CN107658194A - A kind of inside cascade structure for low-voltage direct breaker - Google Patents
A kind of inside cascade structure for low-voltage direct breaker Download PDFInfo
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- CN107658194A CN107658194A CN201711044710.4A CN201711044710A CN107658194A CN 107658194 A CN107658194 A CN 107658194A CN 201711044710 A CN201711044710 A CN 201711044710A CN 107658194 A CN107658194 A CN 107658194A
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- Prior art keywords
- contact
- cascade structure
- voltage direct
- low
- wiring terminal
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- 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
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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Abstract
The present invention relates to a kind of inside cascade structure for low-voltage direct breaker; the cascade structure includes pedestal, three groups of contact units being arranged in pedestal and two overloads and short-circuit protection electrical apparatus release; wherein there is the moving contact connection of two groups of adjacent contact units; static contact is provided with external wiring terminal, and the connection line of two moving contacts is provided with protection location；External wiring terminal is equipped with the static contact and moving contact of remaining one group of contact unit, and is provided with protection location.Compared with prior art, the present invention can effectively reduce loop copper consumption, reduce product cost, and reduce at internal short circuit, so as to reduce home loop contact resistance, reduce product temperature rise, enhance product performance.
Description
Technical field
The present invention relates to field of circuit breakers, and in particular to a kind of inside cascade structure for low-voltage direct breaker.
Background technology
Since the new century, solar photovoltaic industry has turned into one of world today's new industry of greatest concern, light
Volt generating does not need raw material, no gas discharge, belongs to pollution-free industry, has pollution-free, safety, long-life, never exhaustion etc. is excellent
Point, it is referred to as 21 century most important new energy, is widely used.
With the fast development of new energy industry, DC techniques are therewith by more and more extensive application, the particularly sun
The operating voltage more and more higher of energy electricity generation system, higher requirement, low-voltage direct breaker are proposed to low-voltage direct breaker
Rated operational voltage be even as high as 1500V.
Traditionally, it is the rated operational voltage of raising dc circuit breaker, the mode of generally use multipole pole connection, i.e., by more
Breakpoint realizes higher operating voltage.The mode of pole connection mainly has two kinds：One kind is directly to realize pole by outside short circuit row
Between connect, but this kind of pole is coupled structure easily increases loop resistance, heat is added up at short circuit, causes breaker temperature rise too high,
Service behaviour reduces.Another kind is to use internal short circuit mode.
Patent CN 204632703U disclose the breaker that a kind of double-deck pole is coupled structure, including static contact and pedestal, described
Static contact includes contact part and pole connects portion, and the static contact is in alphabetical L-shaped, is fixedly mounted on pedestal, at the contact part
In the upper strata of pedestal, the pole portion of company is in the lower floor of pedestal, so as to realize that double-deck pole links structure.But the breaker is in reality
In use, temperature rise still has, a bit higher on border, ineffective.
Patent CN205487985U discloses a kind of multipole circuit breaker loop structure, and it includes circuit breaker base, at least 3 groups
Moving contact is on main shaft, and mutually insulated between each group moving contact after installation, moving contact can be around main axis, and every group of moving contact is all
There are corresponding static contact or static contact panel and arc-chutes, main shaft is on circuit breaker base, it is characterised in that：The circuit breaker base
It is interior to be connected between two groups of moving contacts of phase by a conductor, or one group of moving contact and the stationary contact corresponding to one group of moving contact every phase
Connected between head by a conductor, and after being connected by any of the above mode, form the alternate series connection with least two breakpoints
Same polarity or same-phase a pole, and two groups of moving contacts can independently rotate relative to main shaft.But the structure of the breaker compared with
For complexity, amount of copper consuming is larger, and cost is high.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of cost is low, temperature rise is small
The inside cascade structure for low-voltage direct breaker.
The purpose of the present invention can be achieved through the following technical solutions：A kind of internal level for low-voltage direct breaker
It is coupled structure, the cascade structure includes pedestal, three groups of contact units being arranged in pedestal and two overloads and short-circuit protection takes off
Device, the moving contact connection of adjacent two groups of contact units are detained, static contact is provided with external wiring terminal, and the connection of two moving contacts
Circuit is provided with protection location；External wiring terminal is equipped with the static contact and moving contact of remaining one group of contact unit, and is provided with
Protection location.The present invention connects two groups of moving contacts, realizes multibreak internal series-connection, improves the work electricity of breaker
Pressure, less inner attachment points, reduces loop contact resistance, reduces the temperature rise of breaker, and multibreak series connection is set
Put in two groups of adjacent contact units, circuit is shorter, and amount of copper consuming is few.
Described pedestal includes being used for two insulating barriers be arrangeding in parallel, and two bar insulation dividing plates are by the inner space of pedestal
It is divided into three parallel placement spaces, three groups of contact units are separately positioned in three placement spaces.By setting insulating barrier,
Three groups of contact units is not interfered between each other, improve the stability of structure.
