CN218767183U

CN218767183U - Direct current withstand voltage tester with earth leakage protection mechanism

Info

Publication number: CN218767183U
Application number: CN202222847152.8U
Authority: CN
Inventors: 周玉玲
Original assignee: Dongguan Kafeibo New Material Technology Co ltd
Current assignee: Guangdong Jiaming Sports Goods Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-28
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a direct current withstand voltage tester with earth leakage protection mechanism, including alarm component, tester body and bottom plate, the tester body is installed at the top of bottom plate, switch is installed to positive one side of tester body, main circuit assembly is installed to inside top one side of tester body, zero sequence current transformer is installed to main circuit assembly's bottom, circuit breaker auxiliary contact is installed to main circuit assembly's bottom one side, the fuse is installed to main circuit assembly's bottom opposite side. The utility model discloses an install circuit breaker auxiliary contact in bottom one side of main circuit assembly, when the main loop had the leakage current, because the shunt opening tripper of circuit breaker auxiliary contact and main loop switch establishes ties into a return circuit, consequently circuit breaker auxiliary contact switch-on shunt opening tripper and break off air switch make it fall off the floodgate, and the main loop of cut-off circuit has improved the security of device.

Description

Direct current withstand voltage tester with earth leakage protection mechanism

Technical Field

The utility model relates to a withstand voltage tester technical field specifically is a direct current withstand voltage tester with earth leakage protection mechanism.

Background

The voltage withstanding test is one of the main methods for testing overvoltage bearing capacity of electrical appliances, electrical equipment, electrical devices, electrical lines, electrical safety appliances and the like, and is also used for detecting whether equipment voltage is safely used, because the operation object of the voltage withstanding test is electricity, the voltage withstanding test needs to be careful during operation so as to avoid causing damage, and in the process of the voltage withstanding test, the most common danger is electric leakage danger sent in the test process, so a direct current voltage withstanding tester with an electric leakage protection mechanism is needed.

The existing DC withstand voltage tester has the following defects:

1. when the existing direct current withstand voltage tester is used for testing the withstand voltage capability of an electric appliance, electric equipment, an electric device, an electric circuit and an electrical safety appliance, the existing direct current withstand voltage tester is usually used for simply performing earth leakage protection by using grounding, and cannot instantly cut off a circuit in the device when electric leakage occurs, so that a worker is easily subjected to electric shock danger when the device leaks electricity, and the safety of the device is reduced;

2. current direct current withstand voltage tester is often difficult for when the electric leakage takes place to know by the staff, if the staff closely contacts direct current withstand voltage tester this moment and can lead to the emergence of electrocuteeing, causes the threat to personal safety, has reduced the security of device, and this we propose a direct current withstand voltage tester with earth leakage protection mechanism and solve current problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a direct current withstand voltage tester with earth leakage protection mechanism to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a direct current withstand voltage tester with earth leakage protection mechanism, includes alarm component, tester body and bottom plate, the tester body is installed at the top of bottom plate, switch is installed to positive one side of tester body, high voltage output interface is installed to the positive opposite side of tester body, voltage adjust knob is installed at the front center of tester body, power source is installed to back one side of tester body, there is the chamber door back opposite side of tester body through hinge movable mounting, the warning subassembly is installed to top one side of tester body, alarm component is installed at the top of tester body, main circuit assembly is installed to inside top one side of tester body, zero sequence current transformer is installed to the bottom of main circuit assembly, circuit breaker auxiliary contact is installed to bottom one side of main circuit assembly, the fuse is installed to the bottom opposite side of main circuit assembly, air switch is installed to outside one side of main circuit assembly, shunt release is installed to outside one side of air switch.

Preferably, a loudspeaker is installed in the alarm assembly, and a warning lamp is installed at the top of the loudspeaker.

Preferably, three sets of digital display devices are installed to the positive top equidistance of tester body, and two sets of pilot lamps are installed to positive one side of tester body.

Preferably, two groups of supporting legs are installed on two sides of the bottom plate, and insulating pads are installed at the bottoms of the supporting legs.

Preferably, install the data plate seat in the warning subassembly, and the top of data plate seat installs the triangle warning sign.

Preferably, a locking piece is installed on one side of the front surface of the box door, and a handle is installed on the other side of the front surface of the box door.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an install circuit breaker auxiliary contact in bottom one side of main circuit assembly, when the main loop has the leakage current, because the shunt release of circuit breaker auxiliary contact and main loop switch establishes ties into a return circuit, therefore circuit breaker auxiliary contact switch-on shunt release and break off air switch make it fall off the floodgate, the main loop of cut-off circuit, auxiliary contact also can switch on sound when guaranteeing device safety, the light signal device sends the leakage alarm signal, the security that can improve the device through dual guarantee.

