CN100365901C - Circuit for displaying exception of three-phase shock wave absorber and multi-end fuse - Google Patents
Circuit for displaying exception of three-phase shock wave absorber and multi-end fuse Download PDFInfo
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- CN100365901C CN100365901C CNB001334697A CN00133469A CN100365901C CN 100365901 C CN100365901 C CN 100365901C CN B001334697 A CNB001334697 A CN B001334697A CN 00133469 A CN00133469 A CN 00133469A CN 100365901 C CN100365901 C CN 100365901C
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- wave absorber
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Abstract
The present invention provides a circuit capable of displaying exception of a three-phase surge absorber of commercial power. The present invention is connected between the input end and the output end of the commercial power in series and is used for completely indicating the abnormal state of the three-phase surge absorber of the commercial power to provide definite indication for users. The main body of the present invention comprises a first surge absorbing device, a first-third end fuse, an exception indicating circuit, a second surge absorbing device and a second-third end fuse. The present invention can definitely indicate that if L-N, L-G and N-G surge absorbers are normal and can not result in the state of current leakage when various modes are damaged.
Description
Technical field
The invention relates to a kind of display circuit of abnormity of power supply, and the circuit during particularly relevant for a kind of displaying exception of three-phase shock wave absorber.Especially, the present invention further provides a kind of multi-end fuse, so that can be used for the circuit of this displaying exception of three-phase shock wave absorber.
Background technology
On the supply socket product that generally has surging protection (Surge Protection); usually use metal oxide variable resistance (Metal Oxide Varistor; be called for short MOV) or other transient state/surge absorbers (Transient/Surge Absorbers) similar elements, the generation of surging restrained.These elements also can generate heat when absorbing surging, even run into very large surging and can't stand the time, and produce short circuit phenomenon, so can utilize Thermal Cutoffs or electric current fuse to prevent the generation of unusual condition.
And whether general indication surge protecting circuit normal? also be whether to disconnect according to fuse showing; but take place for fear of the excessive situation of leakage current over the ground; so the indication surging is protected normal indicator light; can only show the live wire input; neutral input end (Line-Neutral mode; be called for short the L-N pattern); and can't show live wire input-ground wire input (Line-Ground mode; be called for short the L-G pattern) and neutral input end; ground wire input (Neutral-Ground mode is called for short the N-G pattern).
Please refer to Fig. 1, it is known in order to the unusual circuit of indication surge absorber.As shown in the figure, it comprises two shock wave absorbers 10,30 and a unusual indicating circuit 20.Serial connection shock wave absorber 10 between the L-N in the civil power three-phase, and respectively at serial connection shock wave absorber 30 between L-G and N-G.Shock wave absorber 10 has one can bear the Celsius 139 two end temperature sense fuses 101 and metal oxide variable resistances 102 of spending.When metal oxide variable resistance 102 takes place unusual; gradually heating; owing to abut against on the two end temperature sense fuses 101; last metal oxide variable resistance 102 heating temps blow two end temperature sense fuses 101, so surging protection indicator light 202 does not have electric current to flow through and extinguishes.
Shock wave absorber 30 it have two metal oxide variable resistances 301,302 and can bear two end temperature sense fuses 303 of 139 degree Celsius.When metal oxygen north thing variable resistance 301 takes place unusual; gradually heating; owing to abut against on the two end temperature sense fuses 303; last metal oxide variable resistance 301 heating temps blow two end temperature sense fuses 303; but two end temperature sense fuses 101 do not blow; so surging protection indicator light 202 does not extinguish, and therefore can't detect the situation that shock wave absorber 30 breaks down between L-G.Working as metal oxide variable resistance 302 in addition takes place unusual; gradually heating; owing to abut against on the two end temperature sense fuses 303; last metal oxide variable resistance 302 heating temps blow two end temperature sense fuses 303; but two end temperature sense fuses 101 do not blow; so surging protection indicator light 202 does not extinguish, and therefore also can't detect the situation that shock wave absorber 30 breaks down between N-G.
