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Long-service life and high-reliability high-voltage varistor

A varistor, reliability technology, applied in the direction of varistor, resistor shell/packaging shell/potting, etc., can solve the problem of low-resistance without considering the long-life and high-reliability requirements of computers, and without considering the aging protection of electrical insulation. Voltage requirements and other issues, to achieve the effect of large economic use value, avoid thermal damage, high on-voltage and low residual voltage

Inactive Publication Date: 2017-06-13
CHENSHUO ELECTRONICS JIUJIANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing technology only stacks several zinc oxide varistor chips in series (reaching the rated conduction voltage), and adds a jacket package, which does not consider the long life and high reliability requirements required by computer automatic control, nor does it consider the aging of electrical insulation. Low residual pressure requirements for protection

Method used

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  • Long-service life and high-reliability high-voltage varistor
  • Long-service life and high-reliability high-voltage varistor
  • Long-service life and high-reliability high-voltage varistor

Examples

Experimental program
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Embodiment 1

[0033] Such as figure 1 with figure 2 As shown, this embodiment provides a long-life high-reliability high-voltage varistor, including an insulating sleeve 1, a lower end cover 2, an upper end cover 3, an electrode splint 4, an MOV chip set 5, a lower discharge electrode 6, an insulating Ring piece 7, upper discharge electrode 8, insulating bolt 9,

[0034] In this embodiment, the insulating sleeve 1 is provided with 10 inside,

[0035] In this embodiment, the lower end cover 2 is composed of a lower end cover base 21 and a lower end cover boss 22, and the lower end cover boss 22 is provided with threads 10 and bolt fixing holes 11,

[0036] In this embodiment, the upper end cap 3 is composed of an upper end cap base 31 and an upper end cap boss 32, and the upper end cap boss 32 is provided with threads 10,

[0037] The electrode splint 4 is also provided with bolt fixing holes 11,

[0038] The MOV chipset 5 is composed of at least one MOV chip 51. In this embodiment, the...

Embodiment 2

[0047] The difference between this embodiment and embodiment 1 is:

[0048] Such as image 3 with Figure 4 As shown, in the present embodiment, an insulating board 12, a long connecting piece 13 and a short connecting piece 14 are also included, and the MOV chip set 5 includes a first MOV chip set 51 and a second MOV chip set 52, the first MOV chip set 51 comprises MOV chip 51A, MOV chip 51B and MOV chip 51C, and the second MOV chip group 52 comprises MOV chip 52A, MOV chip 52B and MOV chip 52C, and described first MOV chip group 51 is installed on described lower bottom end cap convex On the stage 22, an insulating plate 12, a lower discharge electrode 6, an insulating ring sheet 7 and an upper discharge electrode 8 are installed in sequence on the first MOV chip group 51, and one end of the short connecting piece 14 is inserted into the first MOV chip Between the group 51 and the insulating plate 12, the other end is inserted between the upper discharge electrode 8 and th...

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Abstract

The invention provides a long-service life and high-reliability high-voltage varistor, which comprises an insulating sleeve, a lower end cover, an upper end cover, an electrode clamping plate, an MOV chip set, an upper discharge electrode, a lower discharge electrode, an insulating ring sheet, and an insulating bolt. According to the present invention, the long-service life and high-reliability high-voltage varistor is provided and has characteristics of long service life, low residual voltage, high reliability and convenient processing; after all components are subjected to cold processing, heating welding is not required so as to avoid the heat damage; and the installation is simple and quick, and the long-service life and high-reliability high-voltage varistor is suitable for mechanization, has low cost, and has great economic use value.

Description

technical field [0001] The invention relates to the technical field of piezoresistor design, in particular to a long-life high-reliability high-voltage piezoresistor. Background technique [0002] Zinc oxide varistors have special nonlinear current-voltage characteristics. Once abnormal conditions occur during use, such as lightning strikes on the power line, strong electromagnetic field interference, frequent power switch actions, and power system failures, the voltage on the line will suddenly increase. The turn-on voltage of the zinc oxide varistor will enter the conduction region. At this time, the current and voltage have a nonlinear relationship, which is generally called the nonlinearity parameter (Nonlinearity Parameter), and its value can reach tens or hundreds. At this time, the impedance of the zinc oxide varistor will drop sharply, only a few ohms, so that the overvoltage will form a surge current to flow out, and the energy of the overvoltage will be released, s...

Claims

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Application Information

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IPC IPC(8): H01C7/10H01C1/02
CPCH01C7/10H01C1/02
Inventor 陈泽同曾清隆
Owner CHENSHUO ELECTRONICS JIUJIANG CO LTD
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