CN117712991A - Novel inhibit electric leakage detection protection that resets device - Google Patents
Novel inhibit electric leakage detection protection that resets device Download PDFInfo
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- CN117712991A CN117712991A CN202211398744.4A CN202211398744A CN117712991A CN 117712991 A CN117712991 A CN 117712991A CN 202211398744 A CN202211398744 A CN 202211398744A CN 117712991 A CN117712991 A CN 117712991A
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- 230000005611 electricity Effects 0.000 abstract description 4
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- 102100039690 RNA-binding motif, single-stranded-interacting protein 2 Human genes 0.000 description 4
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/042—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
- H02H3/334—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control
- H02H3/335—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control the main function being self testing of the device
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- Emergency Protection Circuit Devices (AREA)
Abstract
The application discloses a novel electric leakage detection protection device capable of prohibiting reset, which relates to the field of electric leakage protection and comprises an action module, an electric leakage detection module, a first driving module and a power-on prohibition module; the leakage detection module is used for detecting whether the power line leaks electricity or not, and is also used for sending out fault signals when the first leakage detection line and/or the second leakage detection line is/are opened; the first driving module is also used for receiving the fault signal sent by the electric leakage detection module, and driving the action module to disconnect the load power supply after receiving the fault signal; the power-on prohibition module is used for receiving the fault signal sent by the electric leakage detection module and prohibiting the electric leakage detection protection device from resetting and powering up after receiving the fault signal; compared with the prior art, under the condition that the leakage detection line is broken, the power supply of the load is disconnected, the leakage detection protection device is forbidden to reset and power on, and the use safety is improved.
Description
Technical Field
The application relates to the field of leakage protection, in particular to a novel leakage detection protection device capable of prohibiting reset.
Background
The power line leakage protector is used for detecting whether the power line leaks electricity or not, and cutting off the power supply when the power line leaks electricity, so that the risk of electric shock or fire of people and animals caused by electricity leakage of electric equipment or short circuit of lines due to aging, animal biting, extrusion and the like of the power line is effectively reduced.
For example, chinese utility model CN 216794606U-type proposes a power line leakage detection protection device, an electrical connection apparatus, and an electrical appliance. The device comprises: the switch module is used for controlling the electric power connection between the input end and the output end of the power line; the leakage detection module comprises a first leakage detection line coating the first current carrying line, wherein the first leakage detection line detects a first leakage current signal on the first current carrying line or generates a first self-detection fault signal when the first leakage detection line is open, and a second leakage detection line coating the second current carrying line detects a second leakage current signal on the second current carrying line or generates a second self-detection fault signal when the second leakage detection line is open; the first driving module is coupled with the switch module and the leakage detection module, receives a first leakage current signal or a first self-checking fault signal and drives the switch module to disconnect power; and receiving a second leakage current signal or a second self-checking fault signal and driving the switch module to disconnect power.
According to the technical scheme, the power supply is disconnected when the leakage detection line is disconnected, but a user can still try to power up again after disconnecting the power supply, and the power supply is disconnected again after the power supply is disconnected again, but the disconnection of the leakage detection line indicates that the power supply line is in a damaged state, so that the risk of causing electric shock or fire of people and animals is caused even if the power supply is disconnected again in a short time, and potential safety hazards exist.
In addition, each leakage detection line in the technical scheme is also provided with a connecting line to form a detection loop, so that the difficulty and cost of production and processing are improved.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the defects existing in the prior art, the safety of the electric leakage detection protection device is improved.
