CN203536935U - Electric leakage circuit breaker with anti-interference function - Google Patents
Electric leakage circuit breaker with anti-interference function Download PDFInfo
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- CN203536935U CN203536935U CN201320588919.8U CN201320588919U CN203536935U CN 203536935 U CN203536935 U CN 203536935U CN 201320588919 U CN201320588919 U CN 201320588919U CN 203536935 U CN203536935 U CN 203536935U
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- circuit
- circuit breaker
- switch
- interference function
- relay
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- 230000003321 amplification Effects 0.000 claims abstract description 12
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 abstract description 3
- 230000006698 induction Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model relates to a circuit breaker, in particular to an electric leakage circuit breaker with the anti-interference function. The electric leakage circuit breaker comprises an induction portion and a motion portion, wherein the induction portion is formed by sequentially connecting a zero sequence current mutual inductor (11), a current amplification circuit (10), a filtering circuit (9) and a light emitting device in series (8). The zero sequence current mutual inductor (11) is arranged on an electric device main circuit. The motion portion is formed by sequentially connecting a motion power source (1), an optical sensing switch (2), a protective resistor (3) and a relay in series. A normally-closed switch of the relay is in linkage with a main circuit switch (6) which is in series connection to the electric device main circuit, and the optical sensing switch (2) and the light emitting device (8) are installed in a sealing box (7). The electric leakage circuit breaker can not be affected by an external electromagnetic field and be not affected by upper harmonics generated by an electric device in the circuit, a reset circuit is arranged inside the electric leakage circuit breaker, and rapid resetting can be achieved.
Description
Technical field
The utility model relates to a kind of circuit breaker, is specifically related to a kind of residual current circuit breaker with anti-interference function.
Background technology
Circuit breaker refers to the electric current that can close, carry and cut-off under normal loop condition, and can close, in official hour, carry and cut-off the switching device of the electric current under abnormal loop condition (comprising short circuit condition).Circuit breaker can be used to distribute electric energy; do not start continually asynchronous motor; power circuit and motor etc. are carried out to protection, can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for they, its function is equivalent to Fuse switch and the combination of crossing underheat relay etc.And after disjunction fault current, generally do not need to change parts.But at present according to statistics,, 80% low-voltage circuit breaker tripping operation, be all to have the reason of contingency to cause, and the ratio of the low-voltage circuit breaker that permanent fault causes tripping operation is no more than 10%.Especially residual current circuit breaker, the interference ratio being subject to is more, causes the reason of its misoperation a lot, the high order harmonic component causing in the line as the impact of external electromagnetic field, electronic equipment, long lead capacitance current (leakage current) over the ground etc.
Utility model content
The purpose of this utility model is to provide a kind of residual current circuit breaker with anti-interference function, solves existing circuit breaker and is easily subject to external interference, causes misoperation and trips, and affects the normal problem of using of power consumption equipment.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: a kind of residual current circuit breaker with anti-interference function, comprise sensing part and action part, described sensing part forms by being connected in series successively zero sequence current mutual inductor, current amplification circuit, filter circuit and photophore, and described zero sequence current mutual inductor is arranged on power consumption equipment main circuit; Described action part is comprised of the action power being connected in series successively, photoinduction switch, protective resistance and relay, and the normally closed switch of described relay and the main circuit switch being serially connected on power consumption equipment main circuit link; Described photoinduction switch and photophore are arranged in stuffing box.
Further technical scheme is, described relay is electromagnet, and the normally closed switch of relay is the outstanding iron matching with electromagnet.
Further technical scheme is, described filter circuit is the compound filter circuit being mainly comprised of tunable capacitor and controllable impedance.
Further technical scheme is, described residual current circuit breaker inside is provided with reset circuit.
Further technical scheme is, described current amplification circuit is triode amplifying circuit.
Further technical scheme is, described action power is lithium battery.
Compared with prior art, the beneficial effects of the utility model are: the utility model, by the filter action of filter circuit and the sealing function of stuffing box, can not be subject to the impact of external electromagnetic field; By filter circuit, be set to the compound filter circuit being formed by tunable capacitor and controllable impedance, can be subject to the impact of the high order harmonic component that electronic equipment produces in the line; The utility model, can Rapid reset by inside, reset circuit being set.
