CN102621415A - Electrical fast transient (EFT) disturbance experimental system - Google Patents
Electrical fast transient (EFT) disturbance experimental system Download PDFInfo
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- CN102621415A CN102621415A CN2012100809252A CN201210080925A CN102621415A CN 102621415 A CN102621415 A CN 102621415A CN 2012100809252 A CN2012100809252 A CN 2012100809252A CN 201210080925 A CN201210080925 A CN 201210080925A CN 102621415 A CN102621415 A CN 102621415A
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Abstract
The invention discloses an electrical fast transient (EFT) disturbance experimental system. The experimental system comprises a rectangular reference grounding plate, an insulation desk which is 0.8m high and is arranged on the reference grounding plate, a signal generator, a coupling/ decoupling network and equipment to be tested, wherein the signal generator, the coupling/ decoupling network and the equipment to be tested are arranged on the insulation desk and are connected in sequence, the lengths of a plurality of signal cables of the coupling/ decoupling network and the equipment to be tested are all less than one meter; the desktop of the insulation desk is a rectangle, the reference grounding plate is an aluminium plate or a copper plate and is connected with ground, and each side of the desktop is 0.1 meter longer each side of the insulation desk; and the grounding cable of the equipment to be tested is connected with the reference grounding plate. The experimental system provided by the invention can exactly verify disturbance resistance of the equipment to be tested to various transient disturbance from a switching transient process.
Description
Technical field
The present invention relates to a kind of electrical fast transient (eft) harassing and wrecking experimental system.
Background technology
Electrical fast transient (eft) (EFT, Electrical Fast Transient/burst) mainly causes that this transient state harassing and wrecking are made up of a large amount of pulses owing to cut off inductive load, relay contact shake, high-voltage switch gear switching etc.The mechanical switch contact separately begins spark discharge when the voltage between the contact surpasses insulation voltage, voltage descends rapidly between the contact, rise again then, since the contact spacing increase, the also corresponding increase of voltage of flashing discharge once more, and the like.When distance arrives to a certain degree greatly, glow discharge takes place between the contact, the energy consumption in the inductance is fallen.In order to verify Electrical and Electronic equipment, can do electrical fast transient (eft) harassing and wrecking experiment to equipment to immunity to interference such as all kinds transition harassing and wrecking that come adaptive switched transient process.Therefore, developing a system that is used for doing electrical fast transient (eft) harassing and wrecking experiment, is the problem that needs solve.
Summary of the invention
The objective of the invention is to overcome the defective of prior art and a kind of electrical fast transient (eft) harassing and wrecking experimental system is provided; Can do electrical fast transient (eft) harassing and wrecking experiment to tested device, verify that exactly tested device is to the immunity to interference such as all kinds transition harassing and wrecking that come adaptive switched transient process.
The technical scheme that realizes above-mentioned purpose is:
A kind of electrical fast transient (eft) harassing and wrecking experimental system; Said experimental system comprises the reference ground plate of rectangle, highly is 0.8 meter and places with reference to the insulation table on the ground plate, signal generator, coupling/decoupling network and the tested device (EUT) that place insulation table to go up and connect successively, wherein:
The length of some signal cables that connects said coupling/decoupling network and tested device is all less than 1 meter;
The desktop of said insulation table is rectangular;
Said is aluminium sheet or copper coin with reference to ground plate, joins with ground, and its each length of side is all above 0.1 meter of each length of side of said insulation table;
The earthing cable of said tested device connects said with reference to ground plate.
Above-mentioned a kind of electrical fast transient (eft) harassing and wrecking experimental system, wherein, said thickness with reference to ground plate is greater than 0.25 millimeter.
Above-mentioned a kind of electrical fast transient (eft) harassing and wrecking experimental system, wherein, said thickness with reference to ground plate is 0.3 millimeter.
The invention has the beneficial effects as follows: the present invention can do electrical fast transient (eft) harassing and wrecking experiment to tested device, verifies that exactly tested device is to the immunity to interference such as all kinds transition harassing and wrecking that come adaptive switched transient process.Simultaneously, the present invention is simple in structure, is easy to realize.