2. The utility model discloses an install the alarm subassembly at the top of tester body, be connected through the electricity of alarm subassembly and circuit breaker auxiliary contact tester, when leakage current, sound, light signal are sent out with the cooperation of warning light to the inside speaker of accessible alarm subassembly, send leakage alarm signal through the cooperation with vision and sense of hearing in order to remind the staff, can be convenient for the staff and keep away from the electric leakage region fast, have improved the practicality of device.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic front structural view of the present invention;

fig. 3 is a schematic view of the back structure of the present invention;

fig. 4 is the local structure schematic diagram of the tester body section of the utility model.

In the figure: 1. an alarm component; 101. a speaker; 102. a warning light; 2. a tester body; 201. a digital display; 202. a power switch; 203. an indicator light; 204. a voltage adjustment knob; 205. a high-voltage output interface; 206. a power interface; 3. a base plate; 301. a support leg; 302. an insulating pad; 4. a warning component; 401. a nameplate base; 402. a triangular warning board; 5. a box door; 501. a handle; 502. a lock; 6. a main circuit assembly; 601. a circuit breaker auxiliary contact; 602. a zero sequence current transformer; 603. a fuse; 604. a shunt release; 605. an air switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments 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 work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a direct current withstand voltage tester with a leakage protection mechanism comprises an alarm component 1, a tester body 2 and a bottom plate 3, wherein the tester body 2 is installed at the top of the bottom plate 3, the bottom plate 3 can provide an installation position for a device and can be conveniently installed, the tester body 2 can adopt an LW2672 type tester and can carry out withstand voltage test on the tested electric appliance, a power switch 202 is installed on one side of the front surface of the tester body 2, the power supply of the tester body 2 can be controlled by opening and closing of the power switch 202, the tester body 2 can be conveniently controlled by a worker to operate, a high-voltage output interface 205 is installed on the other side of the front surface of the tester body 2, the high-voltage output interface 205 can provide an external connection position of a circuit of the tested electric appliance and can be conveniently carried out withstand voltage test on the tested electric appliance, a voltage adjusting knob 204 is installed at the center of the front surface of the tester body 2, the output voltage of the device can be adjusted by rotating the voltage adjusting knob 204, different voltages can be conveniently adjusted by workers to test, the power interface 206 is installed on one side of the back of the tester body 2, the power interface 206 can provide an external position of a device power supply and can supply power for the operation of the device, the box door 5 is movably installed on the other side of the back of the tester body 2 through a hinge, the workers can conveniently overhaul and maintain the electrical devices inside the tester body 2 by opening and closing the box door 5, the warning component 4 is installed on one side of the top of the tester body 2, the warning component 4 can be used for warning people to cautiously operate, the warning component 1 is installed on the top of the tester body 2, the electric connection between the warning component 1 and the circuit breaker auxiliary contact tester 601 is realized, when leakage current exists, the sound can be generated by the matching of the loudspeaker 101 and the warning lamp 102 inside the warning component 1, the optical signal, send the leakage alarm signal through cooperating with the sense of hearing to remind the staff, can facilitate the staff to keep away from the leakage area fast, have improved the practicability of the apparatus, the top one side in the tester body 2 is fitted with the main circuit assembly 6, can utilize the main circuit assembly 6 to provide the circulation position of the apparatus internal circuit, can facilitate the apparatus to run, the bottom of the main circuit assembly 6 is fitted with the zero sequence current transformer 602, the zero sequence current transformer 602 can adopt LXK-120 type, the current transformer 602 can be used with the protective relaying device or signal cooperation when the power system produces the zero sequence ground current, make the apparatus component act, realize protecting or monitoring, the bottom one side of the main circuit assembly 6 is fitted with the auxiliary contact 601 of the circuit breaker, the auxiliary contact 601 of the circuit breaker can adopt TGB1N type, utilize the auxiliary contact 601 of the circuit breaker to be used in the secondary circuit, when the main circuit has leakage current, the auxiliary contact 601 of the circuit breaker and the shunt release 604 of the main circuit switch are connected in series to form a circuit, so that the auxiliary contact 601 of the circuit breaker is connected with the shunt release 604 to cut off the air switch 605, so as to break off the circuit main circuit, and the auxiliary contact can also be connected with an acoustic and optical signal device to send out a leakage alarm signal, so that the safety of the device can be improved by double protection, the other side of the bottom of the main circuit assembly 6 is provided with a fuse 603, the fuse 603 can adopt RW-12 type, the fuse 603 melts the melt by the heat generated by the fuse 603 after the current exceeds a specified value for a period of time, thereby the circuit is cut off to achieve the protection function, one side of the outer part of the main circuit assembly 6 is provided with the air switch 605, the air switch 605 can adopt SH203 type, the air switch 605 can not only complete the contact and the breaking of the circuit, but also protect the short circuit, serious overload, undervoltage and the like of the circuit or electrical equipment, the safety of the device is improved, one side of the outside of the air switch 605 is provided with a shunt release 604, the shunt release 604 can adopt M1-63 type, the shunt release 604 is an accessory for remotely controlling the shunt, when the power voltage is equal to any voltage between 70% and 110% of the rated control power voltage, the circuit can be reliably broken, and the safety of the operation of the device is improved.

