How to judge whether the port of high voltage switch dynamic characteristic tester is normal?
Select [Test] - [Close test], the high voltage switch dynamic characteristics tester under the LCD screen has 12 real-time status of the fracture display. The screen shows that the fracture channel of the instrument can be detected under this interface. If the fracture input is suspended, it should display "point". If the short circuit to the ground, it should display "close". Therefore, each fracture is short-connected to the ground respectively to observe the status displayed to determine whether the fracture time channel of the high voltage switch dynamic characteristic tester is normal.
High voltage switch also has the manufacturer's definition of rigid points (and) speed, mainly has the following kinds:
1. The average of the whole process is taken after closing and the average speed of 6mm after opening;
2, closing take the whole process average, break take the whole process average speed;
It is defined as the speed definition before (after) adding the program function, but also convenient according to the specific vacuum switch speed test. In addition, when the speed of vacuum switch is tested, the average speed of the whole opening process is very low due to the effect of the buffer mechanism. It is generally defined that the average speed before the buffer mechanism takes effect in the process of vacuum switch opening is the average speed of the whole process, that is, the average speed of the whole process is taken as the average speed of closing, and the average speed of 6mm after opening is taken as the rigid point is closer to the real value. Since the opening distance of 35KV vacuum switch is generally about S=22mm, the value 6 in the speed definition of 10KV vacuum switch can be changed to 10 or 11.
It is defined as the ground cable before bonding (after splitting), and then connect the breaking wire to ensure the safety of the breaking channel.
Field test, because the high voltage switch (especially above 220Kv) between the fracture of the ground is often very high induction voltage, the voltage value is very large, the energy is small, but enough to threaten the safety of the dynamic characteristics of the high voltage switch tester itself. In the instrument, there is a relief loop between the input end of the fracture signal and the ground. First ground wire, the actual priority is connected to the discharge loop, at this time when connecting the fracture signal line, even if the fracture induced a high voltage, can also be discharged to the earth through the discharge loop, so as to ensure the safety of the fracture channel of the high voltage switching dynamic characteristics tester.
Wuhan Xinshengneng Technology Co., Ltd. is a professional manufacturer of electric power testing equipment, producing a series of tester verification devices, complete models, powerful functions, stable performance, a wide range of use. It is favored by many electric power workers.
