CN102798838A - Pluggable safety junction box for site calibration of electric energy meter - Google Patents
Pluggable safety junction box for site calibration of electric energy meter Download PDFInfo
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- CN102798838A CN102798838A CN2012103131335A CN201210313133A CN102798838A CN 102798838 A CN102798838 A CN 102798838A CN 2012103131335 A CN2012103131335 A CN 2012103131335A CN 201210313133 A CN201210313133 A CN 201210313133A CN 102798838 A CN102798838 A CN 102798838A
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Abstract
The embodiment of the invention discloses a pluggable safety junction box for site calibration of an electric energy meter. The pluggable safety junction box comprises a connector socket and a connector plug, wherein the connector socket comprises a socket shell as well as current transformers, current sampling metal pieces and voltage sampling metal pieces; the current transformers, the current sampling metal pieces and the voltage sampling metal pieces are arranged in a cavity which is formed by the socket shell; the socket shell is provided with current sampling jacks, voltage sampling jacks and insulation jacks; secondary sides of the current transformers are connected with the current sampling metal pieces, and current lines of the electric energy meter to be measured are connected with primary sides of the current transformers; the voltage sampling metal pieces are connected with voltage lines of the electric energy meter to be measured; and the connector plug comprises a handheld part, current sampling plugs, voltage sampling plugs and insulation plugs. According to the pluggable safety junction box for the site calibration of the electric energy meter, the open circuit of a secondary current loop is avoided when the pluggable safety junction box is used; and the potential safety hazard of the traditional junction box is overcome.
Description
Technical field
The present invention relates to the power technology field, relate in particular to a kind of plug formula electric energy meter field verification Safety terminal box.
Background technology
According to DL/T 448-2000 " electric power meter technical management rules " requirement; Tackle operating high-voltage electric-energy meter and carry out the field-checking that actual motion is loaded; Should install and be convenient to the terminal box that is connected with on-site calibrator so insert the electric power meter of transformer secondary circuit, so that the field-checking of loading.
In realizing process of the present invention, the inventor finds that in use all there is potential safety hazard in existing terminal box: its metal terminal is all exposed during wiring, very easily causes operator to get an electric shock; Join sheet through stirring turn-off current; Make the on-site calibrator series connection insert the secondary current loop of metering mutual inductor, it is insecure not only to be prone to make electric current to join the sheet connection, can be secondary current loop open circuit for maloperation because of the people more; Cause a mutual inductor to damage, influence the safe and stable operation of whole electrical network.
Summary of the invention
In view of this, the object of the invention is to provide a kind of plug formula electric energy meter field verification Safety terminal box, opens a way, overcomes the potential safety hazard that existing terminal box exists with the secondary current loop that avoids the use of in the process.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of plug formula electric energy meter field verification Safety terminal box comprises connector socket and connection plug;
Said connector socket comprises jack housing, and places current transformer, current sampling metalwork and voltage sampling metalwork in the cavity that is formed by said jack housing;
Said jack housing is provided with current sampling jack, voltage sampling jack and insulation jack; Said Current Transformer Secondary side is connected with said current sampling metalwork, and the electric current line of electric energy meter to be measured is connected with said current transformer primary side; Said voltage sampling metalwork is connected with the pressure-wire of electric energy meter to be measured;
Said connection plug comprises the Handheld Division, the current sampling plug that is connected with current output terminal with the current input terminal of on-site calibrator, voltage sampling plug and the blind plug that is connected with the voltage input end of said on-site calibrator; Said current sampling plug, voltage sampling plug and blind plug are fixed on the said Handheld Division;
It is inner that said current sampling plug inserts said connector socket through said current sampling jack, flexibly connects with said current sampling metalwork; It is inner that said voltage sampling plug inserts said connector socket through said voltage sampling jack, flexibly connects with said voltage sampling metalwork.
Preferably, said current transformer is a straight-through current transformer.
