JPH04130611A - Through-type current transformer - Google Patents

Abstract

PURPOSE:To make short the lengths of through windings and to make short an installation area fro terminal bases by a method wherein the mounting stand of a circuit transformer is provided with the terminal bases. CONSTITUTION:A through-type current transformer 3 is fixed on a mounting stand 5 bent into a U-shaped form. Two pieces of terminal bases 2 are each mounted on both side surfaces of the stand 5, that is, on the surfaces, which are located in the direction perpendicular to through holes 6 in the current transformer 3, of the stage 5. Through windings 4 are made to penetrate the holes 6 in the current transformer by the amount of the number of windings to correspond to the need and thereafter, are connected to the bases 2. Thereby, as the bases 2 can be provided in the vicinity of the current transformer 3,. the windings 4 can be made short. Moreover, as there is no need to provide a space for independent terminal base use within a board, a reduction in the size of the board becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a through-type current transformer incorporated into a power distribution panel, a control panel, etc.

[Conventional technology]

FIG. 5 is a structural diagram showing a combination of a conventional feedthrough current transformer and a terminal block, and FIG. 6 is a side view thereof. Conventionally, as shown in Fig. 5, a through-type current transformer 3 and a terminal block 2 that connects a through-hole winding 4 are arranged and wired in a plane on a base plate l, or alternatively, the installation space for the terminal block is If there was no terminal block, the through-winding of the current transformer was wired directly to the equipment without a terminal block.

/ [Problem to be solved by the invention] In the conventional method, the feedthrough current transformer and the terminal block that connects the feedthrough winding are arranged flat on the plywood, so it is necessary to take up a large area for installation. Ta. In addition, when wiring the current transformer through-winding directly to the IQ device without installing a terminal block, assemble a long through-winding of the current transformer to match the position of the connected device. In particular, when the number of turns of the through-hole winding is increased to two or three, there is a problem in that wiring of the through-hole winding requires a great deal of effort.

Therefore, the purpose of this invention is that it can be installed with a small installation area, and can be installed through the entire body! - It is an object of the present invention to provide a structure of a feed-through current transformer with easy wiring.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a current transformer mounting base with a terminal block for connecting the through-hole winding, and furthermore, in such a configuration, the terminal block is connected to the through-hole of the current transformer. Install on a vertical surface. Furthermore, the case that houses the coil of the current transformer and the terminal block that connects the through-hole winding are integrally molded from an insulating material.

[Function] According to the present invention, since the terminal block is provided on the current transformer mounting base, the terminal block is provided near the current transformer, and the length of the through-hole winding can be shortened. Wiring becomes easier.

In addition, since the terminal block is installed on a surface perpendicular to the current transformer's through hole, the installation area of the terminal block is small.Furthermore, since the current transformer side case and the terminal block are integrally molded, the entire device Be compact.

(Embodiment) FIG. 1 is a front view showing the structure of a feedthrough current transformer according to a first embodiment of the present invention, and FIG. 2 is a side view thereof.

In FIGS. 1 and 2, the through-type current transformer 3 is fixed on a mounting base 5 bent in a U-shape. Terminal block 2
Two of them are mounted on both sides of the mounting base 5, that is, in a direction perpendicular to the through hole 6 of the current transformer 3. The through-hole winding 4 is connected to the terminal block 2 after passing through the through-hole 6 of the current transformer with a number of turns as required.

FIG. 3 is a front view showing the structure of a feedthrough current transformer according to a second embodiment of the present invention, and FIG. 4 is a side view thereof.

In FIGS. 3 and 4, the case 7 of the current transformer is made of an insulating material, and its lower part serves as the base of the terminal block. A wire connection fitting 8 and a terminal screw 9 are provided on this base portion to form a terminal block, and the through-hole winding 4 is connected to this terminal block.

〔Effect of the invention〕

In both the first and second embodiments, the terminal block can be installed near the feed-through current transformer, so the feed-through winding can be shortened, and even if the feed-through winding has a large number of turns, the wiring can be shortened. becomes easier. In addition, since there is no need to provide a space for an independent terminal block in the panel, Fig. 1 is a front view showing the first embodiment of the feedthrough current transformer of the present invention, Fig. 2 is a side view thereof, and Fig. 3 The figure is a front view showing the second embodiment, and FIG. 4 is a side view thereof.

FIG. 5 is a structural diagram showing a combination of a conventional feedthrough current transformer and a terminal block, and FIG. 6 is a side view thereof.

2...Terminal block, 3...Through current transformer, 4...Through winding, 5...Mounting base, 6...Through hole, 7...Case, 8...Wire Connection fittings, 9...terminal screws.

υ No. Misfortune No. figure hand figure

Claims (1)

[Scope of Claims] 1) A through-type current transformer characterized in that a terminal block for connecting a through-hole winding is provided on a current transformer mounting base. 2) A through-type current transformer according to claim 1, wherein the terminal block is provided in a plane perpendicular to the through hole of the current transformer. 3) A through-type current transformer according to claim 1 or 2, characterized in that the case for housing the coil of the current transformer and the terminal block for connecting the through-hole winding are integrally molded from an insulating material.