JP2003219516A - Intermediate connection unit in receiving and distribution equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve wiring workability and shorten the working time by connecting an element apparatus and an intermediate connection unit using a connector connection terminal that is sharable in the use of wires between both the apparatus and the unit, and by replacing the wires on a terminal base. <P>SOLUTION: Receiving and distribution equipment is provided with an electronic apparatus connector connection terminal 2b, that is sharable in use for change of connections and comprises the necessary number of terminals, a blocker connector connection terminal 2c, that is sharable in use for the change of connection, comprises the necessary number of terminals, an external terminal base connector connection terminal 2a, that is sharable in use for the change of connection and comprises the necessary number of terminals, and the terminal base 6, to which the necessary number of terminals are connected and in which the change of wiring is allowed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate connection unit of power receiving and distributing equipment for relaying with circuit breakers, electronic devices and other elemental equipment in the power receiving and distribution equipment.

[0002]

2. Description of the Related Art Conventionally, from the viewpoint of wiring workability, connection (coupling) between element devices such as a circuit breaker and electronic equipment has been carried out once by a relay terminal block. Further, in order to transmit information from these elemental devices to a higher-level monitoring device or to transmit information to another lined panel, an auxiliary relay receives a contact regardless of the presence or absence of contact amplification.

[0003]

If a relay terminal block is used for connection between various element devices as in the prior art, the number of terminal blocks will be too large and the control space in the panel will be reduced. Leads to pressure. Further, until now, each wiring has been performed by individual wiring that is performed by individually creating a line, and thus the wiring work has been troublesome. In addition, since the auxiliary relay is once used as a means for transmitting the contact information to the higher-level monitoring device and other boards, additional individual wiring is required, and the cost of wiring work becomes a problem.
The present invention relates to an intermediate connection unit for power receiving and distribution equipment, wherein connection between an element device and an intermediate connection unit is performed through a connector connection terminal that can share wiring between both, and a format change or wiring change is performed with a connector type terminal block or a fixed type. It is intended to improve the wiring workability and shorten the work time by using the terminal block.

[0004]

The intermediate connection unit of the power receiving and distributing equipment according to the present invention can be shared for connection changes, and has a required number of terminals for electronic equipment connector connection terminals, and for connection changes. It can be shared and has a required number of terminals for circuit breaker connector connection terminals, can be shared for connection changes, and has a required number of terminals for external terminal block connector connection terminals, connected to the required number of terminals, It is equipped with a terminal block whose wiring can be changed.

The above terminal block is a connector type terminal block which is connected to terminal block connector connecting terminals having a required number of terminals and whose wiring can be changed. Also, the above terminal block is
It is a fixed type terminal block that can be fixedly connected to the required number of terminals and the wiring can be changed. The connector type terminal block connected to the connector type terminal block connector connecting terminal is arranged separately from the intermediate connection unit body. The fixed terminal block is provided with a removable connector type terminal block. Furthermore, it has an auxiliary relay that operates according to a failure signal from an electronic device and amplifies the failure signal, and a changeover switch for trip selection.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 is a block diagram in which an intermediate connection unit of a power receiving and distribution facility according to a first embodiment of the present invention and element devices (electronic devices and circuit breakers) are connected. FIG. 2 is a conceptual perspective view showing the intermediate connection unit of the power receiving and distribution facility according to the first embodiment. Reference numeral 1 is an intermediate connection unit body (Relay BoX) of the power receiving and distributing equipment, which is a common part of a control circuit including a circuit breaker and electronic equipment. 2a is an external terminal block connector connecting terminal that is provided in the intermediate connection unit body 1 and connects to the external terminal block 3. The number of terminals can be shared for connection changes in the intermediate connection unit. 3 has the required number of connecting lines. Reference numeral 2b denotes an electronic device connector connection terminal that is provided in the intermediate connection unit main body 1 and is connected to the electronic device 4, and the number of terminals can be shared for connection changes in the intermediate connection unit, Have the required number of connecting lines. 2c is an intermediate connection unit body 1
Is a connector connection terminal for a circuit breaker that is connected to the circuit breaker 5, and the number of terminals can be shared for the connection change in the intermediate connection unit, and has a necessary number of connection lines with the circuit breaker. .

