CN106785730A - A kind of on-load tap changers of transformers temporary source termination - Google Patents
A kind of on-load tap changers of transformers temporary source termination Download PDFInfo
- Publication number
- CN106785730A CN106785730A CN201710031981.XA CN201710031981A CN106785730A CN 106785730 A CN106785730 A CN 106785730A CN 201710031981 A CN201710031981 A CN 201710031981A CN 106785730 A CN106785730 A CN 106785730A
- Authority
- CN
- China
- Prior art keywords
- phase
- casing
- transformers
- load tap
- tap changers
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/72—Means for accommodating flexible lead within the holder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention provides a kind of on-load tap changers of transformers temporary source termination, including casing and the cable hank with three-phase socket being located in casing；The wheel disc is provided with handle, and the handle is located at outside casing, and one end is fixed on wheel disc；The cable wound on cable hank wheel disc is three-phase four core cable line；The roof insulating panel of casing is provided with four out-put supply binding posts；The core plug of three-phase four for being used cooperatively with above-mentioned three-phase socket is provided with casing；Four out-put supply binding posts are electrically connected to the corresponding leading-out terminal of the core plug of three-phase four；The side wall of casing is provided with operation door.Three in four out-put supply binding posts to connect and be provided with the first controlling switch between terminal and the core plug of above-mentioned three-phase four.The end of incoming cables of the first controlling switch is equipped with an at least single-phase socket and/at least one pair of single-phase binding post.The present invention can not only reduce the labour intensity of testing crew, improve the test efficiency of testing crew, moreover it is possible to improve the convenience of field wiring.
Description
Technical field
The present invention relates to transformer-supplied field, specifically a kind of on-load tap changers of transformers temporary source wiring dress
Put.
Background technology
Load ratio bridging switch is the unique motion part being connected with transformer circuit, is carrying out main transformer D.C. resistance survey
During examination, need motorized adjustment load ratio bridging switch to complete the D.C. resistance test of all tap positions of transformer.But part power transformation
Stand an only main transformer, when the main transformer has a power failure, stand in lose AC power, can only by temporary source, such as three
Cross streams generator temporary power.
But the termination for connecting load ratio bridging switch and temporary source in the prior art, not yet having occurred.
In view of the triviality and inconvenience of field wiring, relevant staff is generally using the side of regulation load ratio bridging switch manually
Formula, and the manually tap position of regulation tap switch, not only the labour intensity of testing crew is big, and can substantially reduce
The test efficiency of testing crew, so that the power off time of transformer increases, this greatly reduces the reliability of power supply.This is
The deficiencies in the prior art part.
The content of the invention
The technical problems to be solved by the invention are, in view of the shortcomings of the prior art, there is provided a kind of transformer loaded tap-off
Switch temporary source termination, the convenience for improving field wiring, to reduce the labour intensity of testing crew, so as to carry
The test efficiency of testing crew high, improves the reliability of power supply.
In order to solve the above technical problems, the invention provides a kind of on-load tap changers of transformers temporary source wiring dress
Put, including the cable hank with three-phase socket on its wheel disc, also including casing, described cable hank is arranged on described casing
It is interior；
One end of the cable hank wheel disc is provided with the handle for driving the wheel disc to rotate, and the handle is located at the outer of the casing
Portion, the side wall that its one end penetrates rotatably the casing is fixed on described wheel disc；
The cable wound on the wheel disc of the cable hank is three-phase four core cable line；
The roof of the casing is insulating panel, and the insulating panel is provided with three-phase four-wire system power supply wiring with four out-put supplies
Binding post, four described out-put supply binding posts are respectively A connect terminal, the C of terminal, B that connect and connect terminal and center line N connects
Terminal；
A core plug of three-phase four for being used to be used cooperatively with the three-phase socket on the cable hank is provided with described casing；
Four described out-put supply binding posts are electrically connected to the corresponding leading-out terminal of the core plug of the three-phase four；
The side wall of the casing is provided with one and can open and the operation door closed.
Wherein, cable hank is in unwrapping wire or take-up, and the described core plug of three-phase four is separated with described three-phase socket
State.
Wherein, three in four out-put supply binding posts connect and gone here and there between terminal and the described core plug of three-phase four
The first controlling switch is associated with, the first described controlling switch is arranged on described insulating panel.The use of the first controlling switch,
Increased the security that the present invention is used.
Wherein, the end of incoming cables of first controlling switch is equipped with least one single-phase socket and/at least one pair of single-phase wiring
Post, two single-phase binding posts in the single-phase binding post of each pair are used in conjunction with each other.
