KR100762756B1 - Variable Current Transformer System Of The Relay. - Google Patents

Abstract

A variable current transformer system of a relay is provided to improve workability in the field by promptly changing the position of current transformer. A variable current transformer system of a relay includes a name plate(2), a terminal(3), through holes(5), a current transformer(4) and a PCB(Printed Circuit Board). The name plate(2) and the terminal(3) are installed at the upper side of the relay. The through holes(5) are formed at the current transformer(4) and a body case(1) respectively. The PCB and the current transformer(4) are installed inside a body case(1), and are electrically connected to each other by a cable and a socket. Protrusions formed at both sides of the current transformer(4) moves along grooves formed at both sides of the body case(1) so that the position of the current transformer(4) is changed.

Description

Current Sensor Inverter of Relay {Variable Current Transformer System Of The Relay.}

1 is a perspective view of a relay for explaining the present invention.

2 is a diagram illustrating main parts.

FIG. 3 is an enlarged explanatory view of a circle A portion in FIG. 2; FIG.

Figure 4 (a) (b) (c) (d) is an explanatory view of the position change of the current transformer.

5 is an electrical connection diagram of a current sensor and a PCB.

6 is an explanatory diagram of installation of a single phase or three phase (R.S.T line).

***** Description of the symbols in the drawings *****

1 is the body case of the relay, 2 is the nameplate, 3 is the terminal for connection to the external line, 4 is the current transformer with current sensor, 5 5 'is through hole, 6 is groove, 7 is protrusion, 8 is cable, 9 is PCB , 10 is a socket, 11, 12, 13 is a single-phase or three-phase power line.

The present invention relates to an apparatus for converting a current sensor of a relay, and in particular, when installing the relay on a switchboard, the current transformer (CT: Curent Transformer), which is a current sensor of the relay, must be arranged in a horizontal position or a vertical position according to a place and a position. It is necessary to select a suitable relay for this, but in order to solve such a hassle, the position of the current transformer installed in the relay immediately in the field can be used to modify according to circumstances.

In a conventional relay, a current transformer (hereinafter, referred to as a "current transformer") as a current sensor is projected horizontally at a predetermined position, that is, on the front or side of the body case of the relay, or vertically protrudes above the name plate of the current transformer body case, or Since it is supplied in a structure fixed to penetrate the body, it is troublesome to select a relay according to the position and design to be used.

The present invention is to propose to be able to change the position of the current transformer (CT) on the fly according to the conditions of the workplace to solve the trouble and inconvenience as described above.

To this end, the present invention is to achieve the object by configuring the current transformer to be rotated at a 90 ° angle in the trunk case of the relay in order to be able to use the current transformer vertically or horizontally according to the circumstances of the site.

Hereinafter, the present invention will be described in detail with reference to the accompanying embodiments.

1 is a perspective view of an exemplary embodiment for explaining the present invention, a name plate (2) is installed above the trunk case (1) of the relay, and terminals (3) and various signal lamps for connection with a plurality of external devices are arranged, and a current transformer (4). ) And the body case (1), respectively, through holes (5) and (5 ') is installed because it is the same as the description thereof will be omitted.

However, in the present invention, both sides of the relay as shown in the circle (A) of Fig. 2 of the current transformer 4 so that the current transformer 4 can be rotated by 90 ° angle along the "c" shaped groove (6) Projections 7 protrude from both sides. Such protrusions are not shown on both sides of the current transformer (4) through the "c" shaped groove (6) in the side of the body (1) when assembling the body case (1) and the current transformer (4) of the relay ( Of course, the projection 7 may be installed by inserting and fixing the same or by inserting and fixing the screw.

Therefore, FIG. 3 illustrates the positions of the projections 7 protruding on both sides of the current transformer 4 as the current transformers change angles along the grooves 6 as (a), (b), (d). . Accordingly, the position of the current transformer 4 also changes as the protrusions 7 provided on both sides of the current transformer 4 change positions along the grooves 6. That is, from the process of pulling the current transformer 4 in a vertically fitted state as shown in FIG. 4 (a) slightly forward as shown in FIG. 4 (b), the current transformer 4 can be rotated as shown in FIG. When the 90 ° rotation is completed and the current transformer 4 is pushed toward the body case 1, the current transformer 4 can be fixed in a horizontal state as shown in FIG. In addition, although two through holes 5 and 5 'are respectively shown in the current transformer 4 and the body case 1, one or three through holes may be drilled as necessary.

FIG. 5 shows the electrical connection between the current transformer 4 and the PCB (printed circuit board) installed in the body case 1 through the cable 8 and the socket 10.

In this case, if the current transformer 4 is positioned vertically as shown in Fig. 4A, the current transformer 4 as shown in Fig. 6C is used. Through the through hole (5) and the through hole (5 ') through the through hole (5) through the wire connected between the power supply side and the load side (not shown), it is possible to detect the change in current flowing in the wire In case that the current transformer 4 is to be used in a horizontal state as shown in (D) of FIG. 4, the power line may be connected to a single phase as shown in (A) of FIG. 6 or to a three phase (RST) such as (B). The outside of the body or through the through hole (5 ') of the body case (1) is to detect the change in the current.

Therefore, in order to return to the original state as shown in FIG. 4A in the state as shown in FIG. 4D, the "c" shaped groove 6 with the projection 7 installed on the side of the current transformer 4 as the above-described inverse order You can get back through.

It will be apparent to those skilled in the art that the present invention is not limited to the above embodiments and can be variously modified or changed without departing from the spirit and scope of the present invention. However, such modifications or changes are of course within the scope of the technical rights of the present invention.

As described above, according to the present invention, the position of the current transformer, which is the current sensor of the relay, can be changed and used immediately according to the conditions of the work site, thereby eliminating the trouble of selecting and using the relay according to circumstances. In addition to improving work efficiency in the field, the structure is simple and industrially useful invention.

Claims (1)

In the relay, the name plate (2) and the terminal (3) is provided on the upper side of the relay, and the through holes (5) and (5 ') are formed in the current transformer and the body case (1), respectively. It is electrically connected by a cable (8) and a socket (9) between the PCB (9) and the current transformer (4) installed in the body case (1) of the relay, The projections 7 are projected on both sides of the current transformer 4 so that the current transformer 4 moves to the 90 ° angle along the "c" shaped grooves 6 arranged on both sides of the trunk case 1 of the relay. The current sensor inverter of the relay, characterized in that the movement.

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