CN203811662U - Power meter of high-voltage switch cabinet - Google Patents
Power meter of high-voltage switch cabinet Download PDFInfo
- Publication number
- CN203811662U CN203811662U CN201420245553.9U CN201420245553U CN203811662U CN 203811662 U CN203811662 U CN 203811662U CN 201420245553 U CN201420245553 U CN 201420245553U CN 203811662 U CN203811662 U CN 203811662U
- Authority
- CN
- China
- Prior art keywords
- switch cabinet
- tension switch
- back cover
- chute
- bar shaped
- 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
Links
Abstract
The utility model discloses the power meter of a high-voltage switch cabinet, which comprises an integrally rectangular meter body. The meter body is composed of a front shell and a rear shell. The front shell and the rear shell are detachably and fixedly connected together. The power meter is characterized in that the rear shell is provided with a conductive interlayer. The rear shell is inserted into a corresponding mounting hole in the door plate of the secondary chamber of the high-voltage switch cabinet. The periphery of the front shell is raised outwardly to be limited and exposed onto the door plate of the secondary chamber of the high-voltage switch cabinet. The power meter also comprises a fixing mechanism used for fixedly connecting the meter body with the door plate of the secondary chamber of the high-voltage switch cabinet. The power meter of the high-voltage switch cabinet has the advantages of simple and reasonable structure, wherein the influence of electromagnetic interference is relieved or even eliminated, and transformer output lines of all phases can be more conveniently connected. Meanwhile, the power meter is more convenient in installation and disassembly. Therefore, the efficiency of the maintenance work is facilitated to be improved.
Description
Technical field
The utility model belongs to electrical equipment field, is specifically related to a kind of electric instrument of high-tension switch cabinet.
Background technology
The Main Function of switch cubicle (switchgear) is in the process of generating, transmission of electricity, distribution and electric energy conversion in electric system; carry out folding, control and protection consumer, it is applicable to the various different occasions such as generating plant, transformer station, industrial enterprise and residential quarters.In switch cubicle, be typically provided with isolating switch (or disconnector or on-load switch), operating mechanism, mutual inductor and various protective devices etc.At present, for the sorting technique of switch cubicle, have a variety of, as being divided into withdraw-type switch cabinet and fixed switching cabinet by isolating switch mounting means; According to the difference of cabinet body structure, can be divided into metal closed switch cabinet and metal enclosed armoured switch cabinet; According to electric pressure difference, can be divided into high-tension switch cabinet again, Medium Voltage Switchgear and low-tension switch cabinet etc.
Wherein, above-mentioned high-tension switch cabinet is generally used for the electric pressure of AC3.6kV ~ 550kV, and the cable in this high-tension switch cabinet or bus can have current perturbation and produce larger electromagnetic radiation when transmission of electric energy simultaneously.In addition, at high-voltage switch gear, cashier's office in a shop with having, electric instrument carries out electric parameter measurement, the quality of power supply monitors and analyze and control protection device action.But the electric instrument of prior art is when reality is used, and the electronic devices and components in electric instrument subject to the interference of electromagnetic radiation, and then cause recording wrong parameters of electric power, when serious, even cause the misoperation of controlling protection equipment, cause serious consequence.In addition, in the process of installation high-voltage switch cubicle, (as shown in Figure 4) connection terminal of the connecting terminal block being connected with mutual inductor (voltage transformer (VT) is or/and current transformer) on electric instrument in prior art (insulating spacer 41 between connection terminal with prevention short circuit) is by turning the compressing tablet 7 being socketed on bolt 6 and bolt, each phase output line terminal 5 of voltage transformer (VT) three-phase to be pressed solidly on the conducting strip 42 of connection terminal, operate very loaded down with trivial details, and high-tension switch cabinet is the multiaspect being set up in parallel conventionally, so, also had influence on the installation effectiveness of high-tension switch cabinet.
