CN109494493B - Direct-current power supply tapping terminal strip and tapping method - Google Patents
Direct-current power supply tapping terminal strip and tapping method Download PDFInfo
- Publication number
- CN109494493B CN109494493B CN201811613657.XA CN201811613657A CN109494493B CN 109494493 B CN109494493 B CN 109494493B CN 201811613657 A CN201811613657 A CN 201811613657A CN 109494493 B CN109494493 B CN 109494493B
- Authority
- CN
- China
- Prior art keywords
- copper
- terminal
- power supply
- direct current
- negative electrode
- 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.)
- Active
Links
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 92
- 229910052802 copper Inorganic materials 0.000 claims description 92
- 239000010949 copper Substances 0.000 claims description 92
- 238000002788 crimping Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011426 transformation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/28—Terminal boards
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/32—End pieces with two or more terminations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
Abstract
The invention discloses a direct current power supply tapping terminal strip and a tapping method, which belong to the technical field of power supply application. The direct current power supply tapping terminal strip and the tapping method enable a plurality of secondary devices in the power screen cabinet to share the direct current power supply, reduce the laying and using amount of the direct current cable and save investment cost; the efficiency of cable operation maintenance is improved, the economic nature and the security of transformer substation have been improved.
Description
Technical Field
The invention relates to the technical field of power supply application, in particular to a direct-current power supply tapping terminal strip and a tapping method.
Background
The normal operation of electrical secondary equipment such as transformer substation relay protection and an automation system requires the in-station direct current power supply to provide power supply guarantee. In the transformer substation, the electric secondary equipment is arranged in a screen combination mode according to an electric interval, for example, a protection device, a measurement and control device, an electric energy meter and a switch in a 110kV line interval are combined into a screen cabinet. The screen assembly mode improves the space utilization rate of the secondary screen cabinet in the transformer substation. However, each device in the screen cabinet needs direct current power supply, so that too many direct current cables are laid, the coil wire is complicated, maintenance personnel are not facilitated to overhaul and maintain the direct current cables, meanwhile, fire accidents are easily caused by accumulation of too many cables, and hidden danger is brought to safe and stable operation of the transformer substation.
The publication number CN 105576528B discloses an ac/dc power supply switching box and a comprehensive self-transformation method, wherein the ac/dc power supply switching box comprises: the control main power supply switching part comprises a multipath control power supply inlet wire interface, a multipath control power supply outlet wire interface and a first terminal row used for connecting the multipath control power supply inlet wire interface and the multipath control power supply outlet wire interface, and is used for providing a switching interface between a switch cabinet screen top control main power supply small bus wire inlet cable and an integrated power supply screen control power supply outlet wire cable. In the comprehensive transformation project of the transformer substation, the integrated power supply screen installation and replacement work can be completed by utilizing the AC/DC power supply transfer box on the premise that the switch cabinet is not powered off, so that the power failure times of equipment in the transformation project are reduced, the construction flow is optimized, the repeated labor is reduced, and the construction efficiency is improved.
The publication number CN 207677503U discloses a 24-volt direct current power supply device of an automatic control cabinet of a power plant, which comprises a power input air switch, a 24-volt direct current power supply module and a power distribution plate, wherein the power distribution plate distributes and monitors two paths of 24-volt direct current main power supplies and two paths of 24-volt direct current standby power supplies, the two paths of 24-volt direct current main power supplies are short-circuited at the negative end and then are connected to a terminal block through a distribution plate circuit, and a path of 24-volt fan power supply is output after the two paths of 24-volt direct current main power supplies are connected in parallel through a diode; two 24-volt direct-current standby power supplies are connected in parallel through breakdown diodes and then output a 24-volt auxiliary power supply; when a certain 24V direct current power supply is powered off, the power distribution plate monitors the action of the terminal node and outputs a power failure alarm signal. Although the power supply device can uninterruptedly output 24V DC power after the single 220V AC power is powered off, the automatic control cabinet is ensured not to be powered off, and a power failure alarm signal contact can be output, so that a user can find and process a power failure fault in time. However, the direct current power supply directly supplies power to the power supply device, so that the investment cost of the cable is relatively high, the power supply device is relatively large, and the operation and maintenance are inconvenient.
