CN203312208U - Residual-current circuit breaker - Google Patents
Residual-current circuit breaker Download PDFInfo
- Publication number
- CN203312208U CN203312208U CN2013203033205U CN201320303320U CN203312208U CN 203312208 U CN203312208 U CN 203312208U CN 2013203033205 U CN2013203033205 U CN 2013203033205U CN 201320303320 U CN201320303320 U CN 201320303320U CN 203312208 U CN203312208 U CN 203312208U
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- Prior art keywords
- residual current
- spacing contact
- residual
- contact
- circuit breaker
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Abstract
The utility model discloses a residual-current circuit breaker. The residual-current circuit breaker comprises a circuit breaker unit (1) and a residual-current release (3). The residual-current circuit breaker is characterized in that an insulating contact pair (31) and a detachable contact bridge device (2) are fixedly arranged in at least one power supply input circuit of the residual-current release (3) and connected in series; the contact bridge device (2) is provided with a conductive bridge (21) corresponding to the insulating contact pair (31); the conductive bridge (21) straddles the corresponding isolating contact pair (31) and contacts with two contacts of the isolating contact pair (31), such that the two contacts of the isolating contact pair (31) are electrically connected; and the residual-current release is provided with a high-voltage isolating groove in which a high-voltage isolating plate is embedded, such that the high-voltage and low-voltage parts of the residual-current release are effectively isolated. According to the utility model, the residual-current release can be connected or disconnected by only detaching the contact bridge device on the surface of the residual-current circuit breaker, and the internal power supply connection wire of the residual-current release is not needed to be detached, so that the requirements of dielectric property tests are satisfied, and the circuit breaker is convenient in use, simple in structure and reliable in operation.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, is specifically related to residual current circuit breaker.
Background technology
Residual current circuit breaker is mainly used in providing direct or indirect contact protection to human body, or can not detected long-standing earth fault may cause that fire hazard provides protection to overcurrent protection.And the electronic type residual current circuit breaker is highly sensitive and multiple functional with it, be widely used.
As protectiveness electrical equipment, no matter in the GB14048.1 standard, or the user all can carry out dielectric property test (test class is 2KV or higher) to circuit breaker before normally using.And common electronic type residual current circuit breaker is all to adopt residual current circuit breaker relevant with supply voltage on function in the market, namely the residual current trip power supply connects row from circuit breaker and chooses, and adopts self-powered mode.When carrying out the dielectric property test, residual current trip can must be carried out from connecting the upper dismounting of row, and the user may not remove residual current trip, final result is not that the reduction test voltage is exactly not do the dielectric property test, causes the isolation performance of this electrical equipment is thoroughly confirmed.If select on function the residual current circuit breaker with independent of power voltage, must add an external power module, adopt the mode of outer power supply, cause installation volume to increase, limited installation and the use of residual current circuit breaker at a lot of special occasions.
Summary of the invention
The purpose of this utility model is to provide a kind of residual current circuit breaker, the problem of being inconvenient to carry out the dielectric property test to solve prior art.
For achieving the above object, the technical solution adopted in the utility model is: a kind of residual current circuit breaker, comprise breaker unit, residual current trip, at least one electric power incoming line of described residual current trip, be serially connected with the spacing contact that is fixedly installed to the tactile Biodge device with detachable installation; One contact of described spacing contact centering connects electric power incoming line, and another right contact of spacing contact connects the power circuit of residual current trip; On described tactile Biodge device, corresponding spacing contact is to being provided with conducting bridge; Described conducting bridge contacts two right contacts of upper and spacing contact across corresponding spacing contact, and two contacts that spacing contact is right are electrically connected to; Described conducting bridge is elastic spring.
Technique scheme changes and is explained as follows:
1, in such scheme, breaker unit major loop and residual current trip are electrically connected.
2, in such scheme, the upper surface of described spacing contact to that end of the leading-out terminal of the close breaker unit of being located at residual current trip; Described tactile Biodge device also comprises an insulation board, and this insulation board is covered in the upper surface of the end of incoming cables of residual current trip, on the inner face of insulation board over against spacing contact to described conducting bridge is set.
