CN107346864B - Power supply special for electrical test and use method - Google Patents

Abstract

The invention discloses a special power supply for an electrical test and a use method thereof, wherein the special power supply comprises a cable box, wherein a power box placing bracket is arranged at the upper part of the cable box, a power box is arranged on the power box placing bracket, a cable rotating shaft is arranged at the lower part of the power box placing bracket, and a cable is wound on the cable rotating shaft; the outside of cable box is equipped with the pull rod, and the bottom is equipped with the truckle. The pull rod is arranged at the back of the cable box, so that the cable box is convenient to walk. The side of the cable box is provided with the spool crank, and the spool crank can be retracted when not in use by adopting a folding structure. The side of the spool is provided with a socket which is connected with a power supply. The cable drum adopts the metal structure to guarantee intensity to install the bearing and guarantee rotatory nimble. A certain space is reserved on the upper part of the cable box, so that the power box is convenient to store.

Description

Power supply special for electrical test and use method

Technical Field

The invention relates to the technical field of electric test tools, in particular to a special power supply for an electric test and a using method.

Background

The power box used on site is the tool equipment most commonly used for test and detection work, and the use function can be met by commonly using one power spool and then configuring one power panel. However, the power supply spool and the power supply board which are used in a large amount have the problems of simple design and crude manufacture, and various inconveniences can occur in use. At present, the power supply box has the following problems:

1. the safety is poor: the common power panel is to install original paper such as knife switch, source socket on a wooden bezel, because the component exposes outside in depositing and use, easily damages, and electrified parts such as terminal are exposed easily to take place electric shock danger simultaneously.

2. Poor integrity: the power supply spool and the power supply board are two parts, and the power supply spool and the power supply board are possibly not together stored and transported, so that the problems of belt leakage, no matching and the like occur, and the field use is affected.

3. The power panel is connected with the electric wire shaft and is mostly connected with the binding posts, and the power panel is required to be disassembled and assembled under the condition of no electrification, otherwise, safety hazard is easy to occur.

4. Inconvenient movement: generally, the cable drum is free of casters, and people are required to carry the cable drum when the cable drum moves, and because the cable is heavy, the cable drum consumes very much physical power.

Disclosure of Invention

The invention aims to solve the problems, and provides a special power supply for an electrical test and a use method thereof, wherein the special power supply adopts an integrated structure, and is convenient for using a cable and a power box on site.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the special power supply for the electrical test comprises a cable box, wherein a power box placing bracket is arranged at the upper part of the cable box, a power box is arranged on the power box placing bracket, a cable rotating shaft is arranged at the lower part of the power box placing bracket, and a cable is wound on the cable rotating shaft; the outside of cable box is equipped with the pull rod, and the bottom is equipped with the truckle.

And a power socket is arranged on the outer wall of the cable box and is connected with an internal cable.

The outside of the power socket is provided with a closing door which can be opened and closed.

The cable rotating shaft comprises a spool, a cable is wound on the spool, two ends of the spool are respectively connected with a cable drum, the spool is installed inside the cable box through a bearing, and the spool is connected with a crank arranged outside the cable box.

And two handles are also arranged on the outer wall of the cable box.

The crank is of a foldable structure.

The power box comprises a box body shell, wherein a power panel is arranged inside the box body shell, and a power input interface, an A-phase voltmeter, a B-phase voltmeter, a C-phase voltmeter, a total power knife switch, a total power leakage switch, a three-phase output switch, an A-phase switch, a B-phase switch, a C-phase switch, a three-phase current output interface, an A-phase output socket, a B-phase output socket, a C-phase output socket and a grounding wire column are arranged on the power panel.

The panel is also provided with an input three-phase indicator lamp and an output electrified indicator lamp.

The total power supply leakage switch is an instantaneous interruption and leakage air circuit breaker.

The application method of the special power supply for the electrical test comprises the following steps:

when not in use, the cable is wound on the cable rotating shaft, and the power supply box is placed on the power supply box placing bracket;

when the cable box is used, the whole cable box is transported to the site by the pull rod;

and taking out the power supply box, and connecting the power supply box with a cable in the cable box by using a power supply connecting wire.

The invention has the beneficial effects that:

the power supply box is made of an engineering plastic box with a protective upper cover, so that safety is guaranteed, and good protection is guaranteed during storage. The power box is provided with a knife switch with a visible fracture.

The power box is provided with an input three-phase indicator lamp and is electrified to be visible. The power box is provided with an output electrified indicator lamp. The power supply box is provided with an instantaneous interruption and leakage air circuit breaker and has overcurrent, short circuit and leakage protection functions. The cable shaft adopts box structure, installs the truckle and conveniently removes. The power box is electrically connected with the cable by adopting a plug-in structure, and can be plugged in and out in an electrified mode. The power box can be installed into the cable box when not in use, so that an integrated structure is formed.

The cable box adopts aluminum alloy machine case, and the lower part is installed the truckle, and cable box back installation pull rod is convenient for walk. The side of the cable box is provided with the spool crank, and the spool crank can be retracted when not in use by adopting a folding structure. The side of the spool is provided with a socket which is connected with a power supply. The cable drum adopts the metal structure to guarantee intensity to install the bearing and guarantee rotatory nimble. A certain space is reserved on the upper part of the cable box, so that the power box is convenient to store.

Drawings

FIG. 1 is a rear view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a front view of the present invention;

fig. 4 is a schematic diagram of the power box open.

The cable box comprises a pull rod, a cable box, a cable drum, casters, a power box, a handle, a spool, a crank and a closing door.

Detailed Description

The invention will be further described with reference to the drawings and examples.

1-3, the drawing is a perspective view, a special power supply for electric test comprises a cable box 2, wherein a power box placing bracket is arranged at the upper part of the cable box 2, a power box 5 is arranged on the power box placing bracket, a cable rotating shaft is arranged at the lower part of the power box placing bracket, and a cable is wound on the cable rotating shaft; the outside of cable box is equipped with pull rod 1, and the bottom is equipped with truckle 4.

And a power socket is arranged on the outer wall of the cable box and is connected with an internal cable. The outside of the power socket is provided with a closing door 9 which can be opened and closed. The cable pivot includes spool 7, and the winding has the cable on the spool 7, cable drum 3 is connected respectively at the both ends of spool 7, spool 7 passes through the bearing and installs the inside at the cable box, the spool is connected with the crank 8 that sets up at the cable box outside. Two handles 6 are also arranged on the outer wall of the cable box. The crank is of a foldable structure.

As shown in fig. 4, the power box includes a box housing, a power panel is disposed inside the box housing, and a power input interface, an a-phase voltmeter, a B-phase voltmeter, a C-phase voltmeter, a total power switch, a total power leakage switch, a three-phase output switch, an a-phase switch, a B-phase switch, a C-phase switch, a three-phase current output interface, an a-phase output socket, a B-phase output socket, a C-phase output socket, and a ground terminal are disposed on the power panel. The panel is also provided with an input three-phase indicator lamp and an output electrified indicator lamp.

The total power supply leakage switch is an instantaneous interruption and leakage air circuit breaker.

The application method of the special power supply for the electrical test comprises the following steps:

1. the cable box can be integrally carried when in use, and the cable box is provided with casters which can be conveniently pulled.

2. And folding the pull rod to the destination, and taking out the power supply box.

3. The cable is pulled out of the cable box to a suitable length.

4. And opening a closing door at the outer side of the power socket to expose the power socket.

5. And (3) opening the power box, connecting the power box with the cable box by adopting a special power line, and inputting a three-phase indicator lamp to be lighted if the cable is electrified.

6. The switch of the main power supply knife switch is turned on, the output electrified indicator lamp is on, and then the lamp can be used.

7. After the use, the power supply is cut off, and the connecting wires of the power supply box and the cable box are pulled out.

8. The cable is retracted with a crank.

9. The power supply box is put back into the cable box, the upper cover is covered, and the pull rod is unfolded to be transported back for storage.

Through the test, a plurality of test items such as winding insulation resistance test, winding direct current resistance test, winding dielectric loss factor test and the like related to the main transformer test can all use the power box device. After the power supply box is used, the power supply box is installed into a cable box, the cable is retracted, and the whole power supply box is transported back to be stored.