Wherein, described single-phase socket has two, and described single-phase binding post has two pairs, described single-phase socket and described
The single-phase binding post of two couples it is in parallel form a parallel branch, the single-phase electricity end of incoming cables of the parallel branch is equipped with 220V voltmeters, institute
The 220V voltmeters stated are on described insulating panel.
Wherein, the end of incoming cables of the 220V voltmeters is provided with the second controlling switch, and the second described controlling switch is arranged on
On described insulating panel.
Wherein, the leading-out terminal of first controlling switch is equipped with a 380V voltmeters, and the 380V voltmeters are arranged on described
Insulating panel on.
Wherein, the handle is located on the part outside casing rotationally equipped with a positioning support plate, described positioning branch
Support plate is fixed on the side wall of the casing.
Described on-load tap changers of transformers temporary source termination also includes that four are used for for transformer having load point
Connect switch and be connected to four described connecting wires of out-put supply binding post.
Compared with prior art, the advantage of the invention is that：
(1) present invention includes casing and the cable hank being arranged in casing, and three-phase socket, the insulating surfaces of casing are carried on cable hank
Plate is provided with four out-put supply binding posts of three-phase four-wire system power supply wiring, and four described out-put supply binding posts and one use
It is connected in the corresponding leading-out terminal to the core plug of three-phase four that the three-phase socket is used cooperatively, and is set on a side wall of casing
There is the operation door that can be opened with close, when using, separately take four wires, one to terminate this on-load tap changers of transformers temporarily electric
Four out-put supply binding posts of source termination, another secondary wiring terminals for being connected to the on-load tap changers of transformers
Row relevant position, opening operation door, is checking and is ensuring that the described core plug of three-phase four is in divide with described three-phase socket afterwards
After state, the free end of the cable that will be wound on cable hank is extracted out from described operation door and is connected to temporary source, and such as three
On the three-phase and four-line output wiring terminal of cross streams generator, afterwards by three on the core plug of the three-phase four insertion cable hank in casing
In phase socket, you can by temporary source be that described on-load tap changers of transformers is powered；With rear disconnection temporary source, remove
Four described wires, and the described core plug of three-phase four is extracted from described three-phase socket, handle is rotated by cable
Pack up, finally close described operation door；Wiring is convenient, can largely reduce the labour intensity of testing crew,
And then the test efficiency of raising testing crew, shorten the power off time length of transformer, what raising was powered to a certain extent can
By property；
(2) present invention is equipped with the first controlling switch between four out-put supply binding posts and the described core plug of three-phase four, and
In the end of incoming cables of first controlling switch equipped with least one single-phase socket and/at least one pair of single-phase binding post for using cooperatively,
Wherein, the use of at least one described single-phase socket and/at least one pair of single-phase binding post for using cooperatively, makes this transformer
Load ratio bridging switch temporary source termination can be used as the examination for connecting other experiment temporary sources of transformer
Test power supply connection box to use, experiment can reduce the unsafe factor of wiring without arranging other power lines in addition, again can be
Largely guarantee test scene neat specification.
As can be seen here, compared with prior art, with prominent substantive distinguishing features and significant progress, it is implemented the present invention
Beneficial effect be also obvious.
Brief description of the drawings
Fig. 1 is vertical view figure structure schematic representation of the invention；
Fig. 2 is the stereogram schematic diagram of above-mentioned Fig. 1；
Fig. 3 is the broken section figure structure schematic representation of above-mentioned Fig. 1, Fig. 2；
Fig. 4 is local circuit structural representation of the invention；
Fig. 5 is that handle is arranged on the structural representation on wall box shown in Fig. 1,2 and 3.
Wherein：1st, casing, 2, insulating panel, 3,380V voltmeters, the 4, first controlling switch, 5,220V voltmeters, 6, fixed
Position support plate, 7, handle, the 8, second controlling switch, 9, the core plug of three-phase four, 10, single phase double hole socket, 11, single-phase binding post,
12nd, single-phase binding post, 13, single-phase three-hole socket, 14, center line N binding posts, 15, C connect terminal, 16, B connect terminal, 17, A phases
Binding post, 18, operation door, 19, cable, 20, cable hank, 21, bearing, 22, bearing.
Specific embodiment
To make technical scheme and advantage clearer, below in conjunction with accompanying drawing of the invention, to of the invention
Technical scheme is clearly and completely described.
