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Three-phase combined overvoltage protector

An overvoltage and protector technology is applied to emergency protection circuit devices, emergency protection circuit devices, and electrical components for limiting overcurrent/overvoltage. Eliminate the impact and save energy

Inactive Publication Date: 2017-05-10
合肥普望电子有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a three-phase combined overvoltage protector, which can better protect equipment and avoid problems that cannot be protected due to problems with zinc oxide or discharge gaps. situation happened

Method used

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  • Three-phase combined overvoltage protector

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Embodiment Construction

[0009] The present invention will be further described below in conjunction with the accompanying drawings.

[0010] like figure 1 As shown, it includes the first disconnector N1, the second disconnector N2 and the third disconnector N3. One end of the first disconnector N1, the second disconnector N2 and the third disconnector N3 are respectively connected to A, B, The three-phase ends of C are connected, and the other ends of the first disconnector N1, the second disconnector N2 and the third disconnector N3 respectively pass through the first zinc oxide valve plate Y1, the second zinc oxide valve plate Y2 and the third zinc oxide valve plate Y3 is connected to the discharge gap assembly, the other end of the discharge gap assembly is grounded through the fourth zinc oxide valve piece Y4, the first zinc oxide valve piece Y1, the second zinc oxide valve piece Y2, the third zinc oxide valve piece Y3 and the fourth zinc oxide valve piece Y3 Both ends of the zinc valve sheet Y4...

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PUM

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Abstract

The invention provides a three-phase combined overvoltage protector, which comprises a first disconnector, a second disconnector and a third disconnector, wherein one end of the first disconnector, one end of the second disconnector and one end of the third disconnector are connected with three-phase ends A, B and C of a protection device respectively, the other ends of the first disconnector, the second disconnector and the third disconnector are connected with a discharge gap assembly through a first zinc oxide varistror, a second zinc oxide varistror and a third zinc oxide varistror respectively, and the other end of the discharge gap assembly is grounded through a fourth zinc oxide varistror; and two ends of each of the first zinc oxide varistror, the second zinc oxide varistror, the third zinc oxide varistror and the fourth zinc oxide varistror are connected with one capacitor in parallel. The three-phase combined overvoltage protector is simple in structure, reasonable in arrangement, good in performance, stable in operation voltage and good in energy-saving effect, and can be automatically connected to a power grid in an autocontrol manner.

Description

technical field [0001] The invention relates to an overvoltage protection device for electrical equipment in a power system, in particular to a three-phase combined overvoltage protector. Background technique [0002] At present, because the insulation of various high-voltage electrical equipment, such as transformers, switches, and motors, has certain limits, in order to avoid the harm of atmospheric overvoltage and operating overvoltage to these equipment, people mostly use discharge gaps and zinc oxide valves. Surge arresters connected in series, such as the Chinese invention patent with the authorized announcement number CN 2144888Y discloses a three-phase combined overvoltage protector, which adopts the setting of the midpoint M, and connects four radially from the midpoint M with discharge gaps and oxidation The zinc valve plates are connected in series to form a protective branch circuit, and the other ends of the four protective branch circuits are respectively conne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/06
CPCH02H9/06
Inventor 顾孙珺
Owner 合肥普望电子有限责任公司
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