JPS5999366A - Tester for through type current transformer - Google Patents

Abstract

PURPOSE:To improve the working efficiency and the safety required for connection of a conductor with a simple treatment by providing a conductor on a crane hanging therefrom in such a manner as to be insertable into and removable from a current transformer and movable connected to a driver together with a mobile terminal and a power source connected through a connection conductor beforehand. CONSTITUTION:A current transformer 13 placed on a pallet 14 is moved right under a conductor 17 hanging from a crane 16 with conveyor 11 and then, the conductor 17 is lowered to get the lower end thereof inserted between a fixed terminal 18 and a mobile terminal 19. Then, the mobile terminal 19 is moved to the side of the fixed terminal 18 with a driver 21 such as jack and the tip of the conductor 17 is pressed on the fixed terminal 18 and the mobile terminal 19. With such an arrangement, as a flexible connection conductor 23 is connected to the upper end of the conductor 17 beforehand, an energization circuit is formed between a power source 22 and the conductor 17. When a primary current is fed from the power source 22 via the connection conductor 23, the conductor 17, the fixed terminal 18 and the connection conductor 20, a testing of the current transformer 13 can be done.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a test device for a feedthrough current transformer with a large current rating and a test device for a feedthrough current transformer that can easily set a primary conductor in a set position.

[Technical background of the invention and its problems]

To test a through-type current transformer, which is a conventional test device, as shown in Figure 1, a conductor 1 with a part open and a loop bent in a row is passed through the current transformer 2 to conduct the primary test. A circuit is formed, and power terminals 4 led out from a power source 3 are connected to both open ends of the conductor 1.
are connected by a girdle 5 to form an energizing circuit for passing a primary current through the conductor 1.

However, with this method of passing conductor 1 through current transformer 2 and connecting conductor 1 to power supply 3 every time a feed-through current transformer is tested, it is difficult to test a current transformer with a large current rating. Since the weight of the conductor 1 forming the primary circuit is large, it is difficult to handle it, and it is difficult to set the conductor 1 at a set position with respect to the current transformer 2. It is also necessary to make the connection between the conductor 1 and the power supply terminal 4 strong, but it takes a lot of effort to tighten the bolts. Furthermore, if the current transformer is heavy, a crane or the like is required to move it, and there is a problem in that it takes time to relocate it for testing.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to simplify and facilitate the handling of the feedthrough current transformer and its primary conductor, as well as to improve the work efficiency and efficiency required for connecting the conductors. An object of the present invention is to provide a test device for a feedthrough current transformer that can significantly improve safety.

[Summary of the invention]

In order to achieve such an objective, the present invention provides a conveyor capable of carrying a current transformer to be tested and transporting it to a predetermined position, and also installs a crane on one side of the conveyor, and installs a crane on one side of the conveyor to allow the current transformer to be inserted into the conductor. The lower end of the conductor is connected to a drive device consisting of a conductive fixed terminal and an insulating movable terminal that connects and separates from the fixed terminal so that the lower end of the conductor can be clamped under the conveyor. The fixed terminal is movably provided, and a power source is connected in advance to the fixed terminal and the upper end of the conductor via a connecting conductor.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Second
The figure shows an example of the configuration of a testing device for a 'N communication type flow vessel according to the present invention. In FIG. 2, reference numeral 11 is a conveyor movably provided on a support stand 12, and a current transformer 13 serving as a test device is placed on the conveyor 1.
4 are provided via rollers 15. Reference numeral 16 denotes a crane installed on one side of the conveyor 1. This crane 16 includes a support 16a, a movable arm 16b extending above the conveyor 11 provided at the upper end of the support 16m, and a tip of the movable arm 16b. Hook part 16C held between the parts
The conductor 17 is inserted into and removed from the current transformer 13 by lowering and raising the conductor 11 suspended from the hook portion 16c. On the other hand, 18 and 19 are conductive fixed terminals and insulating movable terminals that are provided on the floor directly below the conveyor 1 so that the lower end of the conductor 17 is clamped. The conductor 20 is connected to the movable terminal 19; and the second is connected to a drive shaft 21B of a drive device 21 such as a jack, so that the movable terminal 19 can move toward and away from the fixed terminal 18. Further, 22 is a power source, and one output terminal 22a of this power source 22 is connected to a connecting conductor 20 connected to the fixed terminal 18.
A flexible connecting conductor 23 connected to the upper end of the conductor 17 is connected to the other output terminal 22a of the conductor 17, so that a current-carrying circuit is formed.

