CN203179828U - Household fuse box - Google Patents
Household fuse box Download PDFInfo
- Publication number
- CN203179828U CN203179828U CN 201320069397 CN201320069397U CN203179828U CN 203179828 U CN203179828 U CN 203179828U CN 201320069397 CN201320069397 CN 201320069397 CN 201320069397 U CN201320069397 U CN 201320069397U CN 203179828 U CN203179828 U CN 203179828U
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- China
- Prior art keywords
- phase
- fuse
- casing
- handle cover
- indicator
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- Expired - Lifetime
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Abstract
The utility model discloses a household fuse box, comprising a box body provided with a viewing port at a right side; wherein an upper end of the box body is provided with three-phase input binding posts, a lower end of the box body is provided with three-phase output binding posts, a contact position of a bus of the each phase in the box body is provided with an arc extinguishing cover; the house lead-in fuse box also comprises fuses, blown fuse indicators, and a handle cover, the fuses are respectively arranged at the contact position of the bus of the each phase and used for conducting a current of the phase, the blown fuse indicators are respectively clamped on the fuse of the each phase and connected in parallel with the fuse of the phase, the handle cover is hinged on the viewing port of the box body, an inner side of the handle cover is provided with clamping devices which are respectively capable of clamping the blown fuse indicator of the each phase, and an outer side of the handle cover is provided with controllers used for adjusting clamping degrees of the clamping devices. The household fuse box of the utility model has the advantages of capacity for breaking independently in a single-phase way, higher safety, and convenient installation and use.
Description
Technical field
The utility model belongs to circuit emergency protective device technical field.
Background technology
At present, the common supply power mode of China is three-phase five-wire mode, and the voltage between phase and the zero line is 220V, and voltage between phase and phase is 380V.House lead in cable box common in the electric power system is equipped with circuit breaker usually, and existing circuit breaker generally is made of contact system, arc quenching system, operating mechanism, release, shell etc.When short circuit, the magnetic field that big electric current (general 10 to 12 times) produces overcomes reaction spring, release pull operation mechanism action, the instantaneous tripping operation of switch.When overload, it is big that electric current becomes, the caloric value aggravation, and bi-metal plate deformed is carried out overload protection to a certain degree pushing mechanism action (electric current is more big, and operate time is more short).Electron type is arranged now, uses instrument transformer to gather each phase current size, with set point relatively, microprocessor sends signal when current anomaly, makes electronic trip unit drive the operating mechanism action.
The shortcoming of such scheme is: at first, circuit breaker does not have the function that phase-splitting disconnects, in case tripping operation, then three-phase all disconnects, and influences the electricity consumption at all power supply families; Secondly, existing circuit breaker wiring complexity has certain installation difficulty, and circuit breaker can not avoid the peak valley electric current when using, and tripping operation is frequent, needs the user to close a floodgate voluntarily when trip condition occurring; Again, existing house lead in case is iron shell, and on-insulated, easily aging corrosion, fail safe are lower.
The utility model content
The utility model is intended to provide a kind of and can be single-phase independently disconnects, fail safe house lead in fuse box higher, easy to install and use.
The purpose of this utility model can reach by following measure: a kind of house lead in fuse box, comprise that the front has the casing of observation panel, the casing upper end is provided with the three-phase lead-in clamp, the casing lower end is provided with the three-phase output wiring terminal, place, the contact of every phase bus is equipped with arc-extinguish chamber in the casing, also comprise fuse, blown fuse indicator, handle cover, described fuse is installed on place, contact and this phase current of conducting of every phase bus respectively, blown fuse indicator is fastened in going up of every phase fuse and in parallel with this phase fuse, described handle cover is articulated on the casing observation panel, this handle cover inboard is respectively equipped with the clamping device that can fix every phase blown fuse indicator, and the handle outside has the controller of regulating the clamping device clamping degree.
The technique scheme difference with the prior art is: fuse is connected on every phase bus, can carry out short circuit and overload protection to every phase current respectively; Blown fuse indicator is in parallel with fuse, when fuse opens circuit, and the blown fuse indicator conducting, indicator light is bright, can inform that this phase current of user opens circuit, and makes things convenient for the user to change fuse; After certain phase fuse blows, regulate the controller on the other two-phase handle cover, make the clamping device of corresponding phase unclamp with the blown fuse indicator of corresponding phase, and that phase blown fuse indicator that blow this moment still is clamped on the handle cover, because blown fuse indicator and fuse also fix, pull handle cover, the fuse that will blow is extracted from this phase bus contact, and all the other two-phase blown fuse indicators and fuse are still stayed in the casing, continue to keep the conducting of two-phase electricity, the user of this two-phase electricity is unaffected.
Further, in order to reduce cost, to save the installing space in the line protecting box, every phase clamping device adopts the cam of the upper and lower side of two blown fuse indicators that lay respectively at corresponding phase, and controller is the knob of each cam of rotation.
Further, in order to prevent the wrong zero line, described casing side is provided with the zero line box of independent access zero line, and in order to prevent people's mistake spanner handle lid, casing is threaded and covers the safe cover cap of handle cover upper end.
Further, in order to prevent interference between phase and phase, be provided with insulating barrier between the three-phase clamping device of described handle cover inboard, for the ease of observing the blown fuse indicator of handle cover inboard, handle cover is provided with transparent panel.
