CN209434876U - A kind of fault electric arc breaker - Google Patents
A kind of fault electric arc breaker Download PDFInfo
- Publication number
- CN209434876U CN209434876U CN201920344893.XU CN201920344893U CN209434876U CN 209434876 U CN209434876 U CN 209434876U CN 201920344893 U CN201920344893 U CN 201920344893U CN 209434876 U CN209434876 U CN 209434876U
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- China
- Prior art keywords
- firewire
- zero curve
- end interface
- induction coil
- electric arc
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Abstract
The utility model relates to a kind of fault electric arc breakers, including inlet wire end interface, outlet end interface, zero curve, firewire and current transformer.Wherein, current transformer includes the controller and induction coil interconnected, and zero curve connects inlet wire end interface with the equal one end of firewire, the other end connects outlet end interface, for the zero curve directly through induction coil, the firewire passes through induction coil at middle section pitch of the laps, pitch of the laps；Or the firewire, directly through induction coil, the zero curve passes through induction coil at middle section pitch of the laps, pitch of the laps.Compared with prior art, the utility model has better detection sensitivity, while having both economy and safety.
Description
Technical field
The utility model relates to circuit protection device fields, more particularly, to a kind of fault electric arc breaker.
Background technique
Cause the factor of electrical fire that can be divided into two classes: one kind is line fault, among these includes aging circuit, short
Road, poor contact, electric leakage etc.；Another kind of is electrical equipment malfunction, such as the overload of equipment uses, improper such as heating equipment
It uses.Fault electric arc is exactly one of the inducement for causing electrical fire by line fault.Break down electric arc when, although electric current compared with
It is small, but the temperature of arc burning is up to thousands of degrees Celsius, the insulated hull for the surrounding that can burn or other substances.Therefore it needs
Fault circuit interrupter device is added outside electrical equipment and carries out earth leakage protective, when fault circuit interrupter device detects device current exception
When, circuit is cut off in time, prevents lasting electric arc from causing bigger destruction, leads to the generation of electrical fire.
In existing fault electric arc breaker, the mode of connection of current transformer and route is generally by the way of are as follows:
Firewire is passed through to the coil of mutual inductor, as shown in Figure 1, because zero curve and firewire constitute circuit, it is only necessary to detect the electric current of firewire
It just can be carried out monitoring, still, this mode has the following problems, because firewire electric current can only be detected, over the ground in case of zero curve
Fault electric arc, the current waveform of firewire still tend to normally, to detect fault electric arc.And in routine building zero curve not with
The earth equipotential, so to have certain voltage over the ground poor for zero curve；If zero curve is damaged, zero curve and the still possible production between the earth
Raw fault electric arc, occurs fire.
Utility model content
The purpose of this utility model is exactly to provide a kind of fault electric arc to overcome the problems of the above-mentioned prior art
Breaker.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of fault electric arc breaker, including inlet wire end interface, outlet end interface, zero curve, firewire and current transformer, its
In, current transformer includes the controller and induction coil interconnected, and zero curve connects inlet wire end interface with the equal one end of firewire, separately
One end connects outlet end interface, and the zero curve is worn at middle section pitch of the laps, pitch of the laps directly through induction coil, the firewire
Cross induction coil.
A kind of fault electric arc breaker, including inlet wire end interface, outlet end interface, zero curve, firewire and current transformer, its
In, current transformer includes the controller and induction coil interconnected, and zero curve connects inlet wire end interface with the equal one end of firewire, separately
One end connects outlet end interface, and the firewire is worn at middle section pitch of the laps, pitch of the laps directly through induction coil, the zero curve
Cross induction coil.
Further, further include tripping gear, the tripping gear connect one end connection controller, the other end connect zero curve and
Firewire.
It further, further include shell, in the upper housing, the outlet end interface setting exists for the inlet wire end interface setting
Lower part of the housing.
Further, the shell is made of ambroin.
It further, further include manual switch, which connects zero curve and firewire.
Compared with prior art, the utility model has the advantage that
1, the utility model makes the induction that mutual inductor is passed through at pitch of the laps by the middle section pitch of the laps in firewire or zero curve
Coil, so that the current phasor direction for passing through the both threads of induction coil is identical, therefore, the current signal that mutual inductor detects is
The Signal averaging of zero curve and firewire.In normal work process, the current signal of superposition keeps stablizing, when zero curve generates over the ground
When electric arc, the electric current of zero curve and firewire can be detected simultaneously by the current signal of superposition, there is better detection sensitivity, make up
Existing design only detects the deficiency of firewire electric current.
2, the utility model implementation method is simple, can be transformed at low cost to existing breaker, has economy
Property.
3, the utility model further includes manual switch, carries out the control of breaker work and off working state, can be into one
Step promotes the safety of circuit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing fault circuit interrupter device.
Fig. 2 is the structural schematic diagram of the utility model.
Fig. 3 is the structural schematic diagram of another embodiment.
Appended drawing reference: 1, inlet wire end interface, 2, outlet end interface, 3, zero curve, 4, firewire, 51, induction coil, 52, control
Device, 6, tripping gear, 7, shell, 8, manual switch.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model
Implemented premised on technical solution, the detailed implementation method and specific operation process are given, but the guarantor of the utility model
Shield range is not limited to the following embodiments.