Accompanying drawing explanation
Fig. 1 is a kind of connection diagram with the residual current circuit breaker of anti-interference function of the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows a kind of embodiment with the residual current circuit breaker of anti-interference function of the utility model: a kind of residual current circuit breaker with anti-interference function, comprise sensing part and action part, described sensing part forms by being connected in series successively zero sequence current mutual inductor 11, current amplification circuit 10, filter circuit 9 and photophore 8, and described zero sequence current mutual inductor 11 is arranged on power consumption equipment main circuit; Described action part is comprised of the action power 1 being connected in series successively, photoinduction switch 2, protective resistance 3 and relay, and the normally closed switch of described relay and the main circuit switch 6 being serially connected on power consumption equipment main circuit link; Described photoinduction switch 2 and photophore 8 are arranged in stuffing box 7.
According to a kind of preferred embodiment with the residual current circuit breaker of anti-interference function of the utility model: a kind of residual current circuit breaker with anti-interference function, comprise sensing part and action part, described sensing part forms by being connected in series successively zero sequence current mutual inductor 11, current amplification circuit 10, filter circuit 9 and photophore 8, and described zero sequence current mutual inductor 11 is arranged on power consumption equipment main circuit; Described action part is comprised of the action power 1 being connected in series successively, photoinduction switch 2, protective resistance 3 and relay, and the normally closed switch of described relay and the main circuit switch 6 being serially connected on power consumption equipment main circuit link; Described photoinduction switch 2 and photophore 8 are arranged in stuffing box 7, and described relay is electromagnet 4, and the normally closed switch of relay is the armature 5 matching with electromagnet 4.
According to a kind of another preferred embodiment with the residual current circuit breaker of anti-interference function of the utility model: a kind of residual current circuit breaker with anti-interference function, comprise sensing part and action part, described sensing part forms by being connected in series successively zero sequence current mutual inductor 11, current amplification circuit 10, filter circuit 9 and photophore 8, and described zero sequence current mutual inductor 11 is arranged on power consumption equipment main circuit; Described action part is comprised of the action power 1 being connected in series successively, photoinduction switch 2, protective resistance 3 and relay, and the normally closed switch of described relay and the main circuit switch 6 being serially connected on power consumption equipment main circuit link; Described photoinduction switch 2 and photophore 8 are arranged in stuffing box 7, described filter circuit 9 is the compound filter circuits that are mainly comprised of tunable capacitor and controllable impedance, in having the alternating current circuit of resistance R, inductance L and capacitor C assembly, the voltage at circuit two ends is generally different from electric current position wherein mutually.If parameter or the supply frequency of our regulating circuit assembly L or C, can make their positions mutually identical, whole circuit is rendered as pure resistive.Circuit reaches this state and is referred to as resonance.Because induced current is that induction main circuit changes generation, thereby faradic frequency is identical with the frequency of main circuit, and is all alternating current.We only need to regulate inductance L and capacitor C, just can reach resonance.When filter circuit 9 reaches resonance, the induced current consistent with main circuit frequency is by filter circuit, and high order harmonic component can be stopped outside filter circuit due to the self-induction of inductance L, thus the impact of Eliminate highter harmonic.
According to a kind of another preferred embodiment with the residual current circuit breaker of anti-interference function of the utility model: a kind of residual current circuit breaker with anti-interference function, comprise sensing part and action part, described sensing part forms by being connected in series successively zero sequence current mutual inductor 11, current amplification circuit 10, filter circuit 9 and photophore 8, and described zero sequence current mutual inductor 11 is arranged on power consumption equipment main circuit; Described action part is comprised of the action power 1 being connected in series successively, photoinduction switch 2, protective resistance 3 and relay, and the normally closed switch of described relay and the main circuit switch 6 being serially connected on power consumption equipment main circuit link; Described photoinduction switch 2 and photophore 8 are arranged in stuffing box 7, and described residual current circuit breaker inside is provided with reset circuit, after residual current circuit breaker disconnects, by closed reduction circuit, realize the Rapid reset of residual current circuit breaker.
According to a kind of another preferred embodiment with the residual current circuit breaker of anti-interference function of the utility model: a kind of residual current circuit breaker with anti-interference function, comprise sensing part and action part, described sensing part forms by being connected in series successively zero sequence current mutual inductor 11, current amplification circuit 10, filter circuit 9 and photophore 8, and described zero sequence current mutual inductor 11 is arranged on power consumption equipment main circuit; Described action part is comprised of the action power 1 being connected in series successively, photoinduction switch 2, protective resistance 3 and relay, and the normally closed switch of described relay and the main circuit switch 6 being serially connected on power consumption equipment main circuit link; Described photoinduction switch 2 and photophore 8 are arranged in stuffing box 7, and described current amplification circuit 10 is triode amplifying circuit.
According to a kind of another preferred embodiment with the residual current circuit breaker of anti-interference function of the utility model: a kind of residual current circuit breaker with anti-interference function, comprise sensing part and action part, described sensing part forms by being connected in series successively zero sequence current mutual inductor 11, current amplification circuit 10, filter circuit 9 and photophore 8, and described zero sequence current mutual inductor 11 is arranged on power consumption equipment main circuit; Described action part is comprised of the action power 1 being connected in series successively, photoinduction switch 2, protective resistance 3 and relay, and the normally closed switch of described relay and the main circuit switch 6 being serially connected on power consumption equipment main circuit link; Described photoinduction switch 2 and photophore 8 are arranged in stuffing box 7, and described action power 1 is lithium battery.
Operation principle of the present utility model is: when the utility model is normally worked, as shown in Figure 1, main circuit switch 6 closures, L1 phase, L2 phase, L3 phase circuit are through zero sequence current mutual inductor 11, when electric leakage occurs main circuit, zero sequence current mutual inductor 11 produces induced current, and induced current is after current circuit 10 amplifies, flow to filter circuit 9 and carry out filtering, filtered electric current flows to photophore 8.Now, photophore 8 brightens, and photophore 8 brightens stuffing box 7 inside are brightened, and photoinduction switch 2 transfers closure to by disconnection, and the action part circuit of residual current circuit breaker is connected, and electric current flows to electromagnet 4, and electromagnet 4 attracts armature 5, disconnects main circuit, main circuit switch 6.
Claims (6)
1. a residual current circuit breaker with anti-interference function, comprise sensing part and action part, it is characterized in that: described sensing part forms by being connected in series successively zero sequence current mutual inductor (11), current amplification circuit (10), filter circuit (9) and photophore (8), and described zero sequence current mutual inductor (11) is arranged on power consumption equipment main circuit; Described action part is comprised of the action power being connected in series successively (1), photoinduction switch (2), protective resistance (3) and relay, and the normally closed switch of described relay and the main circuit switch (6) being serially connected on power consumption equipment main circuit link; Described photoinduction switch (2) and photophore (8) are arranged in stuffing box (7).
2. a kind of residual current circuit breaker with anti-interference function according to claim 1, is characterized in that: described relay is electromagnet (4), and the normally closed switch of relay is the armature (5) matching with electromagnet (4).
3. a kind of residual current circuit breaker with anti-interference function according to claim 1, is characterized in that: described filter circuit (9) is the compound filter circuit being mainly comprised of tunable capacitor and controllable impedance.
4. a kind of residual current circuit breaker with anti-interference function according to claim 1, is characterized in that: described residual current circuit breaker inside is provided with reset circuit.
5. a kind of residual current circuit breaker with anti-interference function according to claim 1, is characterized in that: described current amplification circuit (10) is triode amplifying circuit.
6. a kind of residual current circuit breaker with anti-interference function according to claim 1, is characterized in that: described action power (1) is lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320588919.8U CN203536935U (en) | 2013-09-24 | 2013-09-24 | Electric leakage circuit breaker with anti-interference function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320588919.8U CN203536935U (en) | 2013-09-24 | 2013-09-24 | Electric leakage circuit breaker with anti-interference function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203536935U true CN203536935U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320588919.8U Expired - Fee Related CN203536935U (en) | 2013-09-24 | 2013-09-24 | Electric leakage circuit breaker with anti-interference function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203536935U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490379A (en) * | 2013-09-24 | 2014-01-01 | 国家电网公司 | Electric leakage circuit breaker with anti-interference function |
-
2013
- 2013-09-24 CN CN201320588919.8U patent/CN203536935U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490379A (en) * | 2013-09-24 | 2014-01-01 | 国家电网公司 | Electric leakage circuit breaker with anti-interference function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20180924 |