CN103823152A - Direct-current grounding detection device - Google Patents
Direct-current grounding detection device Download PDFInfo
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- CN103823152A CN103823152A CN201410088866.2A CN201410088866A CN103823152A CN 103823152 A CN103823152 A CN 103823152A CN 201410088866 A CN201410088866 A CN 201410088866A CN 103823152 A CN103823152 A CN 103823152A
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Abstract
The invention discloses a direct-current grounding detection device. The direct-current grounding detection device comprises a shell, wherein the shell is provided with an operation panel; the operation panel comprises a wiring region; the wiring region is provided with a plurality of positive pole wiring terminals and a plurality of negative pole wiring terminals which are used for connecting a mutual inductor; a bridge type circuit is further connected among the positive pole wiring terminals and the negative pole wiring terminals; four terminals of the bridge type circuit are arranged in the wiring region; the positive pole wiring terminals are arranged above the wiring region and the negative pole wiring terminals are arranged below the wiring region; the wiring terminals of the bridge type circuit are arranged in the middle of the wiring region. According to the direct-current grounding detection device, the operation panel is provided with the special wiring region and the wiring is concentrated; the plurality of positive pole wiring terminals and the plurality of negative pole wiring terminals are arranged so that a plurality of different grounding detection manners can be realized; the inserting type wiring terminals are used for connecting and a connection line is convenient to use.
Description
Technical field
The present invention relates to the utility appliance of electric system, particularly a kind of DC earthing pick-up unit for detection of the earth fault in transformer station.
Background technology
In electric system, DC operating system adopts the operation of the insulation against ground method of operation.In the time there is DC earthing, not only can cause the mistake action and rejecting action of protective relaying device, even can cause the mistake action and rejecting action of the equipment that adopts DC control, so can cause the damage of power equipment, cause large-area power-cuts, consequence is serious.Therefore need to adopt DC earthing pick-up unit to detect and whether have DC operating system ground connection.Ground connection is detected the mode conventionally adopting anodal single-point grounding, anodal multipoint earthing, negative pole single-point grounding and negative pole multipoint earthing.But conventional DC earthing pick-up unit is by conventionally only having one or two terminals at negative or positive electrode, cannot realize above-mentioned multiple earthing mode, and in the time of wiring, conventionally adopt the forms such as alligator to connect, in the time changing connected mode, be not easy to inefficiency, use inconvenience.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of DC earthing pick-up unit, on guidance panel, be provided with special Wiring area, wiring is concentrated, and positive terminal and negative terminals all have several, can realize multiple different ground connection detection mode, and adopt the connection terminal of plug-in type to connect, line is easy to use.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of DC earthing pick-up unit, comprise a housing, on described housing, there is a guidance panel, guidance panel includes Wiring area, on described Wiring area, be respectively equipped with positive terminal and negative terminals for connecting mutual inductor, the sub-ground connection of described negative terminals, described positive terminal and negative terminals all have several, between described positive terminal and negative terminals, be also connected with bridge circuit, four terminals at described bridge circuit are arranged in Wiring area, described positive terminal is arranged on the top in Wiring area, negative terminals is arranged on the below of Wiring area, the connection terminal of bridge circuit is arranged on the middle part of Wiring area.
Preferably, be also provided with the connection terminal that connects electric capacity in Wiring area, described electric capacity has four, and four described electric capacity are equipped with connection terminal.
Preferably, described bridge circuit and described four electric capacity are altogether.
Preferably, described Wiring area is arranged on the left-half of guidance panel, is provided with a display panel at the right half part of guidance panel, is provided with one for connecting the USB interface of host computer below display panel.
Preferably, described negative terminals sub-connection has internal electric source lead-out terminal and external power source input terminal, and described internal electric source lead-out terminal is connected interchange ground terminal with after the parallel connection of external power source input terminal.
Adopt after technique scheme, tool of the present invention has the following advantages:
Described guidance panel is provided with special Wiring area, facilitates wiring, and all concentrated settings of all wiring, can not cause the in disorder of guidance panel.Adopt connection terminal to carry out wiring, facilitated wiring in use, and described positive terminal and negative terminals are by several, can realize multiple connected mode.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Fig. 1 is that guidance panel of the present invention is arranged schematic diagram.