A kind of specific embodiment party of Fig. 1-5 on-load tap changers of transformers temporary source terminations shown in the present invention
Formula.The on-load tap changers of transformers temporary source termination includes casing 1 and the cable hank 20 being arranged in casing 1, institute
One end of wheel disc of cable hank 20 is stated with three-phase socket, the side wall of the casing 1 is provided with one can be opened and closing
Operation door 18.One end of the wheel disc of the cable hank 20 is provided with the handle 7 for driving the wheel disc to rotate.Handle 7 is located at the case
The outside of body 1, its one end is rotationally（Using bearing mounting means）Side wall through the casing 1 is fixed on the cable hank
On 20 wheel disc.The cable 19 wound on the wheel disc of cable hank 20 is three-phase four core cable line.The roof of casing 1 is insulating surfaces
Plate 2, the insulating panel 2 is provided with four out-put supply binding posts of three-phase four-wire system power supply wiring, four described outputs
Power -line terminal is respectively A terminal 17, the B terminals 16, C that connect that connect and connects terminal 15 and center line N binding posts 14.Set in casing 1
There is a core plug 9 of three-phase four for being used to be used cooperatively with the three-phase socket on the cable hank 20；Four described out-put supplies
Binding post is electrically connected to the corresponding leading-out terminal of the core plug 9 of the three-phase four.The part being located on handle 7 outside casing 1 close to case
One end of body 1 is rotationally（Bearing mounting means）Equipped with positioning support plate 6, the positioning support plate 6 is fixed on the casing 1
On the wall of side, reliability used in this application is adds somewhat to.
Wherein, described four core plug of three-phase 9 is using the core plug of GN-T25 three-phases four；Described cable hank 20 is based on wild wolf
YL-25CBF cable hanks, handle 7 is mounted with the wheel disc of its wolf YL-25CBF cable hank out of office.
In the present embodiment, three terminals that connect in four out-put supply binding posts, i.e. A connects terminal 17, B
The terminal 16, C that connects to connect and be in series with the first controlling switch 4 between terminal 15 and the described core plug 9 of three-phase four, for controlling this
The core plug 9 of three-phase four forms the break-make of circuit with four out-put supply binding posts.The leading-out terminal of first controlling switch 4
Equipped with a 380V voltmeters 3.The first described controlling switch 4 and 380V voltmeters 3 are installed on described insulating panel 2.
In the present embodiment, the end of incoming cables of first controlling switch 4 single-phase connects equipped with two single-phase sockets and two pairs
Terminal.Two single-phase binding posts in the single-phase binding post of each pair are used cooperatively.It is single-phase that two described single-phase sockets are respectively one
The single-phase three-hole socket 13 of Double-hole socket 10 and.Described two single-phase sockets and the two pairs of single-phase binding posts are installed in described
On insulating panel 2.Wherein, single-phase binding post 11 and single-phase binding post 12 are a pair therein single-phase binding posts, and the two cooperation makes
With for output single-phase electricity.Above-mentioned two single-phase socket and two pairs of uses of single-phase binding post, make the present invention can be additionally used in list
Mutually electricity increased the present invention and is suitable for the species of transformer test, while also increase using as the experiment of experiment power supply
Mode of connection when single-phase electricity is tested, and experiment can reduce the dangerous of wiring without arranging other power lines in addition
Factor, again can largely guarantee test scene neat specification.
In the present embodiment, described single phase double hole socket 10 is using bull GNT-Z1 single phase double holes socket, single-phase three
Spring hole scoket 13 uses GNT-Z2 single-phase three-hole sockets, and each the single-phase binding post in two pairs of single-phase binding posts is mono- using JS-333
Connect terminal, and wherein two single-phase binding posts in the single-phase binding post of each pair are respectively by a live wire L binding post and a zero line N
Binding post constitute, as described single-phase binding post 11 be live wire L binding posts, single-phase binding post 12 be zero line N binding posts.
In the present embodiment, two described single-phase sockets and the single-phase binding post of described two couple formation one in parallel branch in parallel
Road, the single-phase electricity end of incoming cables of the parallel branch is equipped with 220V voltmeters 5, and the end of incoming cables of the 220V voltmeters 5 is provided with for controlling
Second controlling switch 8 of the connecting and disconnecting of the circuit electricity measured by 220V voltmeters 5, the controlling switch 8 of 220V voltmeters 5 and second is pacified
On described insulating panel 2.
In the present embodiment, described the first controlling switch 4 is using positive Thailand DZ47LE 3P controlling switches, described the
Two controlling switch 8 is improved to a certain extent using positive Thailand DZ47LE 1P controlling switches, two uses of controlling switch
The security and stability of circuit.
In addition, in the present embodiment, described 380V voltmeters 3 use the western 42L6-HZ voltmeters of moral power, described
220V voltmeters 5 use the western 6L2 voltmeters of moral power, two uses of voltmeter, increased to temporary source delivery how much
The intuitive of observation, contributes to being smoothed out for experiment to a certain extent.
