CN1120234A - Load switch with safe - Google Patents
Load switch with safe Download PDFInfo
- Publication number
- CN1120234A CN1120234A CN94119525A CN94119525A CN1120234A CN 1120234 A CN1120234 A CN 1120234A CN 94119525 A CN94119525 A CN 94119525A CN 94119525 A CN94119525 A CN 94119525A CN 1120234 A CN1120234 A CN 1120234A
- Authority
- CN
- China
- Prior art keywords
- fuse
- switch
- load switch
- insulation board
- load
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
-
- 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
Landscapes
- Fuses (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention provides a load switch which has high cooling effect and easy changing of fuses and can prevent destroy of an insulating board that is caused by an electric arc. The load switch comprises a contact terminal 7 in a power source side and a contact terminal in a load side of the load switch that can be electrified by rotating a movable wing tab 6; a fuse part that consists of a fuse clamp head 4 in the power source side and a fuse clamp head 14 in the load side; and an insulating board 1 that is arranged between each phase of each unit block at the same time when the load switch and the fuse part are arranged in a multiphase line side by side. The invention is characterized in that a concavo convex part is formed on the insulating board 1 in order to arrange a space between the insulating board 1 and the fuse 3.
Description
The present invention relates to heterogeneous switch of configuration load side by side and fuse, the load switch of the band fuse of insulation board is set between each unit that constitutes by load switch device and fuse simultaneously.
Fig. 4 represents the general structure of the load switch device of existing band fuse.
Load switch by the axle 11 that transmits power, by axle be bearing on this with this support unit 5 that rotates, by alignment pin 9 be fixed on the support unit 5 movable fin 6 and since switch and that be fixed on the power supply side terminal platform 13 conductively mains side contact terminal 7 of rotation of movable fin 6 form.
And fuse partly has the mains side fuse clip that is set on the power supply side terminal platform 13 4 and make insurance edge 3 between the centre and be fixed on load-side fuse clip 14 on the load side terminal platform 12.
In this specification,, utilize electric conductor 8 to connect the load switch of the switch of movable fin 6 and mains side fuse clip 4 as the single-phase zone fuse disposing an above-mentioned load switch and a fuse part abreast.
The load switch of present known band fuse is such: the heterogeneous load switch that disposes the single-phase zone fuse abreast, configuration insulation board 20 between each phase.
As above each alternate insulation board 20 of the load switch of the band fuse of structure generally is to guarantee the insulation effect that each is alternate with the tabular insulation board that materials such as phenol plate constitute.
Shorten because of the load switch miniaturization that makes the band fuse each alternate apart from the time, this just is difficult to guarantee the withdrawal space of fuse 3.
In addition, because the load switch miniaturization of band fuse, and make each alternate insulation board 20 near fuse, so, the air flows in the load switch of this just serious obstruction band fuse, thereby, cause the cooling effect of fuse to descend.
Also have,, can make the interior air heating of load switch device of band fuse, thereby air will expand, in derailing switch, produce superatmospheric pressure because of the electric arc of ground connection and phase fault generation.Directly bear this pressure and have damaged possibility because be in the insulation board of wanting on the limit air expanding position 20, therefore, must improve the intensity of insulation board 20.
In view of the above problems, it is convenient to the purpose of this invention is to provide a kind of replacing fuse, can prevent the load switch of the band fuse of the insulation board breakage that the electric arc because of generations such as ground connection causes when can improve the cooling effect of fuse.
In order to finish purpose of the present invention, the load switch of band fuse of the present invention is to constitute like this: on each alternate insulation board, the fuse withdrawal space is set, and be provided with the air of guaranteeing fuse cooling usefulness passage, avoid the space that causes pressure because of electric arc that ground connection and phase fault produce.
As shown in Figure 1, specifically, by realizing purpose of the present invention in that the space that jog 2 is provided with between insulating case 1 and the fuse 3 is set on the insulating case 1.
Owing in order between insulation board 1 and fuse 3, the space to be set jog 2 is set on insulation board 1,, therefore can makes alternate stenosis little because easily guaranteed the fuse withdrawal space.Thereby, whole derailing switch is dwindled.
