CN203164282U - Leakage current tester capable of being simultaneously applicable to medical and civil standard - Google Patents

Leakage current tester capable of being simultaneously applicable to medical and civil standard Download PDF

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Publication number
CN203164282U
CN203164282U CN 201320032965 CN201320032965U CN203164282U CN 203164282 U CN203164282 U CN 203164282U CN 201320032965 CN201320032965 CN 201320032965 CN 201320032965 U CN201320032965 U CN 201320032965U CN 203164282 U CN203164282 U CN 203164282U
Authority
CN
China
Prior art keywords
leakage current
medical
impedance simulation
simulation network
impedance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320032965
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Chinese (zh)
Inventor
李求龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING MINSHENG ELECTRONIC INSTRUMENTS CO Ltd
Original Assignee
NANJING MINSHENG ELECTRONIC INSTRUMENTS CO Ltd
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Publication date
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Priority to CN 201320032965 priority Critical patent/CN203164282U/en
Application granted granted Critical
Publication of CN203164282U publication Critical patent/CN203164282U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a leakage current tester capable of being simultaneously applicable to medical and civil standards. The leakage current tester comprises a power supply module and an analysis determination module, wherein the power supply module is provided with a power-supply output terminal for connecting with a to-be-determined electric appliance; the analysis determination module is provided with a test-current input terminal, an MD impedance simulation network and a test circuit unit, wherein the test-current input terminal and the MD impedance simulation network are used for connecting with the to-be-determined electric appliance, the test circuit unit is used for analyzing and calculating the leakage current of the to-be-determined electric appliance by detecting voltage applied to two ends of an MD, the MD impedance simulation network consists of two MD impedance simulation networks mutually connected in parallel, and the two MD impedance simulation networks are respectively corresponding to the medical and civil standards and respectively connected with control switches in series. Switching of different input-impedance standards can be realized by switching of the two control switches, so that one machine can be applicable to leakage-current measurement requirements of the civil and medical two standards. The leakage current tester is convenient for users and cost is reduced.

Description

A kind ofly can be suitable for medical and leakage current tester civil standards simultaneously
Technical field
The utility model relates to electric device line detection technique field, particularly a kind ofly can be suitable for medical and leakage current tester civil standards simultaneously.
Background technology
The leakage current testing of existing single-phase electrical equipment is to realize by circuit as shown in Figure 1, and test is carried out any utmost point (being live wire or zero line) and easily the touching between the metal parts of electrical equipment of power supply.
During test, attracting electric relay JK2 is added to civil power on the automatic coupling voltage regulator B1, boosts through pressure regulator B1 and exports to equipment under test D by the inferior utmost point of isolating transformer B2 again to the elementary of isolating transformer B2.Suction by relay J K1 in the test process with close, the switch branch is clipped to 1,2 position measurement leakage current, gets bigger value as the leakage current values of this electrical appliance in two leakage current values.The user generally by the standard-required of electrical equipment, sets leakage current value, surpasses setting value as long as detect leakage current value in the test process, and instrument will cut off output voltage and send sound and light alarm simultaneously.
But because medical and civilian industry has different standards for the simulated impedance of importing human body, also there is not the leakage current tester that can satisfy medical and civilian industry test request simultaneously at present.
Summary of the invention
The purpose of this utility model is the defective at prior art, provides a kind of and can be suitable for medical simultaneously and leakage current tester civil standards, and its testing standard can set up on their own, and then satisfies corresponding test request.
For achieving the above object, the technical scheme that the utility model is taked is: a kind ofly can be suitable for medical and leakage current tester civil standards simultaneously, comprise power supply supplying module and assay determination module; Be provided with in the power supply supplying module for connecting by the power output end of electricity measurer, be provided with in the assay determination module for connecting by the measuring current input end of electricity measurer, MD impedance simulation network, and by detecting the mensuration circuit unit of the tested electrical leakage stream of MD both end voltage analytical calculation; It is characterized in that,
Described MD impedance simulation network is by two parallel with one another compositions of MD impedance simulation network of corresponding civilian and medical standard respectively, and each MD impedance simulation network is connected in series gauge tap respectively.
The MD impedance simulation network is existing product, it generally seals in the measured circuit when using, measure the voltage effective value at MD two ends then, again by calculating the effective value that obtains leakage current, each MD impedance simulation network described in the utility model is an end ground connection all, the other end connects the measuring current input end simultaneously and measures the input end of circuit unit, and the voltage of TV current input terminal namely is equivalent to the voltage at MD two ends.
Further, but the gauge tap of two MD of serial connection can be arranged at respectively on the operation interface of leakage current tester in the utility model, and the user is switched by the closure of two switches can realize the switching of civilian and medical standard, thereby tests accordingly.
The beneficial effects of the utility model are that the machine of having realized is suitable for civilian and medical two kinds of various criterions simultaneously to the testing requirement of leakage current, for the user has brought convenience, has also reduced cost.
Description of drawings
Figure 1 shows that the leakage current tester circuit theory synoptic diagram of prior art;
Figure 2 shows that circuit theory synoptic diagram of the present utility model.
Embodiment
For content of the present utility model is become apparent more, be described further below in conjunction with the drawings and specific embodiments.
In the leakage current tester shown in Fig. 1, CPU only can carry out the calculating of leakage current according to the corresponding standard of a kind of MD impedance simulation network, and then shows and warning; Then can not be applicable to civilian and medical two kinds of various criterions simultaneously.
Among Fig. 2, leakage current tester of the present utility model, its same power supply supplying module and assay determination module of being formed by AC power, JK2, B1, B2 that comprise with prior art; Be provided with in the power supply supplying module for connecting by power output end A and the C of electricity measurer D, be provided with in the assay determination module for connecting by measuring current input end B, the MD impedance simulation network of electricity measurer, and by detecting the mensuration circuit unit of the tested electrical leakage stream of MD both end voltage analytical calculation;
But MD impedance simulation network described in the utility model is by two respectively parallel with one another composition of MD impedance simulation network of corresponding civilian and medical standard, i.e. MD1 and MD2; Each MD impedance simulation network is connected in series gauge tap respectively, i.e. K1 and K2.The MD impedance simulation network generally seals in the measured circuit when using, measure the voltage effective value at MD two ends then, again by calculating the effective value that obtains leakage current, each MD impedance simulation network described in the utility model is an end ground connection all, the other end connects the measuring current input end simultaneously and measures the input end of circuit unit, and the voltage of TV current input terminal namely is equivalent to the voltage at MD two ends.
But the gauge tap of two MD of above-mentioned serial connection can be arranged at respectively on the operation interface of leakage current tester, and the user is switched by the closure of two switches can realize the switching of civilian and medical standard, thereby tests accordingly.Measure voltage signal that circuit unit records through comparer ICB, AC/DC conversion, A/D conversion back to CPU, CPU calculates the signal that obtains, and obtains leakage current values, and then demonstration or send alerting signal.The user can reset to CPU by the test reset port, to stop the output of reporting to the police, in order to testing again.
The utility model has realized that a machine is suitable for civilian and medical two kinds of various criterions simultaneously to the testing requirement of leakage current, for the user has brought convenience, has also reduced cost.
Concrete case study on implementation only is preferable case study on implementation of the present utility model described in the utility model, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be as technology category of the present utility model.