Reference numeral 6 denotes a connector type terminal block which is detachably connected by a connector connection terminal 2d (not shown) provided in the intermediate connection unit body 1. The number of terminals of the connector connection terminal 2d depends on the connection change. It can be shared and has the number of connecting wires required for the connector type terminal block 6. The connector-type terminal block 6 is used for relaying between the external terminal block 3, which is connected to the main body 1 of the intermediate connection unit 3, the electronic device 4 and the circuit breaker, and for connection change and format change. Reference numeral 7 is a switch for tripping a circuit breaker due to an undervoltage element, which selects whether or not to trip the circuit breaker with an undervoltage. The intermediate connection unit main body 1 is provided with a contact receiver and an auxiliary relay responsible for contact amplification. The intermediate connection unit includes an intermediate connection unit body 1, connector connection terminals 2a, 2b, 2c, a connector type terminal block 6 and its connector connection terminals, a changeover switch 7,
And an electric circuit inside the intermediate connection unit body 1.

FIG. 3 is a sectional view of an essential part showing a mounted state of the connector type terminal block according to the first embodiment. Reference numeral 1a denotes a box body of the intermediate connection unit body 1 in which a circuit board 8 is housed. 6 is a connector type terminal block, which is electrically connected to the connector type terminal block connector connecting terminal 2d provided on the circuit board 8 and is detachably installed. Although the terminal block 6 has been described as a connector type terminal block that can be removed from the circuit board 8, it may be a fixed type terminal block in which the terminals of the terminal block 6 are fixed to the terminals of the circuit board 8 by soldering or the like.

Embodiment 2. FIG. 4 is a sectional view of an essential part showing a mounted state of the connector type terminal block according to the second embodiment. The same or corresponding parts as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted. 6 is a connector-type terminal block, which is a connector-type terminal block connector connection terminal 2 provided on the circuit board 8.
It is electrically connected to d and is removably installed. Further, the connector type terminal block 6 is divided into two terminal blocks 6a and 6b, and it goes without saying that the entire connector type terminal block 6 is detachably installed. It is used for relaying, changing wiring, changing formats, and replacing defective parts. In addition,
The terminal block 6 has been described as a connector type terminal block that can be removed from the circuit board 8. However, the terminal block 6a on the circuit board 8 side of the terminal block 6 is fixed to each terminal of the circuit board 8 by soldering or the like. The terminal block 6b may be a connector type terminal block, and the terminal block 6b may be detachably installed by electrically connecting to the connector type terminal block connector connection terminal provided on the fixed terminal block 6a.

Embodiment 3. FIG. 5 is a conceptual perspective view showing a main part of the intermediate connection unit of the power receiving and distribution facility according to the third embodiment. The same or corresponding parts as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The connector type terminal block 6 (not shown in FIG. 5) is separated from the intermediate connection unit main body 1 and installed in a convenient location of the power receiving and distributing facility. Reference numeral 2d denotes a connector type terminal block connector connecting terminal, and the connector type terminal block connector connecting terminal 2d and the connector type terminal block 6 are connected to each other by a multi-core lead wire connected to the connector.

Embodiment 4. FIG. 6 is a schematic view of the inside of a power receiving and distribution facility (switchboard control room) when the intermediate connection unit of the first embodiment is applied to a combination of a circuit breaker and an electronic device. The connection between the intermediate connection unit 11 and the circuit breaker 5 is, for example, a connection between the on / off contact of the circuit breaker 5 and the contact of the motor power supply, and the auxiliary contact for status display of the circuit breaker 5. For the connection between the intermediate connection unit 11 and the electronic device 4, for example, all contacts and auxiliary relays are connected so that the measurement, control, display, and protection functions of the electronic device 4 can all be used. Here, since the two connector connection terminals of the electronic device 4 and the two connector connection terminals 2b of the intermediate connection unit 11 have a one-to-one correspondence, the dedicated cable 14 can be used. Since the connection between the circuit breaker 5 and the intermediate connection unit 11 is also the connection described above, this can also be the dedicated cable 15.

The connection line from the intermediate connection unit 11 to the external terminal block 3 can also be fixed by using the dedicated cable 13 as an information line to be output to the external terminal block 3 to fix the output contact element. It is also possible to automate the test by standardizing the wiring work of the parts.

By adding a function of a changeover switch for selecting a circuit breaker trip due to an undervoltage element, a sudden change in specifications of the circuit breaker trip due to an undervoltage element (selection of whether to trip the circuit breaker due to an undervoltage) ), Etc., so that it can be dealt with without making such a large modification.

In the third embodiment, the connector type terminal block 6
Is separated from the intermediate connection unit main body 1 and installed at a convenient location of the power receiving and distributing equipment. In FIG. 6, the connector type terminal block 6 is the connector type terminal of the intermediate connection unit main body 1. The installation position can be freely set by installing at the position of the connector type terminal block 36 (position shown by the alternate long and short dash line) through the lead wire instead of directly connecting to the base connector connection terminal without using the lead wire. The degree and convenience can be improved.

In FIG. 6, two sets of intermediate connection units, which combine a circuit breaker and an electronic device, are arranged. In the second set, 21 is an intermediate connection unit, 25 is a circuit breaker,
35 is a dedicated cable for the circuit breaker 25, 24 is an electronic device,
34 is a dedicated cable for the electronic device 24, 23 is an external terminal block, and 33 is a dedicated cable for the external terminal block 23.

Embodiment 5. 7 and 8 show internal circuit diagrams of the intermediate connection unit main body of the first embodiment in both figures, and show the entire circuit diagram by combining α and α and β and β in both figures. In both figures, the arrows intersecting with the outer frame of the one-dot chain line represent the terminals of the connector connection terminals 2a, 2b, 2c, and the black circles represent the connector connection terminal 2d for the connector type terminal block equipped in the intermediate connection unit 11. Represents the terminal. In the power source section shown at the left end of FIG. 7, the connector type terminal block 6 can be used to set the measurement power source, the control power source, and the motor power source individually (or the same).

FIGS. 9 and 10 show an example of a connection circuit diagram of the internal connection unit main body and the external connection of the intermediate connection unit body of the fifth embodiment, showing α and α, β and β in both diagrams. Together,
The whole circuit diagram is shown. The functions of FIGS. 7 and 8 will be described based on an example of the connection circuit diagrams of FIGS. 9 and 10. In FIG. 9, the power supply unit of FIG. 7 is connected so as to be common to the positive power supply BP and the negative power supply BN. In FIG. 7 and FIG. 8, the connection with the circuit breaker is indicated by VCB (2c). V shown in the upper left part of FIG.
In the CB, as shown in FIG. 10, it plays a role of pulling in the a contact b contact of the auxiliary contact representing the state of the circuit breaker 5, and is used when the state information of the circuit breaker is amplified by the connector type terminal block 6.

In the lower left portion of FIG. 7, as shown in FIG. 9, it is a terminal for supplying power to the spring biasing motor M of the circuit breaker 5, and the closing coil C and the opening coil T are connected to each other. It is a terminal for exciting. VCB shown in the lower left of FIG.
In the part (1), the connector type terminal block 6 receives information from the above-described state display auxiliary contact pull-in shown above. In the VCB portion shown in the lower center of FIG. 8, as shown in FIG. 10, the auxiliary contact (auxiliary contact of closing and opening coils C, T) of the breaker 5 is displayed by an auxiliary relay 52 having a latch function. The contact 52 is formed for receiving and outputting the circuit breaker status display portion in the MP 21 (electronic device) and the external terminal block 3.

MP21 indicates a connection with an electronic device. As shown in FIG. 9, the portion shown in the upper part of FIG. 7 is a portion for receiving the measurement / fault information detected by the electronic device arranged in the switchboard. Each fault element (fault contact) is connected to the auxiliary relays X1 to X5 depending on its type. The normally open contact connected to the auxiliary relay X5 is a contact that operates with the abnormal output of the MP21 main body. The MP21 part shown at the bottom of FIG.
Contact for opening and closing control of the circuit breaker 5 (C and T shown in FIG. 9),
Circuit breaker status display relay (GL, RL), Lo for circuit breaker operation
Cal / Remote switching and display contact (operation mode), general-purpose input relay (for example, VCB ON-OFF control door switch relay), general-purpose output contact (display VCB ON-OFF state on the board) It is a terminal that is connected to the contact). Further, as shown in FIG. 9, it is a terminal for connecting a TRIP contact, a VCB closing relay CX for remote operation, and a VCB opening relay TX for remote operation.

The contacts from the auxiliary relays X1 to X4 in the figure are the contacts for output (outer end) to the external terminal block 3,
It is assigned as a contact for amplification to the connector type terminal block 6. The contacts of the auxiliary relay X5 are assigned as contacts for amplification to the connector type terminal block 6. The auxiliary relay 43
For Local / Remote, this information is assigned to the contact for output to the external terminal block 3 and the contact for amplification to the connector type terminal block 6.

The contacts for output to the external terminal block 3 shown by the outer end in the upper right portion of FIG. 8 are the above-mentioned X1 to X.
In addition to the contact information of 4, 52, and 43, it has a contact for controlling the on / off of the circuit breaker 5 from the center.

The interlock in the upper left portion of FIG. 7 is used to add information of another board to the interlock. Figure 9
The interlock circuit shown in is a contact which is a normally closed contact and is opened by a failure signal of another board. In the failure contact and on / off operation parts in the upper part of FIG. 7, the connector type terminal block 6 is led out so that the general-purpose output contact of the electronic device 4 described above can be used, and the breaker 5 is inserted from the center. Has the role of performing the off operation. The role of the failure lump and the relay amplifier shown in the lower part of FIG. 8 is a part used when amplifying the contact information of the auxiliary relays X1 to X5 and 43.

The external failure trip section has a function of operating the auxiliary relay 27 in the intermediate connection unit 11 and tripping the circuit breaker 5 by a trip signal due to a failure (eg, undervoltage) that has occurred externally. The changeover switch 7 is, for example, a slide type switch, and selects whether to trip the circuit breaker due to an undervoltage. The externally turned on / off part is used when the operation of the circuit breaker 5 is configured without using the electronic device 4, or when the circuit is configured by using the position switch of the circuit breaker 5. In addition, in FIG. 10, A is connected to the positive power source BP.

Sixth Embodiment 11 and 12 show another example of the connection circuit diagram of the internal connection unit body and the external connection of the intermediate connection unit body according to the sixth embodiment, and FIGS. 11 and 12 show α, α, and β in both diagrams.
And β are combined to show the entire circuit diagram. 9 and 10
The portion with the fixed connection in FIG. 11 is the same in FIGS. 11 and 12, and is omitted in the figure. The power supply units in FIGS. 11 and 12 are control power supplies BP1 and BN1, and measurement power supplies BP2 and B.
N2 and motor power supplies BP3 and BN3 are individual power supplies. The interlock part is the same as in FIGS. 9 and 10. In the lower left part of FIG. 12, the VCB status signal is amplified by a relay. In the lower right part of FIG. 12, the relay 86 causes the circuit breaker to trip due to a failure signal from another panel. The + and-wires of the relay extend across the boards.

As described above, according to the present invention, regarding the intermediate connection unit 11 of the power receiving and distributing equipment, the external terminal block 3, the electronic device 4, the circuit breaker 5 and the intermediate connection unit 11 are connected by the connector connection terminals 2a, 2b. , 2c, and the required number of connector connection terminals is set so that connection lines (cables) can be shared and fixed for connection changes. Further, the connection between the connector type terminal block 6 and the intermediate connection unit main body 1 is performed through the connector connection terminals, and the number of terminals of the connector connection terminals is the number required to make the connection lines common and fixed for connection changes. Set up minutes. In the connector type terminal block 6, the connection to the external terminal block 3, the electronic device 4, and the circuit breaker 5 can be changed. In addition, the connector type terminal block 6
Alternatively, the connection to the external terminal block 3, the electronic device 4, and the circuit breaker 5 can be changed by replacing a part of 6a or 6b itself.

[0026]

As described above, according to the intermediate connecting unit of the power receiving and distributing equipment of the present invention, the connector connecting terminal for electronic equipment, which can be shared for the connection change and has the necessary number of terminals, and the connection change It is possible to connect to the circuit breaker connector connection terminal that has the required number of terminals, and to connect the connection change, the external terminal block connector connection terminal that has the required number of terminals and the required number of terminals. Since the terminal block is connected and the wiring can be changed, the connection line from the intermediate connection unit to the electronic device, the circuit breaker, and the external terminal block can be shared for the connection change.
In addition, the connection from the main body of the intermediate connection unit to the terminal block can be shared for changing the connection. As a result, it is possible to reduce the time required for wiring work in the power receiving and distribution equipment, contribute to standardization of external terminal blocks such as test automation, and reduce costs.

Further, since the above-mentioned terminal block is a connector type terminal block which is connected to the terminal block connector connecting terminals having the necessary number of terminals and the wiring can be changed, the workability of connection is improved and a single unit failure occurs. If you do, you can easily replace it. Further, the above-mentioned terminal block is a fixed type terminal block in which the required number of terminals are fixedly connected and the wiring can be changed, so that it can be manufactured at low cost. Further, since the connector type terminal block connected to the connector type terminal block connector connecting terminal is arranged separately from the intermediate connection unit body, the degree of freedom in the arrangement of the connector type terminal block is improved and the arrangement position is improved. The convenience is improved. Further, since the fixed type terminal block is provided with a detachable connector type terminal block, the connector type terminal block is replaced, and the relay terminal, wire connection and format are partially changed, and the defective portion is replaced. be able to.

Further, since it has an auxiliary relay that operates in response to a failure signal from an electronic device and amplifies the failure signal, and a changeover switch for trip selection, it is possible to easily cope with sudden changes in specifications.

[Brief description of drawings]

FIG. 1 is a block diagram in which an intermediate connection unit and a component device of a power receiving and distributing facility according to a first embodiment of the present invention are connected.

FIG. 2 is a conceptual perspective view showing an intermediate connection unit of the power receiving and distribution facility according to the first embodiment.

FIG. 3 is a cross-sectional view of essential parts showing a mounted state of the connector-type terminal block according to the first embodiment.

FIG. 4 is a cross-sectional view of essential parts showing a mounted state of the connector-type terminal block according to the second embodiment.

FIG. 5 is a conceptual perspective view showing a main part of an intermediate connection unit of a power receiving and distribution facility according to a third embodiment.

FIG. 6 is a schematic diagram of the inside of a power receiving and distribution facility (switchboard control room) when the intermediate connection unit of the first embodiment is applied to a combination of a circuit breaker and an electronic device.

FIG. 7 shows an internal circuit diagram of the intermediate connection unit body of the first embodiment.

FIG. 8 shows an internal circuit diagram of the intermediate connection unit body of the first embodiment, and FIG. 7 shows an overall circuit diagram of the intermediate connection unit body.

FIG. 9 shows an example of a connection circuit diagram of an internal circuit diagram and an external connection of the intermediate connection unit body of the fifth embodiment.

FIG. 10 shows an example of a connection circuit diagram of an internal connection unit body and an external connection of the intermediate connection unit body of the fifth embodiment, and FIG.
And show the whole circuit diagram.

FIG. 11 shows another example of a connection circuit diagram of an internal circuit diagram and an external connection of the intermediate connection unit body of the sixth embodiment.

FIG. 12 shows another example of the connection circuit diagram of the internal connection unit body and the external connection of the intermediate connection unit body of the sixth embodiment, and FIG. 11 shows the entire circuit diagram.

[Explanation of symbols]

1 Intermediate Connection Unit Main Body 1a Box 2a Connector Connection Terminal for External Terminal Block 2b Connector Connection Terminal for Electronic Equipment 2c Connector Connection Terminal for Circuit Breaker 2d Connector Type Terminal Block Connector Connection Terminal 3 External Terminal Block 4 Electronic Equipment 5 Circuit Breaker 6 Connector Shape terminal block 6a Terminal block 6b Terminal block 7 Changeover switch 8 Circuit board 11 Intermediate connection unit 13 Special cable 14 Special cable 15 Special cable.

Claims (6)

[Claims] 1. A connector connection terminal for an electronic device, which can be commonly used for connection changes, and which has a required number of terminals, and a circuit breaker connector connection terminal, which can be shared for connection changes and has a required number of terminals, An intermediate connection unit for power distribution equipment that can be shared for connection changes and has a terminal connection connector for external terminal blocks that has the required number of terminals and a terminal block that can be changed in wiring and that is connected to the required number of terminals . 2. The intermediate connection unit for power distribution equipment according to claim 1, wherein the terminal block is a connector type terminal block which is connected to terminal block connector connection terminals having a required number of terminals and whose wiring can be changed. . 3. The terminal block is a fixed type terminal block in which the required number of terminals are fixedly connected and the wiring can be changed.
Intermediate connection unit for the described power distribution equipment. 4. The intermediate connection unit for power distribution equipment according to claim 2, wherein the connector type terminal block connected to the terminal block connector connection terminal is arranged separately from the intermediate connection unit body. 5. The intermediate connection unit for power distribution equipment according to claim 3, wherein the fixed terminal block is provided with a removable connector type terminal block. 6. The intermediate connection unit for power distribution equipment according to claim 1, further comprising an auxiliary relay that operates in response to a failure signal from an electronic device and amplifies the failure signal, and a changeover switch for trip selection.