CN220964316U - Integral type earth leakage protection device - Google Patents
Integral type earth leakage protection device Download PDFInfo
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- CN220964316U CN220964316U CN202323026626.3U CN202323026626U CN220964316U CN 220964316 U CN220964316 U CN 220964316U CN 202323026626 U CN202323026626 U CN 202323026626U CN 220964316 U CN220964316 U CN 220964316U
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- 239000003990 capacitor Substances 0.000 claims abstract description 114
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000004146 energy storage Methods 0.000 claims abstract description 11
- 230000001052 transient effect Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000001629 suppression Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model relates to an integral leakage protection device, which comprises a magnetic ring, wherein a coil is wound on the magnetic ring; a trip; the integrated leakage protection circuit comprises an energy storage capacitor unit, an RC delay unit, a voltage detection unit and a driving tube unit, wherein the energy storage capacitor unit comprises a first capacitor C1 and a fifth capacitor C5, one end of the first capacitor C1 is connected with a power supply end, the other end of the first capacitor C1 is connected with the fifth capacitor C5, and one end of the fifth capacitor C5 is connected with a grounding end; the integrated leakage protection circuit further comprises a switch diode D1, a pin 1 and a pin 2 of the switch diode D1 are respectively connected with a grounding end of the fifth capacitor C5 and a power end of the first capacitor C1, and a second pin of the magnetic ring is connected with a connecting end of the first capacitor C1 and the fifth capacitor C5. The beneficial effects of the utility model are as follows: the half-wave rectification mode is adopted, so that the number of turns of the coil on the magnetic ring can be reduced, and the production cost is reduced.
Description
Technical Field
The utility model relates to the technical field of leakage protection, in particular to an integral type leakage protection device.
Background
The existing leakage protection device generally makes a live wire and a zero wire of a certain phase line pass through a magnetic ring wound with a coil, when leakage occurs, induced electromotive force is generated on the coil of the magnetic ring, and a circuit sends a leakage signal to a control executing mechanism according to the detected induced electromotive force, so that the control executing mechanism acts to automatically cut off a circuit at a fault position. However, in the existing circuit, a full-wave rectification mode is generally adopted, and 4 diodes are generally adopted for rectification, so that the output voltage of the magnetic ring needs to be further improved, the number of turns of the coil on the magnetic ring is increased, and generally about 700 turns of the coil on one magnetic ring are adopted, so that the production cost is increased and the reduction is difficult.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model aims to provide an integral type electric leakage protection device so as to solve the problems.
The technical scheme of the utility model is realized as follows: an integral leakage protection device comprises,
The magnetic ring is wound with a coil;
A trip;
The integrated leakage protection circuit comprises an energy storage capacitor unit, an RC delay unit, a voltage detection unit and a driving tube unit, wherein the energy storage capacitor unit comprises a first capacitor C1 and a fifth capacitor C5, one end of the first capacitor C1 is connected with a power supply end, the other end of the first capacitor C1 is connected with the fifth capacitor C5, and one end of the fifth capacitor C5 is connected with a grounding end;
The integrated leakage protection circuit further comprises a switch diode D1, a pin 1 and a pin 2 of the switch diode D1 are respectively connected with a grounding end of the fifth capacitor C5 and a power end of the first capacitor C1, and a second pin of the magnetic ring is connected with a connecting end of the first capacitor C1 and the fifth capacitor C5.
The utility model is further provided with: the energy storage capacitor unit further comprises a sixth resistor R6, a second capacitor C2 and a seventh capacitor C7, wherein one end of the second capacitor C2 is connected with a power end, the other end of the second capacitor C2 is connected with the seventh capacitor C7, one end of the seventh capacitor C7 is connected with a grounding end, a connection point of the first capacitor C1 and the fifth capacitor C5 is connected with a connection point of the second capacitor C2 and the seventh capacitor C7, and two ends of the sixth resistor R6 are respectively connected with the power end of the first capacitor C1 and the grounding end of the fifth capacitor C5.
The utility model is further provided with: the integrated leakage protection circuit further comprises an adjusting circuit unit, the adjusting circuit unit comprises a fourth resistor R4 and a fourth capacitor C4 which are connected in parallel, at least one fourth capacitor C4 is arranged, the upper end of the fourth capacitor C4 is connected with a first pin of a magnetic ring, the upper end of the fourth capacitor C4 is connected with a No. 3 pin of a switching diode D1 through a first resistor R1, and a second pin of the magnetic ring is connected with the lower end, far away from the fourth capacitor C4, of the magnetic ring.
The utility model is further provided with: the regulating circuit unit further comprises a transient voltage suppression diode D3, the transient voltage suppression diode D3 being connected in parallel with the fourth resistor R4.
The utility model is further provided with: the RC delay unit comprises a third resistor R3, a second resistor R2 and a ninth capacitor C9, one end of the third resistor R3 is connected with a grounding end through the second resistor R2, the connecting end of the third resistor R3 and the connecting end of the second resistor R2 are connected with the grounding end through the ninth capacitor C9, and one end, far away from the second resistor R2, of the third resistor R3 is connected with a power end and is connected with the positive electrode of the release.
The utility model is further provided with: the voltage detection unit is a detection chip, a No. 2 pin of the detection chip is connected with a grounding end, and a No. 3 pin of the detection chip is connected with a connecting end of the third resistor R3 and the second resistor R2.
The utility model is further provided with: the driving tube unit comprises a second diode D2, a fifth resistor R5, a sixth capacitor C6 and a MOS tube Q1, wherein the anode of the second diode D2 is connected with a No. 1 pin of the detection chip, the cathode of the second diode D2 is connected with a grounding end through the fifth resistor R5, the G electrode of the MOS tube Q1 is connected with the grounding end through the sixth capacitor C6, the G electrode of the MOS tube Q1 is connected with the connection part of the second diode D2 and the fifth resistor R5, the S electrode of the MOS tube Q1 is connected with the grounding end, the D electrode of the MOS tube Q1 is connected with the anode of a fourth diode D4, the cathode of the fourth diode D4 is connected with the end, far away from the second resistor R2, of the third resistor R3, and the cathode of the release is connected with the anode of the fourth diode D4.
Compared with the prior art, the technical scheme of the invention has the following advantages: by adopting a half-wave rectification mode, the adjusting resistance is added to the integral type leakage protection circuit, so that the working voltage can be effectively reduced relative to the existing full-wave rectification, the number of turns of the coil on the magnetic ring can be reduced, the number of turns of the coil on the magnetic ring can be about 400, the use of the coil and the number of elements are reduced, the production cost is effectively reduced, the volume of the circuit board is reduced, and the space is more saved; the transient voltage suppression diode can effectively absorb surge and protect the circuit; the MOS tube is adopted as a driving electrode in the circuit, so that the space can be saved more and the conduction voltage drop is smaller; when the number of turns of the coil in the integral release is 2000-3500 turns, the no-load current is 0.2-0.5 mA; when 200-500 turns of the secondary side line of the integral transformer are input with 45mA, and single turn output is 2.0-3.0 mv.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a circuit diagram of an integrated leakage protection circuit according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the present utility model discloses an integrated earth leakage protection device, comprising,
The magnetic ring is wound with a coil;
A trip;
The integrated leakage protection circuit comprises an energy storage capacitor unit 2, an RC delay unit 3, a voltage detection unit 4 and a driving tube unit 5, wherein the energy storage capacitor unit 2 comprises a first capacitor C1 and a fifth capacitor C5, one end of the first capacitor C1 is connected with a power supply end, the other end of the first capacitor C1 is connected with the fifth capacitor C5, and one end of the fifth capacitor C5 is connected with a grounding end;
The integrated leakage protection circuit further comprises a switch diode D1, a pin 1 and a pin 2 of the switch diode D1 are respectively connected with a grounding end of the fifth capacitor C5 and a power end of the first capacitor C1, and a second pin of the magnetic ring is connected with a connecting end of the first capacitor C1 and the fifth capacitor C5.
By adopting a half-wave rectification mode, the adjusting resistance is added to the integral type leakage protection circuit, so that the working voltage can be effectively reduced relative to the existing full-wave rectification, the number of turns of the coil on the magnetic ring can be reduced, the number of turns of the coil on the magnetic ring can be about 400, the use of the coil and the number of elements are reduced, the production cost is effectively reduced, the volume of the circuit board is reduced, and the space is more saved; when the number of turns of the coil in the integral release is 2600 turns, the no-load current is 0.3-0.45 mA; when 300-450 turns of the secondary side line of the integral transformer are input with 45mA, and the output of single turn is 2.5-3.0 mv.
In this embodiment of the present utility model, the energy storage capacitor unit 2 further includes a sixth resistor R6, a second capacitor C2, and a seventh capacitor C7, where one end of the second capacitor C2 is connected to the power supply end, the other end of the second capacitor C2 is connected to the seventh capacitor C7, one end of the seventh capacitor C7 is connected to the ground end, a connection point between the first capacitor C1 and the fifth capacitor C5 is connected to a connection point between the second capacitor C2 and the seventh capacitor C7, and two ends of the sixth resistor R6 are respectively connected to the power supply end of the first capacitor C1 and the ground end of the fifth capacitor C5.
In the embodiment of the utility model, the integrated leakage protection circuit further comprises an adjusting circuit unit 1, the adjusting circuit unit 1 comprises a fourth resistor R4 and a fourth capacitor C4 which are connected in parallel, at least one fourth capacitor C4 is arranged, the upper end of the fourth capacitor C4 is connected with a first pin of a magnetic ring, the upper end of the fourth capacitor C4 is connected with a pin No. 3 of a switching diode D1 through the first resistor R1, and the second pin of the magnetic ring is connected with the lower end far away from the fourth capacitor C4.
In the embodiment of the present utility model, the regulating circuit unit 1 further includes a transient voltage suppressing diode D3, and the transient voltage suppressing diode D3 is connected in parallel with the fourth resistor R4. The transient voltage suppression diode can effectively absorb surge and protect the circuit.
In the embodiment of the present utility model, the RC delay unit 3 includes a third resistor R3, a second resistor R2, and a ninth capacitor C9, where one end of the third resistor R3 is connected to the ground terminal through the second resistor R2, the connection terminal of the third resistor R3 and the second resistor R2 is connected to the ground terminal through the ninth capacitor C9, and one end of the third resistor R3 far away from the second resistor R2 is connected to the power supply terminal and connected to the positive electrode of the trip device.
In the embodiment of the present utility model, the voltage detection unit 4 is a detection chip, and a pin No. 2 of the detection chip is connected to a ground terminal, and a pin No. 3 of the detection chip is connected to a connection terminal of the third resistor R3 and the second resistor R2.
In the embodiment of the utility model, the driving tube unit 5 includes a second diode D2, a fifth resistor R5, a sixth capacitor C6 and a MOS tube Q1, where the positive electrode of the second diode D2 is connected to the pin 1 of the detection chip, the negative electrode is connected to the ground terminal through the fifth resistor R5, the G electrode of the MOS tube Q1 is connected to the ground terminal through the sixth capacitor C6, the G electrode of the MOS tube Q1 is connected to the junction between the second diode D2 and the fifth resistor R5, the S electrode of the MOS tube Q1 is connected to the ground terminal, the D electrode of the MOS tube Q1 is connected to the positive electrode of the fourth diode D4, the negative electrode of the fourth diode D4 is connected to the end of the third resistor R3 far from the second resistor R2, and the negative electrode of the release is connected to the positive electrode of the fourth diode D4. The MOS tube is adopted as the driving electrode in the circuit, so that the space can be saved more, and the conduction voltage drop is smaller.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. An integral leakage protection device is characterized by comprising,
The magnetic ring is wound with a coil;
A trip;
The integrated leakage protection circuit comprises an energy storage capacitor unit (2), an RC delay unit (3), a voltage detection unit (4) and a driving tube unit (5), wherein the energy storage capacitor unit (2) comprises a first capacitor (C1) and a fifth capacitor (C5), one end of the first capacitor (C1) is connected with a power supply end, the other end of the first capacitor is connected with the fifth capacitor (C5), and one end of the fifth capacitor (C5) is connected with a grounding end;
The integrated leakage protection circuit further comprises a switch diode (D1), a pin 1 and a pin 2 of the switch diode (D1) are respectively connected with the grounding end of the fifth capacitor (C5) and the power end of the first capacitor (C1), and a second pin of the magnetic ring is connected with the connecting end of the first capacitor (C1) and the fifth capacitor (C5).
2. The integrated leakage protection device according to claim 1, wherein the energy storage capacitor unit (2) further comprises a sixth resistor (R6), a second capacitor (C2) and a seventh capacitor (C7), wherein one end of the second capacitor (C2) is connected to the power supply terminal, the other end of the second capacitor is connected to the seventh capacitor (C7), one end of the seventh capacitor (C7) is connected to the ground terminal, the connection point of the first capacitor (C1) and the fifth capacitor (C5) is connected to the connection point of the second capacitor (C2) and the seventh capacitor (C7), and two ends of the sixth resistor (R6) are respectively connected to the power supply terminal of the first capacitor (C1) and the ground terminal of the fifth capacitor (C5).
3. The integrated leakage protection device according to claim 1, wherein the integrated leakage protection circuit further comprises a regulating circuit unit (1), the regulating circuit unit (1) comprises a fourth resistor (R4) and a fourth capacitor (C4) which are connected in parallel, at least one fourth capacitor (C4) is arranged, the upper end of the fourth capacitor (C4) is connected with a first pin of a magnetic ring, the upper end of the fourth capacitor (C4) is connected with a pin No. 3 of a switching diode (D1) through the first resistor (R1), and the second pin of the magnetic ring is connected with the lower end of the fourth capacitor (C4) which is far away.
4. An integrated earth leakage protection device according to claim 3, characterized in that the regulating circuit unit (1) further comprises a transient voltage suppressing diode (D3), the transient voltage suppressing diode (D3) being connected in parallel with a fourth resistor (R4).
5. The integrated leakage protection device according to claim 1, wherein the RC delay unit (3) comprises a third resistor (R3), a second resistor (R2) and a ninth capacitor (C9), one end of the third resistor (R3) is connected to the ground terminal through the second resistor (R2), the connection end of the third resistor (R3) and the connection end of the second resistor (R2) are connected to the ground terminal through the ninth capacitor (C9), and one end of the third resistor (R3) far away from the second resistor (R2) is connected to the power terminal and is connected to the positive electrode of the trip.
6. The integrated leakage protection device according to claim 5, wherein the voltage detection unit (4) is a detection chip, and pin No. 2 of the detection chip is connected to a ground terminal, and pin No. 3 is connected to a connection terminal of the third resistor (R3) and the second resistor (R2).
7. The integrated leakage protection device according to claim 6, wherein the driving tube unit (5) comprises a second diode (D2), a fifth resistor (R5), a sixth capacitor (C6) and a MOS tube (Q1), the positive electrode of the second diode (D2) is connected to the pin 1 of the detection chip, the negative electrode is connected to the ground terminal through the fifth resistor (R5), the G electrode of the MOS tube (Q1) is connected to the ground terminal through the sixth capacitor (C6), the G electrode of the MOS tube (Q1) is connected to the junction between the second diode (D2) and the fifth resistor (R5), the S electrode of the MOS tube (Q1) is connected to the ground terminal, the D electrode of the MOS tube (Q1) is connected to the positive electrode of the fourth diode (D4), the negative electrode of the fourth diode (D4) is connected to one end of the third resistor (R3) far from the second resistor (R2), and the negative electrode of the release is connected to the positive electrode of the fourth diode (D4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323026626.3U CN220964316U (en) | 2023-11-08 | 2023-11-08 | Integral type earth leakage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323026626.3U CN220964316U (en) | 2023-11-08 | 2023-11-08 | Integral type earth leakage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220964316U true CN220964316U (en) | 2024-05-14 |
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ID=91025961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323026626.3U Active CN220964316U (en) | 2023-11-08 | 2023-11-08 | Integral type earth leakage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220964316U (en) |
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2023
- 2023-11-08 CN CN202323026626.3U patent/CN220964316U/en active Active
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