CN201213204Y - DC stringing distribution switch - Google Patents
DC stringing distribution switch Download PDFInfo
- Publication number
- CN201213204Y CN201213204Y CNU2008200369228U CN200820036922U CN201213204Y CN 201213204 Y CN201213204 Y CN 201213204Y CN U2008200369228 U CNU2008200369228 U CN U2008200369228U CN 200820036922 U CN200820036922 U CN 200820036922U CN 201213204 Y CN201213204 Y CN 201213204Y
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- terminal
- wiring terminal
- series
- multipole
- 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
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model discloses a DC wiring cellular switch which belongs to the technical field of a switch and comprises a metal box body in which an input wiring terminal and an output wiring terminal are arranged, and a multipolar DC circuit breaker is connected between the input wiring terminal and the output wiring terminal; all contacts of the multipolar DC circuit breaker are orderly connected in series; and a resistor and an indicating lamp are electrically connected in series between the output wiring terminal and an earth terminal. The utility model has the advantage that all the contacts of the multipolar DC circuit breaker are connected in series, therefore, the arc extinguishing capability of the DC circuit breaker is increased. The resistor and the branch of the indicating lamp heat the metal box body, thereby the moisture resistance of the DC wiring cellular switch is improved.
Description
Technical field
The utility model relates to the switch that the energy bringing onto load cuts off colliery rail transport dc electric power supply.It specifically is a kind of dc electric partition switch.
Background technology
At present, colliery rail transport dc electric switch commonly used is made up of handle, spring mechanism, disconnecting link, arc chute.During combined floodgate, manually upwards move handle, drive the disconnecting link cutting blade by spring mechanism and rotate, contact, finish closing operation with quiet switch.The artificial reverse handle of moving during separating brake drives moving knife brake lining backwards rotation by spring mechanism, disengages with quiet switch.Disadvantage is: when overcurrent or short circuit appear in load, itself does not possess the automatic trip function dc electric partition switch, when manually by force during separating brake, because of dc electric partition switch extinguishing arc ability low, the separating brake process is easy to generate strong electric arc, causes the electric arc casualty accident.Humid environment under the coal mine, the dc electric partition switch does not have moistureproof ability, arrive when rainy season, the down-hole humid air in the dc electric partition switch electric component and the insulation device on dewfall, reduce the dielectric strength of electric component in the dc electric partition switch, the dc electric partition switch accident that is short-circuited easily.
Summary of the invention
Can not cut off overload and short circuit current automatically in order to overcome existing partition switch, separating brake process extinguishing arc ability is low, the problem of humidity resistance difference, the utility model provides a kind of dc electric partition switch, automatic trip when this dc electric partition switch can not only possess overcurrent or short circuit, and the extinguishing arc ability is strong, possesses down-hole moisture proof function.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of dc electric partition switch, comprise metal cabinet, in metal cabinet, be provided with input wires terminal, output wiring terminal, between input wires terminal and output wiring terminal, be connected with multipole dc circuit breaker; Each contact of multipole dc circuit breaker is connected in series in proper order; Resistor and indicator light between output wiring terminal and earth terminal, have been electrically connected in series.
When overcurrent or short circuit appear in dc electric load that partition switch connects, the overload protection component protection mechanism action of multipole dc circuit breaker, the multipole contact disjunction simultaneously that links, the disconnection DC power supply is connected with load.Multipole contact in turn series connection disjunction simultaneously, the extinguishing arc ability of enhancing low-voltage direct circuit breaker, the electric arc that burns when guaranteeing reliably to extinguish the fault disjunction.Indicator light work is serially connected in the resistance heating in the indicator light circuit when lighting, the heat that produces makes the temperature in the metal-back shell outer higher than shell, the outer humid air of shell can not be in shell dewfall on the electric component, improve the dielectric strength of dc electric partition switch, reduce the failure rate of dc electric partition switch.
The beneficial effects of the utility model are: simple in structure, use the lower multipole dc circuit breaker of disjunction voltage, and make the dc electric partition switch possess the ability of the fault current of automatic cut-out dc electric.Use indicator light, when the indication partition switch has/do not have electricity, play the interior electric component of switch and drive the tide effect.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is specific embodiment profile of dc electric partition switch;
Fig. 3 is an insulation board back side copper bar connection diagram embodiment illustrated in fig. 2.
