1、 Flashing phenomenon of series resonance test device

When the destructive discharge phenomenon occurs on the surface of solid insulation in gas or liquid dielectrics, the flashover phenomenon is called inch flashover. It refers to the phenomenon where the solid insulator, which is the surrounding gas or liquid, is broken down as a dielectric, and the breakdown generates a voltage that discharges along the surface of the insulator along the solid. The voltage is called the voltage at which the flashover discharge occurs.  After flashover occurs between insulators, the voltage between electrodes can quickly drop to zero or close to zero.

The common occurrence is flashover along the dielectric interface. On the surface of the insulator string, the phenomenon of discharge destructive flashover occurs along the surface of the sleeve. The term flashover is used for discharge phenomena in some special educational conditions.

2、 Discharge phenomenon of series resonance test device

Generally refers to the phenomenon of an electric field transitioning from an insulating state to a conductive state in insulating materials. This jump phenomenon may occur in a "through state" between electrodes, where the insulating structural material is completely short circuited and severely damaged. At this time, the voltage between the electrodes can quickly drop to very low or close to zero, which is called destructive discharge; The jump phenomenon may also occur in the local development area between the working electrodes, causing the insulation material to be locally short circuited. The other two parts of the enterprise still have good insulation technology performance, and the voltage between the electrodes can still maintain a certain numerical value. This method is called partial discharge in China.

Destructive discharge and partial discharge can be used for all media and their combinations, but discharge occurs in different media and their combinations with special names. When a liquid or gas medium is subjected to breakdown discharge, it is called spark discharge. If it occurs between electrodes in an air gap and is caused by destructive discharge in an oil gap, more precisely, it should be spark discharge.

When a destructive discharge occurs in a solid dielectric, it is called breakdown. Breakdown, leaving traces in the solid dielectric, solid dielectric loss * insulation performance. When insulating cardboard is punctured, it will leave its own hole on these cardboard.