Disclosure of Invention
In view of the above, the invention aims to provide a direct current power supply tapping terminal strip and a tapping method, which are beneficial to operation and maintenance, can reduce the cable laying amount and save the cable investment, aiming at the defects of the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a DC power supply tapping terminal bar, DC power supply is connected with the terminal bar through DC cable, the terminal bar includes insulating panel, copper terminal, copper short circuit piece and crimping piece, copper terminal figure is a plurality of, and the positive pole district includes a plurality of copper terminal, the negative pole district includes a plurality of copper terminal, the positive pole district with the negative pole district is separated through insulating baffle, every copper terminal is embedded in the insulating panel, adjacent two copper terminal passes through the short circuit piece with crimping piece communicates and fixes.
Further, the direct current cable comprises an anode cable core and a cathode cable core, wherein the copper terminal of the anode region is connected with the anode cable core, and the copper terminal of the cathode region is connected with the cathode cable core.
Further, the copper terminal is in a round threaded column shape, and the copper terminal is made of copper.
Further, the copper short-circuit piece is elliptical in shape, through holes are formed in two ends of the copper short-circuit piece, the copper terminals penetrate through the through holes, and threads are arranged on the copper terminals.
Further, the crimping piece is a nut, and the nut and the copper terminal are correspondingly connected through threads.
Further, the copper terminal of the positive electrode region and the copper terminal of the negative electrode region are respectively connected with an air switch correspondingly.
A tapping method of a direct current power supply tapping terminal strip comprises the following steps:
step 1: the power input end of the secondary equipment in the electric screen cabinet is respectively connected with one end of an air switch in the screen cabinet through a short lead, and one secondary equipment corresponds to one air switch;
step 2: connecting a direct current power supply outside the electric screen cabinet to any two copper terminals in the regions of the positive electrode region and the negative electrode region of the terminal block through a direct current cable, connecting the copper terminal of the positive electrode region with a positive electrode cable core, connecting the copper terminal of the negative electrode region with a negative electrode cable core, and compacting and fixing the copper terminal and the cable core through a compression joint piece;
step 3: and the other end of the air switch is connected with copper terminals of the positive electrode area and the negative electrode area of the terminal strip, so that the equipotential of the secondary equipment at the air switch is ensured.
The beneficial effects of the invention are as follows:
1. the invention provides a direct-current power supply tapping terminal strip and a tapping method, wherein a plurality of secondary devices in a screen cabinet can share a direct-current power supply, one screen cabinet in a transformer substation only needs to be connected with one direct-current cable, the phenomenon of multi-cable stacking in the traditional screen cabinet is avoided, the risk of fire caused by cable heating is reduced, the running safety of the devices is improved, and the running and maintenance of the transformer substation can be concise and efficient.
2. The invention provides a direct current power supply tapping terminal strip and a tapping method, wherein copper terminals of a positive electrode area and a negative electrode area are communicated and fixed through a short connection piece and a press connection piece, through the terminal short connection mode, the short connection terminals in the terminal strip have equipotential, a power input end of secondary equipment in an electric screen cabinet is respectively connected with one end of an air switch in the screen cabinet through a short lead, one secondary equipment corresponds to one air switch, the device is convenient to withdraw and put into operation, and the upper ports of the air switches corresponding to the secondary equipment have equipotential.