3, in such scheme, circuit breaker can be two-phase, can be also three-phase, or four phases.Three phase times, preferred version is as follows: described spacing contact is to being two: the first spacing contact to the second spacing contact pair; Described residual current trip connects three phase mains, serial connection the first spacing contact pair on one phase electric power incoming line, serial connection the second spacing contact pair on its another phase electric power incoming line, on relative described tactile Biodge device, also be provided with two conducting bridges, this two conducting bridge and the first spacing contact are to contacting electrical connection with the second spacing contact to corresponding.Two phase times, spacing contact are one to quantity and get final product, and it is gone here and there on the power firestreak inlet wire, and relative conducting bridge also needs only one, and another is zero line mutually.
4, in such scheme, described " detachable installation " comprised various removable syndetons, such as screw, elastic fastening hook etc.
5, in such scheme, the pcb board of described residual current trip be provided with by spacing contact to the separated high pressure isolation channel of residual current trip light current circuit, on the correspondence position of the case on residual current trip, be provided with the high pressure division board; During installation, the high pressure division board embeds the high pressure isolation channel.
Design principle of the present utility model and advantage are: the utility model increases spacing contact pair by the power inleting terminal at residual current trip, and configure one and touch Biodge device, should touch on Biodge device corresponding to spacing contact being provided with conducting bridge, conducting bridge and spacing contact namely form an isolating switch to matching.Residual current trip is provided with the high pressure isolation channel, embeds the high pressure division board, before doing the dielectric property test, can namely equal to turn-off isolating switch by pulling down tactile Biodge device, disconnects the power supply of residual current trip; After dielectric property tests, then will touch Biodge device and reset, namely equal to open isolating switch, residual current trip will be switched on power, meet the requirement of dielectric property test.The utility model residual current circuit breaker need not be removed the power supply wiring of inner residual current trip, the tactile Biodge device of only removing the residual current circuit breaker surface just can be switched on or switched off residual current trip, meet the requirement of dielectric property test, very easy to use, not only simple in structure but also reliable operation.
The accompanying drawing explanation
Fig. 1 is the contour structures schematic diagram of the utility model embodiment;
Fig. 2 is that the utility model embodiment is removing the contour structures schematic diagram touched under the Biodge device state;
Fig. 3 is that the utility model embodiment touches Biodge device inner face front elevational schematic outwardly;
Fig. 4 is that the utility model embodiment touches the Biodge device schematic side view;
Fig. 5 is the profile schematic diagram of the residual current trip of the utility model embodiment;
Fig. 6 is the power circuit principle block diagram of the residual current trip of the utility model embodiment;
Fig. 7 is the outside schematic diagram of the utility model embodiment case;
Fig. 8 is the inboard schematic diagram of the utility model embodiment case.
In above accompanying drawing: 1, breaker unit; 2, touch Biodge device; 21, conducting bridge; 211, conducting bridge end points; 212, conducting bridge end points; 213, conducting bridge end points; 214, conducting bridge end points; 22, insulation board; 3, residual current trip; 31, spacing contact pair; 311, spacing contact; 312, spacing contact; 313, spacing contact; 314, spacing contact; 32, current-limiting circuit; 33, overvoltage crowbar; 34, rectification circuit; 35, voltage stabilizing circuit; 36, DC-DC circuit; 37, high pressure isolation channel; 4, screw; 5, case; 51, high pressure division board.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: referring to Fig. 1-shown in Figure 8:
A kind of residual current circuit breaker, comprise breaker unit 1, residual current trip 3, case 5.
On the electric power incoming line of described residual current trip 3, be serially connected with the spacing contact that is fixedly installed to 31 and the detachable tactile Biodge device 2 of installing.Described spacing contact connects power supply to the contact in 31, and another right contact of spacing contact connects the power circuit of residual current trip 3, as shown in Figure 6.
Described tactile Biodge device 2 is detachable to be installed on residual current trip 3, touches corresponding spacing contact on Biodge device 2 and is provided with conducting bridge 21 to 31; Described conducting bridge 21, is electrically connected to spacing contact with spacing contact, 31 two contacts being contacted on 31 across corresponding spacing contact to 31 two contacts.