Next, we will explain the operation when actually testing the current transformer 13 in the through-type current transformer testing device configured as described above.
Y'C states. First, the conductor 11 is
Current transformer 1 placed on e-let 14 in a lowered state
3 so that it is directly below the conductor 17 from the conveyor's 1st height.
After being moved, the conductor 17 is lowered and its lower end is inserted between the fixed terminal 18 and the movable terminal 19. Next, the movable terminal 19 is moved to the fixed terminal 18 by a drive device 2 such as a jack.
The tip of the conductor 17 is pressed against the fixed terminal 18 and the movable terminal 19 by moving it to the side.

In this way, since the flexible connecting conductor 23 is connected in advance to the upper end of the conductor 17, a current-carrying circuit is formed between the power source 22 and the conductor 17. Therefore, from the power source 22, the connecting conductor 23, the conductor 11, the fixed terminal 18, and the connecting conductor 2
The current transformer 13 can be tested by passing the primary current through 0. After the test, the movable terminal 19 is moved back by the drive device 21, and the conductor 1 is moved back by the crane 16.
7 is raised to move the current transformer 13, which is the device under test, to a predetermined position.

In this embodiment, the current transformer 13 serving as the test device is placed on the conveyor 11 and moved to a predetermined position, and the conductor 11 forming the primary circuit is moved by the crane 16 installed on one side of the conveyor 11. The conductor 11 can be lowered to pass through the hollow part of the current transformer 13 and set at the set position, so even if the conductor 17 is heavy, such as in a current transformer with a large current rating, It becomes easy to handle, and the current transformer 13 itself can be easily moved or rearranged in a short time. Further, the connection between the conductor 17 and the power source 22 is a flexible one connected to one output end of the power source 22. The connecting conductor 23 having Il− is connected in advance to the upper end of the conductor 21, and during the test, the lower end of the conductor 12 is connected to the running terminal 18 connected to the other output end of the power source 22 and a driving device such as a jack. Movable terminal 19 that moves forward and backward by 21
Since a current-carrying circuit is formed simply by pressing the conductor 17 and the conductor #22 together, the connection between the conductor 17 and the conductor #22 can be easily mechanized, and the work efficiency and safety can be greatly improved. can. As a result, mass production testing of heavy, high-current current transformers can be dramatically improved.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without changing the gist thereof.

〔Effect of the invention〕

As described above, according to the present invention, it becomes easy and simple to handle the through-current transformer and its primary conductor as the device under test, and the work efficiency and safety required for connecting the conductor are improved. A through-current current transformer testing device that can significantly equate to the above? Can be provided.

[Brief explanation of the drawing]

Figure 1 is a conventional layout and configuration diagram for testing a through-type current transformer, and Figure 2 is a layout and configuration diagram showing an example of a testing device for a through-type current transformer according to the present invention. Yes. 11... Conveyor, 13... - Through-hole type flow device, 16...
...Crane, 17...Conductor, 18...Fixed terminal,
19...Movable terminal, 21...Drive device, 22...
Power supply, 20.23... connection conductor. Applicant's agent Patent attorney Hiko Rin Ushiki

Claims (1)

[Claims] A conveyor that can carry a through-type current transformer as a test device and move it to a predetermined position, and a conductor installed on one side of this conveyor to lower the conductor and cause the current transformer to become narrow due to its lowering and rising. a conductive fixed terminal and an insulating movable terminal provided below the conveyor so that the lower end of the conductor is clamped; a drive device that moves forward and backward with respect to a fixed terminal to press-contact or separate the lower end of the conductor; one output end is connected to the fixed terminal via a connecting conductor, and the other output end is connected to the upper end of the conductor; Test equipment for feed-through current transformers, consisting of a power supply connected through a conductor.