Additionally, in the present embodiment, described on-load tap changers of transformers temporary source termination also includes four
Root connecting wire, for connecting described four out-put supply binding posts and on-load tap changers of transformers.The present invention is with useful
In four out-put supply binding posts and the connecting wire of described on-load tap changers of transformers described in connection, electricity is which increased
The convenience of road wiring.Wherein, to simplify accompanying drawing structure, four described connecting wires draw not in the drawings, this area
Technical staff extremely easily realizes according to prior art, will not be repeated here.
Additionally, the instrument that cable hank is skilled person to be commonly used, those skilled in the art know its structure, in existing electricity
Additionally one handle is installed additional on the wheel disc of cable disk, the rotation for driving cable hank wheel disc, to carry out the retractable cable of cable hank, its
It is that those skilled in the art are extremely easily achieved based on prior art, therefore the content of book for the purpose of simplifying the description, herein no longer
The concrete structure and the cable hank 20 of cable hank 20 and the specific installment state schematic diagram of handle 7 are drawn in the accompanying drawings.
When the present invention is used, termination this on-load tap changers of transformers temporary source of above-mentioned four connecting wires is connect
Four out-put supply binding posts of line apparatus, another secondary wiring terminals row's phase for being connected to the on-load tap changers of transformers
Position is answered, afterwards opening operation door 18, checking and ensuring that the described core plug 9 of three-phase four is in separate with described three-phase socket
After state, the free end of the cable 19 wound on cable hank 20 is extracted out from described operation door 18 and temporary source is connected to
Three-phase and four-line output wiring terminal on, afterwards by casing 1 the core plug of three-phase four insertion cable hank 20 on three-phase socket in,
It is that described on-load tap changers of transformers is powered to connect by the first controlling switch 4 by temporary source.Additionally, when need by
When single-phase electricity carries out correlation test as experiment power supply, only the second controlling switch 8 need to be connected, you can based on being actually needed, select
Any one mode of connection in above-mentioned two single-phase socket and two pairs of single-phase binding posts is tested.
With rear disconnection temporary source, four described connecting wires are removed, and by the described core plug 9 of three-phase four described in
Three-phase socket in extract, rotate handle 7 and pack up cable 19, last shutoff operation door 18.In the present embodiment,
Involved temporary source is threephase alternator.
To sum up, present invention wiring is convenient, largely reduces the labour intensity of testing crew, and then improve examination
The test efficiency of personnel is tested, the power off time length of transformer is shortened, the reliability of power supply is improve to a certain extent.
Embodiment of above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing implementation
Mode has been described in detail to the present invention, it will be understood by those within the art that：It still can be to foregoing each
Technical scheme described in implementation method is modified, or carries out equivalent to which part technical characteristic；And these are repaiied
Change or replace, do not make the scope of essence disengaging each implementation method technical scheme of the invention of appropriate technical solution.
Claims (8)
1. a kind of on-load tap changers of transformers temporary source termination, including the cable with three-phase socket on its wheel disc
Disk, it is characterised in that：Also include casing, described cable hank is arranged in described casing；
One end of the cable hank wheel disc is provided with the handle for driving the wheel disc to rotate, and the handle is located at the outer of the casing
Portion, the side wall that its one end penetrates rotatably the casing is fixed on described wheel disc；
The cable wound on the wheel disc of the cable hank is three-phase four core cable line；
The roof of the casing is insulating panel, and the insulating panel is provided with three-phase four-wire system power supply wiring with four out-put supplies
Binding post, four described out-put supply binding posts are respectively A connect terminal, the C of terminal, B that connect and connect terminal and center line N connects
Terminal；
A core plug of three-phase four for being used to be used cooperatively with the three-phase socket on the cable hank is provided with described casing；
Four described out-put supply binding posts are electrically connected to the corresponding leading-out terminal of the core plug of the three-phase four；
The side wall of the casing is provided with one and can open and the operation door closed.
2. on-load tap changers of transformers temporary source termination according to claim 1, it is characterised in that：Described four
Three in individual out-put supply binding post to connect and be in series with the first controlling switch, institute between terminal and the described core plug of three-phase four
The first controlling switch stated is arranged on described insulating panel.
3. on-load tap changers of transformers temporary source termination according to claim 2, it is characterised in that：Described
The end of incoming cables of one controlling switch is equipped with least one single-phase socket and/at least one pair of single-phase binding post, in the single-phase binding post of each pair
Two single-phase binding posts be used in conjunction with each other.