One of insulating barrier is provided with a groove, the moving contact of two groups of contact units for sharing external wiring terminal
Tail end is connected by conductor, and the conductor by groove through groove and being constrained, and the conductor is flexible connecting line or conductive plate, soft company
Wiring includes such as copper litz wire.
Contact unit described in every group includes a rotating shaft for being used to drive moving contact to rotate, and the rotating shaft includes rotatable
Shaft core and the supporting plate that is fixedly connected with shaft core, the tail end of the moving contact is through shaft core and tight with the upper surface in the middle part of supporting plate
Patch.When shaft core rotates, moving contact can be driven to be rotated around its tail end, realize the dynamic contact and separation touched with static contact；But by
Required power is larger when moving contact and static contact are in separation, so setting supporting plate, the stress point of moving contact is moved forward, led to
Lever principle is crossed, the power that moving contact head is subject to is bigger, ensures the quick separating of moving contact and static contact.
It is separately provided the static contact knot of one group of contact unit of external wiring terminal and one group of contact unit positioned at centre
Structure is identical, in horizontal positioned U-shaped, including lower plate and upper plate, the top of the lower plate is fixedly connected with external wiring terminal, described
Upper plate can contact connection with moving contact.
The static contact of remaining one group of contact unit is level board, the front end of level board and the shape and height of the upper front edge of board
Spend identical, the rear end of level board is fixedly connected by conductor with external wiring terminal, and the conductor is flexible connecting line or conductive plate, soft
Connecting line includes such as copper litz wire.
The protection location is overload and short-circuit protection electrical apparatus release.
Compared with prior art, beneficial effects of the present invention are embodied in following several respects：
(1) two groups of moving contacts are connected, realizes multibreak internal series-connection, improve the operating voltage of breaker；
(2) less inner attachment points, reduce loop contact resistance, reduce the temperature rise of breaker；
(2) multibreak is arranged in series in two groups of adjacent contact units, and circuit is shorter, and amount of copper consuming is few；
(3) contact and opening velocity of the moving contact with static contact are fast, and the reaction of whole mechanism is more rapidly.
Brief description of the drawings
Fig. 1 is the schematic diagram of the cascade structure of the present invention；
Fig. 2 is the structural representation of contact unit of the present invention.
Wherein, 1 is pedestal, and 11 be insulating barrier, and 12 be groove, and 2 be contact unit, and 21 be moving contact, and 22 be static contact,
221 be upper plate, and 222 be lower plate, and 223 be level board, and 23 be rotating shaft, and 231 be supporting plate, and 232 be shaft core, and 24 be external wiring terminal,
25 be conductive plate, and 26 be flexible connecting line, and 3 be overload and short-circuit protection electrical apparatus release.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
A kind of inside cascade structure for low-voltage direct breaker, its structure as shown in Figure 1 and Figure 2, the cascade structure bag
Three groups of contact units 2 for include pedestal 1, being arranged in pedestal 1 and two overloads and short-circuit protection electrical apparatus release 3, positioned at right side
The moving contact 21 of two groups of adjacent contact units 2 connects, and static contact 22 is provided with external wiring terminal 24, and two moving contacts 21
Connection line is provided with overload and short-circuit protection electrical apparatus release 3；Positioned at the static contact 22 and moving contact 21 of the contact unit 2 of the leftmost side
On be equipped with external wiring terminal 24, and provided with overload and short-circuit protection electrical apparatus release 3.Pedestal 1 includes what is be arranged in parallel for two
The inner space of pedestal 1 is divided into three parallel placement spaces, three groups of contact units by insulating barrier 11, two bar insulation dividing plates 11
2 are separately positioned in three placement spaces.And a groove 12 is provided with positioned at one piece of right side insulating barrier 11, two groups are shared outer
The tail end of the moving contact 21 of the contact unit 2 of binding post 24 is connected by flexible connecting line 26, and flexible connecting line 26 passes through groove 12
And constrained by groove 12.
Every group of contact unit 2 includes a rotating shaft 23 for being used to drive moving contact 21 to rotate, and rotating shaft 23 includes rotatable
Shaft core 232 and the supporting plate 231 being fixedly connected with shaft core 232, the tail end of moving contact 21 through shaft core 232 and with supporting plate 231
It is close to the upper surface in portion.When shaft core 232 rotates, moving contact 21 can be driven to be rotated around its tail end, realize dynamic tactile and static contact
22 contact and separation；But because moving contact 21 and static contact 22 power required in separation are larger, so supporting plate 231 is set,
The stress point of moving contact 21 is moved forward, by lever principle, the power that the head of moving contact 21 is subject to is bigger, ensures moving contact 21
With the quick separating of static contact 22.