Summary of the invention
Main purpose of the present invention is, a kind of circuit of displaying exception of three-phase shock wave absorber is provided.
Another object of the present invention provides a kind of multi-end fuse, and first end points of two end fuses and second endpoint stream are crossed when being enough to disconnect the electric current of two end fuses, cuts the 3rd end points simultaneously, and the 3rd end points is isolated with first or second end points fully.
The present invention provides a kind of circuit of displaying exception of three-phase shock wave absorber, it is to be serially connected with between the input and output of civil power, in order to indicate the unusual situation of three-phase shock wave absorber in this civil power, to reach purpose to the clearer and more definite demonstration of user, it comprises: one first shock wave absorber, couple (coupled) to live wire input and neutral input end, in order to absorb the surging between between live wire input and neutral input end; One the 1 end fuse is coupled to first shock wave absorber and live wire output, produces in order to prevent the unusual situation of part; One unusual indicating circuit is coupled to the one or three end fuse, in order to the unusual condition of indication civil power three-phase; One second shock wave absorber is coupled to unusual indicating circuit, and neutral input end and ground wire input are in order to absorb the surging between between neutral input end and ground wire input; And one the 23 end fuse, be coupled to the neutral input end and second shock wave absorber, produce in order to prevent the unusual situation of part.
Description of drawings
For making the auditor can further understand structure of the present invention, feature and purpose thereof, the attached now detailed description with graphic and preferred embodiment as after, wherein:
Fig. 1 is known in order to the unusual circuit of indication surge absorber.
Fig. 2 is the circuit of displaying exception of three-phase shock wave absorber of the present invention.
Embodiment
Please refer to Fig. 2, it illustrates the circuit diagram according to a kind of displaying exception of three-phase shock wave absorber of preferred embodiment of the present invention.As shown in the figure, circuit of the present invention comprises one first shock wave absorber 40, the one or three end fuse, 50, one unusual indicating circuit 60, one second shock wave absorbers 70 and one the 23 end fuses 80.Wherein this first shock wave absorber 40 have one can bear Celsius 139 the degree two end temperature sense fuses 401 and metal oxide variable resistances 402.Wherein the one or three end fuse 50 and the two or three end fuse 80 have a plurality of end points, be in two end fuses, to set up one or a plurality of end points, when first end points of two end fuses and second endpoint stream are crossed when being enough to disconnect the electric current of two end fuses, cut the 3rd end points or those end points simultaneously, make the 3rd or those end points isolate fully with first or second end points.Unusual indicating circuit 60 wherein comprises resistance 2, and diode 601 and light-emitting diode 602 are in order to the unusual situation of indication three-phase circuit.Shock wave absorber 70 wherein has two 701, one of the end temperature sense fuses that can bear 100 and can bear Celsius 139 two end temperature sense fuses 704 and two metal oxide variable resistances 702,703 of spending.
The circuit diagram of displaying exception of three-phase shock wave absorber of the present invention can be so that with following two kinds of its circuit characteristics of pattern analysis, be respectively the damage of slowly generating heat of (1) transient state/surge absorber, and (2) transient state/surge absorber moment continues high pressure and forms the short circuit damage.Below respectively with regard to the characteristic of two kinds of pattern analysis circuit of the present invention.
(1) transient state/surge absorber damage of slowly generating heat:
A) L-N pattern: when metal oxide variable resistance 402 takes place unusual; gradually heating; because it is to abut against on the two end temperature sense fuses 401; last metal oxide variable resistance 402 heating temps blow two end temperature sense fuses 401, so surging protection indicator light 602 does not have electric current to flow through and extinguishes.