4. on-load tap changers of transformers temporary source termination according to claim 3, it is characterised in that：Described
Single-phase socket has two, and described single-phase binding post has two pairs, and the described single-phase binding post of single-phase socket and described two couple is simultaneously
Connection forms a parallel branch, and the single-phase electricity end of incoming cables of the parallel branch is equipped with 220V voltmeters, and described 220V voltmeters are positioned on
On described insulating panel.
5. on-load tap changers of transformers temporary source termination according to claim 4, it is characterised in that：It is described
The end of incoming cables of 220V voltmeters is provided with the second controlling switch, and the second described controlling switch is arranged on described insulating panel.
6. on-load tap changers of transformers temporary source termination according to claim 1 and 2, it is characterised in that：Institute
The leading-out terminal of the first controlling switch is stated equipped with a 380V voltmeters, the 380V voltmeters are arranged on described insulating panel.
7. on-load tap changers of transformers temporary source termination according to claim 1 and 2, it is characterised in that：Institute
Handle is stated on the part outside casing rotationally equipped with a positioning support plate, described positioning support plate is fixed on the case
On the side wall of body.
8. on-load tap changers of transformers temporary source termination according to claim 1 and 2, it is characterised in that：Also
It is used to for on-load tap changers of transformers to be connected to four described connecting wires of out-put supply binding post including four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710031981.XA CN106785730B (en) | 2017-01-17 | 2017-01-17 | Temporary power supply wiring device of on-load tap-changer of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710031981.XA CN106785730B (en) | 2017-01-17 | 2017-01-17 | Temporary power supply wiring device of on-load tap-changer of transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106785730A true CN106785730A (en) | 2017-05-31 |
| CN106785730B CN106785730B (en) | 2023-06-20 |
Family
ID=58946109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710031981.XA Active CN106785730B (en) | 2017-01-17 | 2017-01-17 | Temporary power supply wiring device of on-load tap-changer of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106785730B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5595495A (en) * | 1994-05-19 | 1997-01-21 | Haworth, Inc. | Electrified interior space-dividing members with low-voltage switching system |
| CN201450292U (en) * | 2009-07-23 | 2010-05-05 | 王成 | Portable multifunctional power box with plate connector of 380 V and 220 V |
| CN202406010U (en) * | 2012-01-16 | 2012-08-29 | 江苏省电力公司镇江供电公司 | Multifunctional safe power box |
| CN203251092U (en) * | 2013-05-20 | 2013-10-23 | 国家电网公司 | Multifunctional transition source box |
| CN204179496U (en) * | 2014-08-28 | 2015-02-25 | 国网山东省电力公司青岛供电公司 | A kind of anticreep maintenance power box |
| CN205123051U (en) * | 2015-11-30 | 2016-03-30 | 淄博齐林电力工程有限公司 | Job site second grade power supply box |
| CN205565468U (en) * | 2016-02-25 | 2016-09-07 | 国家电网公司 | Many power supply boxs for function test |
| CN205724415U (en) * | 2016-06-21 | 2016-11-23 | 王志勇 | A kind of quickly supplying electricity and power distribution case |
| CN206758770U (en) * | 2017-01-17 | 2017-12-15 | 国网山东省电力公司滨州供电公司 | A kind of on-load tap changers of transformers temporary source termination |
-
2017
- 2017-01-17 CN CN201710031981.XA patent/CN106785730B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5595495A (en) * | 1994-05-19 | 1997-01-21 | Haworth, Inc. | Electrified interior space-dividing members with low-voltage switching system |
| CN201450292U (en) * | 2009-07-23 | 2010-05-05 | 王成 | Portable multifunctional power box with plate connector of 380 V and 220 V |
| CN202406010U (en) * | 2012-01-16 | 2012-08-29 | 江苏省电力公司镇江供电公司 | Multifunctional safe power box |
| CN203251092U (en) * | 2013-05-20 | 2013-10-23 | 国家电网公司 | Multifunctional transition source box |
| CN204179496U (en) * | 2014-08-28 | 2015-02-25 | 国网山东省电力公司青岛供电公司 | A kind of anticreep maintenance power box |
| CN205123051U (en) * | 2015-11-30 | 2016-03-30 | 淄博齐林电力工程有限公司 | Job site second grade power supply box |
| CN205565468U (en) * | 2016-02-25 | 2016-09-07 | 国家电网公司 | Many power supply boxs for function test |
| CN205724415U (en) * | 2016-06-21 | 2016-11-23 | 王志勇 | A kind of quickly supplying electricity and power distribution case |
| CN206758770U (en) * | 2017-01-17 | 2017-12-15 | 国网山东省电力公司滨州供电公司 | A kind of on-load tap changers of transformers temporary source termination |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106785730B (en) | 2023-06-20 |
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