For example, in prior art, notification number is the 202433426 U(days for announcing of CN: patent 2012.09.12) discloses a kind of three number of phases intelligence electric instruments, comprises back cover and fore shell, and fore shell is arranged on back cover; Fore shell has a window, and window place is provided with glass, and button is installed on fore shell; It is characterized in that: the two sides of back cover are provided with chute, the leading portion portion lower limb from chute that is positioned at chute is extended with card article to center respectively, is provided with the screw corresponding with runner position on the rear end face of back cover; In chute, be provided with hardware bracket, hardware bracket comprises connecting portion, the first fixed part being bent to form from connecting portion one end, the second fixed part being bent to form from the connecting portion other end, the overbending direction of the first fixed part and the second fixed part is contrary, the first fixed part is connected on fore shell, the second fixed part is provided with hole, by bolt, passes hole and screw is fixed on back cover.Above-mentioned three number of phases intelligence electric instruments, owing to being provided with hardware bracket, therefore, have improved the intensity and the reliability that connect.But when above-mentioned prior art three number of phases intelligence electric instruments are used in high-tension switch cabinet, equally also easily be subject to electromagnetic interference (EMI), in addition, also have the following disadvantages: in its structure, by hardware bracket, insert the chute of the back cover two sides of this electric instrument, rear employing bolt is connected and fixed the screw of hardware bracket and runner rear end, three number of phases intelligence electric instruments can be fixedly mounted on on the door-plate of high-tension switch cabinet secondary chamber, (high-tension switch cabinet secondary chamber controls transmission of electric energy loop in high-tension switch cabinet, regulate, the equipment installation room of protection and monitoring, it comprises electric instrument, Microcomputer Protection, Intelligent control device etc.), can find out, above-mentioned three number of phases intelligence electric instruments are fixed on the door-plate of high-tension switch cabinet secondary chamber, hardware bracket need to be inserted to rely on bolt to realize after chute fixing, equally comparatively loaded down with trivial details, especially when a plurality of high-voltage switch gears are installed electric instrument cashier's office in a shop, by the installation effectiveness that affects by a relatively large margin.
In a word, the electric instrument of the high-tension switch cabinet of prior art, the weak point having mainly contains: subject to electromagnetic interference (EMI); Comparatively loaded down with trivial details with the connection procedure of each phase output terminal of mutual inductor; While being fixedly installed in the door-plate of high-tension switch cabinet secondary chamber, work step is more, has limited the lifting of work efficiency.
Utility model content
For above-mentioned the deficiencies in the prior art, technical problem to be solved in the utility model is: how to provide a kind of rational in infrastructure, and primarily solve the problem of electromagnetic interference (EMI), next can make convenient with being connected of mutual inductor, finally also can make to mount and dismount the electric instrument of more convenient high-tension switch cabinet.
In order to solve the technical matters of above-mentioned electromagnetic interference (EMI), the utility model has adopted following technical scheme:
An electric instrument for high-tension switch cabinet, comprises the meter body of whole rectangular body, and described meter body includes fore shell and back cover, and described fore shell and back cover are detachably fixed together; It is characterized in that: described back cover has the interlayer of conduction; Described back cover is inserted on high-tension switch cabinet secondary chamber door-plate in mounting hole correspondingly, and the surrounding outwardly convex of described fore shell is also spacing and be exposed on high-tension switch cabinet secondary chamber door-plate; Also comprise the fixed mechanism that meter body is fixedly connected with high-tension switch cabinet secondary chamber door-plate.
The electric instrument of the utility model high-tension switch cabinet, during use, the back cover of meter body is inserted on high-tension switch cabinet secondary chamber door-plate in mounting hole correspondingly, and rely on the surrounding outwardly convex of fore shell spacing and be exposed on high-tension switch cabinet secondary chamber door-plate, being fixedly connected with meter body and high-tension switch cabinet secondary chamber door-plate by fixed mechanism.Because back cover has the interlayer of conduction, the interlayer of this conduction forms one deck electro-magnetic screen layer, thereby can absorb outside interference electromagnetic wave (mainly being produced when the transmission of electric energy by the cable in high-tension switch cabinet or bus), so can play the impact that reduces or avoid electromagnetic interference (EMI), and then improve the stable and reliability of electric instrument operation.In addition, also the interlayer that is back cover because of the electro-magnetic screen layer that forms in back cover, so, this interlayer can directly not contact and leak electricity with pcb board or the electronic devices and components of meter body inside, also there will not be maintainer because touching back cover outside surface causes situation about shocking by electricity, guaranteed the security that product is used.