Among the figure, 1. input wires terminal, 2. multipole dc circuit breaker, 3. output wiring terminal, 4. resistor, 5. indicator light, 6. earth terminal, 7. copper bar, 8. casing, 9, insulation board.
Embodiment
As shown in Figure 1, input wires terminal 1, multipole dc circuit breaker 2, output wiring terminal 3 are connected in series, wherein eight of multipole dc circuit breaker contacts (1), (2), (3), (4), (5), (6), (7), (8) are connected in series, the series connection of formation multiconductor, the segmentation arc extinguishing, increase contact disjunction distance, improve the arc extinguishing ability of dc circuit breaker.6 of lead-out terminal 3 and earth terminals are in series with resistor 4 and indicator light 5.When direct current passed through resistor, resistor produced heat, heating, make casing 8 interior temperature than the outer temperature height of housing, so humid air can not enter in the casing 8 outside the casing, reaches the moistureproof purpose of dc electric partition switch.The selection of resistor 4 resistances makes by electric current about 10mA, and performance number is bigger 2 times than actual power, and to improve the useful life of resistor, indicator light is selected LED light, operating voltage DC24V.
As Fig. 2, shown in Figure 3, shell of the present utility model is a metal cabinet 10, and the both sides on metal cabinet 10 tops respectively are provided with an incoming line, and a line outlet is arranged at the bottom.The front of the insulation boards of part device in metal cabinet 10 such as input wires terminal 1, multipole dc circuit breaker 2, output wiring terminal 3, resistor 4 and indicator light 5.
As shown in Figure 3, be connected in series with the copper bar with excellent conductive performance 7 that is located at insulation board 9 back sides specially between each binding post of multipole dc circuit breaker 2.
Claims (3)
1. a dc electric partition switch comprises metal cabinet (8), is provided with input wires terminal (1), output wiring terminal (3) in metal cabinet, it is characterized in that: be connected with multipole dc circuit breaker (2) between input wires terminal and output wiring terminal; Each contact of multipole dc circuit breaker is connected in series in proper order; Between output wiring terminal and earth terminal, be in series with resistor (4) and indicator light (5).
2. dc electric partition switch according to claim 1 is characterized in that: input wires terminal (1), multipole dc circuit breaker (2), output wiring terminal (3) are installed on the insulation board (9).
3. dc electric partition switch according to claim 1 is characterized in that: the copper bar with excellent conductive performance (7) with insulation board (9) back side between each binding post of multipole dc circuit breaker (2) is connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200369228U CN201213204Y (en) | 2008-05-31 | 2008-05-31 | DC stringing distribution switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200369228U CN201213204Y (en) | 2008-05-31 | 2008-05-31 | DC stringing distribution switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201213204Y true CN201213204Y (en) | 2009-03-25 |
Family
ID=40497382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200369228U Expired - Fee Related CN201213204Y (en) | 2008-05-31 | 2008-05-31 | DC stringing distribution switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201213204Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130314847A1 (en) * | 2012-05-22 | 2013-11-28 | Schneider Electric USA, Inc. | Drawout disconnecting and isolating means for dc applications |
| CN108511279A (en) * | 2018-05-25 | 2018-09-07 | 江苏明及电气股份有限公司 | Interpolar connecting plate for multipole circuit breaker |
| CN111527576A (en) * | 2017-12-27 | 2020-08-11 | Ls电气株式会社 | Direct current breaker |
-
2008
- 2008-05-31 CN CNU2008200369228U patent/CN201213204Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130314847A1 (en) * | 2012-05-22 | 2013-11-28 | Schneider Electric USA, Inc. | Drawout disconnecting and isolating means for dc applications |
| US8743531B2 (en) * | 2012-05-22 | 2014-06-03 | Schneider Electric USA, Inc. | Drawout disconnecting and isolating means for DC applications |
| CN111527576A (en) * | 2017-12-27 | 2020-08-11 | Ls电气株式会社 | Direct current breaker |
| US11430621B2 (en) | 2017-12-27 | 2022-08-30 | Ls Electric Co., Ltd. | DC circuit breaker |
| CN108511279A (en) * | 2018-05-25 | 2018-09-07 | 江苏明及电气股份有限公司 | Interpolar connecting plate for multipole circuit breaker |
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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 |
Granted publication date: 20090325 Termination date: 20160531 |