Preferably, said current sampling metalwork and voltage sampling metalwork are beryllium copper shell fragment metalwork.
Preferably, be provided with draw-in groove bottom the said jack housing; Said connector socket is fixed in the inside of the metering cabinet at electric energy meter to be measured place through said draw-in groove, and said connection plug places the outside of said metering cabinet.
Can find out from above-mentioned technical scheme; The present invention inserts the secondary current loop of electric energy meter to be measured the primary side of current transformer; On-site calibrator is inserted the secondary side of current transformer through current sampling metalwork, voltage sampling metalwork, current sampling plug and voltage sampling plug; Induction by current through current transformer; Make on-site calibrator get access to the electric current and the voltage of electric energy meter to be measured, do not need on-site calibrator is directly inserted electric energy meter secondary current to be measured loop, thus the secondary circuit open circuit of electric energy meter to be measured causes when having stopped the verification wiring electrical network, equipment and personal safety hidden danger.And all kinds of sampling metalworks are encapsulated in the plug body, outside not being exposed to, have stopped the accident potential that the verification personnel bump connection terminal or are with the some loop to get an electric shock because of mistake.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the terminal box that the embodiment of the invention provided;
Fig. 2 is the cross-sectional view of the terminal box current sampling part that the embodiment of the invention provided;
Fig. 3 is the cross-sectional view of the terminal box voltage sampling part that the embodiment of the invention provided;
Synoptic diagram when Fig. 4 has just inserted the wiring base for the connection plug of the terminal box that the embodiment of the invention provided;
Synoptic diagram when Fig. 5 inserts the wiring base fully for the connection plug of the terminal box that the embodiment of the invention provided;
Fig. 6 is a kind of arrangement mode synoptic diagram of each sampling element of terminal box that the embodiment of the invention provided;
Fig. 7 is the structural representation of the wiring base of the terminal box that the embodiment of the invention provided.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention discloses a kind of plug formula electric energy meter field verification Safety terminal box, open a way, overcome the potential safety hazard that existing terminal box exists with the secondary current loop that avoids the use of in the process.
With reference to Fig. 1 ~ 3, the plug formula electric energy meter field verification Safety terminal box that the embodiment of the invention provides comprises connector socket 1 and connection plug 2;
Current sampling plug 21 inserts connector socket 1 inside through current sampling jack 15, flexibly connects with current sampling metalwork 13; Voltage sampling plug 22 inserts connector socket 1 inside through voltage sampling jack 16, flexibly connects with voltage sampling metalwork 14.
Because connector socket is connected with tested electric energy meter all the time; Current transformer 12 primary sides have electric current to flow through all the time, and for preventing its secondary side open circuit, nonconducting blind plug 23 is shorter slightly than current sampling plug 21; Make: do not insert at connection plug 2 under the situation of connector socket 1; Two current sampling metalworks 13 that are connected with same current transformer 12 are in contact with one another (06 contact site for the two among Fig. 2), make the secondary circuit short-circuit of straight-through current transformer 12, and are as shown in Figure 2; When connection plug 2 inserts in the process of connector socket 1; The current sampling metalwork contacts earlier with the current sampling plug (promptly to be connected earlier as the current sampling path of current transformer 12 secondary side loads; As shown in Figure 4); Blind plug 23 inserts between interconnected two current sampling metalworks 13 again, it is broken off connect, and is as shown in Figure 5.
Structure elder sister's circuit connecting mode by above-mentioned plug formula electric energy meter field verification Safety terminal box can be known; The embodiment of the invention inserts the secondary current loop of electric energy meter to be measured the primary side of current transformer; On-site calibrator is inserted the secondary side of current transformer through current sampling metalwork, voltage sampling metalwork, current sampling plug and voltage sampling plug; Induction by current through current transformer; Make on-site calibrator get access to the electric current and the voltage of electric energy meter to be measured; Do not need on-site calibrator is directly inserted electric energy meter secondary current to be measured loop, thus the secondary circuit open circuit of electric energy meter to be measured causes when having stopped the verification wiring electrical network, equipment and personal safety hidden danger.And all kinds of sampling metalworks are encapsulated in the plug body, outside not being exposed to, have stopped the accident potential that the verification personnel bump connection terminal or are with the some loop to get an electric shock because of mistake.