Specifically as shown in Fig. 3-6, described spacing contact is two to 31: the first spacing contact to the 311 and 312 and second spacing contact to 313 and 314.Described residual current trip 3 connects three phase mains, and serial connection the first spacing contact is to 311 and 312 on one phase (being illustrated as the A phase) electric power incoming line, and serial connection the second spacing contact is to 313 and 314 on its another phase (being illustrated as the C phase) electric power incoming line.Relative, on described tactile Biodge device 2, also being provided with two conducting bridges 21, in this two conducting bridge 21, the two-end-point of a conducting bridge is 211,212, the two-end-point of another conducting bridge is 213 and 214.The end points 211,212,213,214 of two conducting bridges 21 and the first spacing contact to 311 with 312 with the second spacing contact to 313 corresponding with 314 contact be electrically connected to after, be about to residual current trip 3 access power source buss.
Described conducting bridge 21 adopts the elastic spring of bending better, and reed has elasticity, and in the time of guaranteeing to be connected 31 with spacing contact, contact closely.
See illustrated in figures 1 and 2ly, described spacing contact is to 31 upper surfaces of that end (being end of incoming cables) of leading-out terminal of being located at the close breaker unit 1 of residual current trip 3; Described tactile Biodge device 2 also comprises an insulation board 22; this insulation board 22 is covered in the upper surface of the end of incoming cables of residual current trip 3; on the inner face of insulation board 22, to 31, described conducting bridge 21 is set over against spacing contact; further; insulation board 22 extends to the breaker unit direction, makes to touch Biodge device 2 and also the leading-out terminal of breaker unit 1 is played a protective role.In capping, touch the state of Biodge device 2 as shown in Figure 1, the leading-out terminal of breaker unit 1 is insulated plate 22 and has covered.Remove the state of tactile Biodge device 2 as shown in Figure 2, the spacing contact on the leading-out terminal of breaker unit 1 and residual current trip 3 exposes 31.Touch Biodge device 2 and specifically adopt screw 4 to be fixed on the place, end of incoming cables of residual current trip 3, namely touching Biodge device 2 is by this detachable installation of screw.Preferably, touch Biodge device 2 and fix by screw 4 and the case of residual current trip 3, or fix with the wiring board of the power circuit of residual current trip 3.
Referring to Fig. 6, the power circuit for the residual current trip 3 of this patent, be comprised of current-limiting circuit 32, overvoltage crowbar 33, rectification circuit 34, voltage stabilizing circuit 35, DC-DC circuit 36.Spacing contact, to 31 power inputs that are arranged on residual current trip, is kept apart by insulating barrier with remaining circuit.In the present embodiment, power circuit adopts the three phase mains access, wherein in the two-phase power supply line attachment, is provided with spacing contact 31.Can certainly in the three phase mains line attachment, spacing contact 31 all be set.Current-limiting circuit 32 is comprised of three power resistors, preferentially adopts wire-wound resistor, and it will be defeated by overvoltage crowbar 33 after the alternating voltage current limliting of three-phase circuit input; Overvoltage protecting unit 33 is comprised of tri-transition noise killer spares of RV1 ~ RV3, preferentially adopts piezo-resistance, to suppress the destruction of the surge voltage of being introduced by alternating current circuit to late-class circuit; At interference voltage, after suppressing, be connected to the rectification circuit 34 consisted of the diode full-bridge circuit, it converts alternating voltage to direct voltage; Voltage stabilizing circuit 35 is comprised of metal-oxide-semiconductor V1, resistance R 4, voltage-stabiliser tube D1, and the direct voltage that rectification circuit 34 is sent here carries out step-down voltage stabilizing, for magnetic flow convertor provides stable voltage; The direct voltage that DC-DC circuit 36 is mainly sent voltage stabilizing circuit 35 here converts the operating voltage that the central processing unit circuit needs to, and further reduces the power consumption of power circuit.