Further, the electric instrument of this practical information also comprises that integral body is arc connecting terminal block fixture, and the two ends of described connecting terminal block fixture are connecting portion, and described connecting portion is fixedly connected with described back cover by bolt; On the middle part of described connecting terminal block fixture, be fixedly installed the boss extending toward each connection terminal direction, the top of described boss is also provided with the C clamp gripping member that has elasticity and can conduct electricity, the clamping firmly phase output line terminal of mutual inductor of this C clamp gripping member, and the openend of this C clamp gripping member is connected on the conducting strip of connection terminal.
Implement after technique scheme, when the output line terminal of mutual inductor is connected with connection terminal correspondingly on electric instrument, first by the clamping firmly mutual inductor one phase output line terminal (mutual inductor has ABC three-phase output line terminal conventionally) of the C clamp gripping member on connecting terminal block fixture, subsequently connecting terminal block fixture is fixed on back cover, now the openend of this C clamp gripping member is connected on the conducting strip of connection terminal, because C clamp gripping member can be conducted electricity, historical facts or anecdotes has showed being electrically connected to of each phase output line terminal of mutual inductor and the conducting strip of connection terminal, visible, when electric instrument of the present utility model is connected with each phase output line terminal of mutual inductor, not only convenient and swift, also there is equally reliability, can help to increase work efficiency.
Further, described fixed mechanism is included in horizontally set chute on described back cover two sides, the upper end, both sides of described chute has the flange that extends internally and form, in rear end lower surface on described chute, have many right angle tooth bars are vertically set side by side, and the slope of described right angle tooth bar is to be tilted obliquely by (with Fang Wei the place ahead, fore shell place, Fang Wei rear, back cover place) after forward direction; Described fixed mechanism also comprises having flexible bar shaped holding firmware; Described bar shaped holding firmware inserts in described chute, the front end of this bar shaped holding firmware has the projection that stretches out described chute, the rear end of this bar shaped holding firmware deviates from the surface of described projection and has described many right angle tooth bars, and described bar shaped holding firmware and described chute connect and fix by both right angle tooth bar.
Implement after technique scheme, because chute and bar shaped holding firmware have many corresponding right angle tooth bars, and the slope of described right angle tooth bar is inclined upwardly for being retreaded by forward direction, so can make bar shaped firmware, can inwardly pass extremely fixedly limit point by chute, and the vertical plane of the right angle tooth bar by chute and bar shaped holding firmware is realized and being connected and fixed, thereby electric instrument is stabilized on secondary chamber's door-plate of high-tension switch cabinet, saved and in prior art, needed the trouble that constantly tights a bolt, convenient and swift, in addition, when needs overhaul or change this electric instrument, only need lift bar shaped holding firmware rear end, tooth bar and the tooth bar on chute on bar shaped holding firmware are departed from, bar shaped holding firmware can be taken out from chute, and then take off very easily this electric instrument.
Compared with prior art, the electric instrument of high-tension switch cabinet of the present utility model, have advantages of simple and reasonable, not only can reduce or avoid the impact of electromagnetic interference (EMI), can also make convenient with being connected of each phase output line terminal of mutual inductor, and the installation and removal that also can make instrument get up more conveniently, help to improve or the efficiency of service work.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electric instrument of the utility model high-tension switch cabinet.
Fig. 2 is that the back cover of electric instrument of the utility model high-tension switch cabinet is along A-A cut-open view in Fig. 2.
Fig. 3 is that the B of bar shaped holding firmware of electric instrument of the utility model high-tension switch cabinet is to view.
Fig. 4 is that the structural representation of direction is overlooked in connecting terminal block and the mutual inductor output line terminal junction of the electric instrument of prior art.