Concrete, the current transformer 12 in the foregoing description can adopt straight-through current transformer, and the electric current line of electric energy meter to be measured passes this straight-through current transformer, can realize and being connected of current transformer primary side.
Further; Because tested electric energy meter is the three-phase and four-line electric energy meter; So straight-through current transformer 12 has 3, is passed by A, B, C three-phase electricity streamline respectively, current sampling metalwork 13, current sampling jack 15, current sampling plug 21 all have 6; Wherein 3 are used for the electric current input, and other 3 are used for electric current output; Voltage sampling metalwork 14, voltage sampling jack 16 and voltage sampling plug 22 all have 4, are respectively applied for being connected of A, B, C three-phase electricity line ball and zero line; Insulation jack 17 is 3 with blind plug 23.
For making things convenient for plug and play; Said elements can be arranged by mode shown in Figure 6,111 ~ 113 corresponding 3 current sampling metalworks 13 that connect with different straight-through current transformer secondary side one ends, or 3 current sampling jacks 15; Or 3 current sampling plugs 21, be used for the electric current input; 201 ~ 204 corresponding 4 voltage sampling metalworks, or 4 voltage sampling jacks, or 4 voltage sampling plugs; The contact site 06 of 121 ~ 123 corresponding 3 two current sampling metalworks 13 that are connected with same straight-through current transformer 12, or 3 insulation jacks 17, or 3 blind plugs 23; 131 ~ 133 corresponding all the other 3 current sampling metalworks 13, or all the other 3 current sampling jacks 15, or all the other 3 current sampling plugs 21 are used for electric current output.
It is thus clear that the described terminal box of the embodiment of the invention adopts the access way of plug-socket, does not need any aid during the verification wiring; Wiring operation (electric energy meter to be measured is connected with connector socket) is arranged when only installing for the first time; During verification, only need the jacks that pass through to take a sample such as all kinds of sampling plugs are inserted in the connector socket, all kinds of sampling plugs are connected with corresponding sampling metalwork; Realize the access of on-site calibrator; Simple to operate, reduced operant level requirement to the verification personnel, reduce even stopped false wiring.
Further, in other embodiment of the present invention, the current sampling metalwork 13 in the foregoing description specifically can adopt beryllium copper shell fragment metalwork with voltage sampling metalwork 14.
Further; In other embodiment of the present invention, jack housing 1 bottom among above-mentioned all embodiment is provided with draw-in groove 07, and is as shown in Figure 7; Be used for connector socket 1 is fixed in the inside of the metering cabinet at electric energy meter to be measured place, connection plug 2 places the outside of said metering cabinet.
The above embodiment of the present invention is fixed in metering cabinet inside with the wiring base, and the current return of electric energy meter and the lead-in wire of voltage circuit all do not expose metering cabinet, so only otherwise open metering cabinet, just can't break off with the electric energy meter short circuit of current loop or with voltage circuit; And obtain the electric current and the voltage of electric energy meter through the induction by current of the straight-through current transformer in the wiring base; The short circuit of carrying out current return through the wiring base also is the secondary circuit short-circuit with straight-through current transformer; Can't be to the short circuit of current loop of electric energy meter, also can't the off voltage loop.Therefore, the stealing hidden danger stopped of the above embodiment of the present invention.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1. a plug formula electric energy meter field verification Safety terminal box is characterized in that, comprises connector socket and connection plug;
Said connector socket comprises jack housing, and places current transformer, current sampling metalwork and voltage sampling metalwork in the cavity that is formed by said jack housing;
Said jack housing is provided with current sampling jack, voltage sampling jack and insulation jack; Said Current Transformer Secondary side is connected with said current sampling metalwork, and the electric current line of electric energy meter to be measured is connected with said current transformer primary side; Said voltage sampling metalwork is connected with the pressure-wire of electric energy meter to be measured;
Said connection plug comprises the Handheld Division, the current sampling plug that is connected with current output terminal with the current input terminal of on-site calibrator, voltage sampling plug and the blind plug that is connected with the voltage input end of said on-site calibrator; Said current sampling plug, voltage sampling plug and blind plug are fixed on the said Handheld Division;
It is inner that said current sampling plug inserts said connector socket through said current sampling jack, flexibly connects with said current sampling metalwork; It is inner that said voltage sampling plug inserts said connector socket through said voltage sampling jack, flexibly connects with said voltage sampling metalwork.