Claims (2)

1. one kind can be suitable for medical and leakage current tester civil standards simultaneously, comprises power supply supplying module and assay determination module; Be provided with in the power supply supplying module for connecting by the power output end of electricity measurer, be provided with in the assay determination module for connecting by the measuring current input end of electricity measurer, MD impedance simulation network, and by detecting the mensuration circuit unit of the tested electrical leakage stream of MD both end voltage analytical calculation; It is characterized in that,
Described MD impedance simulation network is by two parallel with one another compositions of MD impedance simulation network of corresponding civilian and medical standard respectively, and each MD impedance simulation network is connected in series gauge tap respectively.
2. according to claim 1ly can be suitable for medical and leakage current tester civil standards simultaneously, it is characterized in that described each MD impedance simulation network is an end ground connection all, the other end connects the measuring current input end simultaneously and measures the input end of circuit unit.
CN 201320032965 2013-01-18 2013-01-18 Leakage current tester capable of being simultaneously applicable to medical and civil standard Expired - Fee Related CN203164282U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320032965 CN203164282U (en) 2013-01-18 2013-01-18 Leakage current tester capable of being simultaneously applicable to medical and civil standard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320032965 CN203164282U (en) 2013-01-18 2013-01-18 Leakage current tester capable of being simultaneously applicable to medical and civil standard

Publications (1)

Publication Number Publication Date
CN203164282U true CN203164282U (en) 2013-08-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320032965 Expired - Fee Related CN203164282U (en) 2013-01-18 2013-01-18 Leakage current tester capable of being simultaneously applicable to medical and civil standard

Country Status (1)

Country Link
CN (1) CN203164282U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104749484A (en) * 2015-04-22 2015-07-01 国家电网公司 Electric-leakage monitoring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104749484A (en) * 2015-04-22 2015-07-01 国家电网公司 Electric-leakage monitoring device
CN104749484B (en) * 2015-04-22 2017-06-06 国家电网公司 Leakage monitoring device

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130828

Termination date: 20180118

CF01 Termination of patent right due to non-payment of annual fee