The special power supply device for the test can normally and stably run, can be used under different test projects, is high in safety and is convenient to move and store.

The special power supply has the characteristics of strong practicability, high safety, convenient movement and storage and the like, and realizes the lean benefit of safe production.

The power box used on site is the most commonly used tool equipment for the test and detection work. Before the special power supply is not developed, a power supply spool is generally used for configuring a power supply board, so that the use function can be met. But the power supply spool and the power strip that use in a large number are designed simply, the preparation is crude, easily damage in depositing and using, and the wholeness is poor, the potential safety hazard is great, and transportation is inconvenient, has a great deal of problem.

After the invention is put into use, the power supply can bear the starting current of the transformer winding deformation test and can be commonly used in different test projects. When the power box is used, the whole power box can be carried, the pull rod is folded after the power box reaches a destination, and the power box can be taken out for use. The cable can be pulled out of the cable box to a proper length when in use, and is retracted by the crank after use. The power box can be arranged in the cable box when not in use, so that an integrated structure is formed, the power box has the characteristics of high safety, convenience in moving and storing and the like, physical consumption of test personnel in carrying and potential safety hazards in use are greatly reduced, and test efficiency is improved.

The tool of the invention can effectively save the time of disconnecting and connecting the power supply, thereby saving the power failure time of the main transformer.

By using the auxiliary device, 380V and 220V can be realized on one panel, all power connection wires can be completed on one panel, and meanwhile, the panel can display voltage in real time, so that the occurrence of instrument burning events caused by misconnection is avoided. The tool is simple, convenient and quick, and saves manpower and materials.

The invention can save power failure time, improve the working efficiency of high-voltage test and improve the safety of test work.

While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.

Claims (7)

1. The special power supply for the electrical test is characterized by comprising a cable box, wherein a power box placing bracket is arranged at the upper part of the cable box, a power box is arranged on the power box placing bracket, a cable rotating shaft is arranged at the lower part of the power box placing bracket, and a cable is wound on the cable rotating shaft; the outer side of the cable box is provided with a pull rod, and the bottom of the cable box is provided with casters; the power supply box can be installed into the cable box when not in use, so that an integrated structure is formed; the outer wall of the cable box is provided with a power socket which is connected with an internal cable; the outside of the power socket is provided with a closing door which can be opened and closed;

the power box comprises a box body shell, wherein a power panel is arranged inside the box body shell, and a power input interface, an A-phase voltmeter, a B-phase voltmeter, a C-phase voltmeter, a total power disconnecting link switch, a total power leakage switch, a three-phase output switch, an A-phase switch, a B-phase switch, a C-phase switch, a three-phase current output interface, an A-phase output socket, a B-phase output socket, a C-phase output socket and a grounding wire column are arranged on the power panel; 380V and 220V can be realized on one panel, all power supply wiring is completed on one panel, and the panel can display voltage in real time.

2. The power supply special for electric test as set forth in claim 1, wherein the cable shaft comprises a spool, a cable is wound on the spool, two ends of the spool are respectively connected with the cable drum, the spool is installed in the cable box through a bearing, and the spool is connected with a crank arranged outside the cable box.

3. The power supply special for electric test as recited in claim 1, wherein two handles are further arranged on the outer wall of the cable box.

4. A power supply special for electric test as set forth in claim 2, wherein said crank is of a foldable construction.

5. The power supply special for electric test as recited in claim 1, wherein the panel is further provided with an input three-phase indicator light and an output live indicator light.

6. The electrical test specific power supply as recited in claim 1, wherein said total power supply leakage switch is a momentary disconnect and leakage air circuit breaker.

7. The method for using a power supply special for electric test as set forth in claim 1, comprising:

when not in use, the cable is wound on the cable rotating shaft, and the power supply box is placed on the power supply box placing bracket;

when the cable box is used, the whole cable box is transported to the site by the pull rod;

and taking out the power supply box, and connecting the power supply box with a cable in the cable box by using a power supply connecting wire.