2. terminal box according to claim 1 is characterized in that, said current transformer is a straight-through current transformer.
3. terminal box according to claim 1 is characterized in that, said current sampling metalwork and voltage sampling metalwork are beryllium copper shell fragment metalwork.
4. terminal box according to claim 1 is characterized in that, said jack housing bottom is provided with draw-in groove; Said connector socket is fixed in the inside of the metering cabinet at electric energy meter to be measured place through said draw-in groove, and said connection plug places the outside of said metering cabinet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210313133.5A CN102798838B (en) | 2012-08-29 | 2012-08-29 | Pluggable safety junction box for site calibration of electric energy meter |
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| CN201210313133.5A CN102798838B (en) | 2012-08-29 | 2012-08-29 | Pluggable safety junction box for site calibration of electric energy meter |
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| CN102798838A true CN102798838A (en) | 2012-11-28 |
| CN102798838B CN102798838B (en) | 2015-06-10 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605104A (en) * | 2013-09-16 | 2014-02-26 | 深圳供电局有限公司 | On-site detecting and wiring device for three-phase electric energy meter |
| CN103698733A (en) * | 2013-09-18 | 2014-04-02 | 国家电网公司 | Test wiring terminal component for metering electric energy |
| CN103713167A (en) * | 2013-12-31 | 2014-04-09 | 深圳市思达仪表有限公司 | Electric energy meter terminal base and calibration structure thereof |
| CN104181494A (en) * | 2013-05-22 | 2014-12-03 | 国家电网公司 | Electric-energy-meter measurer |
| CN106505421A (en) * | 2016-11-17 | 2017-03-15 | 国网山东省电力公司阳谷县供电公司 | Anti-electricity-theft use power distribution cabinet |
| CN107390159A (en) * | 2017-07-31 | 2017-11-24 | 国网山东省电力公司青州市供电公司 | Tester for electric energy meter and its application method |
| CN108196216A (en) * | 2016-11-20 | 2018-06-22 | 国网江西省电力公司赣东北供电分公司 | A kind of electric energy meter verifies three-phase voltage attachment device |
| CN109085402A (en) * | 2018-08-30 | 2018-12-25 | 中国电力科学研究院有限公司 | The multifunctional combined terminal box of electrical energy measurement |
| CN111751778A (en) * | 2020-05-20 | 2020-10-09 | 中国电力科学研究院有限公司 | Detection system and method for reliable access of electric energy meter calibration instrument |
| CN112117603A (en) * | 2020-08-28 | 2020-12-22 | 贵州电网有限责任公司 | Electrical quick wiring and wiring box with wire arranging function |
| CN113391108A (en) * | 2021-07-29 | 2021-09-14 | 广东电网有限责任公司 | Plug-in type electric energy meter junction box and electric meter box |
| CN113625010A (en) * | 2021-07-29 | 2021-11-09 | 国网重庆市电力公司营销服务中心 | Wiring device |
| CN113721183A (en) * | 2021-08-31 | 2021-11-30 | 国网重庆市电力公司营销服务中心 | Modular functional plug suitable for plug-in type test junction box and use method |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181494A (en) * | 2013-05-22 | 2014-12-03 | 国家电网公司 | Electric-energy-meter measurer |