Embodiment
As shown in Figure 1, a kind of DC earthing pick-up unit, comprise a housing, on described housing, there is a guidance panel, guidance panel includes Wiring area, on described Wiring area, be respectively equipped with positive terminal 1 and negative terminals 2 for connecting mutual inductor, described negative terminals 2 ground connection, described positive terminal 1 and negative terminals 2 all have several, between described positive terminal 1 and negative terminals 2, be also connected with bridge circuit 3, four terminals at described bridge circuit 3 are arranged in Wiring area, described positive terminal 1 is arranged on the top in Wiring area, negative terminals 2 is arranged on the below of Wiring area, bridge circuit connection terminal is arranged on the middle part of Wiring area.Described bridge circuit, electric capacity etc. is all arranged on enclosure interior, forms a circuit link circuit that completes DC earthing pick-up unit.On described guidance panel, be provided with and use specially and the Wiring area that is connected external cabling, facilitate the concentrated setting of all wiring, avoided the in disorder of wiring.Person easy to use searches wiring.On Wiring area, the position of corresponding wiring terminal is provided with mark, and person easy to use connects, and wiring is easy.All wiring all adopt connection terminal to carry out wiring easy-to-connect, easy in the time changing the mode of connection.Above the cloth of Wiring area is set up positive terminal is arranged on, negative terminals is arranged on below, and bridge circuit connection terminal is arranged on middle part, the position of placing according to circuit in housing is arranged, intuitively, user is difficult for makeing mistakes, and easily checks in the time makeing mistakes.Described positive terminal and negative terminals, by several, facilitate the various ground connection detection modes described in background technology to connect.
Also be provided with the connection terminal that connects electric capacity in Wiring area, described electric capacity has four, and four described electric capacity are equipped with connection terminal.Regulate and filtering by described electric capacity, and user can select concrete which electric capacity that connects, the concrete size according to required electric capacity as required.Described bridge circuit 3 and four described electric capacity altogether, have been simplified connecting circuit, and at the electric capacity of selecting to connect according to the rectification situation of bridge circuit, and by undesired signal ground connection.
As preferred implementation, described Wiring area is arranged on the left-half of guidance panel, is provided with a display panel 6 at the right half part of guidance panel, is provided with one for connecting the USB interface 7 of host computer below display panel 6.Show positive terminal and the data cases of negative terminals in the time connecting mutual inductor by described display panel 6, and judge the result of measurement data by the control chip in device case, what person easy to use intuitively understood pinpoints the problems, and can handle it in time.Described USB interface connects host computer, data and result is transferred to host computer, in the time there is polar region fault.By the disconnection of PC control grid equipment, avoid the generation of mistake action and rejecting action phenomenon.
Described negative terminals 2 is also connected with internal electric source lead-out terminal 4 and external power source input terminal 5, after described internal electric source lead-out terminal 4 is in parallel with external power source input terminal 5, is connected and exchanges ground terminal.Power supply is provided and inner power supply is exported.
Except above preferred embodiment, the present invention also has other embodiment, and those skilled in the art can make according to the present invention various changes and distortion, only otherwise depart from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (5)
1. a DC earthing pick-up unit, it is characterized in that: comprise a housing, on described housing, there is a guidance panel, guidance panel includes Wiring area, on described Wiring area, be respectively equipped with positive terminal (1) and negative terminals (2) for connecting mutual inductor, described negative terminals (2) ground connection, described positive terminal (1) and negative terminals (2) all have several, between described positive terminal (1) and negative terminals (2), be also connected with bridge circuit (3), four terminals at described bridge circuit (3) are arranged in Wiring area, described positive terminal (1) is arranged on the top in Wiring area, negative terminals (2) is arranged on the below of Wiring area, bridge circuit connection terminal is arranged on the middle part of Wiring area.
2. DC earthing pick-up unit according to claim 1, is characterized in that: be also provided with the connection terminal that connects electric capacity in Wiring area, described electric capacity has four, and four described electric capacity are equipped with connection terminal.
3. DC earthing pick-up unit according to claim 2, is characterized in that: described bridge circuit (3) and four described electric capacity are altogether.
4. DC earthing pick-up unit according to claim 1, it is characterized in that: described Wiring area is arranged on the left-half of guidance panel, be provided with a display panel (6) at the right half part of guidance panel, be provided with one in the below of display panel (6) for connecting the USB interface (7) of host computer.
