Lightning arrester with thermal excitation dropper

A lightning protection device and thermal excitation technology, which is applied in the direction of thermal relays, relays, overvoltage protection resistors, etc., can solve the problems of detonating droppers, etc., and achieve the effects of low cost, simple structure, good economic and social benefits

Inactive Publication Date: 2007-12-05
POWER MANAGEMENT CORP OF SHENGLI PETROLEUM ADMINISTATION BUREAU OF CHINA PETROCHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, new problems are caused by this. Whenever a lightning strike voltage occurs, the s

Method used

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  • Lightning arrester with thermal excitation dropper

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Embodiment Construction

[0013] An embodiment is illustrated in conjunction with the accompanying drawings:

[0014] In Figure 1, 1 is the arrester, 2 is the lower connector of the arrester, 3 is the upper connector of the thermal actuator, 4 is the normally open contact, 5 is the shell of the thermal actuator, and 6 is the lower connector of the thermal actuator , 7 is the upper connector of the shedding device, 8 is the shedding device, 9 is the ground wire nut, 10 is the grounding screw of the shedding device, 11 is the bimetal sheet and the outer winding heating wire, 12 is the ground wire connecting metal block, 13 is the flat wire.

[0015] As shown in Figure 1, the lightning arrester with a heat-activated shedding device includes three parts: the lightning arrester 1, the heat activator 5 and the shedding device 8. placed within the shell. The lower end of the lightning arrester 1 is connected with the upper end of the thermal trigger 5 , and the lower end of the thermal trigger 5 is connecte...

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PUM

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Abstract

The invention relates to a lightning conductor which carries the thermal excitation type abscission implement, belongs to the arrester and its abscission implement domain. It is composed of the arrester, the thermal exciter and abscission implement. The inferior extremity of the arrester connects with the superior extremity of the thermal exciter; the inferior extremity of thermal exciter connects with the superior extremity of the abscission implement. The arrester connects with the out-circled electric heating wire of normally open contact and the bimetallic strip in the thermal exciter; the normally open contact connects with the abscission implement, the inferior extremity of the abscission implement and the inferior extremity of the electric heating wire both connect with the earth line. The thermal exciter is composed of outer covering, superior connecting fitting, inferior connecting fitting, earth line connection bullion, strip conductor, the normally open contact, bimetallic strip and out-circled electric heating wire. The normally open contact, bimetallic strip and out-circled electric heating wire all install in the thermal excitation crustaceous atrium. When the electrical network has happened the thunder stroke voltage, the thunder current through the electric heating wire joins to the ground, no longer induces the abscission implement detonation. Once the arrester had short circuit damaged, the short-circuit current caused the heating wire to detonate the abscission implement, prevented the electrical network high pressure earth accident.

Description

(1) Technical field [0001] The invention relates to a lightning arrester and its shedding device, and also to a piezoresistor and a thermal relay, in particular to a lightning arrester with a heat-activated shedding device. (2) Background technology [0002] The commonly used surge arresters for 6-10KV transmission lines are designed based on the principle of varistors. Its upper end is connected to the three-phase high-voltage electricity of the angle connection method, and its lower end is connected to the ground wire. In non-lightning weather, the varistor resistance of the arrester is extremely large, and it is in an open circuit state; in thunderstorm weather, if an instantaneous lightning strike voltage occurs on the power grid, the varistor resistance of the arrester is zero, and the instantaneous lightning current enters the ground at an extremely fast speed , so as to protect the grid equipment from lightning strikes. However, if the arrester is broken, not only w...

Claims

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Application Information

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IPC IPC(8): H01C7/12H01H61/00
Inventor 胡金海高志鹏勾松波刘志明宋中惠翟化仁张玉奎季本清
Owner POWER MANAGEMENT CORP OF SHENGLI PETROLEUM ADMINISTATION BUREAU OF CHINA PETROCHEM CORP
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