The contact unit 2 of the leftmost side and positioned at centre one group of contact unit 2 the structure of static contact 22 it is identical, in level
That places is U-shaped, including lower plate 222 and upper plate 221, the top of lower plate 222 are fixedly connected with external wiring terminal 24, and upper plate 221 can
Connection is contacted with moving contact 21.
Static contact 22 positioned at the contact unit 2 of the rightmost side is level board 223, the front end of level board 223 with before upper plate 221
The shape at end and highly identical, the rear end of level board 223 is fixedly connected by conductive plate 25 with external wiring terminal 24.
Claims (9)
1. a kind of inside cascade structure for low-voltage direct breaker, the cascade structure includes pedestal, is arranged in pedestal
Three groups of contact units and two overloads and short-circuit protection electrical apparatus release, it is characterised in that wherein have two groups of adjacent contact units
Moving contact connection, static contact is provided with external wiring terminal, and the connection line of two moving contacts is provided with protection location；It is remaining
External wiring terminal is equipped with the static contact and moving contact of one group of contact unit, and is provided with protection location.
2. a kind of inside cascade structure for low-voltage direct breaker according to claim 1, it is characterised in that described
Pedestal include being used for two insulating barriers be arrangeding in parallel, two bar insulation dividing plates by the inner space of pedestal be divided into three it is parallel
Placement space, three groups of contact units are separately positioned in three placement spaces.
3. a kind of inside cascade structure for low-voltage direct breaker according to claim 2, it is characterised in that wherein
One piece of insulating barrier is provided with a groove, and the tail end of the moving contact of two groups of contact units for sharing external wiring terminal passes through conductor
Connection, the conductor are constrained through groove and by groove.
4. a kind of inside cascade structure for low-voltage direct breaker according to claim 3, it is characterised in that described
Conductor is flexible connecting line or conductive plate.
5. a kind of inside cascade structure for low-voltage direct breaker according to claim 1, it is characterised in that every group
Described contact unit include one be used for drive moving contact rotate rotating shaft, the rotating shaft include rotatable shaft core and with
The supporting plate that shaft core is fixedly connected, the tail end of the moving contact are close to through shaft core and with the upper surface in the middle part of supporting plate.
6. a kind of inside cascade structure for low-voltage direct breaker according to claim 1, it is characterised in that individually
Set the static contact structure of one group of contact unit of external wiring terminal and one group of contact unit positioned at centre identical, in level
That places is U-shaped, including lower plate and upper plate, the top of the lower plate are fixedly connected with external wiring terminal, and the upper plate can touch with dynamic
Head contact connection.
7. a kind of inside cascade structure for low-voltage direct breaker according to claim 6, it is characterised in that remaining
The static contact of one group of contact unit is level board, the shape of the front end of level board and the upper front edge of board and highly identical, horizontal
The rear end of plate is fixedly connected by conductor with external wiring terminal.
8. a kind of inside cascade structure for low-voltage direct breaker according to claim 7, it is characterised in that described
Conductor is flexible connecting line or conductive plate.
9. a kind of inside cascade structure for low-voltage direct breaker according to claim 1, it is characterised in that described
Protection location is overload and short-circuit protection electrical apparatus release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044710.4A CN107658194A (en) | 2017-10-31 | 2017-10-31 | A kind of inside cascade structure for low-voltage direct breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044710.4A CN107658194A (en) | 2017-10-31 | 2017-10-31 | A kind of inside cascade structure for low-voltage direct breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107658194A true CN107658194A (en) | 2018-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711044710.4A Pending CN107658194A (en) | 2017-10-31 | 2017-10-31 | A kind of inside cascade structure for low-voltage direct breaker |
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| Country | Link |
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| CN (1) | CN107658194A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914109A (en) * | 2016-07-06 | 2016-08-31 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN205863109U (en) * | 2016-07-06 | 2017-01-04 | 上海电科电器科技有限公司 | The galvanic circle of chopper |
| CN205863121U (en) * | 2016-07-06 | 2017-01-04 | 上海电科电器科技有限公司 | The sets of contacts of chopper |
| CN207398039U (en) * | 2017-10-31 | 2018-05-22 | 德力西电气有限公司 | A kind of inside cascade structure for low-voltage direct breaker |
-
2017
- 2017-10-31 CN CN201711044710.4A patent/CN107658194A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914109A (en) * | 2016-07-06 | 2016-08-31 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN205863109U (en) * | 2016-07-06 | 2017-01-04 | 上海电科电器科技有限公司 | The galvanic circle of chopper |
| CN205863121U (en) * | 2016-07-06 | 2017-01-04 | 上海电科电器科技有限公司 | The sets of contacts of chopper |
| CN207398039U (en) * | 2017-10-31 | 2018-05-22 | 德力西电气有限公司 | A kind of inside cascade structure for low-voltage direct breaker |
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