As shown in Fig. 2, present embodiments providing a kind of fault electric arc breaker, including inlet wire end interface 1, outlet end interface
2, zero curve 3, firewire 4 and current transformer.
Wherein, current transformer includes the controller 52 and induction coil 51 interconnected, zero curve 3 and the equal one end of firewire 4
Inlet wire end interface 1 is connected, the other end connects outlet end interface 2, and the zero curve 3 exists directly through induction coil 51, the firewire 4
Middle section pitch of the laps passes through induction coil 51 at pitch of the laps.
The fault electric arc breaker further includes tripping gear 6, using shell 7 made of ambroin and manual switch 8.Its
In, tripping gear 6 uses electromagnetic type push rod, and 6 control terminal of tripping gear connects controller 52, and the other end connects zero curve 3 and firewire
4, for realizing the disconnection of circuit.
The right side upper end of shell 7 is provided with inlet wire end interface 1, is respectively provided with and connects the end zero curve 3 (N) and start to exchange fire line 4 (L)
End, for connecting power supply；In the right side lower end of shell 7, setting occurs end interface, equally has and connects the end zero curve 3 (N ') and start to exchange fire
Line 4 (L ') end, for connecting load.
In current transformer, whether the electric current that controller 52 is used to detect induction coil 51 mutates, if occurring prominent
Become, then issues unhook signal to tripping gear 6, realize the disconnection of circuit.
Manual switch 8 is using toggle switch connection zero curve 3 and firewire 4, for further promoting the safety of breaker.
The working principle of the present embodiment are as follows: when arc fault, zero curve 3 (N) firewire 4 occur for the connect loaded line of breaker
(L) current signal on can generate high fdrequency component, flat shoulder occur, and breaker detects zero curve 3 (N) firewire 4 (L) by mutual inductor
On current signal, to determine whether the electric arc that breaks down, plays a protective role.
Because the current phasor direction for passing through the both threads of induction coil 51 is identical.So the electric current that mutual inductor detects
Signal is the Signal averaging of zero curve 3 and firewire 4.In normal work process, the current signal of superposition is flat to be kept stablizing, and works as fire
Any generation current anomaly in line 4 and zero curve 3, can find, disconnecting circuit in time, have preferably detection sensitive
Degree.
As shown in figure 3, another embodiment provides fault electric arc breaker, including inlet wire end interface 1, outlet end interface 2,
Zero curve 3, firewire 4 and current transformer, wherein, current transformer include the controller 52 and induction coil 51 interconnected, and zero
Line 3 connects inlet wire end interface 1 with the equal one end of firewire 4, and the other end connects outlet end interface 2.The firewire 4 is directly through the line of induction
Circle 51, the zero curve 3 pass through induction coil 51 at middle section pitch of the laps, pitch of the laps.Remaining structure and the same the present embodiment of principle
It is identical, therefore repeat no more.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (6)
1. a kind of fault electric arc breaker, including inlet wire end interface (1), outlet end interface (2), zero curve (3), firewire (4) and electricity
Current transformer, wherein current transformer includes the controller (52) and induction coil (51) interconnected, zero curve (3) and firewire
(4) one end connection inlet wire end interface (1), the other end connect outlet end interface (2), which is characterized in that the zero curve (3) is direct
Across induction coil (51), the firewire (4) passes through induction coil (51) at middle section pitch of the laps, pitch of the laps.
2. a kind of fault electric arc breaker, including inlet wire end interface (1), outlet end interface (2), zero curve (3), firewire (4) and electricity
Current transformer, wherein, current transformer include the controller (52) and induction coil (51) interconnected, zero curve (3) and firewire
(4) one end connection inlet wire end interface (1), the other end connect outlet end interface (2), which is characterized in that the firewire (4) is direct
Across induction coil (51), the zero curve (3) passes through induction coil (51) at middle section pitch of the laps, pitch of the laps.
3. fault electric arc breaker according to claim 1 or 2, which is characterized in that further include tripping gear (6), this is de-
Hook device (6) connects one end connection controller (52), and the other end connects zero curve (3) and firewire (4).
4. fault electric arc breaker according to claim 1 or 2, which is characterized in that further include shell (7), the inlet wire
End interface (1) setting is arranged in shell (7) top, the outlet end interface (2) in shell (7) lower part.
5. fault electric arc breaker according to claim 4, which is characterized in that the shell (7) uses ambroin system
At.
6. fault electric arc breaker according to claim 1 or 2, which is characterized in that further include manual switch (8), the hand
Dynamic switch (8) connection zero curve (3) and firewire (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920344893.XU CN209434876U (en) | 2019-03-19 | 2019-03-19 | A kind of fault electric arc breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920344893.XU CN209434876U (en) | 2019-03-19 | 2019-03-19 | A kind of fault electric arc breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209434876U true CN209434876U (en) | 2019-09-24 |
Family
ID=67978655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920344893.XU Active CN209434876U (en) | 2019-03-19 | 2019-03-19 | A kind of fault electric arc breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209434876U (en) |
-
2019
- 2019-03-19 CN CN201920344893.XU patent/CN209434876U/en active Active
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