5. DC earthing pick-up unit according to claim 1, it is characterized in that: described negative terminals (2) is connected with internal electric source lead-out terminal (4) and external power source input terminal (5), after described internal electric source lead-out terminal (4) is in parallel with external power source input terminal (5), is connected and exchanges ground terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088866.2A CN103823152A (en) | 2014-03-11 | 2014-03-11 | Direct-current grounding detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088866.2A CN103823152A (en) | 2014-03-11 | 2014-03-11 | Direct-current grounding detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103823152A true CN103823152A (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410088866.2A Pending CN103823152A (en) | 2014-03-11 | 2014-03-11 | Direct-current grounding detection device |
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| CN (1) | CN103823152A (en) |
Citations (15)
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|---|---|---|---|---|
| EP0057616B1 (en) * | 1981-02-04 | 1987-05-20 | North American Philips Lighting Corporation | Starting and operating apparatus for fluorescent lamps |
| CN2257023Y (en) * | 1995-12-20 | 1997-06-25 | 吴国良 | DC system grounding monitor and seeking apparatus |
| CN2461005Y (en) * | 2001-01-18 | 2001-11-21 | 华东电力试验研究院 | Device for on-line measuring DC transmission earth pole |
| CN2553386Y (en) * | 2002-07-04 | 2003-05-28 | 陈虎 | D.C. system earthing detector |
| WO2008044593A1 (en) * | 2006-10-05 | 2008-04-17 | Max Co., Ltd. | Grounding line connection monitor device and electric device |
| CN101256205A (en) * | 2007-02-27 | 2008-09-03 | 上海久电科技开发有限公司 | Instrument for measuring and recording mutation current of neutral point earthing resistor |
| CN201589839U (en) * | 2009-12-25 | 2010-09-22 | 上海希明电气技术有限公司 | Integrated device for inspecting ground fault of direct-current system |
| CN201904596U (en) * | 2010-11-17 | 2011-07-20 | 江苏省电力公司苏州供电公司 | General grounding box for cable sheath |
| CN102478613A (en) * | 2010-11-29 | 2012-05-30 | 陕西柯蓝电子有限公司 | Portable direct-current earth fault finder |
| CN202583391U (en) * | 2012-04-18 | 2012-12-05 | 孟州市电力公司 | Transmission line grounding fault detection instrument |
| JP2012253901A (en) * | 2011-06-02 | 2012-12-20 | Chugoku Electric Power Co Inc:The | Direct current ground fault detection device, method for detecting ground fault of direct current circuit and method for switching direct current power source |
| CN202903945U (en) * | 2012-11-26 | 2013-04-24 | 湖南华菱湘潭钢铁有限公司 | Direct-current system line grounding fault alarm apparatus |
| CN203069728U (en) * | 2013-02-05 | 2013-07-17 | 山东电力集团公司东营供电公司 | Portable DC grounding system fault locator |
| CN203465297U (en) * | 2013-09-17 | 2014-03-05 | 国家电网公司 | Grounding device for electrical testing |
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2014
- 2014-03-11 CN CN201410088866.2A patent/CN103823152A/en active Pending
Patent Citations (15)
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| EP0057616B1 (en) * | 1981-02-04 | 1987-05-20 | North American Philips Lighting Corporation | Starting and operating apparatus for fluorescent lamps |
| CN2257023Y (en) * | 1995-12-20 | 1997-06-25 | 吴国良 | DC system grounding monitor and seeking apparatus |
| CN2461005Y (en) * | 2001-01-18 | 2001-11-21 | 华东电力试验研究院 | Device for on-line measuring DC transmission earth pole |
| CN2553386Y (en) * | 2002-07-04 | 2003-05-28 | 陈虎 | D.C. system earthing detector |
| WO2008044593A1 (en) * | 2006-10-05 | 2008-04-17 | Max Co., Ltd. | Grounding line connection monitor device and electric device |
| CN101256205A (en) * | 2007-02-27 | 2008-09-03 | 上海久电科技开发有限公司 | Instrument for measuring and recording mutation current of neutral point earthing resistor |
| CN201589839U (en) * | 2009-12-25 | 2010-09-22 | 上海希明电气技术有限公司 | Integrated device for inspecting ground fault of direct-current system |
| CN201904596U (en) * | 2010-11-17 | 2011-07-20 | 江苏省电力公司苏州供电公司 | General grounding box for cable sheath |
| CN102478613A (en) * | 2010-11-29 | 2012-05-30 | 陕西柯蓝电子有限公司 | Portable direct-current earth fault finder |
| JP2012253901A (en) * | 2011-06-02 | 2012-12-20 | Chugoku Electric Power Co Inc:The | Direct current ground fault detection device, method for detecting ground fault of direct current circuit and method for switching direct current power source |
| CN202583391U (en) * | 2012-04-18 | 2012-12-05 | 孟州市电力公司 | Transmission line grounding fault detection instrument |
| CN202903945U (en) * | 2012-11-26 | 2013-04-24 | 湖南华菱湘潭钢铁有限公司 | Direct-current system line grounding fault alarm apparatus |
| CN203069728U (en) * | 2013-02-05 | 2013-07-17 | 山东电力集团公司东营供电公司 | Portable DC grounding system fault locator |
| CN203465297U (en) * | 2013-09-17 | 2014-03-05 | 国家电网公司 | Grounding device for electrical testing |
| CN203745587U (en) * | 2014-03-11 | 2014-07-30 | 国家电网公司 | DC grounding detection apparatus |
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Application publication date: 20140528 |