B) L-G pattern: when metal oxide variable resistance 702 takes place unusual; gradually heating; owing to abut against on two end temperature sense fuses 701 and 704; because two end temperature sense fuses, 701 temperature are lower; so blow earlier; cause surging protection indicator light 602 not have electric current to flow through and extinguish, but still have electric current to continue to flow through two end temperature sense fuses 704.Generate heat at last to two end temperature sense fuses 704 are blown, do not have electric current to flow through metal oxide variable resistance 702 again, so metal oxide variable resistance 702 stops heating.
C) N-G pattern: when metal oxide variable resistance 703 takes place unusual; gradually heating; owing to abut against on two end temperature sense fuses 701 and 704; because two end temperature sense fuses, 701 temperature are lower; so blow earlier; cause surging protection indicator light 602 not have electric current to flow through and extinguish, but still have electric current to continue to flow through two end temperature sense fuses 704.Generate heat at last to two end temperature sense fuses 704 are blown, do not have electric current to flow through metal oxide variable resistance 703 again, so metal oxide variable resistance 703 stops heating.
(2) transient state/surge absorber lasting high-pressure type of moment becomes the short circuit damage:
A) L-N pattern: when unusual lasting high pressure takes place, 402 moments of metal oxide variable resistance form short circuit phenomenon, owing to there is huge current flow to impact the one or three end fuse 50, makes 50 moments of the one or three end fuse form high heat and disconnect.Except cutting the current path of metal oxide variable resistance 402, also surging is protected the path of indicator light 602 to disconnect, cause surging protection indicator light 602 to extinguish.
B) L-G pattern: when unusual lasting high pressure takes place, 702 moments of metal oxide variable resistance form short circuit phenomenon, owing to there is huge current flow to impact the one or three end fuse 50, makes 50 moments of the one or three end fuse form high heat and disconnect.Except cutting the current path of metal oxide variable resistance 702, also surging is protected the path of indicator light 602 to disconnect, cause surging protection indicator light 602 to extinguish.
C) N-G pattern: when unusual lasting high pressure takes place, 703 moments of metal oxide variable resistance form short circuit phenomenon, owing to there is huge current flow to impact the two or three end fuse 80, makes 80 moments of the two or three end fuse form high heat and disconnect.Except cutting the current path of metal oxide variable resistance 703, also surging is protected the path of indicator light 602 to disconnect, cause surging protection indicator light 602 to extinguish.
In sum, the circuit of displaying exception of three-phase shock wave absorber of the present invention is except clearly indicating L-N, and L-G outside the whether normal function of N-G surge absorber, when also taking into account various patterns and damaging, can not cause the leakage current situation to take place.In addition, first and second surge absorber of the present invention is to be example with the metal oxide variable resistance, other are gas pipe (Gas-Tube) for example, the surge absorber that transient voltage inhibitor (Transient voltage suppurssor) or bilateral switching element (sidactor) etc. constitute also can be general it.Into person is arranged especially, and disclosed three end fuses 50 and 80 are not limited to the structure of three ends, are that example is for convenience of description with three end fuses in the present embodiment, other for example the multi-end fuse of four ends or multiterminal structure all in protection scope of the present invention.And that the forms that three end fuses 50 and 80 are realized are not limited to is generally horizontal, vertical, or the pattern of boxlike.Other are for example in (P.C.B Layout) the Copper Foil path of layout on the printed circuit board (PCB) (Trace) or use multi-end fuse structure that the mode of wire jumper implements also in protection scope of the present invention.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when the change that can do a little and retouching, so protection scope of the present invention is as the criterion when looking accompanying the autocratic scope of the application person of defining.
