JP2006164664A - Amplification support contact unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an amplification support contact unit capable of being mounted to an existing auxiliary relay mounting plate when the operation status of an auxiliary relay in a switchboard must be monitored, and thereby to obviate the need to install an additional auxiliary relay in a separate place. <P>SOLUTION: This amplification support contact unit is provided with: an existing auxiliary relay where a normally-closed moving contact operates simultaneously with a normally-opened moving contact; and an adapter base with a first transistor and a second transistor mounted thereon; is so structured that the first transistor is turned on in the on-state of the normally-closed moving contact to provide a level "H" output; the second transistor is turned off in the off-state of the normally-opened moving contact to provide a level "L" output; the first transistor is turned off in the off-state of the normally-closed moving contact to provide a level "L" output; and the second transistor is turned on in the on-state of the normally-opened moving contact to provide a level "H" output; and is characterized by mounting the adapter base and the existing auxiliary relay on the existing auxiliary relay mounting plate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an auxiliary relay installed on a switchboard, and when an additional relay contact is required, it is equivalent to an auxiliary auxiliary contact that is inserted into an existing auxiliary relay mounting plate and has an additional relay contact of the same function. It is about the unit.

  A lot of control relays called auxiliary relays such as devices and drive mechanisms are installed in the switchboards installed at substations and power receiving and receiving stations. When you want to check the operating status of the devices and drive mechanisms, etc. As an alternative, the operation of the auxiliary relay is monitored. The latest type of switchboard has a specification with this kind of function, but the old model did not have this function.

  When it is desired to monitor the operation status of each auxiliary relay with respect to the existing old distribution board, it is necessary to obtain an on / off signal synchronized with the operation of each auxiliary relay. For this reason, a method has been adopted in which auxiliary relays each having the same function are added using the empty space in the switchboard, and are electrically connected to each other to obtain the same on / off signal. Then, these signals are taken into a personal computer and subjected to predetermined signal processing for monitoring.

  However, with this method, it is necessary to secure an expansion place and to examine the installation layout of the auxiliary relay for expansion, and there has been a problem that remodeling of the switchboard becomes a large scale.

  The present invention has been made in view of the above problems, and provides an amplification auxiliary contact unit that can be mounted on an existing auxiliary relay mounting plate together with the existing auxiliary relay when it becomes necessary to monitor the operation status of the auxiliary relay in the switchboard. However, it is intended to eliminate the need to install an additional auxiliary relay at another location.

  An amplification auxiliary contact unit according to the present invention includes an existing auxiliary relay in which a normally closed movable contact and a normally open movable contact are linked, and an adapter base on which a first transistor and a second transistor are mounted. When the movable contact is in an on state, the first transistor is turned on to obtain a level “H” output, and when the normally open movable contact is off, the second transistor is turned off to obtain a level “L” output. When the closed movable contact is turned off, the first transistor is turned off to obtain a level “L” output, and when the normally open movable contact is turned on, the second transistor is turned on to obtain a level “H” output. The adapter base and the existing auxiliary relay are mounted on an existing auxiliary relay mounting panel, and predetermined devices and drive mechanisms are controlled by the auxiliary relay. Is.

  Therefore, according to the present invention, since the existing auxiliary relay is inserted into the existing auxiliary relay mounting plate through the adapter base with the transistor circuit, the auxiliary relay can be provided without preparing a space for installation in another part. An auxiliary amplification contact unit having the same function as that obtained by adding can be easily configured.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. 1 to 4 show an embodiment of an amplification auxiliary contact unit according to the present invention.

  FIG. 4 is a view showing a state in which the door is opened and the inside of the vicinity where the auxiliary relay mounting plate is installed is seen in the switchboard which is the subject of the present invention.

  1 is a switchboard, and 20 is an auxiliary relay mounting plate. The auxiliary relay mounting plate 20 is provided with a plurality of auxiliary relays, which are used for controlling predetermined devices, drive mechanisms and the like via the output end.

  FIG. 2 is a circuit diagram of the amplification auxiliary contact unit of the present invention.

  Reference numeral 1 denotes an adapter base, which is provided with a plurality of nominal unit groups B1 to B4 in which an auxiliary relay RY and a transistor TR are connected. Reference numeral 2 denotes a main power supply that opens and closes the auxiliary relay RY. Reference numeral 3 denotes a constant voltage power supply for the transistor TR, which are connected to the small unit groups B1 to B4, respectively.

  FIG. 3 is a detailed connection diagram of B1 for one small unit group.

  The small unit B1 includes an auxiliary relay RY and transistors TR1 and TR2. The auxiliary relay RY includes a normally closed movable contact RYa, a normally open movable contact RYb, and fixed contacts 5a to 6b. Fixed contacts 5a to 6b are connected to the pin terminal PB. In the auxiliary relay RY, the normally closed movable contact RYa and the normally open movable contact RYb are interlocked with each other, and when one is turned on, the other is turned off.

  The collectors of the transistors TR1 and TR2 are connected to the constant voltage power supply 3, the emitters are connected to the output terminals 8a and 8b, the base of the transistor TR1 is connected to the fixed contact 6a, and the base of the transistor TR2 is connected to the fixed contact 6b. Has been. The transistors TR1 and TR2 are provided on the connector CN.

  PA is a pin terminal fitted to a connector terminal provided on the adapter base 1, and one is connected to the main power supply 2 via the line 4 and the other is connected to the output terminals 7a and 7b.

  In the state shown in the figure, since the normally closed movable contact RYa is turned on, the output terminal 7a has the same potential as the main power supply line 2, the transistor TR1 is turned on, and the output terminal 8a is at level "H". At this time, the normally open movable contact RYb is in an off state, the transistor TR2 is turned off, and the output terminal 8b is at the level “L”. For this reason, "H" and "L" signals can be obtained at the output terminals 8a and 8b corresponding to the on / off states of the normally closed movable contact RYa and the normally open movable contact RYb of the auxiliary relay RY. Therefore, these “H” and “L” signals can be taken into the personal computer, and the operation status of each device and drive mechanism can be monitored in the control room.

  FIG. 1 is a side view of an amplification auxiliary contact unit in which the circuit of FIG. 2 is mounted.

  BS is a base socket and is installed on the auxiliary relay mounting panel 20 of the switchboard. CN provided in the amplification auxiliary contact unit is a connector, the lower side is connected to the pin terminal PA of the BS, and the upper side is fitted to the pin terminal PB of the auxiliary relay RY. Yes. When the pin terminal PB of the auxiliary relay RY is inserted into the connector CN and the terminal PA is inserted into the base socket BS, the circuit states shown in FIGS. 2 and 3 are formed.

  As described above, the auxiliary relay in which the normally closed movable contact and the normally open movable contact are interlocked with each other, and the adapter base on which the first transistor and the second transistor are mounted. The first transistor is turned on to obtain a level “H” output, and when the normally open movable contact is turned off, the second transistor is turned off to obtain a level “L” output, while the normally closed contact is turned off. One adapter is turned off to obtain a level “L” output, and when the normally open movable contact is turned on, the second transistor is turned on to obtain a level “H” output. Are attached to an existing auxiliary relay mounting plate, and an auxiliary auxiliary contact unit for controlling predetermined equipment and a drive mechanism by the auxiliary relay, and the auxiliary relay on the adapter base Amplifying auxiliary contact unit in which a plurality of combinations with the first and second transistors are installed, and further, the auxiliary relay is pin-connected to the transistor-installed connector, and the connector is pin-connected to the existing auxiliary relay device plate A connected amplification auxiliary contact unit is configured.

  Therefore, according to the present invention, there is an advantage that a state equivalent to the addition of an auxiliary relay having the same function can be easily configured by the amplification auxiliary contact unit without preparing a space for installation in another part.

The side view of the amplification auxiliary contact unit of the present invention. The circuit diagram of the amplification auxiliary contact unit of the present invention. Detailed connection diagram for one small unit group. The external view of the state which opened the switchboard door and looked at the vicinity of an internal auxiliary relay mounting board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Adapter base, 2 ... Main power supply, 3 ... Constant voltage power supply, RY ... Auxiliary relay, RYa ... Normally closed movable contact, RYb ... Normally open movable contact, TRS ... Transistor, 8 ... Output end.

Claims (3)

  An existing auxiliary relay in which a normally closed movable contact and a normally open movable contact are linked, and an adapter base equipped with a first transistor and a second transistor are provided, and the first transistor is in an on state of the normally closed movable contact. Is turned on to provide a level “H” output, the second transistor is turned off when the normally open movable contact is turned off to obtain a level “L” output, and the first transistor is turned on when the normally closed contact is turned off. When the normally open movable contact is turned on, the second transistor is turned on to obtain a level “H” output, and the adapter base and the existing auxiliary relay are connected. An amplification auxiliary contact unit, which is mounted on an existing auxiliary relay mounting plate and controls predetermined devices and driving mechanisms by the auxiliary relay.   2. The amplification auxiliary contact unit according to claim 1, wherein a plurality of combinations of the existing auxiliary relay and the first and second transistors are installed on the adapter base. 3. The amplification auxiliary contact unit according to claim 1, wherein the auxiliary relay is pin-connected to the transistor-installed connector, and the connector is pin-connected to the existing auxiliary relay device plate.

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