Further, install speaker 101 in the alarm subassembly 1, and the top of speaker 101 is installed and is warned lamp 102, but speaker 101 circular telegram sound, and warning lamp 102 can send out optical signal, can be convenient for remind the staff through the cooperation.

Further, three digital display 201 of group are installed to the positive top equidistance of tester body 2, and the positive one side of tester body 2 installs two sets of pilot lamps 203, can show voltage data through digital display 201, and the staff of can being convenient for observes, but through pilot lamp 203 display device's operating information, can be convenient for the staff opens the device and stops, has improved the practicality of device.

Further, two sets of landing legs 301 are installed to bottom plate 3's bottom both sides, and insulating pad 302 is installed to landing leg 301's bottom, and landing leg 301 can support the device, can increase the frictional force of landing leg 301 and ground when insulating device and ground through insulating pad 302, stability when can improving the device and place.

Further, install data plate seat 401 in warning subassembly 4, and the triangle warning sign 402 is installed at data plate seat 401's top, and data plate seat 401 can provide the mounted position of triangle warning sign 402, can improve the eye-catching nature of device through triangle warning sign 402, can let the staff improve vigilance.

Further, latch 502 is installed to the front one side of chamber door 5, and handle 501 is installed to the front opposite side of chamber door 5, can lock chamber door 5 through latch 502, prevents that irrelevant personnel from opening and take place danger, can provide the position of holding of staff's hand through handle 501, can be convenient for the staff uses handle 501 to open chamber door 5.

The working principle is as follows: when the main circuit of the device has leakage current, because the circuit breaker auxiliary contact 601 and the shunt release 604 of the main circuit switch are connected in series to form a loop, the circuit breaker auxiliary contact 601 is connected with the shunt release 604 to disconnect the air switch 605, so that the air switch is switched off, the circuit main circuit is cut off, the auxiliary contact can be connected with a sound and light signal device while the safety of the device is ensured, and a leakage alarm signal is sent out.

The details of the present invention are well known to those skilled in the art.

Finally, it is to be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified and replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a direct current withstand voltage tester with earth leakage protection mechanism, includes alarm subassembly (1), tester body (2) and bottom plate (3), its characterized in that: tester body (2) is installed at the top of bottom plate (3), switch (202) is installed to the positive one side of tester body (2), high voltage output interface (205) are installed to the positive opposite side of tester body (2), voltage control knob (204) is installed at the front center of tester body (2), power source (206) is installed to back one side of tester body (2), there is chamber door (5) through hinge movable mounting the back opposite side of tester body (2), warning subassembly (4) are installed to top one side of tester body (2), alarm subassembly (1) is installed at the top of tester body (2), main circuit assembly (6) is installed to inside top one side of tester body (2), zero sequence current transformer (602) is installed to the bottom of main circuit assembly (6), circuit breaker auxiliary contact (601) is installed to bottom one side of main circuit assembly (6), fuse (603) is installed to the bottom opposite side of main circuit assembly (6), air switch (605) is installed to outside one side of main circuit assembly (6), shunt (604) are installed to outside.

2. The direct-current withstand voltage tester with the earth leakage protection mechanism according to claim 1, characterized in that: install speaker (101) in alarm component (1), and warning light (102) are installed to the top of speaker (101).

3. The direct-current withstand voltage tester with the earth leakage protection mechanism according to claim 1, characterized in that: three sets of digital display (201) are installed to the positive top equidistance of tester body (2), and two sets of pilot lamps (203) are installed to the positive one side of tester body (2).

4. The direct-current withstand voltage tester with the earth leakage protection mechanism according to claim 1, characterized in that: two groups of supporting legs (301) are installed on two sides of the bottom plate (3), and insulating pads (302) are installed at the bottoms of the supporting legs (301).

5. The direct-current withstand voltage tester with the earth leakage protection mechanism according to claim 1, characterized in that: install data plate seat (401) in warning subassembly (4), and triangle warning sign (402) are installed at the top of data plate seat (401).

6. The direct-current withstand voltage tester with the earth leakage protection mechanism according to claim 1, characterized in that: a locking piece (502) is installed on one side of the front face of the box door (5), and a handle (501) is installed on the other side of the front face of the box door (5).