between the terminal and the metal foil tightly encasing the surface of the case. During the factory test, the test voltage shall be applied between the terminal and the metal part Words).
If the housing is entirely made of insulating material, you do not have to make a factory test.
During the test, there should be no dielectric breakdown or flashover.
Characteristics of centrifugal casting of alloy furnace tube:
1, depending on the directional solidification from the outside of the contact with the mold, the quality of extremely dense without casting shrinkage cavity and foreign body clamping is obtained.
2. Central control cylindrical products with uniform thickness can be obtained due to centrifugal force.
3. As there are no factors affecting solidification and shrinkage, products with low casting stress can be obtained.
4. Due to the dense structure and developed columnar crystal of centrifugal casting, it has good oxidation resistance at high temperature, anti-carburization and high temperature strength.
5. It can work continuously for a long time under the temperature of 800-12000c and pressure of 3-4mpa.
Our company can produce various specifications of alloy furnace tubes (ø56-ø1200mm) according to the needs of customers, and the length of the tube section is 3-5m.
I Type Radiant Tube,Corrosion Resistant Radiant Tube,Heat Treatment Radiant Tube,I Shape Electric Radiant Tube
Jiangsu Huaye Special Steel Manufacturing Co., Ltd. , https://www.huayecasting.com