CN110379681A - A kind of breaker of plastic casing with ground - Google Patents
A kind of breaker of plastic casing with ground Download PDFInfo
- Publication number
- CN110379681A CN110379681A CN201910720198.3A CN201910720198A CN110379681A CN 110379681 A CN110379681 A CN 110379681A CN 201910720198 A CN201910720198 A CN 201910720198A CN 110379681 A CN110379681 A CN 110379681A
- Authority
- CN
- China
- Prior art keywords
- ground
- phase circuit
- breaker
- terminal plate
- plastic casing
- 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.)
- Withdrawn
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 230000001052 transient effect Effects 0.000 abstract description 4
- 230000008676 import Effects 0.000 abstract description 2
- 208000025274 Lightning injury Diseases 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
Abstract
The present invention relates to a kind of breaker of plastic casing with ground, including the pedestal set gradually, middle seat, upper cover, the pedestal is mounted on guide rail, terminal plate is provided on the middle seat, the side of the terminal plate is provided with ground strip, locating slot is formed on the middle seat, one end of the ground strip is electrically connected with terminal plate, the other end of ground strip is arranged in locating slot, the lower section of the locating slot forms the ground hole for running through middle seat and pedestal, earthing screw is provided on the other end of the ground strip, the earthing screw sequentially passes through ground strip, it is fixed on guide rail after ground hole, the guide rail is connected to the earth.Breaker of plastic casing of the invention can realize the ground protection of breaker of plastic casing itself; transient current caused by being struck by lightning imports the earth; it avoids breaker of plastic casing itself from damaging, while protecting subscriber household electric appliance unaffected, and the mounting means of protective grounding is simple and convenient.
Description
Technical field
The present invention relates to a kind of breaker of plastic casing, more particularly to a kind of breaker of plastic casing with ground.
Background technique
Breaker of plastic casing can automatically cut off electric current after electric current is more than escape setting, realize circuit overcurrent short-circuit protection.
Breaker of plastic casing is typically mounted in power distribution cabinet, and existing majority breaker of plastic casing itself is not provided with ground line, plastic housing
The side of breaker is electrically connected on the busbar exported by transformer, and the other side of breaker of plastic casing is electrically connected to subscriber household line
Road, although being provided with ground protection on transformer, transformer grounding is unstable, and transformer is to the distance of breaker of plastic casing
Typically much deeper than breaker of plastic casing to subscriber household distance, when by breaker of plastic casing electric current far beyond its rated current
When, such as short circuit occurs for route or power distribution cabinet is struck by lightning, the immediate current of generation cannot be directly communicated to the earth, after not only influencing
The electric appliance of continuous subscriber household, or even serious power distribution cabinet safety accident can be caused.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of breaker of plastic casing with ground, it can be achieved that breaker of plastic casing
The ground protection of itself, the generated transient current that will be struck by lightning import the earth, avoid other mechanisms of breaker of plastic casing because of moment mistake
It flows and burns.
In order to achieve the goal above, the present invention uses such a breaker of plastic casing with ground, including what is set gradually
Pedestal, middle seat, upper cover, the pedestal are mounted on guide rail, and terminal plate is provided on the middle seat, and the side of the terminal plate is set
It is equipped with ground strip, forms locating slot on the middle seat, one end of the ground strip is electrically connected with terminal plate, the other end of ground strip
It is arranged in locating slot, the lower section of the locating slot forms the ground hole for running through middle seat and pedestal, the other end of the ground strip
On be provided with earthing screw, the earthing screw is fixed on guide rail after sequentially passing through ground strip, ground hole, the guide rail connection
To greatly.
The above-mentioned ground wire by breaker of plastic casing passes through the guidance of earth plate and earthing screw, is fixedly attached on guide rail,
Then the ground connection for realizing breaker of plastic casing is connected over the ground by guide rail, the transient high-current for generating lightning stroke or line fault can be straight
It connects and the earth is discharged, avoid breaker of plastic casing itself from damaging, while protecting subscriber household electric appliance unaffected, and such ground connection
Mode structure is simple, easy for installation, at low cost, and installation personnel only needs for earthing screw to be connected on guide rail i.e. across ground strip
It can.
The present invention is further arranged to be provided with A phase circuit, B phase circuit, C phase circuit, N phase circuit on pedestal, on middle seat
Be provided with surge protection module, the surge protection module is electrically connected with terminal plate, the terminal plate respectively with A phase circuit, B phase
Circuit, C phase circuit, the electrical connection of N phase circuit, the surge protection module and terminal plate realize common ground connection by ground strip.
Above-mentioned surge protection module and terminal plate common ground connection, ground strip are both confluence and reference point, can reduce modeling
The signal of case circuit breaker itself interferes with each other, and improves the stability of terminal plate and surge protection module work, secondly surge protection
Module can absorb the surge current that most of lightning stroke generates, and remaining surge current then passes through ground strip and is discharged into the earth.
The present invention is further arranged to locating slot and forms resigning mouthful close to the side of terminal plate, and the ground strip includes connection
Portion, the head and the tail both ends of the interconnecting piece extend to form the first folding portion and perpendicular to interconnecting piece to the two sides of interconnecting piece respectively
Two folding portions, first folding portion are arranged in resigning mouthful and are electrically connected with the ground terminal of terminal plate, and second folding portion is set
It sets in the bottom of locating slot, earthing screw is connected in the second folding portion.
The shell of above-mentioned breaker of plastic casing is the resigning that ground strip has been cooked certain space, facilitates the installation of ground strip, is grounded
Earthing potential inside breaker of plastic casing is connected to the earth by piece.
The present invention is further arranged to form more sheets of conductive intermediate plate on terminal plate, and more sheets of conductive intermediate plate is electrically connected A phase
Circuit, B phase circuit, C phase circuit, N phase circuit and ground strip form more sheets of conductive inserted sheet, surge on the surge protection module
Protective module is electrically connected by conductive insert with the cooperation of conductive clip with terminal plate formation.
Above-mentioned surge protection module is electrically connected to each phase of breaker of plastic casing by conductive insert with the cooperation of conductive clip
Circuit and ground strip facilitate the replacement and installation of surge protection module.
It includes multiple fuse FUSE, multiple lightning protection varistor SPD that the present invention, which is further arranged to surge protection module,
And one end of gas-discharge tube GDT, the gas-discharge tube GDT connect ground wire, A phase circuit is another with gas-discharge tube GDT's
It is connected between fuse FUSE and lightning protection varistor SPD, B phase circuit and the other end of gas-discharge tube GDT and connects between end
It is connected between fuse FUSE and lightning protection varistor SPD, C phase circuit and the other end of gas-discharge tube GDT and is connected with insurance
Lightning protection varistor is connected between silk FUSE and lightning protection varistor SPD, N phase circuit and the other end of gas-discharge tube GDT
SPD。
Above-mentioned breaker of plastic casing is being struck by lightning, and setting connects anti-between each phase circuit (A, B, C, N phase) and ground wire
When transient voltage is higher than certain value, resistance can decline rapidly that high current is connected thunder varistor SPD；Each phase circuit
The fuse FUSE connected between (A, B, C phase) and ground wire by lightning protection varistor SPD electric current is excessive and the duration
When too long, fuse FUSE can fuse；Gas-discharge tube GDT is to increase above its tube interior gas that discharges in its both end voltage
It is connected when dielectric strength, sharing a gas-discharge tube GDT is that the lightning stroke voltage of each phase is added in its both ends, accelerates gas and puts
The conducting of fulgurite GDT.For such surge protection module when breaker of plastic casing is by being struck by lightning, no matter which phase circuit generates surge
Electric current sponges the surge current that most of lightning stroke generates by lightning protection varistor SPD first, then remaining surge electricity
Stream is discharged into the earth by gas-discharge tube GDT, and surge protection module is made to complete the release step by step to lightning stroke energy.
The present invention is further arranged to the piece number of conductive insert and the piece number of conductive clip is 5.
Above-mentioned 5 conductive inserts and conductive clip are used for surge protection module and are electrically connected to each phase circuit and ground wire.
Detailed description of the invention
Fig. 1 is breaker of plastic casing explosive view of the embodiment of the present invention.
Fig. 2 is that breaker of plastic casing of the embodiment of the present invention removes main view after upper cover.
Fig. 3 is the cross-sectional view of A-A in Fig. 2.
Fig. 4 is ground strip perspective view of the embodiment of the present invention.
Fig. 5 is surge protection module of the embodiment of the present invention and conductive clip perspective view.
Fig. 6 is surge protection module circuit diagram of the embodiment of the present invention.
Specific embodiment
As shown in Figs. 1-5, the present invention is a kind of breaker of plastic casing with ground, including set gradually pedestal 1, middle seat 2,
Upper cover 3, the pedestal 1 are mounted on guide rail 4, and A phase circuit 11, B phase circuit 12, C phase circuit 13, N phase time are provided on pedestal 1
Road 14 is provided with terminal plate 21 and surge protection module 6 on the middle seat 2, and the side of the terminal plate 21 is provided with ground strip
5,5 conductive clips 26 are formed on terminal plate 6, conductive clip 26 is electrically connected A phase circuit 11, B phase circuit 12, C phase circuit
13, N phase circuit 14 and ground strip 5, form 5 conductive inserts 61 on the surge protection module 6, and surge protection module 6 passes through
Conductive insert 61 is electrically connected with the cooperation of conductive clip 26 with the formation of terminal plate 21, and the ground strip 5 includes interconnecting piece 51, described
The head and the tail both ends of interconnecting piece 51 extend to form the first folding portion 52 and perpendicular to interconnecting piece to the two sides of interconnecting piece 51 respectively
Two folding portions 53, form locating slot 22 on the middle seat 2, and locating slot 22 forms resigning mouthful 25, institute close to the side of terminal plate 21
It states the first folding portion 52 resigning mouthful 25 is arranged in and is electrically connected with the ground terminal on terminal plate 21, second folding portion 53 is arranged
In the bottom of locating slot 22, the lower section of the locating slot 22 forms the ground hole 23 for running through middle seat 2 and pedestal 1, the ground connection spiral shell
Nail 24 is fixed on guide rail 4 after sequentially passing through the second folding portion 53, ground hole 23, and the guide rail 4 is connected to the earth, the surge
Protective module 6 and terminal plate 21 realize common ground connection by ground strip 5.
As shown in fig. 6, surge protection module includes that multiple fuse FUSE, multiple lightning protection varistor SPD and gas are put
One end of fulgurite GDT, the gas-discharge tube GDT connect ground wire, connect between A phase circuit and the other end of gas-discharge tube GDT
It is connected between fuse FUSE and lightning protection varistor SPD, B phase circuit and the other end of gas-discharge tube GDT and is connected with insurance
Silk FUSE and lightning protection varistor SPD, C phase circuit and the other end of gas-discharge tube GDT between be connected with fuse FUSE and
Lightning protection varistor SPD is connected between lightning protection varistor SPD, N phase circuit and the other end of gas-discharge tube GDT.
According to above embodiments, the surge protection module and terminal plate of breaker of plastic casing of the present invention pass through earthing screw and
The cooperation of ground strip is fixed on the guide rail of ground connection, to realize common ground connection, be struck by lightning or line fault generate it is instantaneous
When high current, the lightning protection varistor SPD on surge protection module, which is connected rapidly, absorbs most surge current, and is put by gas
Remaining surge current is discharged into the earth by fulgurite GDT, is made the function of breaker of plastic casing itself electric discharge with ground, is not only improved plastic housing
Breaker service life, and condenser is not damaged after energy effective protection.
Claims (6)
1. a kind of breaker of plastic casing with ground, including pedestal, the middle seat, upper cover set gradually, the pedestal is mounted on guide rail
On, it is characterised in that: it is provided with terminal plate on the middle seat, the side of the terminal plate is provided with ground strip, on the middle seat
Locating slot is formed, one end of the ground strip is electrically connected with terminal plate, and the other end of ground strip is arranged in locating slot, described fixed
The lower section of position slot forms the ground hole for running through middle seat and pedestal, is provided with earthing screw on the other end of the ground strip, described
Earthing screw is fixed on guide rail after sequentially passing through ground strip, ground hole, and the guide rail is connected to the earth.
2. breaker of plastic casing with ground according to claim 1, it is characterised in that: be provided with A phase on the pedestal and return
Road, B phase circuit, C phase circuit, N phase circuit are provided with surge protection module, the surge protection module and terminal plate on middle seat
Electrical connection, the terminal plate are electrically connected with A phase circuit, B phase circuit, C phase circuit, N phase circuit respectively, the surge protection module
Common ground connection is realized by ground strip with terminal plate.
3. breaker of plastic casing with ground according to claim 1 or 2, it is characterised in that: the locating slot is close to wiring
The side of plate forms resigning mouthful, and the ground strip includes interconnecting piece, and the head and the tail both ends of the interconnecting piece are respectively to the two of interconnecting piece
Side extends to form the first folding portion and the second folding portion perpendicular to interconnecting piece, the first folding portion setting resigning mouthful and with
The bottom of locating slot is arranged in terminal plate electrical connection, second folding portion, and earthing screw is connected in the second folding portion.
4. breaker of plastic casing with ground according to claim 2, it is characterised in that: form multi-disc on the terminal plate and lead
Electric intermediate plate, more sheets of conductive intermediate plate are electrically connected A phase circuit, B phase circuit, C phase circuit, N phase circuit and ground strip, the surge
More sheets of conductive inserted sheet, the cooperation and terminal plate shape that surge protection module passes through conductive insert and conductive clip are formed in protective module
At electrical connection.
5. breaker of plastic casing with ground according to claim 4, it is characterised in that: the surge protection module includes more
One end of a fuse FUSE, multiple lightning protection varistor SPD and gas-discharge tube GDT, the gas-discharge tube GDT connection ground
Line, is connected with fuse FUSE between A phase circuit and the other end of gas-discharge tube GDT and lightning protection varistor SPD, B phase is returned
Fuse FUSE and lightning protection varistor SPD, C phase circuit and gas are connected between road and the other end of gas-discharge tube GDT
Fuse FUSE and lightning protection varistor SPD, N phase circuit and gas-discharge tube GDT are connected between the other end of discharge tube GDT
The other end between be connected with lightning protection varistor SPD.
6. breaker of plastic casing with ground according to claim 4 or 5, it is characterised in that: the piece number of the conductive insert
The piece number with conductive clip is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910720198.3A CN110379681A (en) | 2019-08-06 | 2019-08-06 | A kind of breaker of plastic casing with ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910720198.3A CN110379681A (en) | 2019-08-06 | 2019-08-06 | A kind of breaker of plastic casing with ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110379681A true CN110379681A (en) | 2019-10-25 |
Family
ID=68258103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910720198.3A Withdrawn CN110379681A (en) | 2019-08-06 | 2019-08-06 | A kind of breaker of plastic casing with ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110379681A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113192797A (en) * | 2021-04-20 | 2021-07-30 | 浙江诚通电力科技有限公司 | Electrostatic absorption type residual current operated circuit breaker |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2376112Y (en) * | 1998-07-21 | 2000-04-26 | 深圳市华为电气股份有限公司 | Lightning protection device |
| KR200243895Y1 (en) * | 2001-05-22 | 2001-10-29 | 서일전자 주식회사 | Structure for grounding a terminal block module |
| KR20070025230A (en) * | 2005-09-01 | 2007-03-08 | 주식회사 티지오 | One body style braker having surge protector device |
| CN201038474Y (en) * | 2007-04-04 | 2008-03-19 | 实盈电子(东莞)有限公司 | Socket connector grounding improved structure |
| CN204517172U (en) * | 2015-04-09 | 2015-07-29 | 河北宝凯电气有限公司 | A kind of breaker of plastic casing guide rail fixing structure |
| CN205389056U (en) * | 2015-12-18 | 2016-07-20 | 浙江正泰电器股份有限公司 | Compact surge protector |
| CN206595215U (en) * | 2017-03-14 | 2017-10-27 | 厦门尤伯电气有限公司 | A kind of breaker of connection protection with ground |
| CN207801061U (en) * | 2018-02-08 | 2018-08-31 | 乐清市宏昌无线电有限公司 | The ground structure of power outlet |
| CN208507986U (en) * | 2018-08-10 | 2019-02-15 | 成都瑞联电气股份有限公司 | A kind of earthing module of guide tracked mounting bracket |
| CN209896001U (en) * | 2019-08-06 | 2020-01-03 | 海格科技股份有限公司 | Plastic case circuit breaker with grounding function |
-
2019
- 2019-08-06 CN CN201910720198.3A patent/CN110379681A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2376112Y (en) * | 1998-07-21 | 2000-04-26 | 深圳市华为电气股份有限公司 | Lightning protection device |
| KR200243895Y1 (en) * | 2001-05-22 | 2001-10-29 | 서일전자 주식회사 | Structure for grounding a terminal block module |
| KR20070025230A (en) * | 2005-09-01 | 2007-03-08 | 주식회사 티지오 | One body style braker having surge protector device |
| CN201038474Y (en) * | 2007-04-04 | 2008-03-19 | 实盈电子(东莞)有限公司 | Socket connector grounding improved structure |
| CN204517172U (en) * | 2015-04-09 | 2015-07-29 | 河北宝凯电气有限公司 | A kind of breaker of plastic casing guide rail fixing structure |
| CN205389056U (en) * | 2015-12-18 | 2016-07-20 | 浙江正泰电器股份有限公司 | Compact surge protector |
| CN206595215U (en) * | 2017-03-14 | 2017-10-27 | 厦门尤伯电气有限公司 | A kind of breaker of connection protection with ground |
| CN207801061U (en) * | 2018-02-08 | 2018-08-31 | 乐清市宏昌无线电有限公司 | The ground structure of power outlet |
| CN208507986U (en) * | 2018-08-10 | 2019-02-15 | 成都瑞联电气股份有限公司 | A kind of earthing module of guide tracked mounting bracket |
| CN209896001U (en) * | 2019-08-06 | 2020-01-03 | 海格科技股份有限公司 | Plastic case circuit breaker with grounding function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113192797A (en) * | 2021-04-20 | 2021-07-30 | 浙江诚通电力科技有限公司 | Electrostatic absorption type residual current operated circuit breaker |
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191025 |
|
| WW01 | Invention patent application withdrawn after publication |