CN215894740U

CN215894740U - Voltage measuring box for protective pressing plate

Info

Publication number: CN215894740U
Application number: CN202122334230.XU
Authority: CN
Inventors: 赵逍; 蒋炟良; 夏艳; 陈武; 王刚; 冯藩; 陈科宇
Original assignee: Mianyang Power Supply Company State Grid Sichuan Electric Power Co ltd
Current assignee: Mianyang Power Supply Company State Grid Sichuan Electric Power Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-02-22
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a voltage measuring box of a protective pressing plate, which comprises a measuring circuit, wherein the measuring circuit comprises a voltmeter, a testing connecting piece and a 25k omega resistor, and the voltmeter, the testing connecting piece and the resistor are connected in series. The utility model aims to provide a voltage measuring box of a protective pressing plate, which avoids the phenomenon of switch error tripping or direct current fuse fusing caused by gear selection error.

Description

Voltage measuring box for protective pressing plate

Technical Field

The utility model relates to the technical field of voltage measurement, in particular to a voltage measurement box of a protection pressing plate.

Background

The protection pressing plate is also called a protection connecting sheet, is a bridge and a link of the protection device which are connected with external wiring, and is related to the function of protection and whether an action outlet can normally play a role. In order to check whether the protection device has misoperation (namely, a contact is closed and does not return) in operation, whether voltage exists at two ends of the pressure plate or not needs to be measured before the protection pressure plate is put into operation, and a common test mode in the prior art is as follows: directly measuring whether voltage exists between two terminals of the protection pressing plate by using a universal meter; when the circuit is normal, the protection contact is not closed, a loop cannot be formed, and the voltage at two ends is 0; when the voltage is about 220V, the protective contact is closed, and the pressing plate is strictly forbidden.

Because the universal meter has a plurality of gears (current gear, resistance gear and voltage gear), if the gear selection of the universal meter is wrong (the resistance gear or the current gear is selected), a tripping circuit is directly connected, so that the switch is tripped, and the phenomenon of switch tripping error or direct current fuse fusing is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a voltage measuring box of a protective pressing plate, which avoids the phenomenon of switch error tripping or direct current fuse fusing caused by gear selection error.

The utility model is realized by the following technical scheme:

the utility model provides a protection clamp plate voltage measurement box, includes measuring circuit, measuring circuit includes voltmeter, test connection spare and 25k omega's resistance, the voltmeter the test connection spare and the resistance is established ties.

Preferably, the test connecting piece includes test hole and test needle, the voltmeter, the test hole reaches the resistance is established ties, the test needle with the test hole grafting.

Preferably, the testing device further comprises a box body, the voltmeter and the resistor are arranged in the box body, and the testing hole is formed in the first surface of the box body.

Preferably, the test holes are provided in two, and the position of one of the test holes is movable on the first surface.

Preferably, the first surface is provided with a sliding groove, and one of the test holes is arranged in the sliding groove and can slide along the sliding groove.

Preferably, the second surface of the box body is also provided with a reading window, and the reading surface of the voltmeter faces the reading window.

Preferably, a transparent cover body is arranged on the reading window.

Preferably, an indicator light is further arranged on the box body, and the indicator light is connected in series in the measuring circuit.

Preferably, the first surface and the second surface are different surfaces of the cartridge body.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. the whole voltage measuring box is only provided with one measuring gear, and the testing gear does not need to be manually selected, so that the phenomenon of switch error tripping or direct current fuse fusing caused by selecting an error gear by misoperation is avoided;

2. the test connecting piece consists of a test hole and a test needle, so that a worker can conveniently connect the protection pressing plate to the voltage measuring box;

3. the position of the test hole can be adjusted, so that one voltage measurement box can measure the protection pressing plates of different models, and the adaptability of the voltage measurement box to the environment is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:

FIG. 1 is a schematic view of the top of the voltage measurement box of the present invention;

FIG. 2 is a schematic structural view of the bottom of the voltage measuring box of the present invention;

FIG. 3 is a schematic diagram of a measurement circuit of the voltage measurement box of the present invention.

Reference numbers and corresponding part names in the drawings:

1. a box body; 2. a reading window; 3. a test well; 4. a chute; 5. a test pin; 6. a resistance; 7. a voltmeter.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Examples

A protective platen voltage measurement cell, as shown in fig. 1-3, includes a measurement circuit that includes a voltmeter 7, a test connection, and a 25k Ω resistor 6, with the voltmeter 7, the test connection, and the resistor 6 connected in series, as shown in fig. 3.

The protection pressing plate is also called a protection connecting sheet, is a bridge and a link of the protection device which are connected with external wiring, and is related to the function of protection and whether an action outlet can normally play a role. In order to check whether the protection device has misoperation (namely, a contact is closed and does not return) in operation, whether voltage exists at two ends of the pressure plate or not needs to be measured before the protection pressure plate is put into operation, and a common test mode in the prior art is as follows: and directly measuring whether voltage exists between two terminals of the protection pressing plate by using a multimeter. Because the universal meter has a plurality of gears (current gear, resistor 6 gear and voltage gear), if the gear selection of the universal meter is wrong (resistor 6 gear or current gear is selected) in the test process, a tripping loop is directly communicated, so that the switch is tripped, and the phenomenon of switch tripping error or direct current fuse fusing is caused. Based on this, this application provides a protection clamp plate voltage measurement box for whole voltage measurement box only has a measurement gear, does not need the artificial test gear of selecting, avoids selecting wrong gear because of the maloperation and leads to the phenomenon that the switch jumps by mistake or direct current insurance fuses.

Further, in order to facilitate the measurement of the protective press plate, namely: in order to connect the two ends of the protection pressure plate with the test connecting piece, the test connecting piece in the embodiment includes a test hole 3 and a test pin 5 as shown in fig. 1, and the test hole 3 is inserted into the test pin 5. Specifically, when the protection pressing plate is tested, the test pin 5 is firstly electrically connected with the protection pressing plate, then the test pin 5 is inserted into the test hole 3, at the moment, the measurement circuit forms a closed loop through the protection pressing plate, and the measurement of the protection pressing plate is realized by the conduction of the measurement circuit.

Further, in order to facilitate carrying and measurement, the case body 1 is further provided, the voltmeter 7 and the resistor 6 are arranged in the case body 1, the test hole 3 is arranged on the first surface of the case body 1, and the first surface in the embodiment is arranged as the bottom of the case body 1. Simultaneously in order to realize the measurement to the protection clamp plate of unidimensional not, the bottom of box body 1 still is provided with spout 4 in this embodiment, and one of them test hole 3 sets up outside spout 4, and another test hole 3 sets up in spout 4, and the test hole 3 that sets up in spout 4 can slide along spout 4 to adjust the distance between two test holes 3, realize the measurement to the protection clamp plate of unidimensional not.

Further, in order to realize the reading of the voltmeter 7 and prevent dust from entering the measuring box, the second surface of the box body 1 is further provided with the reading window 2 in this embodiment, as shown in fig. 2, the reading window 3 is provided with a transparent cover, and the reading surface (voltage display surface) of the voltmeter 7 faces the reading window 2. Wherein, preferably, the first surface and the second surface are provided as different surfaces of the cartridge body 1. Specifically, in order to facilitate measurement and reading of the protective pressure plate, the second surface in this embodiment is set as the top surface of the case body 1, and the first surface is set as the bottom surface of the case body 1.

Further, for more intuitively reminding the worker, an indicating lamp is further arranged on the box body 1 in the embodiment and is connected in series with the measuring circuit.

When measurement is performed, the test pin 5 is electrically connected to both terminals of the protective pressing plate to measure whether or not there is a voltage between the both terminals. When the circuit is normal, the voltage of the two terminals is 0, the indicator light is not on, the protective contact is not closed, a loop cannot be formed, and a protective pressing plate can be put into the circuit; when the measured voltage is about 220V, the indicator light is on, which indicates that the protection contact is closed, and the protection pressing plate is strictly forbidden.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A protective platen voltage measurement box, characterized by, that includes measuring circuit, measuring circuit includes voltmeter (7), test connecting piece and 25k omega's resistance (6), and voltmeter (7), test connecting piece and resistance (6) are established ties.

2. A protective platen voltage measurement cell according to claim 1, characterized in that the test connection comprises a test hole (3) and a test pin (5), the voltmeter (7), the test hole (3) and the resistor (6) are connected in series, and the test pin (5) is plugged into the test hole (3).

3. A protective platen voltage measurement cell according to claim 2, further comprising a cell body (1), said voltmeter (7) and said resistor (6) being disposed within said cell body (1), said test wells (3) being disposed on a first surface of said cell body (1).

4. A protective platen voltage measurement cell according to claim 3, wherein the test wells (3) are provided in two and one of the test wells (3) is movable in position on the first surface.

5. A protective platen voltage measurement cell according to claim 4, characterized in that the first surface is provided with a slide groove (4), wherein one of the test holes (3) is provided in the slide groove (4) and is slidable along the slide groove (4).

6. A protective platen voltage measurement cell according to claim 3, characterized in that the second surface of the cell body (1) is further provided with a reading window (2), the reading face of the voltmeter (7) facing the reading window (2).

7. A protective platen voltage measurement cell according to claim 6, characterized in that a transparent cover is provided on the reading window (2).

8. The protective pressing plate voltage measuring box according to claim 3, characterized in that an indicator lamp is further arranged on the box body (1), and the indicator lamp is connected in series in the measuring circuit.

9. A protective platen voltage measurement cell according to claim 6, characterized in that the first surface and the second surface are different surfaces of the cell body (1).