Over-voltage protection device
A protection device, overvoltage technology, applied in overvoltage protection resistors, varistors and other directions, can solve problems such as virtual welding, affecting the strength of solder connection, increasing the risk of electric power and arcing in the welding part, etc.
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[0025] Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0026] figure 1A schematic diagram showing the appearance of the SPD according to the embodiment of the present invention. As shown in the figure, as a compact model, the SPD of the embodiment of the present invention is roughly in the shape of a cuboid, the housing cover 12 covers the parts of the SPD, and the cover plate 11 is a transparent window through which the Observe the internal SPD status. It should be noted that the SPD of the embodiment of the present invention is not limited to the illustrated cuboid shape.
[0027] refer to figure 2 , to describe the main components and working principle of the SPD according to the embodiment of the present invention. Such as figure 1 As shown, the overvoltage protection device includes: a casing 3 ; an MOV 5 inside the casing 3 , the MOV is a metal oxide varistor; a static electrode 15 connected to the MOV; an...
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