CN102854405A - Safe and efficient high-voltage nuclear phasing method - Google Patents
Safe and efficient high-voltage nuclear phasing method Download PDFInfo
- Publication number
- CN102854405A CN102854405A CN2012103397502A CN201210339750A CN102854405A CN 102854405 A CN102854405 A CN 102854405A CN 2012103397502 A CN2012103397502 A CN 2012103397502A CN 201210339750 A CN201210339750 A CN 201210339750A CN 102854405 A CN102854405 A CN 102854405A
- Authority
- CN
- China
- Prior art keywords
- voltage
- phase
- nuclear
- phasing
- sliding plate
- 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.)
- Pending
Links
Images
Abstract
The invention relates to a safe and efficient high-voltage nuclear phasing method. The method is to safely and reliably carry out high-voltage detection and nuclear phasing under a condition that a nuclear phasing device is not contacted at all, wherein the nuclear phasing device mainly comprises a left sliding rod, a right sliding rod, an upper sliding plate and a lower sliding plate which are all connected in the '#' shape; a time relay and three digital voltage meters are mounted on the upper sliding plate, and the digital voltage meters are used for measuring the voltage, and each digital voltage meter is connected with the time relay; a phase-sequence meter, an upper end charged display, a lower end charged display and a voltage change-over switch are mounted on the lower sliding plate; the upper sliding plate and the lower sliding plate are respectively provided with three voltage dropping resistors, and the tail parts of the voltage dropping resistors are connected with respective sliding plate and can slide on the sliding plates; the tail ends of the voltage dropping resistors are connected with instruments on the sliding plates or the ground through wires; and magnetic pedestals are mounted at the bottoms of the left sliding rod and the right sliding rod. According to the safe and efficient high-voltage nuclear phasing method provided by the invention, a high-voltage board is adopted for supplying power after fixing the device, and the detection and nuclear phasing can be carried out without contacting the device, so that the safety in the work of nuclear phasing can be greatly improved.
Description
Technical field
The present invention relates to debugging and the operation of electric system, a kind of high-tension electricity inspection of concrete finger and nuclear-phase method.
Background technology
Be subjected in the electric process in high-pressure system, two-way and above power supply must phase place is just the same could access same system, at this moment just must carry out nuclear phase to the power supply of delivering to high-voltage board, to guarantee the normal operation of high-pressure system.Common nuclear-phase method is, at the high-voltage board place that carries out high-voltage nuclear phase, the handle of the hand-held phasing tester of operating personnel, contact respectively the three-phase of two sections high-voltage power supplies in the high-voltage board with the front end of phasing tester, judge the phase sequence of power supply with the magnitude of voltage between the different contacts that show, the phase sequence of two sections power supplys of expression is consistent if the magnitude of voltage of each phase homophase is zero, otherwise inconsistent, needs the wherein phase sequence of one section power supply of transposing.This method of operating is simple, but needs operating personnel that abundant working experience and good psychological quality are arranged.If psychological quality is bad, easily when nuclear phase, hold the hand shake of phasing tester, cause unnecessary trouble even accident.So some operating personnel dare not use phasing tester at all, this all is that potential safety hazard by present phasing tester is caused.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of safe high-voltage nuclear phase method is provided, can makes operating personnel not need too many working experience and psychological quality can finish fast high-voltage nuclear phase work, improve security and the high efficiency of nuclear phase work.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of safe and efficient high-voltage nuclear phase method is characterized in that: the high pressure that carries out safe and reliable under the condition that does not contact phase checking device fully detects and nuclear phase; Described phase checking device mainly comprises left and right slide bar and the upper and lower sliding panel that is the connection of " well " word; The time relay and three digital voltmeters that are used for measuring voltage are installed on the upper sliding plate, and every voltage table all links to each other with the time relay; Phase-sequence meter, upper end electrification display, lower end electrification display and voltage change-over switch are installed on the lower slider plate; Three dropping resistors also are housed respectively on the upper and lower sliding panel, and the afterbody of dropping resistor links to each other with separately sliding panel respectively, and can slide at sliding panel; The tail end of dropping resistor links to each other by the instrument on electric wire and the sliding panel or ground; Magnetic bases are equipped with in the bottom of left and right sides slide bar; Described phase-sequence meter is set to measure the phase sequence of terminal voltage, and the upper end electrification display is set to judge whether the upper end power supply is charged, and lower end end electrification display is set to judge whether the lower end power supply is charged; Described voltage change-over switch is used for the measuring-signal of converting digital voltage table, shows the magnitude of voltage between different voltages mutually; Described voltage change-over switch has third gear: zero-bit shelves, one grade, second gear; The magnitude of voltage that the zero-bit shelves show is respectively A1-A2, B1-B2, the voltage between the C1-C2; One grade of indication be A1-B2, B1-C2, the voltage between the C1-A2; That second gear is indicated is A1-C2, B1-A2, the voltage between the C1-B2; A1, B1, C1 and A2, B2, C2 represent three phase places that upper and lower probe is indicated respectively separately;
Specifically comprise following steps:
Isolating switch in the high-voltage board of preparation nuclear phase is extracted out, phase checking device is placed in the breaker chamber, open and the fixing baffle plate of isolating switch, according to the upper sliding plate of the spacing adjusting device of upper and lower side high pressure static contact in the high-voltage board and the height of lower slider plate, regulate width between left slide bar and the right slide bar according to the physical size of high-voltage board, regulate the spacing of dropping resistor according to the spacing of alternate static contact, so that the spacing of six scalable probes of phase checking device is consistent with the spacing of static contact in the high-voltage board; Phase checking device is advanced in the cabinet so that scalable probe contacts well with the high pressure static contact, and the electromagnetic switch of opening base one and base two is phase checking device fixedly, and the ground wire of device is linked to each other with the cabinet of high-voltage board;
The high-tension electricity of two sections of high-voltage boards is served, as long as high-tension electricity is brought, whether the upper and lower side that just can observe very intuitively high-voltage board by two electrification displays is charged; If electricity is arranged, observe phase-sequence meter and judge whether the voltage of the upper end of high-voltage board is positive phase sequence, if not, just need to be to the power supply phase modulation of upper end; If positive phase sequence, and voltage change-over switch is when placing zero-bit, as three voltage tables be shown as zero or voltage very little, judge that then the two-way power supply is same-phase; If any only have a voltage table be shown as zero or voltage very little, represent that then the phase sequence of lower end high-voltage power supply is anti-phase, only need the Voltage Cable Lines Construction on other two roads that voltage table takes back, lower end exchanged and get final product; Show all very highly such as three voltage table voltages, judge that then two-way power phase order is completely wrong up and down, at this moment can being converted to one grade or second gear by voltage change-over switch, just can to judge which two-phase be homophase, then adjusts the high-tension cable that connects according to judgement.
By technique scheme, the delay time of the described time relay is set as required; Digital voltmeter and the time relay all by separately powered battery, do not need external power supply.
By technique scheme, the head of dropping resistor be equipped with can with the flexible probe of high-voltage contact good contact.
By technique scheme, the magnetic bases of left and right sides slide bar bottom can switch control.
Thus, when being encased in phase checking device in the high-voltage board, the upper and lower side of high-voltage board is uncharged, can contact; After device fixed, high-voltage board just sent electricity, at this moment just can not contact and detect and nuclear phase, had significantly improved the nuclear phase job security.
Beneficial effect of the present invention is: 1) do not need operating personnel's hand-held, safety; 2) psychological quality and working experience requirement to operating personnel have been reduced.
Description of drawings
Fig. 1 is the structural representation (front view) of a kind of specific embodiment of apparatus of the present invention;
Fig. 2 is the structural representation (vertical view) of a kind of specific embodiment of apparatus of the present invention;
Fig. 3 is the structural representation (left view) of a kind of specific embodiment of apparatus of the present invention;
Each Reference numeral is among the figure: 1-upper sliding plate, 2-lower slider plate, the left slide bar of 3-, the right slide bar of 4-, 5-digital voltmeter, 6-phase-sequence meter, 7-upper end electrification display, 8-lower end electrification display, 9-voltage change-over switch, 10-base one, 11-base two, the scalable probe of 12-, 13-dropping resistor, the 14-time relay.
Embodiment
Below in conjunction with the drawings and specific embodiments test method of the present invention is described in further detail:
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail:
According to safe and efficient high-pressure nuclear phase device of the invention process, comprise left slide bar 3, right slide bar 4 that vertical spacing arranges, be fixed on left slide bar 3 and the right slide bar 4 to upper sliding plate 1 and lower slider plate 2 horizontal parallel, be " well " font and connect; Be provided with horizontal concrete chute on upper sliding plate 1 and the lower slider plate 2, left slide bar 3, right slide bar 4 transversely chute horizontally slip and carry out width adjusting; On the described left and right slide bar 3 and 4 vertical chute is arranged, upper and lower sliding panel 1 and 2 can move up and down along vertical chute easily; Thus, so that height and the width of " well " character form structure of device can arbitrarily be regulated, be fit to the high-voltage board of different size.
Three highly sensitive digital voltmeters 5 are installed on the described upper sliding plate 1, are used for measuring voltage; Every voltage table 5 is two signal wires in parallel all, link to each other with a high-precision digital display time relay 14, are used for the measured value maintenance, and the delay time of the time relay 14 can be set, and setting-up time is Millisecond.Digital voltmeter 5 and the time relay 14 all by separately powered battery, do not need external power supply.
Phase-sequence meter 6, upper end electrification display 7, lower end electrification display 8 and voltage change-over switch 9 are installed on the described lower slider plate 2.Described phase-sequence meter 6 can be measured the phase sequence of terminal voltage, and upper end electrification display 7 can judge whether the upper end power supply is charged, and lower end end electrification display 8 can judge whether the lower end power supply is charged; Described voltage change-over switch 9 is used for the measuring-signal of converting digital voltage table 5, shows the magnitude of voltage between different voltages mutually.Switch 9 is third gear altogether: zero-bit shelves, one grade, second gear; If the phase place of upper and lower probe indication represents with A1, B1, C1 and A2, B2, C2 respectively, the magnitude of voltage of zero-bit shelves demonstration is respectively A1-A2, B1-B2, the voltage between the C1-C2; One grade of indication be A1-B2, B1-C2, the voltage between the C1-A2; That second gear is indicated is A1-C2, B1-A2, the voltage between the C1-B2.
Described sliding up and down is equipped with three dropping resistors 13 separately on plate 1 and 2, the afterbody of dropping resistor 13 links to each other with separately sliding panel respectively, and can slide in the resistance chute, convenient spacing of regulating between the dropping resistor; The head of dropping resistor 13 is equipped with the scalable probe that can stretch a little, and good contact with high-voltage contact can guarantee to pop one's head in.Instrument on the tail end live wire of described dropping resistor 13 and the sliding panel or ground link to each other, and measuring voltage is provided and makes an instrumentation at low pressure range to instrument.
Described left and right sides slide bar 3 and 4 bottom all are equipped with the left slide bar of magnetic bases 3 bottoms base 1 are housed, base 2 11 is equipped with in right slide bar 4 bottoms, base 1 and base 2 11 are provided with electromagnetic switch, and the magnetic force of base is controlled by switch, can increase stability and the convenient displacement of device.When needs are fixing, by control magnetic described electromagnetic switch is opened.
When utilizing this phase checking device to carry out high-voltage nuclear phase, extract the isolating switch in the high-voltage board of preparation nuclear phase out (generally at the mother cabinet), phase checking device shown in Fig. 1-3 is placed in the breaker chamber, open and the fixing baffle plate of isolating switch, according to the upper sliding plate 1 of the spacing adjusting device of upper and lower side high pressure static contact in the high-voltage board and the height of lower slider plate 2, regulate width between left slide bar 3 and the right slide bar 4 according to the physical size of high-voltage board, regulate the spacing of dropping resistor 13 according to the spacing of alternate static contact, so that the spacing of six scalable probes 12 of phase checking device is consistent with the spacing of static contact in the high-voltage board; Phase checking device is advanced in the cabinet so that scalable probe 12 contacts well with the high pressure static contact, and the electromagnetic switch of opening base 1 and base 2 11 is phase checking device fixedly, and the ground wire of device is linked to each other with the cabinet of high-voltage board;
The high-tension electricity of two sections of high-voltage boards is served, and whether electrification display 7 is examined the high-voltage board upper end on observing charged, if electricity is arranged, observe phase-sequence meter 6 and judge whether the voltage of the upper end of high-voltage board is positive phase sequence, if not, just need to be to the power supply phase modulation of upper end; If positive phase sequence, whether chargedly observe lower end electrification display 8, if charged, voltage change-over switch 9 is placed zero-bit, observe the displayed value of three digital voltmeters 5, if be shown as zero or voltage very little, judge that then the two-way power supply is same-phase; If any only have in the digital voltmeter 5 voltage table be shown as zero or voltage very little, represent that then the phase sequence of lower end high-voltage power supply is anti-phase, only need the Voltage Cable Lines Construction on other two roads that voltage table takes back, lower end exchanged and get final product; Show all very highly such as the voltage of three digital voltmeters 5, judge that then two-way power phase order is completely wrong up and down, at this moment voltage change-over switch 9 can being converted to other gear, just can to judge which two-phase be homophase, then adjusts the high-tension cable that connects according to judgement.
The time relay 14 is used as Function Extension in the device, and displayed value is kept.
Thus, when being encased in phase checking device in the high-voltage board, the upper and lower side of high-voltage board is uncharged, can contact; After device fixed, high-voltage board just sent electricity, at this moment just can not contact and detect and nuclear phase, had significantly improved the nuclear phase job security.
Above disclosed only is preferred embodiment of the present invention; certainly can not limit with this interest field of the present invention; therefore the equivalence of doing according to the present patent application claim changes, and still belongs to protection scope of the present invention such as change and the improvement that technological parameter or device are made.
Claims (4)
1. safe and efficient high-voltage nuclear phase method is characterized in that: the high pressure that carries out safe and reliable under the condition that does not contact phase checking device fully detects and nuclear phase; Described phase checking device mainly comprises left and right slide bar and the upper and lower sliding panel that is the connection of " well " word; The time relay and three digital voltmeters that are used for measuring voltage are installed on the upper sliding plate, and every voltage table all links to each other with the time relay; Phase-sequence meter, upper end electrification display, lower end electrification display and voltage change-over switch are installed on the lower slider plate; Three dropping resistors also are housed respectively on the upper and lower sliding panel, and the afterbody of dropping resistor links to each other with separately sliding panel respectively, and can slide at sliding panel; The tail end of dropping resistor links to each other by the instrument on electric wire and the sliding panel or ground; Magnetic bases are equipped with in the bottom of left and right sides slide bar; Described phase-sequence meter is set to measure the phase sequence of terminal voltage, and the upper end electrification display is set to judge whether the upper end power supply is charged, and lower end end electrification display is set to judge whether the lower end power supply is charged; Described voltage change-over switch is used for the measuring-signal of converting digital voltage table, shows the magnitude of voltage between different voltages mutually; Described voltage change-over switch has third gear: zero-bit shelves, one grade, second gear; The magnitude of voltage that the zero-bit shelves show is respectively A1-A2, B1-B2, the voltage between the C1-C2; One grade of indication be A1-B2, B1-C2, the voltage between the C1-A2; That second gear is indicated is A1-C2, B1-A2, the voltage between the C1-B2; A1, B1, C1 and A2, B2, C2 represent three phase places that upper and lower probe is indicated respectively separately;
Specifically comprise following steps:
Isolating switch in the high-voltage board of preparation nuclear phase is extracted out, phase checking device is placed in the breaker chamber, open and the fixing baffle plate of isolating switch, according to the upper sliding plate of the spacing adjusting device of upper and lower side high pressure static contact in the high-voltage board and the height of lower slider plate, regulate width between left slide bar and the right slide bar according to the physical size of high-voltage board, regulate the spacing of dropping resistor according to the spacing of alternate static contact, so that the spacing of six scalable probes of phase checking device is consistent with the spacing of static contact in the high-voltage board; Phase checking device is advanced in the cabinet so that scalable probe contacts well with the high pressure static contact, and the electromagnetic switch of opening base one and base two is phase checking device fixedly, and the ground wire of device is linked to each other with the cabinet of high-voltage board;
The high-tension electricity of two sections of high-voltage boards is served, as long as high-tension electricity is brought, whether the upper and lower side that just can observe very intuitively high-voltage board by two electrification displays is charged; If electricity is arranged, observe phase-sequence meter and judge whether the voltage of the upper end of high-voltage board is positive phase sequence, if not, just need to be to the power supply phase modulation of upper end; If positive phase sequence, and voltage change-over switch is when placing zero-bit, as three voltage tables be shown as zero or voltage very little, judge that then the two-way power supply is same-phase; If any only have a voltage table be shown as zero or voltage very little, represent that then the phase sequence of lower end high-voltage power supply is anti-phase, only need the Voltage Cable Lines Construction on other two roads that voltage table takes back, lower end exchanged and get final product; Show all very highly such as three voltage table voltages, judge that then two-way power phase order is completely wrong up and down, at this moment can being converted to one grade or second gear by voltage change-over switch, just can to judge which two-phase be homophase, then adjusts the high-tension cable that connects according to judgement.
2. method according to claim 1, it is characterized in that: the delay time of the described time relay is set as required; Digital voltmeter and the time relay all by separately powered battery, do not need external power supply.
3. method according to claim 1 and 2 is characterized in that: the head of dropping resistor be equipped with can with the flexible probe of high-voltage contact good contact.
4. method according to claim 1 and 2 is characterized in that: the magnetic bases of left and right sides slide bar bottom can switch control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103397502A CN102854405A (en) | 2012-09-14 | 2012-09-14 | Safe and efficient high-voltage nuclear phasing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103397502A CN102854405A (en) | 2012-09-14 | 2012-09-14 | Safe and efficient high-voltage nuclear phasing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102854405A true CN102854405A (en) | 2013-01-02 |
Family
ID=47401159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103397502A Pending CN102854405A (en) | 2012-09-14 | 2012-09-14 | Safe and efficient high-voltage nuclear phasing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102854405A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698293A (en) * | 2013-12-06 | 2015-06-10 | 国网上海市电力公司 | Multipurpose three-phase test device |
| CN104698292A (en) * | 2013-12-06 | 2015-06-10 | 国网上海市电力公司 | Adjustable multipurpose three-phase test set |
| CN105140811A (en) * | 2015-08-24 | 2015-12-09 | 国家电网公司 | Special vehicle for switch cabinet phase-detecting experiment |
| CN109599816A (en) * | 2019-01-14 | 2019-04-09 | 马可文 | A kind of power high voltage transmitting device |
| CN111487481A (en) * | 2020-05-08 | 2020-08-04 | 国网山东省电力公司滨州市沾化区供电公司 | Central nuclear phase trolley for switch cabinet and central switch cabinet |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61153571A (en) * | 1984-12-27 | 1986-07-12 | Hitachi Denshi Ltd | Phase detection system for distribution line |
| JP2003066087A (en) * | 2001-08-27 | 2003-03-05 | Chugoku Electric Power Co Inc:The | Phase detecting device |
| JP2006220481A (en) * | 2005-02-09 | 2006-08-24 | Koken:Kk | Method and apparatus of detecting electrostatic type high-pressure synchronous phase |
| CN201018434Y (en) * | 2007-03-16 | 2008-02-06 | 张兆民 | Positive and negative pulse starter of multifunctional pumping unit |
| JP2008026089A (en) * | 2006-07-20 | 2008-02-07 | Hioki Ee Corp | Noncontact phase detection system |
| CN201345754Y (en) * | 2009-01-22 | 2009-11-11 | 镇江赛尔尼柯自动化有限公司 | Double-power input line switching device |
| CN201675396U (en) * | 2010-05-21 | 2010-12-22 | 福州锐达数码科技有限公司 | Fixed support for short-focus projection electronic whiteboard |
| CN201740824U (en) * | 2010-06-24 | 2011-02-09 | 武汉钢铁(集团)公司 | Device for calibrating phase sequence of bus bar in central high-voltage switchgear |
| CN201910580U (en) * | 2010-12-07 | 2011-07-27 | 中发电气股份有限公司 | Adjustable installation bracket in cabinet |
| CN201937193U (en) * | 2010-12-30 | 2011-08-17 | 徐州海伦哲专用车辆股份有限公司 | Mobile box-type transformer substation automobile with automatic phase-checking system |
| CN102495297A (en) * | 2011-12-09 | 2012-06-13 | 辽宁省电力有限公司沈阳供电公司 | Method for realizing phase check function by relay contact |
| CN102629740A (en) * | 2012-04-19 | 2012-08-08 | 辽宁省电力有限公司铁岭供电公司 | Nuclear phase handcart with adjustable width |
-
2012
- 2012-09-14 CN CN2012103397502A patent/CN102854405A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61153571A (en) * | 1984-12-27 | 1986-07-12 | Hitachi Denshi Ltd | Phase detection system for distribution line |
| JP2003066087A (en) * | 2001-08-27 | 2003-03-05 | Chugoku Electric Power Co Inc:The | Phase detecting device |
| JP2006220481A (en) * | 2005-02-09 | 2006-08-24 | Koken:Kk | Method and apparatus of detecting electrostatic type high-pressure synchronous phase |
| JP2008026089A (en) * | 2006-07-20 | 2008-02-07 | Hioki Ee Corp | Noncontact phase detection system |
| CN201018434Y (en) * | 2007-03-16 | 2008-02-06 | 张兆民 | Positive and negative pulse starter of multifunctional pumping unit |
