JPH0448536Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to an energizing device for testing three-phase equipment. More specifically, by passing current between the terminals of each phase of three-phase equipment, the resistance between the terminals can be reduced. The present invention relates to an energizing device for three-phase equipment inspection for measuring.

<Prior art> Conventionally, in order to measure the main circuits of high-voltage three-phase circuit breakers, switches, etc., as shown in FIG. Using the clip 22 and the second clip 23, by passing a test current through the first clip 22 and connecting the second clip 23 to the measuring device 24, the voltage between both terminals of each phase in the energized state can be measured. Voltage drop measuring device 24
The main circuit resistance is measured by measuring.

<Problems to be solved by the invention> According to the above-mentioned conventional measurement method for the main circuit, it is necessary to turn on and off the current for each phase and to change the connection of the clips 22 and 23 every time a measurement is carried out. As a result, there are problems in that work efficiency is poor and there is a lot of lost time.

In addition, when performing the above measurements at a predetermined position on the conveyor line, the measurement wiring will get in the way of work in the next process, so each time the measurement of one three-phase device is completed, the measurement wiring need to be cleared up, and the above-mentioned problems will become especially noticeable.

<Purpose of the invention> This invention was made in view of the above-mentioned problems, and the object is to provide an energizing device for three-phase equipment inspection that can improve work efficiency and significantly reduce loss time. It is an object.

<Means for Solving the Problems> In order to achieve the above object, the three-phase equipment inspection energizing device of this invention has a pair of frames suspended by an upward biasing means, at a predetermined position, Each pair of conductive members is insulated from each other, and one of each pair of conductive members is a long conductive member that can be contacted with terminals for two phases of a three-phase device, and the other is a long conductive member that can be contacted with terminals for two phases of a three-phase device. It is a short conductive member that can be contacted with the phase terminal, and the short conductive member of each frame is connected to the power source, and the arrangement of the pair of conductive members in each frame is reversed. It is characterized by:

However, each conductive member may be attached to the frame with a cushion member interposed therebetween.

<Function> With the energizing device for three-phase equipment inspection having the above configuration, the pair of frames is pulled down against the urging force of the upward urging means, and the pair of conductive members of each frame are connected to each of the three-phase equipment. By matching the terminals on the side, a biasing force acts to press the conductive member and the terminal to establish an electrical connection, and by applying voltage between the short conductive members using the power supply, three-phase equipment A circuit is constructed by connecting two main circuits in series, and the main circuits for three phases can be energized. Further, if the frame is moved outward from the terminal and then released, the frame is moved upward by the upward biasing means.

However, if the conductive member is attached with a cushion interposed, errors in the vertical positions of the three-phase terminals can be absorbed and a reliable electrical connection can be achieved. In addition, if the measurement lead wire is drawn out from the part of each conductive member that comes into contact with the terminal of the three-phase device, there is no need to perform a special operation to connect the measuring device to the terminal.
Main circuit resistance can be measured.

<Examples> Hereinafter, examples will be described in detail with reference to the accompanying drawings showing examples.

FIG. 2 is a perspective view showing the energizing device for three-phase equipment inspection, in which a frame 3,
The insulators 4, 4' are attached to the predetermined positions of the insulators 4, 4', and the plate-shaped cushion members 5a,
Conductive members 6a, 6b, 6a', 6b' made of knitted wire or the like are attached via 5b, 5a', 5b'.
The conductive members 6a and 6b' are connected to one of the three-phase equipment 7.
The conductive members 6b, 6a' are in contact with only the terminals of
to make contact with the remaining two terminals of the three-phase equipment 7,
The conductive members 6a and 6b are arranged in opposite directions, and the conductive members 6a' and 6b' are arranged in opposite directions.
a and 6b' are connected to a power source (not shown).

In addition, the insulators 4, 4', the cushion member 5
a, 5b, 5a', 5b' and conductive members 6a, 6
Contacts 8a, 8b, 8c, 8a', 8b', 8c' for resistance measurement are installed through the contactors 8a, 8b, 8c, 8a', 8b'. ，
Lead wires 9a, 9b, 9c, 9 connected to 8c'
terminals 7a, 7a', 7b of each phase of the three-phase equipment 7,
Pair the lead wires corresponding to 7b', 7c, and 7c'
It is selectively connected to a measuring instrument 11 such as a mV meter.

The mounting structure of the contactor 8a will be described in detail with reference to FIG. 3. The contactor 8a has a wide flange formed at the upper end of a rod-shaped member, and the wide flange is in contact with the conductive member 6a. The conductive member 6a, the cushion member 5a, and the insulator 4a are penetrated through the conductive member 6a, the cushion member 5a, and the insulator 4a, and by attaching a stop ring to the protrusion, it is attached like a plate. Note that the configurations of the other contacts are also the same, so their explanations will be omitted.

Figure 1 shows the state in which the main circuit resistance of each phase of the three-phase equipment 7 is measured.The frames 3, 3' are pulled down against the upward biasing force of the spring-type hoisting devices 1, 1', and the conductive Connect the members 6a, 6b, 6a', 6b' to each terminal 7a, 7b, 7c, 7a', 7 of the three-phase equipment 7.
When the pulling force is released, i.e., the hand is released, while the conductive member is moved horizontally to a position slightly below b', 7c', the conductive member is 6a, 6b, 6a', 6b' are the terminals 7a, 7b, 7c, respectively of the three-phase equipment 7.
It can be brought into pressure contact with 7a', 7b', and 7c'. In this case, the conductive members 6a, 6b, 6a', 6
Since b' is made of knitted wire, has flexibility, and is supported by cushion members 5a, 5b, 5a', 5b', each terminal 7a, 7
Even if there are some errors in the vertical positions of b, 7c, 7a', 7b', and 7c', a reliable electrical connection can be achieved.

Therefore, in this state, the conductive members 6a,
If a voltage is applied between 6b' and 6b', conductive member 6a-terminal 7a, 7a'-conductive member 6a'-terminal 7b', 7b-
A current flows through the path from the conductive member 6a to the terminals 7c and 7c' to the conductive member 6b'. Since a voltage drop corresponding to each main circuit resistance occurs between the contacts 8a and 8a', between the contacts 8b and 8b', and between the contacts 8c and 8c', the changeover switch 10,
By sequentially connecting the measuring device 11 through 10', it is possible to sequentially measure the main circuit resistance of each phase.

Also, after completing the measurement, frame 3, 3'
All you have to do is pull down the frame a little, move it horizontally, and then release your hand.As shown in Figure 2, the frame 3,
3' is automatically pulled up, so there is no need to specially clean up the measurement wiring.

As is clear from the above explanation, frame 3,
3', move horizontally, operate the switch, and finally pull down frames 3 and 3'.
Since only horizontal movement is required, the main circuit resistance of each phase can be easily measured even when the three-phase equipment 7 is sequentially moved along the conveyor line.

<Effects of the invention> As described above, this invention has the unique practical advantage of being able to energize each phase of a three-phase device at once, and omitting the trouble of switching energization for each phase. It has the desired effect.

In addition, if the conductive members are installed with a cushion member interposed between them, a reliable electrical connection to each terminal can be achieved. When the measurement lead wire is drawn out from the position, connection to the measuring device can be easily made by simply operating a switch.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the state in which the main circuits of each phase of a three-phase device are energized, Figure 2 is a perspective view showing an example of an energizing device for testing three-phase equipment, and Figure 3 is an enlarged longitudinal section of the main part. FIG. 4 is a perspective view showing a conventional example. 1... Spring type hoisting device as upward biasing means, 3, 3'... Frame, 5a, 5b, 5a',
5b'...Cushion member, 6a, 6b, 6a', 6
b'... Conductive member, 9a, 9b, 9c, 9a', 9
b', 9c'...Lead wire.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of frames, each insulated from each other, placed at a predetermined position on a pair of frames suspended by an upward biasing means.
It has a pair of conductive members, one of each pair of conductive members is a long conductive member that can be contacted with the terminals for two phases of a three-phase device, and the other is capable of contacting the terminal of the remaining one phase. A three-phase device characterized in that the short conductive members of each frame are connected to a power source, and the arrangement of the pair of conductive members in each frame is reversed. Energizing device for equipment inspection. 2. The energizing device for three-phase equipment inspection according to claim 1, wherein each conductive member is attached to the frame with a cushion member interposed therebetween. 3. The energizing device for three-phase equipment inspection according to claim 1 of the above-mentioned utility model registration claim, wherein a measurement lead wire is drawn out from a position of each conductive member that comes into contact with a terminal of the three-phase equipment.