JPS5935333A - Relay containing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a relay storage device, and more particularly to a relay storage device that is housed in a detector element storage box for an auxiliary PCT element.

Conventional relay storage devices store system voltage and current in power PT,
Auxiliary PCT elements input via CT.

This kind of relay is a relay that integrates a detection element consisting of an electronic circuit that detects and outputs an abnormality in the system based on the AC input, and an internal connection terminal that connects these inside and outside. It is housed in a storage box equipped with external connection terminals on the input/output side for connecting internal elements and external circuits. This storage device is equipped with a see-through window in the glass cover that can be attached to and removed from the storage box, but when electromagnetic waves are emitted, they pass through the see-through window in the glass cover and directly reach the detection element, which consists of the electronic circuitry inside the relay. Due to the nature or strength of the electromagnetic waves, malfunctions may occur in electronic circuits, or high-frequency currents caused by electromagnetic waves may enter the electronic circuits via external wiring, causing malfunctions in the electronic circuits.

The present invention has been made in view of the above points, and an object thereof is to provide a relay storage device that prevents the influence of electromagnetic waves on electronic circuits.

That is, in the present invention, a storage box is constructed of a detection chamber and a PCT chamber, which are shielded from the C ground potential through a shield and a mounting plate, the detection component is housed in the detection chamber, and the auxiliary 1) is housed in the PCT chamber.
This device is characterized in that the CT element is housed, and the inlet/output cable of the detector element is installed on the inner wall of the detector chamber and closely passed through the duct which is set at ground potential.

The present invention will be explained below based on the illustrated embodiments. An embodiment of the present invention is shown in FIGS. 1-4.

In the figure, 11 is an auxiliary PCT element, 2 is a detection element,
3 is a storage box, 4 is a shelf, 5 is a PCT chamber, 6 is a detection chamber, 7 is an input end external connection terminal, 8 is an output side external connection terminal, 9 is an internal connection terminal, 10a, 10b are cable holes ,l
la is an input cable, 11b is an output cable, 12 is a duct, 13 is a front panel, 14 is a connector, and 15 is a glass cover. In this embodiment, the storage box 3 is
It consists of a detection chamber 6 and a PCT chamber 5, which are shielded from earth potential through a The input/output cables lla and llb of the section element 2 are installed on the inner wall of the detection section chamber 6 so as to closely pass through the inside of the duct 12 which is set at ground potential. By doing so, electromagnetic waves do not enter into the extraction chamber 6, and it is possible to obtain a relay storage device that prevents the influence of electromagnetic waves on electronic circuits.

That is, the storage box 3 is divided into a detection section chamber 6 and a PCT chamber 5 via the support plate 4, and the detection section element 2 is placed inside the detection section chamber 6.
The auxiliary PCT element 1 is housed in the PCT chamber 5. Cable holes 10a, 101) for the output cables lla, llb of the detector element 20 are provided in the detector chamber 6, and between the detector element 2 and the auxiliary PCT element 1 and between the detector element 2 and the output side external Between the connection terminal 8 and the input/output cable 11a, pass through the cable holes 10a and 10b, respectively.
, llb are interconnected, for example, by flat cables.

In this case, the cable hole 10 of each cable lla, llb
a, 10b, the long part that is inside the detection chamber 6,
A duct 12 provided on the inner wall of the detection chamber 6 holds the cables lla and 11b so that they fit between them and are in close contact with each other.
and close the cable holes 10a and 10b into the detection chamber 6. Therefore, the duct 12 has an input/output cable 11a,
A shallow groove corresponding to the thickness and width of llb may be used. The opening of the storage box 3 is provided with a front panel 13 that has functions such as displaying and setting the relay, and that rotates to open and close. and the front panel 13 are in perpendicular contact with each other, and the detection chamber 6 is shielded from other auxiliary PCT elements 1 and the outside.

In this way, the input/output cable 11a of the detection element 2.

11b is arranged in close contact with the inside of the duct 12, and the storage box 3, the shield plate 4, the duct 12, and the front panel 13 are all made of conductive metal material to earth potential. The club room 6 was a box whose entire surface was closed at ground potential. By doing this, even if electromagnetic waves are radiated to the relay and enter the inside of the relay, the detection element 2 is shielded by the box that is the detection chamber 6 at ground potential, so the high frequency current is grounded. The potential flows through the box, causing input and output chips.
The high-frequency current that attempts to enter the detection element 2 through the pulls lla and llb flows into the box body at earth potential due to the condenser effect of the wiring section of the duct 12 at earth potential, thereby reducing the influence of electromagnetic waves from the electronic circuit. Can be electrically shielded.

Note that the input/output cables lla and llb connecting the detection unit element 2, auxiliary 1) CT element 1, etc. are each element J-.

The Urasuke P CT element 1 and the detection element 2 are connected by the connector 14 provided on the 2, and the front panel 13 is opened and each element 1
．． It can be pulled out by opening the connector 14 of No. 2.

As described above, in the present invention, the storage box that houses the electronic circuit is shielded from electromagnetic waves, so the electronic circuit is shielded and prevented from entering by electromagnetic waves, and the electronic circuit is protected from the influence of electromagnetic waves. Therefore, it is possible to obtain a relay housing device that prevents the influence of electromagnetic waves on electronic circuits. .

[Brief explanation of the drawing]

1 is a top sectional view of one embodiment of the relay storage device of the present invention, FIG. 2 is a partially cutaway front view of the same embodiment, and FIG. 3 is a duct surrounding the output cable side on the left side of FIG. 1. Perspective view of
FIG. 4 is a perspective view of the area around the input cable side duct on the right side of FIG. 1. 1... Auxiliary PCT element, 2... Detector element, 3...
・Storage box, 4...Shiya mounting board, 5...PCT room, 6.
...Detection chamber, 11a...Input cable, 11b...
・12... duct to the output cape. Agent Patent Attorney Akio Takahashi Kaya 10 Plan 20

Claims (1)

[Claims] 1. Auxiliary I) In a relay storage device in which relay internal elements including a CT element and a detection part element are housed in a storage box, the storage box is connected to a detection part chamber and shielded from earth potential via a shield and a mounting plate. The detector element is housed in the detector chamber, and the auxiliary PCT element is housed in the PCT chamber.
1. A relay storage device which houses a CT element and has an inlet/output cable for the detector element installed on an inner wall of the detector chamber so as to closely communicate with the inside of a duct which is set at ground potential.