Further, in order to improve casing intensity and insulation property, described casing is the high-strength engineering plastic casing.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural representation of facing of the utility model house lead in fuse box embodiment;
Fig. 2 is the internal structure schematic diagram (safe cover cap takes off among the figure) of the utility model house lead in fuse box embodiment.
Embodiment
See figures.1.and.2, a kind of house lead in fuse box comprises high-strength engineering plastic casing 1, and casing 1 front has observation panel, and casing 1 back side is installed surface.Casing 1 upper end is provided with the three-phase lead-in clamp, and casing 1 lower end is provided with the three-phase output wiring terminal, and place, the contact of every phase bus is equipped with arc-extinguish chamber 2 in the casing, and fuse 3 blocks place, contact and this phase current of conducting that is put in every phase bus respectively.Every phase fuse 3 two ends have ear respectively, and blown fuse indicator 4 two ends have the draw-in groove of ear's cooperation therewith, and blown fuse indicator 4 is connected on fuse 3 by draw-in groove and ear, and form in parallel with fuse 3.Blown fuse indicator 4 comprises resistance and the Light-Emitting Diode of mutual series connection, during fuse 3 normal conductions blown fuse indicator 4 is formed short circuits, when fuse 3 blows owing to situations such as current overloads, and the led lighting of blown fuse indicator 4.
Fixedly there is the zero line box 10 of independent access zero line described casing 1 side, is connected with safe cover cap 11 and stamps lead sealing by screw on the described casing 1, and this safe cover cap 11 can cover the upper end of handle cover 5.
Using method: after the indicator light in handle cover 5 transparent panels (namely being diode) lights, represent this phase fuse 3 and blow, need change.Rotate during replacing other two-phase blown fuse indicator 4 correspondences on, downside knob 9, making knob 9 indication point dorsad---two-phase cam 8 unclamps corresponding two-phase blown fuse indicator 4, the cam 8 of the phase that opens circuit still clamps this blown fuse indicator 4, and------fuse 3 of pulling handle cover 5 downwards and open circuit---fuse 3 that the blown fuse indicator of the phase that then opens circuit 4 can will blow is extracted---this moment phase is positioned at handle cover 5 to open safe cover cap 11, the workman replaces new fuse 3 in handle cover 5---upwards pulling handle cover 5 is combined on the observation panel it---, and new fuse 3 contacts with this phase bus contact, on this phase current of conducting---safe cover cap 11 closes---turn replacement phase, downside knob 9 makes knob 9 point to indication point 12.
Above-described only is preferred implementation of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite that does not break away from the utility model structure; can also make some distortion and improvement; these also should be considered as protection range of the present utility model, and these can not influence effect and practical applicability that the utility model is implemented.
Claims (5)
1. house lead in fuse box, comprise that the front has the casing of observation panel, the casing upper end is provided with the three-phase lead-in clamp, the casing lower end is provided with the three-phase output wiring terminal, place, the contact of every phase bus is equipped with arc-extinguish chamber in the casing, it is characterized in that: also comprise fuse, blown fuse indicator, handle cover, described fuse is installed on place, contact and this phase current of conducting of every phase bus respectively, blown fuse indicator is fastened on every phase fuse and is in parallel with this phase fuse, described handle cover is articulated on the casing observation panel, this handle cover inboard is respectively equipped with the clamping device that can fix every phase blown fuse indicator, and the handle outside has the controller of regulating the clamping device clamping degree.
2. house lead in fuse box according to claim 1, it is characterized in that: described every phase clamping device comprises two cams, and two cams lay respectively at the upper and lower side of the blown fuse indicator of corresponding phase, and described controller comprises the knob of each rotating cam.
3. house lead in fuse box according to claim 1 and 2, it is characterized in that: described casing side is provided with the zero line box of independent access zero line, and described casing is threaded and covers the safe cover cap of handle cover upper end.
4. house lead in fuse box according to claim 3, it is characterized in that: be provided with insulating barrier between the three-phase clamping device of described handle cover inboard, handle cover is provided with transparent panel.
5. house lead in fuse box according to claim 1 and 2, it is characterized in that: described casing is the high-strength engineering plastic casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069397 CN203179828U (en) | 2013-02-06 | 2013-02-06 | Household fuse box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069397 CN203179828U (en) | 2013-02-06 | 2013-02-06 | Household fuse box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203179828U true CN203179828U (en) | 2013-09-04 |
Family
ID=49076491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320069397 Expired - Lifetime CN203179828U (en) | 2013-02-06 | 2013-02-06 | Household fuse box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203179828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576256A (en) * | 2015-01-26 | 2015-04-29 | 邹中宝 | Multi-pass fuse box |
| CN107968330A (en) * | 2017-12-11 | 2018-04-27 | 广东光乐电力科技有限公司 | A kind of knife melts formula bus duct tapping unit |
-
2013
- 2013-02-06 CN CN 201320069397 patent/CN203179828U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576256A (en) * | 2015-01-26 | 2015-04-29 | 邹中宝 | Multi-pass fuse box |
| CN107968330A (en) * | 2017-12-11 | 2018-04-27 | 广东光乐电力科技有限公司 | A kind of knife melts formula bus duct tapping unit |
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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: 20130904 |
|
| CX01 | Expiry of patent term |