| CN103605104A (en) * | 2013-09-16 | 2014-02-26 | 深圳供电局有限公司 | On-site detecting and wiring device for three-phase electric energy meter |
| CN103698733A (en) * | 2013-09-18 | 2014-04-02 | 国家电网公司 | Test wiring terminal component for metering electric energy |
| CN103698733B (en) * | 2013-09-18 | 2016-08-17 | 国家电网公司 | A kind of test connection terminal assemblies for electric energy metrical |
| CN103713167A (en) * | 2013-12-31 | 2014-04-09 | 深圳市思达仪表有限公司 | Electric energy meter terminal base and calibration structure thereof |
| CN106505421A (en) * | 2016-11-17 | 2017-03-15 | 国网山东省电力公司阳谷县供电公司 | Anti-electricity-theft use power distribution cabinet |
| CN106505421B (en) * | 2016-11-17 | 2018-06-19 | 国网山东省电力公司阳谷县供电公司 | It is anti-electricity-theft to use power distribution cabinet |
| CN108196216A (en) * | 2016-11-20 | 2018-06-22 | 国网江西省电力公司赣东北供电分公司 | A kind of electric energy meter verifies three-phase voltage attachment device |
| CN107390159A (en) * | 2017-07-31 | 2017-11-24 | 国网山东省电力公司青州市供电公司 | Tester for electric energy meter and its application method |
| CN107390159B (en) * | 2017-07-31 | 2022-08-23 | 国网山东省电力公司青州市供电公司 | Electric energy meter calibration device and use method thereof |
| CN109085402B (en) * | 2018-08-30 | 2021-08-06 | 中国电力科学研究院有限公司 | Multifunctional combined junction box for electric energy metering |
| CN109085402A (en) * | 2018-08-30 | 2018-12-25 | 中国电力科学研究院有限公司 | The multifunctional combined terminal box of electrical energy measurement |
| CN111751778A (en) * | 2020-05-20 | 2020-10-09 | 中国电力科学研究院有限公司 | Detection system and method for reliable access of electric energy meter calibration instrument |
| CN111751778B (en) * | 2020-05-20 | 2022-10-04 | 中国电力科学研究院有限公司 | Detection system and method for reliable access of electric energy meter calibration instrument |
| CN112117603A (en) * | 2020-08-28 | 2020-12-22 | 贵州电网有限责任公司 | Electrical quick wiring and wiring box with wire arranging function |
| CN113391108A (en) * | 2021-07-29 | 2021-09-14 | 广东电网有限责任公司 | Plug-in type electric energy meter junction box and electric meter box |
| CN113625010A (en) * | 2021-07-29 | 2021-11-09 | 国网重庆市电力公司营销服务中心 | Wiring device |
| CN113625010B (en) * | 2021-07-29 | 2023-08-22 | 国网重庆市电力公司营销服务中心 | Wiring device |
| CN113721183A (en) * | 2021-08-31 | 2021-11-30 | 国网重庆市电力公司营销服务中心 | Modular functional plug suitable for plug-in type test junction box and use method |
| CN113721183B (en) * | 2021-08-31 | 2023-12-01 | 国网重庆市电力公司营销服务中心 | Modularized functional plug suitable for plug-in test junction box and use method |
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Effective date of registration: 20121122 Address after: 401123 No. 80, Mount Huangshan Avenue, Yubei District, Chongqing Applicant after: Chongqing Electric Power Corp., China Electric Power Research Institute Applicant after: State Grid Corporation of China Address before: 401123 No. 80, Mount Huangshan Avenue, Yubei District, Chongqing Applicant before: Chongqing Electric Power Corp., China Electric Power Research Institute |
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