Referring to Fig. 5, Fig. 7 and Fig. 8, residual current trip 3 is provided with high pressure isolation channel 37, on the correspondence position of case 5, is provided with high pressure division board 51; During installation, high pressure division board 51 embeds high pressure isolation channel 37, makes forceful electric power zone and light current zone on residual current trip 3 effectively isolate the reliability that improves residual current trip 3.
The present embodiment need not be removed the power supply wiring of inner residual current trip, the tactile Biodge device of only removing the residual current circuit breaker surface just can be switched on or switched off residual current trip, meet the requirement of dielectric property tests, very easy to use, not only simple in structure but also reliable operation.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (4)
1. residual current circuit breaker, comprise breaker unit (1), residual current trip (3), it is characterized in that: at least one electric power incoming line of described residual current trip (3), be serially connected with the spacing contact that is fixedly installed to (31) and the detachable tactile Biodge device (2) of installing; Described spacing contact connects electric power incoming line to the contact in (31), and another right contact of spacing contact connects the power circuit of residual current trip (3); The upper corresponding spacing contact of described tactile Biodge device (2) is provided with conducting bridge (21) to (31); Described conducting bridge (21) contacts with two contacts of spacing contact to (31) (31) are upper across corresponding spacing contact, and two contacts of spacing contact to (31) are electrically connected to; Described conducting bridge (21) is elastic spring.
2. residual current circuit breaker according to claim 1 is characterized in that: described spacing contact is located at the upper surface of that end of leading-out terminal of the close breaker unit (1) of residual current trip (3) to (31); Described tactile Biodge device (2) also comprises an insulation board (22), and this insulation board (22) is covered in the upper surface of the end of incoming cables of residual current trip (3), over against spacing contact, (31) is arranged to described conducting bridge (21) on the inner face of insulation board (22).
3. residual current circuit breaker according to claim 1, it is characterized in that: described spacing contact is two to (31): the first spacing contact to the second spacing contact pair; Described residual current trip (3) comprises two electric power incoming lines at least, serial connection the first spacing contact is to (31) on the one electric power incoming line, serial connection the second spacing contact is to (31) on its another electric power incoming line, on relative described tactile Biodge device (2), also be provided with two conducting bridges (21), this two conducting bridge (21) and the first spacing contact contact electrical connection to (31) and the second spacing contact to (31) are corresponding.
4. residual current circuit breaker according to claim 1, it is characterized in that: the pcb board of described residual current trip (3) is provided with spacing contact (31) and the separated high pressure isolation channel of residual current trip (3) light current circuit (37), is provided with high pressure division board (51) on the correspondence position of the case (5) on residual current trip (3); During installation, high pressure division board (51) embeds high pressure isolation channel (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203033205U CN203312208U (en) | 2013-05-30 | 2013-05-30 | Residual-current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203033205U CN203312208U (en) | 2013-05-30 | 2013-05-30 | Residual-current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312208U true CN203312208U (en) | 2013-11-27 |
Family
ID=49618395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203033205U Expired - Lifetime CN203312208U (en) | 2013-05-30 | 2013-05-30 | Residual-current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312208U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257295A (en) * | 2015-06-19 | 2016-12-28 | 浙江正泰电器股份有限公司 | Chopper |
| CN108269717A (en) * | 2016-12-30 | 2018-07-10 | Ls产电株式会社 | For the breaker of plastic casing of DC |
-
2013
- 2013-05-30 CN CN2013203033205U patent/CN203312208U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257295A (en) * | 2015-06-19 | 2016-12-28 | 浙江正泰电器股份有限公司 | Chopper |
| CN106257295B (en) * | 2015-06-19 | 2023-09-12 | 浙江正泰电器股份有限公司 | Circuit breaker |
| CN108269717A (en) * | 2016-12-30 | 2018-07-10 | Ls产电株式会社 | For the breaker of plastic casing of DC |
| US10483065B2 (en) | 2016-12-30 | 2019-11-19 | Lsis Co., Ltd. | Molded-case circuit breaker for DC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
|
| CX01 | Expiry of patent term |