2. Technical proposal
In order to solve the problems, the novel electric leakage detection protection device capable of prohibiting reset comprises an action module, an electric leakage detection module, a first driving module and a power-on prohibition module;
the action module is used for switching on or switching off a load power supply;
the electric leakage detection module is used for detecting whether the power line is leaked or not and sending out an electric leakage signal when the electric leakage is detected;
the electric leakage detection module comprises a first electric leakage detection line and a second electric leakage detection line, wherein the first electric leakage detection line covers a first current carrying line in the power line, and the second electric leakage detection line covers a second current carrying line in the power line;
the first driving module is used for receiving the leakage signal sent by the leakage detection module, and driving the action module to disconnect the load power supply after receiving the leakage signal;
the electric leakage detection module is also used for sending out fault signals when the first electric leakage detection line and/or the second electric leakage detection line are/is opened;
the first driving module is also used for receiving the fault signal sent by the electric leakage detection module, and driving the action module to disconnect the load power supply after receiving the fault signal;
the power-on prohibition module is used for receiving the fault signal sent by the electric leakage detection module, and the power-on prohibition module is also used for prohibiting the electric leakage detection protection device from resetting and powering up after receiving the fault signal.
The electric leakage detection protection device for prohibiting reset further comprises a commercial power detection module, wherein the commercial power detection module is used for sending a power-off signal when the electric leakage detection protection device for prohibiting reset is disconnected with the commercial power;
the first driving module is also used for receiving a power-off signal sent by the commercial power detection module; the first driving module is configured to drive the action module to disconnect the load power supply after receiving the power-off signal.
The first end of the first electric leakage detection line is electrically connected with the first driving module;
the first end of the second electric leakage detection line is electrically connected with the first driving module, and the second end of the second electric leakage detection line is electrically connected with the second end of the first electric leakage detection line.
The leakage detection protection device for prohibiting reset further comprises a test module, wherein the test module is electrically connected with the leakage detection module; the test module comprises a test key;
the first drive module is further configured to: when the test key is pressed and the leakage detection module works normally, the driving action module cuts off the load power supply.
The test module is used for simulating the electric leakage of the power line.
The leakage detection protection device for prohibiting reset further comprises a rectification module, wherein the rectification module is used for rectifying alternating current into direct current.
The power-on prohibition module comprises a reset key, and the action module is connected with the load power supply after the reset key is pressed.
The action module comprises a tripping coil and a switch;
the first driving module is used for switching off the switch through driving the tripping coil, so that the load power supply is switched off.
Wherein the action module comprises a maintenance coil and a switch;
the first driving module enables the switch to lose the force for maintaining the closed state by switching off the power supply of the maintaining coil, and further enables the switch to switch off the load power supply.
The power-on prohibition module further comprises an alarm unit, wherein the alarm unit is used for sending out an audible and/or visual alarm to prompt a user that the electric leakage detection protection device is in a state of prohibiting reset power-on.
The power-on prohibiting module is further configured to prevent the action module from turning on the load power supply after the reset key is pressed when the electric leakage detection protection device is in a state of prohibiting reset power-on.
The two ends of the tripping coil are connected in parallel with a first capacitor.
3. Advantageous effects of the present application
Compared with the prior art, the power-on prohibition module is arranged, under the condition that the leakage detection line is broken, the power supply of the load is disconnected, the leakage detection protection device is prohibited from being reset and electrified, the use safety is improved, the leakage detection protection device is reminded to be abnormal through the alarm unit, and the use experience of a user is improved.
Through the detection loop formed by the two electric leakage detection lines and the first driving module, no connecting wire is needed to be additionally configured for the electric leakage detection lines, the electric leakage protection function and the open-circuit self-checking function can be realized, and the production difficulty and the cost are reduced.
Through setting up electric detection module for electric leakage detection protection device is when the commercial power is switched on next time, and electric leakage detection protection device's initial state is the state of disconnection load power, has further improved the safety in utilization.
Drawings
FIG. 1 is a schematic block diagram of example 1 of the present application;
FIG. 2 is a schematic diagram of example 1 of the present application;
FIG. 3 is a schematic diagram of example 2 of the present application;
FIG. 4 is a schematic diagram of example 3 of the present application;
fig. 5 is a schematic diagram of example 4 of the present application.
Detailed Description
The detailed description of the present application is further described in detail below with reference to the drawings and examples. The following examples are illustrative of the present application but are not intended to limit the scope of the present application.
Example 1:
as shown in fig. 1, the leakage detection protection device includes an action module 10, a leakage detection module 20, a first driving module 30, a test module 40, a rectification module 50, and a power-on prohibition module 60.
As shown in fig. 2, the rectifying module 50 includes a rectifying bridge D1, a rectifying bridge D6, and a varistor ZNR1, where the rectifying module 50 is used for rectifying alternating current to direct current and for transient voltage protection;
the leakage detection module 20 includes a first leakage detection line 21 and a second leakage detection line 22, where the first leakage detection line 21 covers a live wire L in the power line, and the second leakage detection line 22 covers a neutral wire N in the power line, and it should be noted that, an insulating shielding layer (not shown) is covered outside the leakage detection line, and those skilled in the art may also use the leakage detection line with one side being an insulating layer and one side being a conductor, which is not limited herein;
the first end A of the first leakage detection line 21 is electrically connected with the control electrode of the silicon controlled rectifier SCR 1; the first end B of the second leakage detection line 22 is electrically connected with the cathode of the silicon controlled rectifier SCR 1; the second end C of the first leakage detection line 21 is electrically connected with the second end D of the second leakage detection line 22, so that a leakage detection loop is formed, when leakage occurs in the zero line N or the live line L, the leakage current enables the silicon controlled rectifier SCR3 to be conducted, the tripping coil L2 is powered on, and the switch S1 cuts off a load power supply;
that is, when the leakage detection module 20 detects the leakage, the leakage detection module 20 sends out a leakage signal, and the first driving module 30 drives the action module 10 to disconnect the load power after receiving the leakage signal sent out by the leakage detection module 20.
When the first leakage detection line 21 and the second leakage detection line 22 are intact, the silicon controlled rectifier SCR1 is cut off, and the leakage detection protection device is always in an open circuit self-detection state; when the first leakage detection line 21 and/or the second leakage detection line 22 are/is opened due to the bite of a mouse, the SCR1 is turned on, so that the silicon controlled rectifier Q3, the triode Q1 and the silicon controlled rectifier SCR3 are turned on, the tripping coil L2 is electrified, and the switch S1 cuts off the load power supply; the two ends of the tripping coil L2 are connected with a capacitor C10 in parallel and used for preventing the thyristor Q3 from being locked;
namely, when the first leakage detection line 21 and/or the second leakage detection line 22 are/is opened, a fault signal is sent out, and the first driving module 30 drives the action module 10 to disconnect a load power supply after receiving the fault signal;
according to the leakage detection protection device, through the detection loop formed by the two leakage detection lines and the first driving module, a connecting wire is not required to be additionally arranged for the leakage detection lines, so that the leakage protection function and the open-circuit self-checking function can be realized, and the production difficulty and the cost are reduced.
When SCR1 is conducted, the optocoupler U1 and the triode Q4 are conducted, so that the triode Q6 is conducted;
if the reset key T2 is pressed by a user at the moment, the power supply is disconnected at the moment of resetting and powering up, and resetting and powering up of the leakage detection protection device is prohibited.
I.e., the power-up prohibiting module 60 prohibits the leakage detection protection device from resetting and powering up after receiving the fault signal.
The power-on prohibition module 60 is further provided with an alarm unit, and the alarm unit is used for sending out an acoustic and/or optical alarm to prompt a user that the electric leakage detection protection device is in a state of prohibiting reset power-on; in this embodiment, the alarm unit is an LED lamp LED2. When the transistor Q4 is turned on, the LED lamp LED2 is turned on.
The leakage detection protection device of this embodiment is through setting up and forbidding the module 60 that goes up, under the circumstances that the leakage detection line is broken circuit, the power of disconnection load and forbid the leakage detection protection device to reset and go up, has improved the safety in utilization, still reminds the leakage detection protection device unusual through alarm unit, has promoted user's use experience.
The test module 40 comprises a test key T1 and a resistor R1, one end of the test key T1 is electrically connected with the live wire L through the resistor R1, and the other end of the test key T1 is electrically connected with the first end A of the first leakage detection line 21 and the control electrode of the silicon controlled rectifier SCR1 respectively;
when a user presses a test key T1, under the condition that the leakage detection protection device is normal, the silicon controlled rectifier SCR3 is turned on, so that the leakage detection protection device is powered off; and after the user presses the test key T1, if the electric leakage detection protection device does not disconnect the power supply, the electric leakage detection protection device is indicated to have failed.
The user presses a test button T1 to detect whether all the leakage detection lines are open and whether the leakage protection function is normal, so that the use convenience is improved.
Example 2:
as shown in fig. 3, this embodiment is different from embodiment 1 in that:
in this embodiment, the leakage detection protection device further includes a utility power detection module 70, and when the leakage detection protection device is disconnected from the utility power (for example, when the plug of the leakage detection protection device is directly pulled out without cutting off the load power supply), the triode Q7 is turned off, so that the SCR4 is turned on, and further, the SCR3 is turned on, so that the switch S1 is turned off.
That is, the utility power detection module 70 sends out a power-off signal when the leakage detection protection device is disconnected from the utility power; the first driving module 30 receives the power-off signal and drives the action module 10 to disconnect the load power supply.
By arranging the electric detection module 70, the initial state of the electric leakage detection protection device is the state of disconnecting the load power supply when the electric leakage detection protection device is connected with the mains supply next time, and the use safety is improved.
Example 3:
as shown in fig. 4, this embodiment is different from embodiment 1 in that:
in the embodiment, the leakage detection protection device is a maintenance type leakage detection protection device, when the upper electric coil L1 is powered on, the upper electric coil L1 is powered off after the upper electric coil L1 is attracted to the switch S1, and the maintenance coil L3 is continuously powered on to generate a force for maintaining the switch S1 in a closed state.
The first driving module 30 causes the switch S1 to lose the force of maintaining in the closed state by turning off the power of the maintaining coil L3, thereby causing the switch S1 to turn off the load power.
By arranging the maintenance coil L3, when the electric leakage detection protection device is disconnected with the mains supply, the load power supply is disconnected by the electric leakage detection protection device, and when the electric leakage detection protection device is connected with the mains supply next time, the initial state of the electric leakage detection protection device is a state of disconnecting the load power supply; once the leakage detection protection device fails, the switch S1 cannot be maintained in a closed state, and the load power supply is disconnected, so that the use safety is further improved.
Example 4:
as shown in fig. 5, this embodiment is different from embodiment 1 in that:
the base electrode of the triode Q6 is electrically connected with the control electrode of the controllable silicon Q3 through the resistor R20, and under the condition that the electric leakage continuously occurs or the electric leakage detection line is disconnected, the reset key T2 is shielded, namely the reset key T2 is pressed without any reaction, the reset power-on function of the electric leakage detection protection device is disabled, and compared with the power-on moment of the embodiment 1, the safety is further improved.
The above embodiments are only for illustrating the present application, not for limiting the same, and various changes and modifications can be made by one skilled in the relevant art without departing from the spirit and scope of the present application, so that all equivalent technical solutions are also within the scope of the present application, and the scope of the present application is defined by the claims.
Claims (12)
1. The novel electric leakage detection protection device capable of prohibiting reset is characterized by comprising an action module (10), an electric leakage detection module (20), a first driving module (30) and a power-on prohibition module (60);
the action module (10) is used for switching on or switching off a load power supply;
the electric leakage detection module (20) is used for detecting whether the power line is in electric leakage or not and sending out an electric leakage signal when the electric leakage is detected;
the electric leakage detection module (20) comprises a first electric leakage detection line (21) and a second electric leakage detection line (22), wherein the first electric leakage detection line (21) covers a first current carrying line in the power line, and the second electric leakage detection line (22) covers a second current carrying line in the power line;
the first driving module (30) is used for receiving the leakage signal sent by the leakage detection module (20), and the first driving module (30) is also used for driving the action module (10) to disconnect a load power supply after receiving the leakage signal;
the electric leakage detection module (20) is further used for sending out a fault signal when the first electric leakage detection line (21) and/or the second electric leakage detection line (22) are/is opened;
the first driving module (30) is further used for receiving a fault signal sent by the electric leakage detection module (20), and the first driving module (30) is further used for driving the action module (10) to disconnect a load power supply after receiving the fault signal;
the power-on prohibition module (60) is used for receiving a fault signal sent by the electric leakage detection module (20), and the power-on prohibition module (60) is also used for prohibiting the electric leakage detection protection device from being reset and powered on after receiving the fault signal.
2. The novel reset-prohibited leakage detection protection device according to claim 1, further comprising a mains supply detection module (70), wherein the mains supply detection module (70) is configured to send a power-off signal when the leakage detection protection device is disconnected from the mains supply;
the first driving module (30) is further used for receiving a power-off signal sent by the commercial power detection module (70); the first driving module (30) is configured to drive the action module (10) to disconnect a load power supply after receiving a power-off signal.
3. A novel reset-prohibited leakage detection protection device according to claim 1, characterized in that the first end (a) of the first leakage detection line (21) is electrically connected to the first driving module (30);
the first end (B) of the second electric leakage detection line (22) is electrically connected with the first driving module (30), and the second end (D) of the second electric leakage detection line (22) is electrically connected with the second end (C) of the first electric leakage detection line (21).
4. A novel reset-prohibited leakage detection protection device according to claim 3, further comprising a test module (40), said test module (40) being electrically connected to said leakage detection module (20); the test module (40) comprises a test key (T1);
the first drive module (30) is further configured to: when the test key (T1) is pressed and the electric leakage detection module (20) works normally, the action module (10) is driven to disconnect the load power supply.
5. A novel reset-disabled leakage detection protection device, as in claim 4, wherein said test module (40) is configured to simulate a power line leakage.
6. The novel reset-prohibited leakage detection protection device according to claim 1, further comprising a rectifying module (50), wherein the rectifying module (50) is configured to rectify an alternating current into a direct current.
7. The novel reset-prohibited leakage detection protection device according to claim 1, wherein the power-on-prohibited module (60) includes a reset key (T2), and the action module (10) turns on the load power supply after the reset key (T2) is pressed.
8. The novel reset-prohibited leakage detection protection device according to claim 1, wherein the action module (10) comprises a trip coil (L2) and a switch (S1);
the first driving module (30) turns off the switch (S1) by driving the tripping coil (L2), and then turns off a load power supply.
9. The novel reset-prohibited leakage detection protection device according to claim 1, wherein the action module (10) includes a maintenance coil (L3) and a switch (S1);
the first driving module (30) causes the switch (S1) to lose the force of maintaining in the closed state by turning off the power of the maintaining coil (L3), thereby causing the switch (S1) to turn off the load power.
10. The novel reset-prohibited leakage detection protection device according to claim 1, wherein the power-on-prohibited module (60) further comprises an alarm unit, and the alarm unit is configured to send out an acoustic and/or optical alarm to prompt a user that the leakage detection protection device is in a state of power-on-prohibited for reset.
11. The novel reset-disabled leakage detection and protection device of claim 7, wherein said power-up-disabled module (60) is further configured such that said action module (10) does not turn on the load power supply when said reset key (T2) is pressed when said leakage detection and protection device is in a reset-up disabled state.
12. The novel reset-prohibited leakage detection protection device according to claim 8, wherein the two ends of the trip coil (L2) are connected in parallel to a first capacitor (C10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022111021608 | 2022-09-09 | ||
| CN202211102160 | 2022-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117712991A true CN117712991A (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211398744.4A Pending CN117712991A (en) | 2022-09-09 | 2022-11-09 | Novel inhibit electric leakage detection protection that resets device |
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| Country | Link |
|---|---|
| CN (1) | CN117712991A (en) |
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2022
- 2022-11-09 CN CN202211398744.4A patent/CN117712991A/en active Pending
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