| CN201345754Y (en) * | 2009-01-22 | 2009-11-11 | 镇江赛尔尼柯自动化有限公司 | Double-power input line switching device |
| CN201675396U (en) * | 2010-05-21 | 2010-12-22 | 福州锐达数码科技有限公司 | Fixed support for short-focus projection electronic whiteboard |
| CN201740824U (en) * | 2010-06-24 | 2011-02-09 | 武汉钢铁(集团)公司 | Device for calibrating phase sequence of bus bar in central high-voltage switchgear |
| CN201910580U (en) * | 2010-12-07 | 2011-07-27 | 中发电气股份有限公司 | Adjustable installation bracket in cabinet |
| CN201937193U (en) * | 2010-12-30 | 2011-08-17 | 徐州海伦哲专用车辆股份有限公司 | Mobile box-type transformer substation automobile with automatic phase-checking system |
| CN102495297A (en) * | 2011-12-09 | 2012-06-13 | 辽宁省电力有限公司沈阳供电公司 | Method for realizing phase check function by relay contact |
| CN102629740A (en) * | 2012-04-19 | 2012-08-08 | 辽宁省电力有限公司铁岭供电公司 | Nuclear phase handcart with adjustable width |
Non-Patent Citations (2)
| Title |
|---|
| （日）今井祥人: "《电火花加工——学以致用》", 31 January 2012 * |
| 林文孚: "《单元机组电气运行》", 31 March 2007 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698293A (en) * | 2013-12-06 | 2015-06-10 | 国网上海市电力公司 | Multipurpose three-phase test device |
| CN104698292A (en) * | 2013-12-06 | 2015-06-10 | 国网上海市电力公司 | Adjustable multipurpose three-phase test set |
| CN104698293B (en) * | 2013-12-06 | 2018-11-16 | 国网上海市电力公司 | A kind of multipurpose three-phase test device |
| CN105140811A (en) * | 2015-08-24 | 2015-12-09 | 国家电网公司 | Special vehicle for switch cabinet phase-detecting experiment |
| CN109599816A (en) * | 2019-01-14 | 2019-04-09 | 马可文 | A kind of power high voltage transmitting device |
| CN111487481A (en) * | 2020-05-08 | 2020-08-04 | 国网山东省电力公司滨州市沾化区供电公司 | Central nuclear phase trolley for switch cabinet and central switch cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102854405A (en) | Safe and efficient high-voltage nuclear phasing method | |
| CN202939885U (en) | Electrical measuring instrument simulation training apparatus | |
| CN202854255U (en) | Capacitor type potential transformer testing device | |
| CN104375112A (en) | Voltage transformer online verifying system based on SF6 parallel-plate capacitor | |
| CN108777089A (en) | A kind of correct errors with wiring connects electric training system with the dress table of fabrication evaluation | |
| CN208985418U (en) | Dress table connects electric Simulated training device | |
| CN107209216B (en) | Charge plate monitor and its application method | |
| CN206684228U (en) | A kind of high-voltage circuit-breaker switching on-off coil resistance universal test device | |
| CN102854467B (en) | Analog synchronization testing method for generator | |
| CN104794968B (en) | Low-voltage electric energy metering is installed and wiring analysis comprehensive training device | |
| CN207380211U (en) | A kind of device of detecting magnetic holding relays in batches | |
| CN105845007A (en) | Intelligent electric energy meter simulation application test stand and use method thereof | |
| CN203849294U (en) | Overhead line parameter measuring line connecting device | |
| CN209373017U (en) | A kind of rail traction substation low-voltage energization detection experimental rig | |
| CN205103298U (en) | Electric signal tester | |
| CN201757762U (en) | Circuit breaker tripping and closing voltage tester | |
| CN202870181U (en) | Multifunctional high-voltage debugging apparatus | |
| CN103954869B (en) | Cable power frequency parameter testing device based on PXI system | |
| CN207780219U (en) | A kind of voltage transformer no-load loss comprehensive tester | |
| CN203672976U (en) | Pilot frequency method ground resistor measuring device | |
| CN103605012B (en) | A kind of excitation system test trolley | |
| CN202548283U (en) | Integrated device for insulation test of insulating glove | |
| CN109283437A (en) | PT broken string and singlephase earth fault simulator and method | |
| CN209542759U (en) | Leader cable security parameter tester | |
| CN107633754A (en) | A kind of electrical practice training platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130102 |