3. The invention provides a direct current power supply tapping terminal strip and a tapping method, wherein a direct current power supply is connected with the terminal strip through a direct current cable, a copper terminal is divided into a positive electrode area and a negative electrode area, the positive electrode area is connected with a positive electrode of the power supply, the negative electrode area is connected with a negative electrode of the power supply, the space utilization rate of a secondary screen cabinet in a transformer substation is improved, the use amount of the direct current cable is reduced, the construction investment cost of the transformer substation is saved, the purposes of reducing the cable laying and the use amount are achieved, the workload of a construction unit cable laying is reduced, and the construction period of the transformer substation is shortened. Meanwhile, the efficiency of cable operation, maintenance and overhaul is improved, and the economical efficiency and the safety of the transformer substation are improved.
Drawings
Fig. 1 is a schematic structural view of a dc power supply tap terminal block according to the present invention;
FIG. 2 is a schematic diagram of the connection of an insulated panel and copper terminals of the present invention;
FIG. 3 is a schematic view of the structure of the copper shorting tab of the present invention;
FIG. 4 is a schematic structural view of a crimp member according to the present invention;
fig. 5 is a schematic diagram of a dc power supply circuit of a secondary device according to the present invention.
Reference numerals:
1. the terminal strip, 2, copper terminal, 3, copper short tab, 4, crimping spare, 5, insulating panel, 6, DC cable, 7, insulating baffle, 8, through-hole, 9, air switch lower opening, 10, secondary equipment, 11, air switch upper opening.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
Example 1
As shown in fig. 1, a dc power supply tapping terminal strip is connected to a terminal strip 1 by a dc cable 6, the terminal strip 1 includes an insulating panel 5, copper terminals 2, copper shorting tabs 3 and crimping members 4, the number of the copper terminals 2 is plural, and the copper terminals 2 are labeled "1,2 … …, n" in an arabic number ascending order.
Wherein: the copper terminals 2 are set as positive electrode areas, and the positive electrodes of the direct current power supply are connected in future; in addition, a plurality of copper terminals are set as negative electrode areas, negative electrodes of a direct current power supply are connected in future, and the number of the copper terminal marks is related to the number of secondary devices which need to be powered by the direct current power supply in the electric screen cabinet.
Example 2
As shown in fig. 2, 3 and 4, example 2 is a modification of example 1, and differs from example 1 in that: the positive electrode region and the negative electrode region are separated and insulated through an insulating baffle 7, each copper terminal 2 is embedded in the insulating panel 5, and two adjacent copper terminals 2 are communicated and fixed through the copper shorting tab 3 and the crimping piece 4.
Wherein: the shape of copper short circuit piece 3 is oval, the both ends of copper short circuit piece 3 are equipped with through-hole 8, and the material of copper short circuit piece 3 is copper, copper terminal 2 shape is circular screw thread post, copper terminal's material is copper. The copper terminal 2 is provided with threads. The copper terminal 2 and the copper short-circuit sheet 3 are connected in the following manner: copper terminal 2 inserts through-hole 8 runs through-hole 8 to communicate copper terminal 2 and copper short tab 3, crimping piece 4 is the nut, the nut with copper terminal 2 corresponds the connection through the screw thread, crimping piece 4 through the screw thread of nut inside with copper terminal 2's screw thread carries out threaded connection, fixes copper terminal 2.
The direct current power supply is connected to any one of the copper terminals in the regions of the positive electrode region and the negative electrode region of the terminal block through a direct current cable 6, and is pressed and fixed through the pressing member 4. The direct-current cable comprises two cable cores, namely a positive cable core and a negative cable core, wherein the copper terminal of the positive region is connected with the positive cable core, and the copper terminal of the negative region is connected with the negative cable core. By this terminal connection, the copper terminals in the terminal row are made equipotential. A screen cabinet in the transformer substation only needs to be connected with a direct current cable, so that the phenomenon of multi-cable stacking in the screen cabinet in the past is avoided, the risk of fire caused by heating of the cable is reduced, the safety of equipment operation is improved, and the operation and maintenance of the transformer substation can be concise and efficient.