Owing in order between insulation board 1 and fuse 3 space to be set jog 2 is set on insulation board 1, because guaranteed the passage of the cooling air of fuse, therefore, the temperature when running well of load switch inside that can the inhibition zone fuse rises.Thereby, the temperature of the load switch of just easy control band fuse.
Because electric arc because of ground connection and phase fault generation, make the air heating of the load switch inside of band fuse, air just expands, under the superatmospheric situation of pressure in the load switch device, by jog 2 is set, because the air in the load switch of bringing onto load fuse flows through jog 2, the pressure that therefore can avoid causing because of electric arc rises.Thereby, can prevent the breakage of insulation board 1.
Below, with reference to accompanying drawing embodiments of the invention are described.
Fig. 1 is the front view of structure of an embodiment of the load switch of expression band fuse of the present invention.
Fig. 2 is A among the figure-A sectional view.
Fig. 3 is B-B sectional view of Fig. 1.
Fig. 4 is the front view that the example that shows existing band fuse load switch is arranged.
Fig. 5 is the front view of structure of major part of other embodiment of the load switch of expression band fuse of the present invention.
Fig. 6 is the front view of structure of major part of another embodiment of the load switch of expression band fuse of the present invention.
Fig. 7 is the front view of structure of major part of another embodiment of the load switch of expression band fuse of the present invention.
Fig. 1 to Fig. 3 represents an embodiment of the load switch of band fuse of the present invention.
In these figure, load switch has the axle 11 that transmits switch power, be fixed on the axle 11 with this support unit 5 that rotates, by 9 one-tenth of alignment pins be rotatably supported on the support unit 5 movable fin 6 with by the rotation of movable fin 6 with mains side and load-side conductively switch and be installed in the mains side contact terminal 7 that links to each other with power supply on the power supply side terminal platform 13.
Fuse partly has: near load switch, that be connected conductively with above-mentioned movable fin 6 and be set on the power supply side terminal platform 13 in order to the mains side fuse clip 4 of installation insurance silk and be arranged on load-side fuse clip 14 on the load side terminal platform 12.
Disposing above-mentioned load switch and fuse part abreast, connect the load switch of the switch of movable fin 6 and mains side fuse clip 4 conductively as the single-phase zone fuse with electric conductor 8.
In the heterogeneous load switch that disposes the single-phase zone fuse abreast, in the load switch of the band fuse of each alternate configuration insulation board, if dwindle distance between alternate, because insulation board 1 near fuse 3, just can reduce the withdrawal space of fuse.
In the present embodiment, utilized at the jog 2 of using the space near the operation that for example forms on the insulation board 1 of fuse 3, and this part is the side that is positioned at fuse 3 with insulation board one-body moldedly by the cast molding method.Thus, guaranteed working space in insulation board 1 side of fuse 3.Thereby, just can dismantle fuse 3 at an easy rate.
Owing to utilized at the jog 2 of using the space near the operation that forms by the cast molding method on the insulation board 1 of fuse 3, and this part is the side that is positioned at fuse 3 with insulation board one-body moldedly, and air just flows in the space between fuse 3 and insulation board 1 at an easy rate.Thereby, when normal operation, can improve the cooling effect of fuse, also just control the internal temperature of fuse-switch unit easily.
In addition, when being in irregular operating, can prevent that the pressure that is produced by electric arc from rising.Thereby,, thereby also just can prevent the breakage of insulation board 1 because can avoid rising by the pressure of electric arc generation.
Fig. 5 has represented that purpose is same as the previously described embodiments, but a variform other embodiment of insulation board.Embodiment shown in this Fig, 2 one-tenth curved surface shapes of the jog on the insulation board 1.Whereby, concentrate, therefore, also can make each alternate distance shorter than the phase spacing of embodiment shown in Figure 1 because can alleviate electric field and stress.
Fig. 6 represents variform another embodiment of insulation board.In the present embodiment, in two places of mains side fuse clip 4 and load-side fuse clip 12 and a place of the middle part of the removed position of fuse be provided with jog 2.Like this, tightening operation is very convenient, and the dismounting of fuse simultaneously also is easy to.