Fig. 5 is that the structural representation of direction is overlooked in connecting terminal block and the mutual inductor output line terminal junction of the electric instrument of the utility model high-tension switch cabinet.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
During concrete enforcement: as shown in Figures 1 to 5, a kind of electric instrument of high-tension switch cabinet, comprises the meter body of whole rectangular body, and described meter body includes fore shell 1 and back cover 2, and described fore shell 1 and back cover 2 are detachably fixed together; Described back cover 2 has the interlayer 24 of conduction; Described back cover 2 is inserted in high-tension switch cabinet secondary chamber door-plate (not shown) in mounting hole correspondingly, and the surrounding outwardly convex of described fore shell 1 is also spacing and be exposed on high-tension switch cabinet secondary chamber door-plate; Also comprise the fixed mechanism that meter body is fixedly connected with high-tension switch cabinet secondary chamber door-plate.During concrete enforcement, the interlayer 24 of described conduction can be made by copper or aluminium or stainless steel material, can be also one deck conductive paint.And when implementing, also this interlayer 24 can be electrically connected to (Huo Yu high-tension switch cabinet secondary chamber door-plate is electrically connected to) with ground wire, thereby further avoid electric leakage to cause human electric shock's situation to occur, the security of controlling that improves this electric instrument.It is fixing that described fixed mechanism can adopt the mode of bolt or fixing glue to realize.
The electric instrument of the high-tension switch cabinet that this embodiment relates to, during use, the back cover 2 of meter body is inserted on high-tension switch cabinet secondary chamber door-plate in mounting hole correspondingly, and rely on the surrounding outwardly convex of fore shell 1 spacing and be exposed on high-tension switch cabinet secondary chamber door-plate, being fixedly connected with meter body and high-tension switch cabinet secondary chamber door-plate by fixed mechanism.Because back cover 2 has the interlayer 24 of conduction, the interlayer 24 of this conduction forms one deck electro-magnetic screen layer, thereby can absorb outside interference electromagnetic wave (mainly being produced when the transmission of electric energy by the cable in high-tension switch cabinet or bus), so can play the impact that reduces or avoid electromagnetic interference (EMI), and then improve the stable and reliability of this electric instrument operation.In addition, also because the electro-magnetic screen layer forming in back cover 2 is the interlayer 24 of back cover 2, so, this interlayer 24 can directly not contact and leak electricity with pcb board or the electronic devices and components of meter body inside, also there will not be maintainer because touching back cover 2 outside surfaces cause situation about shocking by electricity, guaranteed the security that product is used.
The electric instrument that this embodiment relates to also comprises that integral body is arc connecting terminal block fixture 9, and the two ends of described connecting terminal block fixture 9 are connecting portion 92, and described connecting portion 92 is fixedly connected with described back cover 2 by bolt 6; On the middle part of described connecting terminal block fixture 9, be fixedly installed the boss 91 extending toward each connection terminal direction, the top of described boss 91 is also provided with the C clamp gripping member 93 that has elasticity and can conduct electricity, the clamping firmly phase output line terminal 5 of mutual inductor of this C clamp gripping member 93, and the openend of this C clamp gripping member 93 is connected on the conducting strip 42 of connection terminal.During concrete enforcement, described boss 91 can like this, when can play insulating effect, provide the openend of elastic force to C clamp gripping member 93 by for elastic caoutchouc makes, thereby makes the more reliable butt power transmission of conducting strip 42 of itself and connection terminal.
When the output line terminal of mutual inductor 5 is connected with connection terminal correspondingly on electric instrument, first by the clamping firmly mutual inductor one phase output line terminal 5(mutual inductor of the C clamp gripping member 93 on connecting terminal block fixture 9, conventionally there is ABC three-phase output line terminal 5), subsequently connecting terminal block fixture 9 is fixed on back cover 2, now the openend of this C clamp gripping member 93 is connected on the conducting strip 42 of connection terminal, because C clamp gripping member 93 can be conducted electricity, historical facts or anecdotes has showed being electrically connected to of each phase output line terminal 5 of mutual inductor and the conducting strip 42 of connection terminal, visible, when electric instrument of the present utility model is connected with each phase output line terminal of mutual inductor, not only convenient and swift, also there is equally reliability, can help to increase work efficiency.
Described fixed mechanism is included in horizontally set chute 21 on described back cover 2 two sides, the upper end, both sides of described chute 21 has the flange 23 that extends internally and form, in rear end lower surface on described chute 21, have many right angle tooth bars 22 are vertically set side by side, and the slope of described right angle tooth bar 22 is inclined upwardly for being retreaded by forward direction; Described fixed mechanism also comprises having flexible bar shaped holding firmware 3; Described bar shaped holding firmware 3 inserts in described chute 21, the front end of this bar shaped holding firmware 3 has the projection 31 that stretches out described chute 21, the rear end of this bar shaped holding firmware 3 deviates from the surface of described projection 31 and has described many right angle tooth bars 32, and described bar shaped holding firmware 3 connects and fixes with the right angle tooth bar (22,32) of described chute 21 by both.During concrete enforcement, the chute 21 on back cover 2 two sides and bar shaped holding firmware 3 can be many groups, and then help to improve the stable degree of electric instrument and high-tension switch cabinet secondary chamber door-plate.
Because chute 21 and bar shaped holding firmware 3 have many corresponding right angle tooth bars 22, and the slope of described right angle tooth bar 22 is inclined upwardly for being retreaded by forward direction, so can make bar shaped firmware, can inwardly pass extremely fixedly limit point by chute 21, and realize and connecting and fixing by the vertical plane of both right angle tooth bars 22 of chute 21 and bar shaped holding firmware 3, thereby electric instrument is stabilized on secondary chamber's door-plate of high-tension switch cabinet, saved and in prior art, needed the trouble that constantly tights a bolt, convenient and swift, in addition, when needs overhaul or change this electric instrument, only need lift bar shaped holding firmware 3 rear ends, tooth bar on bar shaped holding firmware 3 and the right angle tooth bar on chute 21 are departed from, bar shaped holding firmware 3 can be taken out from chute 21, and then take off very easily this electric instrument.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, above-mentioned embodiment is preferred forms of the present utility model, but the utility model is not limited to above-mentioned embodiment.In the ken that one skilled in the relevant art possesses, in all the utility model structures, be equal to replacement and all can be considered infringement of the present utility model.
Claims (3)
1. an electric instrument for high-tension switch cabinet, comprises the meter body of whole rectangular body, and described meter body includes fore shell and back cover, and described fore shell and back cover are detachably fixed together; It is characterized in that: described back cover has the interlayer of conduction; Described back cover is inserted on high-tension switch cabinet secondary chamber door-plate in mounting hole correspondingly, and the surrounding outwardly convex of described fore shell is also spacing and be exposed on high-tension switch cabinet secondary chamber door-plate; Also comprise the fixed mechanism that meter body is fixedly connected with high-tension switch cabinet secondary chamber door-plate.
2. the electric instrument of high-tension switch cabinet according to claim 1, it is characterized in that: also comprise that integral body is arc connecting terminal block fixture, the two ends of described connecting terminal block fixture are connecting portion, and described connecting portion is fixedly connected with described back cover by bolt; On the middle part of described connecting terminal block fixture, be fixedly installed the boss extending toward each connection terminal direction, the top of described boss is also provided with the C clamp gripping member that has elasticity and can conduct electricity, the clamping firmly phase output line terminal of mutual inductor of this C clamp gripping member, and the openend of this C clamp gripping member is connected on the conducting strip of connection terminal.