Example 3
As shown in fig. 5, example 3 is a modification of example 2, and differs from example 2 in that:
the copper terminal of the positive electrode area and the copper terminal of the negative electrode area are respectively and correspondingly connected with air switches, and the power input end of each electric secondary device in the electric power screen cabinet is connected to each air switch in the screen cabinet through a short lead. One secondary device 10 corresponds to an air switch, so that the secondary device can be conveniently withdrawn and put into operation, the lower opening 9 of each air switch is correspondingly connected to the power input end of the secondary device, and the upper opening 11 of each air switch is connected to the copper terminal 2 of the positive electrode area and the negative electrode area on the terminal row. In this way, the upper port 11 of the secondary air switch is made equipotential.
Example 4
Example 4 is a modification of example 3, differing from example 3 in that:
a tapping method of a direct current power supply tapping terminal strip comprises the following steps:
step 1: the power input end of the secondary equipment in the electric screen cabinet is respectively connected with one end of a lower port 9 of an air switch in the screen cabinet through a short lead, and one secondary equipment corresponds to one air switch;
step 2: connecting a direct current power supply outside the electric screen cabinet to any two copper terminals in the regions of the positive electrode region and the negative electrode region of the terminal block through a direct current cable, connecting the copper terminal of the positive electrode region with a positive electrode cable core, connecting the copper terminal of the negative electrode region with a negative electrode cable core, and compacting and fixing the copper terminal and the cable core through a compression joint piece;
step 3: the other end upper port of the air switch is connected with copper terminals of the positive electrode area and the negative electrode area of the terminal strip, so that the equipotential of the secondary equipment at the air switch upper port 11 is ensured.
Finally, it is noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and that other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solution of the present invention.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A tapping method of a direct current power supply tapping terminal strip is characterized in that: the method comprises the following steps:
step 1: the power input end of the secondary equipment in the electric screen cabinet is respectively connected with one end of an air switch in the screen cabinet through a short lead, and one secondary equipment corresponds to one air switch;
step 2: connecting a direct current power supply outside the electric screen cabinet to any two copper terminals in the regions of the positive electrode region and the negative electrode region of the terminal block through a direct current cable, connecting the copper terminal of the positive electrode region with a positive electrode cable core, connecting the copper terminal of the negative electrode region with a negative electrode cable core, and compacting and fixing the copper terminal and the cable core through a compression joint piece;
step 3: the other end of the air switch is connected with copper terminals of the positive electrode area and the negative electrode area of the terminal strip, so that the equipotential of the secondary equipment at the air switch is ensured;
the direct-current power supply is connected with a terminal strip through a direct-current cable, the terminal strip comprises an insulating panel, copper terminals, copper short-circuit pieces and crimping pieces, the number of the copper terminals is multiple, a positive electrode area comprises a plurality of the copper terminals, a negative electrode area comprises a plurality of the copper terminals, the positive electrode area and the negative electrode area are separated through insulating baffles, each copper terminal is embedded in the insulating panel, and two adjacent copper terminals are communicated and fixed through the copper short-circuit pieces and the crimping pieces; the direct current cable comprises a positive cable core and a negative cable core, the copper terminal of the positive electrode area is connected with the positive cable core, and the copper terminal of the negative electrode area is connected with the negative cable core; the copper terminal is in a round threaded column shape, and is made of copper; the copper short-circuit piece is elliptical in shape, through holes