Description of drawings
Fig. 1 is the system schematic of electrical fast transient (eft) harassing and wrecking experimental system of the present invention.
Embodiment
To combine accompanying drawing that the present invention is described further below.
See also Fig. 1; Electrical fast transient (eft) harassing and wrecking experimental system of the present invention; Said experimental system comprises the reference ground plate 1 of rectangle, highly is 0.8 meter and places with reference to the insulation table 2 on the ground plate, place on the insulation table 2 and the signal generator 3, coupling/decoupling network 4 and the tested device 5 that connect successively, wherein:
The length of some signal cables of connection coupling/decoupling network 4 and tested device 5 is all less than 1 meter;
The desktop of insulation table 2 is rectangular, and reference ground plate 1 each limit of each limit of desktop and rectangle is corresponding;
With reference to ground plate 1 is aluminium sheet or copper coin, and its thickness is greater than 0.25 millimeter, and in the present embodiment, thickness is 0.3 millimeter; Join (promptly on the ground) with reference to ground plate 1 and ground, its each length of side all surpasses 0.1 meter of each length of side of insulation 2;
The earthing cable of tested device 5 connects with reference to ground plate 1;
Among the present invention, it is to be applied in all input and output loops of tested device 5 with the common mode mode that electrical fast transient (eft) is harassed, as shown in Figure 1.When experiment, fashionable when adding from power lead, tested device 5 requires only on a signal cable, to add the EFT signal at every turn, but not on every signal cable, adds simultaneously, adopts coupling/decoupling network 4 to apply the EFT signal.Require each root signal cable under a kind of trial voltage polarity, to do three times, each one minute, the centre was separated by one minute.After a kind of polarity is finished, change and do another polarity.After a signal cable is finished, change and do another root signal cable.
The present invention is applied in the equipment of different occasions, and the test class of making electric fast-pulse transition crowd immunity to interference is that different specific requirement is as shown in table 1:
Table 1
The harsh grade that experiment will apply depends on the condition that equipment uses:
1 grade: the better protect environment, surge voltage is no more than 500V, like the pulpit in factory or the power station.
2 grades: the protection environment is poorer slightly than 1 grade, and surge voltage is no more than 1kV, as does not have strongly disturbing factory.
3 grades: as the electromagnetic disturbance environment of property, no special mounting requirement, the surge amplitude is no more than 2kV, like the cable system of common installation, payable workplace and electric substation etc.
4 grades: receive the environment of serious harassing and wrecking, surge voltage can reach 4kV, like civilian pole line, does not add the high voltage substation of protection etc.
Above embodiment only supplies to explain the present invention's usefulness; But not limitation of the present invention; The technician in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification; Therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited each claim.
Claims (3)
1. an electrical fast transient (eft) is harassed experimental system; It is characterized in that; Said experimental system comprises the reference ground plate of rectangle, highly is 0.8 meter and places with reference to the insulation table on the ground plate, the signal generator, coupling/decoupling network and the tested device that place insulation table to go up and connect successively, wherein:
The length of some signal cables that connects said coupling/decoupling network and tested device is all less than 1 meter;
The desktop of said insulation table is rectangular;
Said is aluminium sheet or copper coin with reference to ground plate, joins with ground, and its each length of side is all above 0.1 meter of each length of side of said insulation table;
The earthing cable of said tested device connects said with reference to ground plate.
2. a kind of electrical fast transient (eft) harassing and wrecking experimental system according to claim 1 is characterized in that, said thickness with reference to ground plate is greater than 0.25 millimeter.
