CN218647053U - System for electrified warning between ground wire and zero line - Google Patents
System for electrified warning between ground wire and zero line Download PDFInfo
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- CN218647053U CN218647053U CN202222258566.7U CN202222258566U CN218647053U CN 218647053 U CN218647053 U CN 218647053U CN 202222258566 U CN202222258566 U CN 202222258566U CN 218647053 U CN218647053 U CN 218647053U
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Abstract
The utility model discloses a system for electrified alarm between a ground wire and a zero line, which relates to the field of leakage protection and comprises an electrified detection module; the live detection module is used for detecting a voltage value between the zero line and the ground wire and also used for giving an alarm when the detected voltage value is greater than a preset value; compared with the prior art, the live detection module is arranged to detect whether the zero line and the ground wire are electrified or not, and alarm is given out when the zero line and the ground wire are electrified, so that the use safety is improved; still through sending alarm signal to the load controller, judge by the load controller whether need the disconnected power, guarantee the user when the guarantee user is safe in utilization and experienced, in addition, the work of judgement is accomplished by the load controller, need not to install the singlechip additional, has improved the hardware rate of utilization, the cost is reduced.
Description
Technical Field
The application relates to the field of leakage protection, in particular to a system for electrified alarm between a ground wire and a zero line.
Background
The general leakage protector executes the action of leakage protection when leakage current exists in a power line, voltage exists between a zero line and a ground line in real life, but the situation of leakage current does not exist in the power line, and a user has the risk of electric shock under the situation;
the leakage protection device with ground wire live protection disclosed in the chinese application CN103178492A comprises three poles of phase line L, zero line N and ground line E with switches, zero sequence current transformers passing through the phase line L and the zero line N, a test circuit, a release, a rectification circuit, a power supply step-down and a thyristor, and is further provided with a current detector and a dual-input-end amplifier, wherein one end of a primary coil of the current detector is connected with the ground line E, the other end of the primary coil of the current detector is connected with the zero line N after being connected with a large-resistance current-limiting step-down circuit in series, a secondary coil of the current detector is connected with one input end of the dual-input-end amplifier, two output ends of the dual-input-end amplifier are respectively connected with trigger electrodes of the two thyristors, and the output end of the zero sequence current transformer is connected with the other input end of the dual-input-end amplifier; this application takes place just to carry out earth leakage protection when the electric leakage, when there is voltage but not having the leakage current in the power cord between zero line and the ground wire, can not effectively remind the user, has the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
Aiming at the defects existing in the prior art, the safety of the leakage protection system is improved.
2. Technical scheme
In order to solve the problems, the system for alarming the electrification between the ground wire and the zero line particularly comprises an electrification detection module;
the live detection module is used for detecting a voltage value between the zero line and the ground wire and also used for giving an alarm when the detected voltage value is larger than a preset value.
Wherein, the system also comprises a load controller;
the live detection module is also used for sending out an alarm signal when the detected voltage value is larger than a preset value, and the load controller is used for receiving the alarm signal.
The system further comprises a leakage protector, and the leakage protector is used for leakage protection.
The system also comprises a communication module, wherein the live detection module is in communication connection with the load controller through the communication module;
the load controller is also in communication connection with the leakage protector through the communication module.
The load controller is also used for sending out a power-off signal after receiving the alarm signal;
the earth leakage protector is also used for receiving a power-off signal, and the earth leakage protector is set to disconnect the power supply of the load after receiving the power-off signal.
The live detection module comprises a detection circuit, a rectification circuit, a drive circuit and an alarm circuit;
the detection circuit is used for detecting a voltage value between the zero line and the ground wire;
the rectifying circuit is used for rectifying alternating current into direct current;
when the voltage value detected by the detection circuit is larger than the preset value, the driving circuit drives the alarm circuit to send out sound and/or light alarm.
The driving circuit is also used for sending out an alarm signal when the voltage value detected by the detection circuit is greater than a preset value.
Wherein, the alarm circuit is LED pilot lamp and/or bee calling organ.
3. Advantageous effects of the present application
Compared with the prior art, the live detection module is arranged to detect whether the zero line and the ground wire are electrified or not, and the alarm is given out when the zero line and the ground wire are electrified, so that the use safety is improved;
still through sending alarm signal to the load controller, judge by the load controller whether need the disconnected power, guarantee the user when the guarantee user is safe in utilization and experienced, in addition, the work of judgement is accomplished by the load controller, need not to install the singlechip additional, has improved the hardware rate of utilization, the cost is reduced.
Drawings
FIG. 1 is a block schematic diagram of an embodiment of the present application;
fig. 2 is a schematic diagram of an embodiment of the present application.
Detailed Description
The following detailed description of embodiments of the present application will be described in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
Example 1:
in the present embodiment, the present system is provided on a water heater.
As shown in fig. 1, the system for alarming in a live state between a ground wire and a zero line comprises a live detection module 1, a communication module 2, a leakage protector 3 and a load controller 4, wherein the load controller 4 is a water heater controller;
the load controller 4 is respectively in communication connection with the live detection module 1 and the leakage protector 3 through the communication module 2.
As shown in fig. 2, the electrification detecting module 1 includes a detecting circuit 11, a rectifying circuit 12, a driving circuit 13, and an alarm circuit 14;
the detection circuit 11 is used for detecting a voltage value between the zero line N and the ground line E;
the rectifying circuit 12 is used for rectifying alternating current into direct current;
in this embodiment, the preset value is 40V, and a person skilled in the art adjusts parameters of components such as the resistor R8 according to requirements, so as to adjust the preset value;
when the voltage value between the zero line N and the ground wire E is larger than 40V, the optocoupler U2 is conducted, so that the triode Q1 and the triode Q2 of the driving circuit 13 are conducted, the indicator light LED of the alarm circuit 14 flickers, and meanwhile, the driving circuit 13 sends an alarm signal to the load controller 4 through the optocoupler U1 and the port J1.
After the load controller 4 receives the alarm signal, the load controller 4 can determine whether to disconnect the power supply of the load according to the requirements of the equipment or in combination with other safety-related information;
when the load controller 4 judges that the power needs to be disconnected, a high level is sent to the leakage protector 3 through the optocoupler U4, namely, a power-off signal is sent, and the leakage protector 3 disconnects the power of the load after receiving the signal.
The live detection module 1 is arranged to detect whether the zero line N and the ground line E are electrified or not, and alarm is given out when the zero line N and the ground line E are electrified, so that the use safety is improved;
still through sending alarm signal to load controller 4, judge whether need the disconnected power by load controller 4, ensure user's use when guaranteeing user safe in utilization and experienced, in addition, the work of judgement is accomplished by load controller 4, need not to install the singlechip additional, has improved the hardware rate of utilization, the cost is reduced.
Example 2:
the present embodiment is different from embodiment 1 in that a buzzer is provided in the alarm circuit 14 in the present embodiment, and the buzzer is used for giving an audible alarm; a person skilled in the art can use the buzzer and the LED lamp in a combined manner according to actual requirements, and then sound and light alarms are given out.
The above embodiments are merely illustrative, and not restrictive, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present application, and therefore all equivalent technical solutions also fall within the scope of the present application, and the scope of the present application is defined by the appended claims.
Claims (4)
1. A system for electrified alarm between a ground wire and a zero wire is characterized by comprising an electrified detection module (1);
the live detection module (1) is used for detecting a voltage value between a zero line and a ground wire, and the live detection module (1) is also used for giving an alarm when the detected voltage value is greater than a preset value;
the system further comprises a load controller (4); the live detection module (1) is also used for sending out an alarm signal when the detected voltage value is greater than a preset value, and the load controller (4) is used for receiving the alarm signal;
the system also comprises a leakage protector (3), wherein the leakage protector (3) is used for leakage protection;
the system also comprises a communication module (2), and the live detection module (1) is in communication connection with the load controller (4) through the communication module (2);
the load controller (4) is also in communication connection with the leakage protector (3) through the communication module (2);
the load controller (4) is also used for sending a power-off signal after receiving the alarm signal;
the leakage protector (3) is also used for receiving a power-off signal, and the leakage protector (3) is set to disconnect the power supply of the load after receiving the power-off signal.
2. The system for the live alarm between the ground wire and the neutral wire according to claim 1, wherein the live detection module (1) comprises a detection circuit (11), a rectification circuit (12), a driving circuit (13) and an alarm circuit (14);
the detection circuit (11) is used for detecting a voltage value between the zero line and the ground wire;
the rectifying circuit (12) is used for rectifying alternating current into direct current;
when the voltage value detected by the detection circuit (11) is larger than a preset value, the driving circuit (13) drives the alarm circuit (14) to give out an acoustic and/or optical alarm.
3. A system for live alarm between earth and neutral according to claim 2, characterized in that said driving circuit (13) is further adapted to send out an alarm signal when the voltage value detected by said detection circuit (11) is greater than a preset value.
4. A system for live alarm between earth and neutral wires according to claim 3, characterized in that said alarm circuit (14) is an LED indicator and/or a buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222258566.7U CN218647053U (en) | 2022-08-26 | 2022-08-26 | System for electrified warning between ground wire and zero line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222258566.7U CN218647053U (en) | 2022-08-26 | 2022-08-26 | System for electrified warning between ground wire and zero line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218647053U true CN218647053U (en) | 2023-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222258566.7U Active CN218647053U (en) | 2022-08-26 | 2022-08-26 | System for electrified warning between ground wire and zero line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218647053U (en) |
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2022
- 2022-08-26 CN CN202222258566.7U patent/CN218647053U/en active Active
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