3. the electric instrument of high-tension switch cabinet according to claim 1, it is characterized in that: described fixed mechanism is included in horizontally set chute on described back cover two sides, the upper end, both sides of described chute has the flange that extends internally and form, in rear end lower surface on described chute, have many right angle tooth bars are vertically set side by side, and the slope of described right angle tooth bar is inclined upwardly for being retreaded by forward direction; Described fixed mechanism also comprises having flexible bar shaped holding firmware; Described bar shaped holding firmware inserts in described chute, the front end of this bar shaped holding firmware has the projection that stretches out described chute, the rear end of this bar shaped holding firmware deviates from the surface of described projection and has described many right angle tooth bars, and described bar shaped holding firmware and described chute connect and fix by both right angle tooth bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245553.9U CN203811662U (en) | 2014-05-14 | 2014-05-14 | Power meter of high-voltage switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245553.9U CN203811662U (en) | 2014-05-14 | 2014-05-14 | Power meter of high-voltage switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811662U true CN203811662U (en) | 2014-09-03 |
Family
ID=51450395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420245553.9U Expired - Fee Related CN203811662U (en) | 2014-05-14 | 2014-05-14 | Power meter of high-voltage switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811662U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785078A (en) * | 2016-05-07 | 2016-07-20 | 张舒维 | Intelligent electric instrument employing zigbee technology |
| CN107833811A (en) * | 2017-12-01 | 2018-03-23 | 江苏创能电器有限公司 | A kind of moulded case circuit breaker |
| CN109219286A (en) * | 2018-08-23 | 2019-01-15 | 芜湖凯兴汽车电子有限公司 | A kind of thermal diffusivity electric meter |
| CN110246660A (en) * | 2019-07-30 | 2019-09-17 | 国家电网有限公司 | A kind of mutual inductor protective housing |
| CN111337721A (en) * | 2018-12-18 | 2020-06-26 | 艾能特（苏州）能源技术有限公司 | Guide rail type three-phase multifunctional electric power instrument |
-
2014
- 2014-05-14 CN CN201420245553.9U patent/CN203811662U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785078A (en) * | 2016-05-07 | 2016-07-20 | 张舒维 | Intelligent electric instrument employing zigbee technology |
| CN105785078B (en) * | 2016-05-07 | 2018-07-10 | 秦皇岛讯飞电子科技有限公司 | A kind of intelligent electric instrument using Zigbee-technology |
| CN107833811A (en) * | 2017-12-01 | 2018-03-23 | 江苏创能电器有限公司 | A kind of moulded case circuit breaker |
| CN109219286A (en) * | 2018-08-23 | 2019-01-15 | 芜湖凯兴汽车电子有限公司 | A kind of thermal diffusivity electric meter |
| CN111337721A (en) * | 2018-12-18 | 2020-06-26 | 艾能特（苏州）能源技术有限公司 | Guide rail type three-phase multifunctional electric power instrument |
| CN110246660A (en) * | 2019-07-30 | 2019-09-17 | 国家电网有限公司 | A kind of mutual inductor protective housing |
| CN110246660B (en) * | 2019-07-30 | 2024-03-22 | 国家电网有限公司 | Mutual inductor protective box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203811662U (en) | Power meter of high-voltage switch cabinet | |
| CN201674151U (en) | Central-positioned metallic armoured switch cabinet | |
| CN204424732U (en) | A kind of high voltage power distributing cabinet changing current transformer position | |
| CN104734031A (en) | Power distribution cabinet special for low-voltage distribution system | |
| CN203301007U (en) | Compact high-voltage switch cabinet safety protection device | |
| CN202978015U (en) | Network intelligent power distribution cabinet | |
| CN207398378U (en) | A kind of bus adaption device for breaker | |
| CN201717624U (en) | Outdoor lightning arrester for AC power supply | |
| CN204517181U (en) | Complete LV intelligent switching system switch cubicle | |
| CN109412070A (en) | A kind of uninterrupted operation device and uninterrupted operation method based on 0.4 kilovolt | |
| CN203150939U (en) | A high-voltage switch cabinet | |
| CN204515499U (en) | For the data acquisition control module of LV intelligent switching system | |
| CN205565306U (en) | Novel distribution cabinet | |
| CN216699150U (en) | Switch cabinet convenient to install | |
| CN210806461U (en) | Distribution box applied to equipment cabinet | |
| CN216529853U (en) | Distribution adjusting device for distribution of control cabinet | |
| CN208970947U (en) | A kind of high-tension switch cabinet | |
| CN203445428U (en) | High-voltage switch cabinet with positions of current transformer and grounding switch changed | |
| CN215578334U (en) | Fixing structure for mounting single-chip high-voltage isolating switch | |
| CN214669309U (en) | Automatic nuclear phase device suitable for transformer substation | |
| CN210723805U (en) | Control cabinet for electromechanical engineering | |
| CN210201316U (en) | Indoor alternating-current high-voltage metal armored movable switch equipment | |
| CN218768911U (en) | Insulation protection assembly of electric energy metering box | |
| CN219760331U (en) | Three-phase overvoltage protection device of arc extinction cabinet | |
| CN105790091A (en) | Novel power distribution cabinet |
Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20180514 |