3. a kind of electrical fast transient (eft) harassing and wrecking experimental system according to claim 2 is characterized in that said thickness with reference to ground plate is 0.3 millimeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100809252A CN102621415A (en) | 2012-03-23 | 2012-03-23 | Electrical fast transient (EFT) disturbance experimental system |
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| CN2012100809252A CN102621415A (en) | 2012-03-23 | 2012-03-23 | Electrical fast transient (EFT) disturbance experimental system |
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| CN2012100809252A Pending CN102621415A (en) | 2012-03-23 | 2012-03-23 | Electrical fast transient (EFT) disturbance experimental system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965141A (en) * | 2015-07-03 | 2015-10-07 | 江苏益邦电力科技有限公司 | Floating electronic equipment electric rapid transient pulse group protection method |
| CN106970319A (en) * | 2017-04-14 | 2017-07-21 | 中国航空综合技术研究所 | It is a kind of to tremble the disconnected measuring method for trembling the time of closing on relay |
| CN108267616A (en) * | 2016-12-30 | 2018-07-10 | 上海优立检测技术股份有限公司 | A kind of insulation support plate for electromagnetic compatibility test |
| CN109188152A (en) * | 2018-10-15 | 2019-01-11 | 青岛四方庞巴迪铁路运输设备有限公司 | Method for detecting common-mode disturbance of grounding circuit |
| CN109444599A (en) * | 2018-12-06 | 2019-03-08 | 郑州云海信息技术有限公司 | A kind of system and method for eliminating electrical fast transient (eft) interference |
| CN110196363A (en) * | 2019-05-27 | 2019-09-03 | 杭州电子科技大学 | Industrial robot servo-driver detection method based on electrical fast transient (eft) |
| CN111487489A (en) * | 2020-03-26 | 2020-08-04 | 珠海格力电器股份有限公司 | Method and device for evaluating anti-interference degree of chip |
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| CN202533523U (en) * | 2012-03-23 | 2012-11-14 | 上海市电力公司 | Electric rapid transient pulse train disturbance experiment system |
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| CN202533523U (en) * | 2012-03-23 | 2012-11-14 | 上海市电力公司 | Electric rapid transient pulse train disturbance experiment system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965141A (en) * | 2015-07-03 | 2015-10-07 | 江苏益邦电力科技有限公司 | Floating electronic equipment electric rapid transient pulse group protection method |
| CN108267616A (en) * | 2016-12-30 | 2018-07-10 | 上海优立检测技术股份有限公司 | A kind of insulation support plate for electromagnetic compatibility test |
| CN106970319A (en) * | 2017-04-14 | 2017-07-21 | 中国航空综合技术研究所 | It is a kind of to tremble the disconnected measuring method for trembling the time of closing on relay |
| CN106970319B (en) * | 2017-04-14 | 2020-07-03 | 中国航空综合技术研究所 | Method for measuring shaking-off and shaking-off time of relay |
| CN109188152A (en) * | 2018-10-15 | 2019-01-11 | 青岛四方庞巴迪铁路运输设备有限公司 | Method for detecting common-mode disturbance of grounding circuit |
| CN109188152B (en) * | 2018-10-15 | 2021-02-12 | 青岛四方庞巴迪铁路运输设备有限公司 | Method for detecting common-mode disturbance of grounding circuit |
| CN109444599A (en) * | 2018-12-06 | 2019-03-08 | 郑州云海信息技术有限公司 | A kind of system and method for eliminating electrical fast transient (eft) interference |
| CN109444599B (en) * | 2018-12-06 | 2024-08-20 | 郑州云海信息技术有限公司 | System and method for eliminating electric fast transient pulse group interference |
| CN110196363A (en) * | 2019-05-27 | 2019-09-03 | 杭州电子科技大学 | Industrial robot servo-driver detection method based on electrical fast transient (eft) |
| CN110196363B (en) * | 2019-05-27 | 2021-03-02 | 杭州电子科技大学 | Industrial robot servo driver detection method based on electric fast transient pulse group |
| CN111487489A (en) * | 2020-03-26 | 2020-08-04 | 珠海格力电器股份有限公司 | Method and device for evaluating anti-interference degree of chip |
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Owner name: STATE ELECTRIC NET CROP. Effective date: 20121011 |
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Effective date of registration: 20121011 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant after: Shanghai Electric Power Corporation Applicant after: State Grid Corporation of China Address before: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant before: Shanghai Electric Power Corporation |
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Application publication date: 20120801 |