12kv outdoor voltage divider insulator design-九游会ag

12kv outdoor voltage divider insulator design
customer requirements:

1, rated voltage: 12kv ac;
2, nominal capacity: 1720pf;
3, the use of the environment: outdoor, high-voltage hanging net, directly to the ground;
4, electrical performance: pressure 42kv two minutes, 75kv lightning impact;
5, temperature characteristics: -40 degrees to 70 degrees, the temperature change rate is small;
6, creepage distance: design safety distance;

beautiful design:

1, using a dielectric medium with a dielectric constant of 320 as a capacitor material;
2, the capacitor voltage is designed to be 12kv rated voltage;
3, the capacity is set to 1720pf;
4. in the range of -50 degrees to 125 degrees, the tc change rate of the capacitor is less than 5%;
5, the outer shell must be covered with umbrella skirt epoxy;

design:

the appearance of the capacitor adopts the existing arrester mold, the shed design, and the epoxy resin package; the upper and lower ends are copper electrodes, as shown in the above figure.

factory test:

1, withstand voltage test: 42kv for two minutes;
2, pd test: put in the 18kv ac test station, less than 3pc;
3, high and low temperature test: at -40 degrees or 85 degrees constant temperature 6h, the shell does not appear cracking phenomenon;