Fig. 7 is illustrated in the different embodiment in position of the jog on the insulation board 1.In the present embodiment because because guarantee that operation is arranged in figure fuse 3 with the jog in space the centre of removed position on the lower side on the position of side, defines the position of hand-held fuse 3, therefore, removal force is partial to a side.Thereby, when dismounting fuse 3, mains side fuse clip 4 as fulcrum, being utilized lever principle, can easily from load-side chuck 14, pull down fuse.
Above basis is applicable to that the embodiment of fuse-switch unit has illustrated the present invention, but the present invention in addition, is applicable to that also alternate switch and the insulation board that insulation board is set that forms at fuse itself makes on the switch of operation decline.
According to the present invention, owing to carry out the dismounting of fuse with comparalive ease, because the operation high efficiency can guarantee operation really.
Because can guarantee around fuse by being arranged on the space that the insulation board jog forms, thereby can improve the cooling effect of fuse.Thereby,, can prevent the fault that rises and cause by temperature because control the internal temperature of fuse-switch unit easily.
By jog is set on insulation board, the pressure that causes owing to the electric arc because of generations such as ground connection rises, avoid by being formed on the outside that jog on the insulation board makes air in it escape to fuse-switch unit outward, thereby can alleviate the pressure that the insulation board body is subjected to, can make the thickness of insulation board thinner than existing.Therefore, can alleviate the weight of the load switch of band fuse.
Claims (4)
1. the load switch with fuse is comprising load switch, fuse part and insulation board; This load switch by the movable fin that movably is bearing on the support unit is rotated switch on switch the mains side contact terminal and the load-side contact terminal that are connected with power supply; This fuse part is by constituting with above-mentioned movable fin mains side fuse clip that be connected conductively, that fuse is housed and load-side fuse clip near this load switch; And heterogeneous dispose above-mentioned load switch and fuse part abreast in, each of each cell block that load switch and insurance part constitute is provided with in the switch of insulation board between mutually,
It is characterized in that on above-mentioned insulation board, being formed with jog in order between above-mentioned insulation board and fuse, the space to be set.
2. switch according to claim 1 is characterized in that the jog of above-mentioned insulation board is divided into the curved surface shape.
3. switch according to claim 1 is characterized in that being formed with a plurality of jogs on above-mentioned insulation board.
4. switch according to claim 1, the place beyond the middle part of the removed position that it is characterized in that making above-mentioned jog be offset to above-mentioned fuse.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP318412/93 | 1993-12-17 | ||
| JP31841293A JP3151503B2 (en) | 1993-12-17 | 1993-12-17 | Load switch with fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1120234A true CN1120234A (en) | 1996-04-10 |
| CN1046371C CN1046371C (en) | 1999-11-10 |
Family
ID=18098866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94119525A Expired - Fee Related CN1046371C (en) | 1993-12-17 | 1994-12-16 | Load switch with safe |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3151503B2 (en) |
| KR (1) | KR100342368B1 (en) |
| CN (1) | CN1046371C (en) |
| TW (1) | TW315978U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100463600B1 (en) * | 2001-12-07 | 2004-12-29 | 엘지산전 주식회사 | Ring Main Unit with inner mounting type fuse-housing of gas insulation tank |
| JP7123023B2 (en) * | 2019-10-17 | 2022-08-22 | 三菱電機株式会社 | Isolation barriers and switchgear |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO854721L (en) * | 1984-11-28 | 1986-05-29 | Dubilier Plc | DEVICE FOR THE PROTECTION OF AN ELECTRIC CIRCUIT FROM DAMAGE SIGNALS. |
| US5162625A (en) * | 1991-01-22 | 1992-11-10 | Eaton Corporation | Switch assembly |
-
1993
- 1993-12-17 JP JP31841293A patent/JP3151503B2/en not_active Expired - Fee Related
-
1994
- 1994-09-22 TW TW085212878U patent/TW315978U/en unknown
- 1994-10-14 KR KR1019940026328A patent/KR100342368B1/en not_active IP Right Cessation
- 1994-12-16 CN CN94119525A patent/CN1046371C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3151503B2 (en) | 2001-04-03 |
| TW315978U (en) | 1997-09-11 |
| KR100342368B1 (en) | 2002-11-20 |
| CN1046371C (en) | 1999-11-10 |
| JPH07169357A (en) | 1995-07-04 |
| KR950020844A (en) | 1995-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |