CN212725831U - Socket tester capable of detecting zero ground reverse connection - Google Patents
Socket tester capable of detecting zero ground reverse connection Download PDFInfo
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- CN212725831U CN212725831U CN202021795523.7U CN202021795523U CN212725831U CN 212725831 U CN212725831 U CN 212725831U CN 202021795523 U CN202021795523 U CN 202021795523U CN 212725831 U CN212725831 U CN 212725831U
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Abstract
The utility model discloses a can detect socket tester that connects anti-rotation zero ground, participate in, the ground wire is participated in, first indicating module, second indicating module, third indicating module, rotary switch and voltmeter including the live wire. The rotary switch is provided with a first gear, a second gear and a third gear; when the rotary switch is in a second gear, the first terminal is connected with the ground pin, and the second terminal is connected with a shell or a grounding bar of the electric equipment; when the rotary switch is in a third gear, the first terminal is connected with the zero line pin, and the second terminal is connected with a shell or a grounding bar of the electric equipment; the voltmeter is used for testing the voltage between the first terminal and the second terminal. The embodiment of the utility model provides a pair of can detect zero ground and connect reverse socket tester, on prior art basis, can also detect zero line, ground wire and connect reverse to detect the socket more comprehensively, guarantee power consumption safety.
Description
Technical Field
The utility model belongs to the technical field of the electric power detects the instrument, especially, relate to a can detect socket tester that connects anti-reverse zero ground.
Background
The socket tester is a detection tool for detecting whether the internal wiring of the socket is correct or not and whether virtual connection exists or not, and can judge whether the wiring is correct or not through the combination of the on and off of a plurality of indicating lamps.
However, the existing socket tester cannot detect that the socket is connected reversely to zero ground, and once the socket is connected reversely to zero ground, the shell of the electric equipment is electrified, so that personal safety is endangered.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can detect the socket tester that connects inversely to zero ground to solve above-mentioned technical problem.
To achieve the purpose, the utility model adopts the following technical proposal:
a socket tester capable of detecting zero ground reversal, comprising:
the live wire plug pin is used for connecting a live wire jack of the socket;
the zero line pin is used for connecting a zero line jack of the socket;
the ground wire plug pin is used for connecting a ground wire jack of the socket;
the positive pole of the first indicating module is connected with the zero wire pin, and the negative pole of the first indicating module is connected with the ground wire pin;
the positive electrode of the second indication module is connected with the zero wire pin, and the negative electrode of the second indication module is connected with the live wire pin;
the positive electrode of the third indicating module is connected with the live wire pin, and the negative electrode of the third indicating module is connected with the ground wire pin;
the rotary switch is provided with a first wiring end and a second wiring end and is provided with a first gear, a second gear and a third gear; when the rotary switch is in a first gear, the first terminal floats, and the second terminal floats; when the rotary switch is in a second gear, the first terminal is connected with the ground pin, and the second terminal is connected with a shell or a grounding bar of the electric equipment; when the rotary switch is in a third gear, the first terminal is connected with the neutral wire pin, and the second terminal is connected with a shell or a grounding bar of the electric equipment;
a voltage test module to test a voltage between the first terminal and the second terminal.
As an optional technical scheme of the utility model, rotary switch still is equipped with the fourth and keeps off the position, works as rotary switch is in the fourth when keeping off the position, first wiring end is connected the zero line is participated in, the second wiring end is connected the live wire is participated in.
As an optional technical scheme of the utility model, the voltage test module is the voltmeter.
As an optional technical solution of the utility model, still include:
a leakage test button switch;
and the electric leakage test button switch and the electric leakage test protection resistor are connected between the zero wire pin and the ground wire pin in series.
As an optional technical solution of the present invention, the first indication module includes:
the first diode, the first resistor and the first indicator light are sequentially connected in series;
the second indication module includes:
the second diode, the second resistor and the second indicator light are sequentially connected in series;
the third indication module comprises:
and the third diode, the third resistor and the third indicator light are sequentially connected in series.
As an optional technical scheme of the utility model, first pilot lamp the second pilot lamp with the third pilot lamp is the LED lamp.
Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:
when the socket is used, the rotary switch is in a first gear, the live wire pin, the zero wire pin and the ground wire pin are respectively inserted into a live wire jack, a zero wire jack and a ground wire jack of a socket to be tested, and then whether wiring is correct or not is judged according to the indication of the indication module. The first indication module, the second indication module and the third indication module are represented by an LED1, an LED2 and an LED3 respectively, and the judgment mode is as follows:
1) when the LED2, the LED3 indicate (lights on) and the LED1 does not indicate (lights off), it indicates "wiring is correct"; 2) when the LED2 indicates (the light is on) and the LEDs 1 and 3 do not indicate (the light is off), the indication indicates "lack of ground wire"; 3) when the LED3 indicates (the lamp is on) and the LED1 and the LED2 do not indicate (the lamp is off), the zero line is indicated; 4) when the LED1 and the LED2 indicate (lights on) and the LED3 does not indicate (lights off), the indication indicates "phase zero misconnection"; 5) when the LED1 and the LED3 indicate (lights on) and the LED2 does not indicate (lights off), it indicates "phase ground is wrong"; 6) when the LED1, the LED2 and the LED3 indicate (light on), they indicate "phase-to-ground fault and lack of ground" or "phase-to-zero fault and lack of zero"; 7) when the LEDs 1, 2, and 3 do not indicate (lights off), they indicate "out of fire".
After the judgment is finished, the rotary switch is switched to the second gear and the third gear respectively, and the voltage value measured by the voltage testing module is observed when the second gear and the third gear are observed respectively. When the second gear voltage value is equal to zero and the third gear voltage value is equal to a small voltage (for example, between 0.6V and 1.4V), the zero line and the ground line are not reversed; when the second gear voltage value is equal to a small voltage (for example, between 0.6V and 1.4V), and the third gear voltage value is equal to zero, it represents the indirect inversion of the zero line and the ground line.
The embodiment of the utility model provides a pair of can detect zero ground and connect reverse socket tester, on prior art basis, can also detect zero line, ground wire and connect reverse to detect the socket more comprehensively, guarantee power consumption safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a circuit diagram of a socket tester capable of detecting a reverse zero ground connection provided by the embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the present embodiment provides a socket tester capable of detecting reverse zero ground, including:
the live wire pin L is used for connecting a live wire jack of the socket;
the zero line pin N is used for connecting a zero line jack of the socket;
the ground wire pin PE is used for connecting a ground wire jack of the socket;
the positive pole of the first indicating module is connected with the zero line pin N, and the negative pole of the first indicating module is connected with the ground wire pin PE;
the positive electrode of the second indication module is connected with the zero line pin N, and the negative electrode of the second indication module is connected with the live line pin L;
the positive electrode of the third indicating module is connected with the live wire pin L, and the negative electrode of the third indicating module is connected with the ground wire pin PE;
the rotary switch SW is provided with a first terminal and a second terminal, and is provided with a first gear 1, a second gear 2, a third gear 3 and a fourth gear 4; when the rotary switch SW is in a first gear 1, the first terminal floats empty, and the second terminal floats empty; when the rotary switch SW is in the second gear 2, the first terminal is connected with the ground wire pin PE, and the second terminal is connected with a shell or a grounding bar of the electric equipment through the jointing clamp J; when the rotary switch SW is in a third gear 3, the first terminal is connected with the neutral wire pin N, and the second terminal is connected with a shell or a grounding bar of the electric equipment through a jointing clamp J; when the rotary switch SW is in a fourth gear 4, the first terminal is connected with the zero wire pin N, and the second terminal is connected with the live wire pin L;
the voltage testing module V is used for testing the voltage between the first terminal and the second terminal;
leakage test button switch K1;
the earth leakage test protection resistor R4, the earth leakage test button switch K1 and the earth leakage test protection resistor R4 are connected in series between the neutral pin N and the ground pin PE.
As an optional manner of this embodiment, the voltage testing module V is a voltmeter, and can display a voltage value.
As an optional manner of this embodiment, the first indicating module includes: a first diode D1, a first resistor R1 and a first indicator light LED1 connected in series in sequence; the second indication module includes: a second diode D2, a second resistor R2 and a second indicator light LED2 connected in series in this order; the third indicating module comprises: a third diode D3, a third resistor R3 and a third indicator light LED3 connected in series.
Therefore, the socket tester capable of detecting the reverse zero-ground connection provided by the embodiment has the working principle that:
firstly, switch over rotary switch SW to first fender position 1, neutral gear promptly, then insert (await measuring) live wire jack, zero line jack, the ground wire jack of socket with live wire pin L, zero line pin N, ground wire pin PE respectively, then judge according to the instruction of three pilot lamps whether correct the wiring, concrete judgement mode is as follows:
1) when the LED2 and the LED3 are turned on and the LED1 is turned off, the wiring is correct;
2) when the LED2 is on and the LED1 and the LED3 are off, the circuit represents a 'lack of ground wire', a leakage connection or a virtual ground wire;
3) when the LED3 is on and the LED1 and the LED2 are off, the zero line is indicated to be absent, and the zero line is missed or connected in a virtual mode;
4) when the LED1 and the LED2 are turned on and the LED3 is turned off, the indication is that the phase zero is connected in a wrong way, and the direct current and the zero current are indirectly reversed;
5) when the LED1 and the LED3 are turned on and the LED2 is turned off, the indication is that the phases are connected in a wrong way, and the connection between the live wire and the ground wire is reversed;
6) when the LED1, the LED2 and the LED3 are all on, the indication is that the phase and the ground are wrong, the live wire is connected to the position of the ground wire in a wrong way and is connected with the leakage or the virtual ground wire, or the indication is that the phase and the zero are wrong and the zero is connected with the live wire in a wrong way and is connected with the zero wire in a leakage or virtual way;
7) when the LED1, the LED2 and the LED3 lamps are completely turned off, the LED lamps are indicated to be in short of live wire, and are in leakage connection or virtual connection with the live wire.