Claims (5)
1. the circuit of a displaying exception of three-phase shock wave absorber, it is to be serially connected with between the input and output of civil power, this input comprises the live wire input, neutral input end, and ground wire input, this output comprises the live wire output, neutral output, and ground line output terminal are in order to indicate the unusual situation of three-phase shock wave absorber in this civil power, it is characterized in that the circuit of this displaying exception of three-phase shock wave absorber comprises:
First shock wave absorber is coupled to this live wire input and this neutral input end, in order to absorb the surging between between this live wire input and this neutral input end;
The one or three end fuse is coupled to this first shock wave absorber and this live wire output, produces in order to prevent the unusual situation of part;
Unusual indicating circuit is coupled to the one or three end fuse, in order to indicate the unusual condition of this civil power three-phase;
Second shock wave absorber is coupled to this unusual indicating circuit, and this neutral input end and this ground wire input are in order to absorb the surging between between this neutral input end and this ground wire input; And
The two or three end fuse is coupled to this neutral input end and this second shock wave absorber, produces in order to prevent the unusual situation of part.
2. the circuit of displaying exception of three-phase shock wave absorber according to claim 1 is characterized in that, wherein this first shock wave absorber comprises:
Two end temperature sense fuses, the one end is coupled to this live wire input, and the other end is coupled to one first end points of the one or three end fuse; And
Surge absorber, one end are coupled to this live wire input, and the other end is coupled to second end points of the one or three end fuse;
When this surge absorber takes place to generate heat gradually unusually, will make this two ends temperature sense blowout at last.
3. the circuit of displaying exception of three-phase shock wave absorber according to claim 1 is characterized in that, wherein this unusual indicating circuit comprises:
Resistance, the one end is coupled to the 3rd end points of the one or three end fuse;
Diode, the one end is coupled to this resistance; And
Light-emitting diode, the one end is coupled to this diode, and the other end is coupled to this second shock wave absorber.
4. the circuit of displaying exception of three-phase shock wave absorber according to claim 1 is characterized in that, wherein this second shock wave absorber comprises:
The one or two end temperature sense fuse, one end are coupled to this unusual indicating circuit, and the other end is coupled to the 3rd end points of the two or three end fuse;
First surge absorber, one end are coupled to this live wire output;
Second surge absorber, the one end is coupled to second end points of the two or three end fuse, and the other end is coupled to the other end of this first surge absorber; And
The two or two end temperature sense fuse, one end are coupled to this first and second surge absorber, and the other end is coupled to this ground line output terminal;
When this first surge absorber takes place unusual, gradually heating, to make the one or two end temperature sense blowout at last, when this second surge absorber takes place unusual, gradually heating, with making the one or two end temperature sense blowout earlier, will make the two or two end temperature sense blowout at last.
5. the circuit of displaying exception of three-phase shock wave absorber according to claim 4 is characterized in that, wherein this first and second surge absorber is the metal oxide variable resistance, gas pipe, transient voltage inhibitor or bilateral switching element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001334697A CN100365901C (en) | 2000-11-07 | 2000-11-07 | Circuit for displaying exception of three-phase shock wave absorber and multi-end fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001334697A CN100365901C (en) | 2000-11-07 | 2000-11-07 | Circuit for displaying exception of three-phase shock wave absorber and multi-end fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1353491A CN1353491A (en) | 2002-06-12 |
| CN100365901C true CN100365901C (en) | 2008-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001334697A Expired - Fee Related CN100365901C (en) | 2000-11-07 | 2000-11-07 | Circuit for displaying exception of three-phase shock wave absorber and multi-end fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100365901C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062494U (en) * | 1990-01-22 | 1990-09-19 | 路广 | Three-terminal fuse with open-phase protective control pole |
| US5977859A (en) * | 1997-01-13 | 1999-11-02 | Pacific Engineering Company | Multielectrode type fuse element and multielectrode type fuse using the same |
-
2000
- 2000-11-07 CN CNB001334697A patent/CN100365901C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062494U (en) * | 1990-01-22 | 1990-09-19 | 路广 | Three-terminal fuse with open-phase protective control pole |
| US5977859A (en) * | 1997-01-13 | 1999-11-02 | Pacific Engineering Company | Multielectrode type fuse element and multielectrode type fuse using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1353491A (en) | 2002-06-12 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20080130 Termination date: 20121107 |