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Method and device for assessing protection performance of surge protection device

A technology of surge protection devices and protection performance, which is applied in the direction of measuring devices, instruments, measuring electricity, etc., and can solve the problems of no quantitative evaluation and analysis method, interference surge attenuation, etc.

Inactive Publication Date: 2013-11-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the existing surge protection performance evaluation method is a qualitative evaluation method, that is to say, for the evaluation method, there are only "effective" and "ineffective" points, and there is no quantitative evaluation and analysis method
In other words, for a protective device or circuit, there is no quantitative indicator to characterize how much it can attenuate external interference surges.

Method used

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  • Method and device for assessing protection performance of surge protection device
  • Method and device for assessing protection performance of surge protection device
  • Method and device for assessing protection performance of surge protection device

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] The device for evaluating the protection performance of the surge protection device of the present invention is as follows: figure 1 As shown, it includes: a detection module 11 and a surge protection device 12; wherein,

[0036] The detection module 11 is used to record the surge current before and after passing through the surge protection device 12, and calculate the surge current of the surge protection device 12 according to the set attenuation degree Dec after recording the surge current before and after passing through the surge protection device 12. Attenuation Dec;

[0037] The surge protection device 12 is used for performing surge protection on the protected equipment;

[0038] Here, the surge protection device 12 is the object of the protection performance evaluated in the present invention;

[0039] The Dec is: ...

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Abstract

A method for assessing the protection performance of a surge protection device is disclosed, including: setting the decay degree Dec of the surge protection device as the ratio of the sum C1(Area) of the front surge current of the surge protection device to the sum C2(Area) of the back surge current of the surge protection device; when a surge occurs, recording the surge current flowing through the front and the back of the surge protection device until the surge bleeds (302); calculating the decay degree Dec of the surge protection device (303). An apparatus for assessing the protection performance of the surge protection device is also disclosed. Using the method and the apparatus, the quantitative assessment of the protection performance of the surge protection device can be realized, and thus each surge protection device can be better assessed.

Description

technical field [0001] The invention relates to surge protection performance evaluation technology, in particular to a protection performance evaluation method and device for a surge protection device. Background technique [0002] Lightning is a common weather phenomenon in nature. Equipment, especially outdoor equipment, or equipment with outdoor signal lines, usually need to take surge protection measures on its power port and signal port, such as: adding a surge protection device (SPD, Surge Protection Device) in front of the power supply and signal port ). At present, in general, the evaluation of surge protection performance is carried out through tests, that is, to conduct surge immunity tests. For example, it can be based on "IEC 61000-4-5 Electromagnetic compatibility (EMC)-Part4-5 Testing and measurement techniques-Surge immunity test "standard test, when the surge protection measures can pass the requirements of the relevant standards, the surge protection schem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R19/00
CPCG01R31/3272
Inventor 肖勇军倪冬兵许李园
Owner ZTE CORP