Secondly, after the wiring is judged to be correct, the rotary switch SW is switched to a second gear 2 and a third gear 3 respectively, and voltage values measured by the voltmeter at the second gear 2 and the third gear 3 are observed respectively to judge whether the zero ground is reversely connected or not. The specific judgment method is as follows:
since the housing of the consumer or the ground bar in the consumer can be considered as a standard ground, if the neutral ground is not reversed, the voltage tested in the second gear 2 is "ground voltage", the voltage value should be equal to zero, the voltage tested in the third gear 3 is "zero ground voltage", there is usually a neutral offset in the power supply, so the "zero ground voltage" is a small voltage value, usually less than 2V, for example between 0.6V and 1.4V.
If the neutral ground is reversed, the voltage of the second stage 2 test is substantially "zero ground", the voltage value is equal to a small voltage (e.g., between 0.6V and 1.4V), and the voltage of the third stage test is substantially "ground", the voltage value is equal to zero.
Therefore, when the second gear voltage value is equal to zero and the third gear voltage value is equal to a small voltage (for example, between 0.6V and 1.4V), it indicates that no reflection occurs between the neutral wire and the ground wire; when the second gear voltage value is equal to a small voltage (for example, between 0.6V and 1.4V), and the third gear voltage value is equal to zero, it represents the indirect inversion of the zero line and the ground line.
And thirdly, after the wiring is judged to be correct, the rotary switch SW is switched to the fourth gear 4, and the voltage between the live wire and the zero wire is tested to judge whether the voltage meets the requirements of the electric equipment.
Fourthly, after the wiring is judged to be correct, whether the air switch (or other corresponding breakers) corresponding to the socket is tripped or not is judged by pressing the electric leakage test button switch K1, and therefore whether the electric leakage performance of the socket is good or not is judged. When the leakage test button switch K1 is pressed, if the air switch is tripped, the leakage performance of the socket is complete, otherwise, the leakage performance of the socket is incomplete.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. A socket tester capable of detecting a zero ground reversal, comprising:
the live wire plug pin is used for connecting a live wire jack of the socket;
the zero line pin is used for connecting a zero line jack of the socket;
the ground wire plug pin is used for connecting a ground wire jack of the socket;
the positive pole of the first indicating module is connected with the zero wire pin, and the negative pole of the first indicating module is connected with the ground wire pin;
the positive electrode of the second indication module is connected with the zero wire pin, and the negative electrode of the second indication module is connected with the live wire pin;
the positive electrode of the third indicating module is connected with the live wire pin, and the negative electrode of the third indicating module is connected with the ground wire pin;
the rotary switch is provided with a first wiring end and a second wiring end and is provided with a first gear, a second gear and a third gear; when the rotary switch is in a first gear, the first terminal floats, and the second terminal floats; when the rotary switch is in a second gear, the first terminal is connected with the ground pin, and the second terminal is connected with a shell or a grounding bar of the electric equipment; when the rotary switch is in a third gear, the first terminal is connected with the neutral wire pin, and the second terminal is connected with a shell or a grounding bar of the electric equipment;
a voltage test module to test a voltage between the first terminal and the second terminal.
2. The socket tester capable of detecting zero ground reversal of claim 1, wherein:
the rotary switch is further provided with a fourth gear, and when the rotary switch is located at the fourth gear, the second terminal is connected with the live wire plug pin.
3. The socket tester capable of detecting zero ground reversal of claim 1, wherein:
the voltage testing module is a voltmeter.
4. The socket tester capable of detecting zero ground reversal of claim 1, further comprising:
a leakage test button switch;
and the electric leakage test button switch and the electric leakage test protection resistor are connected between the zero wire pin and the ground wire pin in series.
5. The socket tester capable of detecting zero ground reversal of claim 1, wherein:
the first indication module comprises:
the first diode, the first resistor and the first indicator light are sequentially connected in series;
the second indication module includes:
the second diode, the second resistor and the second indicator light are sequentially connected in series;
the third indication module comprises:
and the third diode, the third resistor and the third indicator light are sequentially connected in series.
6. The socket tester capable of detecting zero ground reversal of claim 5, wherein:
the first indicator light, the second indicator light and the third indicator light are all LED lights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021795523.7U CN212725831U (en) | 2020-08-25 | 2020-08-25 | Socket tester capable of detecting zero ground reverse connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021795523.7U CN212725831U (en) | 2020-08-25 | 2020-08-25 | Socket tester capable of detecting zero ground reverse connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212725831U true CN212725831U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021795523.7U Active CN212725831U (en) | 2020-08-25 | 2020-08-25 | Socket tester capable of detecting zero ground reverse connection |
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| Country | Link |
|---|---|
| CN (1) | CN212725831U (en) |
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2020
- 2020-08-25 CN CN202021795523.7U patent/CN212725831U/en active Active
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