are formed in two ends of the copper short-circuit piece, the copper terminals penetrate through the through holes, and threads are arranged on the copper terminals; the crimping piece is a nut, and the nut and the copper terminal are correspondingly connected through threads; the copper terminal of the positive electrode region and the copper terminal of the negative electrode region are respectively connected with an air switch correspondingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613657.XA CN109494493B (en) | 2018-12-27 | 2018-12-27 | Direct-current power supply tapping terminal strip and tapping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613657.XA CN109494493B (en) | 2018-12-27 | 2018-12-27 | Direct-current power supply tapping terminal strip and tapping method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109494493A CN109494493A (en) | 2019-03-19 |
| CN109494493B true CN109494493B (en) | 2024-04-05 |
Family
ID=65712606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811613657.XA Active CN109494493B (en) | 2018-12-27 | 2018-12-27 | Direct-current power supply tapping terminal strip and tapping method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109494493B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003217706A (en) * | 2002-01-18 | 2003-07-31 | Mitsubishi Electric Corp | Terminal block |
| KR200390316Y1 (en) * | 2005-04-21 | 2005-07-21 | 배광호 | Relay terminal blocks |
| JP2008071518A (en) * | 2006-09-12 | 2008-03-27 | Chugoku Electric Power Co Inc:The | Short-circuiting device of terminal block |
| CN105680345A (en) * | 2016-04-01 | 2016-06-15 | 许继集团有限公司 | Front patch panel cabinet |
| CN209045795U (en) * | 2018-12-27 | 2019-06-28 | 国家电网有限公司 | A kind of DC power supply tap terminals row |
-
2018
- 2018-12-27 CN CN201811613657.XA patent/CN109494493B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003217706A (en) * | 2002-01-18 | 2003-07-31 | Mitsubishi Electric Corp | Terminal block |
| KR200390316Y1 (en) * | 2005-04-21 | 2005-07-21 | 배광호 | Relay terminal blocks |
| JP2008071518A (en) * | 2006-09-12 | 2008-03-27 | Chugoku Electric Power Co Inc:The | Short-circuiting device of terminal block |
| CN105680345A (en) * | 2016-04-01 | 2016-06-15 | 许继集团有限公司 | Front patch panel cabinet |
| CN209045795U (en) * | 2018-12-27 | 2019-06-28 | 国家电网有限公司 | A kind of DC power supply tap terminals row |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109494493A (en) | 2019-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203504285U (en) | UPS integrated power supply | |
| CN204349309U (en) | Photovoltaic inversion boosting integrated box type transformer station | |
| CN109494493B (en) | Direct-current power supply tapping terminal strip and tapping method | |
| CN202949138U (en) | Low-voltage cable branch box | |
| CN202749891U (en) | Alternating current-direct current integrated power supply apparatus | |
| CN110518479B (en) | 66kV voltage level wind power generation Fahrenheit boost transformer substation | |
| CN209045795U (en) | A kind of DC power supply tap terminals row | |
| CN200974869Y (en) | Aluminum cell power-on grooving diverter | |
| CN208638279U (en) | A kind of economic and reliable switching generator output device | |
| CN203895633U (en) | Short circuit grounding wire suitable for box transformer substation and electricity distribution room | |
| CN205017101U (en) | Switching -on device is divided in a distant place | |
| CN209692626U (en) | Inverter bottom of cabinet bulk T shape bus rod device and inverter cabinet | |
| CN216489067U (en) | Tower machine high voltage power supply system | |
| CN208257142U (en) | A kind of control cabinet | |
| CN202703324U (en) | Electrified railway traction power supply outdoor device | |
| CN204669226U (en) | A kind of intelligent adjustable DC power supply based on CAN | |
| CN217009396U (en) | Can take out formula of inserting lithium cell energy storage system modularization group battery | |
| CN216648904U (en) | 50MW 35kV new forms of energy switch station system | |
| CN214478782U (en) | Dedicated data acquisition device of photovoltaic power generation grid-connected | |
| CN203119314U (en) | Inverter cabinet for grid-connection photovoltaic power generation system | |
| CN204205293U (en) | A kind of high efficiency and heat radiation low-voltage electrical cabinet for indoor | |
| CN217848771U (en) | Novel intelligent box transformer | |
| CN203406674U (en) | Intelligent supervising device used for low-voltage distribution transformer | |
| CN203574282U (en) | Indoor AC metal armored removable switching equipment | |
| CN202260615U (en) | High-reliability dual-power incoming line structure of transformer cooling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |