CN2279021Y - Isolated single phase protection switch - Google Patents
Isolated single phase protection switch Download PDFInfo
- Publication number
- CN2279021Y CN2279021Y CN 96243291 CN96243291U CN2279021Y CN 2279021 Y CN2279021 Y CN 2279021Y CN 96243291 CN96243291 CN 96243291 CN 96243291 U CN96243291 U CN 96243291U CN 2279021 Y CN2279021 Y CN 2279021Y
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- CN
- China
- Prior art keywords
- switch
- isolated single
- protection switch
- protection
- single phase
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a device which can implement protection to overload, short circuit, electrical leakage and over voltage occurring in single-phase power utilization. The isolated single phase protection switch can implement short circuit protection to iron cores and armatures of short circuit trip coils and common voltage trip coils. The isolated single phase protection switch gathers a knife switch and a protective switch into one body. While used, a switch box is rotated to make the blade of the knife switch inserted into a card type fixed contact head on a base seat; the automatic switch box is closed, and the line is switched on; in reverse, the line is switched off. The utility model has the advantages of compact structure, reasonable and reliable structure and low manufacture cost, and avoids the unsafety caused by improper fuse use of users and in the process of replacing the fuse. The isolated single phase protection switch is an ideal product for replacing the older generation.
Description
The utility model relates to the protective device of various irregular operating states in a kind of single-phase electricity consumption, belongs to Electrical Safety resist technology field.
The present single-phase leakage switch device of producing and using, the overwhelming majority can only be implemented protection to electric leakage and overvoltage, and overload or short circuit is still the way realization of taking adapted fuse (or cartridge fuse) to add plug-in strip.Wherein fuse (or cartridge fuse) requires user oneself to be equipped with.Yet in actual use, a lot of users often can not dispose in requirement according to the rules, have therefore caused the situation of not having overload or short-circuit protection in fact.Even the requirement in accordance with regulations that has has been disposed, in case but fuse (or cartridge fuse) damage, the user just oneself changes, and its operation was both inconvenient, dangerous again.
The purpose of this utility model provides a kind of can the protection the various major failures enforcements that single-phase electricity consumption occurs, and union plug-in strip and automatic switch are the isolated single phasing protection switch of one.
The purpose of this utility model is to realize like this.
Constitute by base, switch enclosure and protective circuit device; automatic switch and protective circuit all are located in the switch enclosure; automatic switch main contact place is provided with arc-extinguish chamber; its major technique is characterised in that the attached knife switch cassette fixed contact of each binding post on the base; and the two fuses; on the switch enclosure also correspondence be provided with cassette fixed contact knife switch blade; a phase terminal of automatic switch moving contact connects reactance transformer in the protective circuit; with another phase terminal behind the outer winding number circle of the voltage trip coil of protection switch, pass leakage current transformer in the same way.
Other technical characterictic of the present utility model is: the reactance transformer magnetic circuit adopts the low permeability soft iron; public iron core of short circuit tripping coil and voltage trip coil and armature; and the base of protection switch and switch enclosure are two independent parts separately, with plug-in type hinge the two are rotationally connected.
The utility model is obtained the voltage signal of load by reactance transformer, implements overload protection, and its short-circuit protection is to be made of electric current, the public iron core of voltage trip coil and armature.In the line, chance overload, short circuit, overvoltage, electric leakage all act on tripping operation.Draw back switch enclosure, then the knife switch blade breaks away from the cassette fixed contact, forms obvious breakpoint, transfers to hinge to insert and sends, and switch enclosure can unload repairing, need not to tear open power line.In case fault is eliminated, the protection switch that closes again, circuit can be connected.
The utility model has been realized the integrated of knife switch and various circuit protections; both saved material; reduce the installation site, avoided the user to change the trouble of fuse and dangerous voluntarily again, had compact conformation, the reasonable advantage of reliable, cheap, safe ready.
Accompanying drawing 1 is the front view and the right view of the utility model base.
1 is base among Fig. 1, the 2nd, and the hinge jack, the 3rd, the inlet wire contact of knife switch cassette fixed contact, 4 is the outlet contact of knife switch cassette fixed contact.
Accompanying drawing 2 is front view and right views of the utility model switch enclosure.
5 is switch enclosures among Fig. 2, the 6th, and cassette fixed contact inlet wire knife switch blade, the 7th, cassette fixed contact outlet knife switch blade, the 8th, arc-extinguish chamber, the 9th, hinge latch.
Accompanying drawing 3 is the utility model circuit theory diagrams.
K is an automatic switch among Fig. 3, and L is an automatic switch voltage and current tripping coil, and 1LLH is that leakage current detects instrument transformer, and 2LLH is a reactance transformer.
Now the utility model is described in further detail in conjunction with the accompanying drawings and embodiments.
Fix on four binding posts that insert switch pedestal from left to right two inlet wires and two outlets in the circuit respectively, then it just is connected as a single entity with cassette fixed contact 3 (X1, X4), 4 (X3, X4) respectively, on switch enclosure 5, four cassette fixed contact blades 6 (Y1, Y2), 7 (Y3, Y4) respectively with being connected as a single entity of automatic switch K into and out of line terminals, and be fixed on the upper end of switch enclosure 5, make it corresponding with 3 (X1, X2), four fixed contacts of 4 (X3, X4) on the base.Automatic switch K and protective circuit are installed in the switch enclosure 5, and two main contact places are fixed with arc-extinguish chamber 8 respectively, to improve the breaking capacity of its switch.If the contact binding post of deciding of automatic switch K is an input terminal, meet the reactance transformer 2LLH of a low permeability soft iron herein on the phase terminal, obtain the voltage signal of load current with this, implement overload protection.And another phase terminal is at the outer winding number circle of switch tripping coil L; and public iron core of short circuit current tripping coil and voltage trip coil and armature; constitute short-circuit protection, after this two phase terminal is passed leakage current signal in the same way and detects instrument transformer 1LLH, leading-out wire terminal Y3, Y4 respectively.Hinge on the switch enclosure 5 is inserted in the hinge jack 2 that sends 9 insertion bases, 1 lower end, rotating switch box 5, make in corresponding 3 (X1, the X2) of insertion of four knife switch blades of 6 (Y1, Y2), 7 (Y3, Y4), four fixed contacts of 4 (X3, X4), the automatic switch K that closes, this moment, circuit was connected.If leak electricity in the circuit, short circuit, overload, overvoltage phenomenon, automatic switch K will trip, circuit is disconnection just.During the maintenance and inspection circuit, only need draw back switch enclosure 5, making four blades of 6 (Y1, Y2), 7 (Y3, Y4) break away from 3 (X1, X2), 4 (X3, X4) just becomes obvious breakpoint.At this, switch enclosure 5 has replaced existing plug-in strip.
Claims (4)
1; a kind of isolated single phasing protection switch; by base; switch enclosure and protective circuit device constitute; automatic switch and protective circuit all are located in the switch enclosure; automatic switch main contact place is provided with arc-extinguish chamber; it is characterized in that the attached knife switch cassette fixed contact of each binding post on the base; and the two fuses; on the switch enclosure also correspondence be provided with cassette fixed contact knife switch blade; a phase terminal of automatic switch moving contact connects reactance transformer in the protective circuit; with another phase terminal behind the outer winding number circle of the voltage trip coil of protection switch, pass leakage current transformer in the same way.
2, isolated single phasing protection switch according to claim 1 is characterized in that the reactance transformer magnetic circuit adopts the low permeability soft iron.
3, isolated single phasing protection switch according to claim 1 is characterized in that public iron core of short circuit tripping coil and voltage trip coil and armature.
4, isolated single phasing protection switch according to claim 1 is characterized in that base and switch enclosure are two independent parts separately, are rotationally connected the two with plug-in type hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96243291 CN2279021Y (en) | 1996-12-02 | 1996-12-02 | Isolated single phase protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96243291 CN2279021Y (en) | 1996-12-02 | 1996-12-02 | Isolated single phase protection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2279021Y true CN2279021Y (en) | 1998-04-15 |
Family
ID=33916978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96243291 Expired - Fee Related CN2279021Y (en) | 1996-12-02 | 1996-12-02 | Isolated single phase protection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2279021Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100533907C (en) * | 2004-11-13 | 2009-08-26 | 艾思玛太阳能技术股份公司 | Protection device for apparatus carrying load current |
-
1996
- 1996-12-02 CN CN 96243291 patent/CN2279021Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100533907C (en) * | 2004-11-13 | 2009-08-26 | 艾思玛太阳能技术股份公司 | Protection device for apparatus carrying load current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |