JPH02152106A - Power control device - Google Patents

Abstract

PURPOSE:To obtain a compact type control device by housing the first unit having a main circuit breaking and switching function, the second unit for showing the operation mode of the first unit and the third unit for communication between the first unit and an external control device is respective containers of approximately the same dimensions. CONSTITUTION:The first unit 201 having a switch for breaking and switch ing a main circuit between a commercial power supply and a load is housed in a container 211. The second unit 202 is provided with an ammeter and a pilot lamp for indicating the operation mode of the first unit 201, and switches and the like for instructing the first unit 201 for switching the main circuit. The third unit 203 is for communication between the first unit 201 and an external control device. The aforesaid first, second and third units 201, 202 and 203 are housed in respective containers 211, 212 and 215 having the same vertical dimensions and approximately the same form. Respective units 201, 202 and 203 are connected to one another via communication lines 205, 206 and 207 and all the three units are installed on a common bed 204, thereby ensuring a compact design.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power control device for controlling the power of motors, etc., and electrical loads, such as heaters, in buildings, factories, etc.

[Conventional technology] Traditionally, when controlling electrical loads such as air conditioning equipment, pumps, and heaters in buildings, factories, and other facilities, such as turning on and off, or interrupting circuits in response to leakage or excessive current, Circuit breakers, electromagnetic contactors, relays, timers, operation switches, indicators, etc. that correspond to the electrical load capacity are individually selected and installed in a box called a control panel, power panel, etc.
Wiring was performed each time it was installed.

[Problems to be Solved by the Invention] In conventional control panels, a large number of control devices such as circuit breakers with capacities corresponding to each device to be installed are selected and combined, and wiring is performed. Therefore, the wiring method differs depending on the load control conditions, and there are problems in that the wiring requires a large number of man-hours and special skills are required for wiring. In addition, the control panel is large because many control devices are installed and wiring space between them is required, and there are restrictions on installation locations, and it is inconvenient to distribute the control panels near the loads. There are also other problems. Furthermore, for example, when it comes to building control panels, the specifications vary depending on the building, and the structure and wiring are complex and large, increasing costs, and it is difficult to start manufacturing the control panel until the specifications are finalized. However, there are problems such as the production time being longer.

In addition, conventional control panels are insufficiently equipped to centrally monitor and remotely control many power equipment, and this also needs to be designed and installed for each building or factory where it is installed. there were.

The present invention solves the problems of the conventional technology, requires a small installation space, is easy to manufacture and install, and can be used for both large and small-scale equipment, both collective and distributed. Furthermore, the present invention provides a power control device that can flexibly respond to various control forms such as remote control and centralized control.

[Means for Solving the Problems] Means for solving the above problems, as described in the claims, include a first unit that interrupts and opens/closes the main circuit, and an operation of the first unit. A second unit that displays the status and electrically opens and closes the first unit, and a third unit that communicates between the first unit and an external control device, in at least one of the vertical and horizontal dimensions. are housed in a common housing, and the first unit and the second unit are housed in a common case.
It is a power control device in which all or part of a housing housing a unit and a third unit is installed on a common board, and the units are connected to each other via a cable having a connector, and also about the unit. , an interrupting/closing means for interrupting and opening/closing the main circuit, a current transformer, a means for detecting the output of the current transformer and converting it into a binary signal, and comparing the stored setting values of the 2(if times signal) a first unit having a means for transmitting a cutoff signal to the cutoff opening/closing means; a means for transmitting and receiving binary information; a means for transmitting and receiving the binary information with the first unit; and a means for displaying the received binary information. , a second unit having a means for sending operation data to the first unit, a transmitting/receiving means for communicating with the first unit, and a third unit having a transmitting/receiving means for communicating with an external control device, all or part of the three units. This is a power control device consisting of a combination of

[Function] The first unit in the invention of claims 1 to 3 of the present invention has the main circuit interrupting and opening/closing functions, and the second unit has the function of displaying the operating state of the first unit and It has the function of opening and closing the first unit, and the third unit has the function of opening and closing the first unit.
It has the function of communicating between the Uni-Soto and an external control device, and each is housed in a container (casing) of approximately the same size.

Since the units are connected to each other via cables with connectors, they can be installed integrally on a common board, and the combinations can be set freely depending on the application. Wiring can be completed with just one person, and no special skills are required for installation.

In the invention of claims 4 to 6 of the present invention, the first
The unit constantly detects the state of the main circuit and compares the state with the stored setting values to detect circuit abnormalities such as overloads, short circuits, reverse phase, and earth leakage, and then activates the circuit breaker. Sends a signal and shuts off the main circuit. At the same time, the current state of the main circuit is sent to the second unit or the third unit by the transmitting/receiving means, and the interrupt switch is opened/closed or stored in response to the information from the second and third units. Change the value of the information.

The second unit displays data indicating the state of the main circuit sent from the first unit, sends a signal to the first unit for opening and closing the interrupt switch, and also stores data in the first unit. Send data to change set values.

The third unit sends data indicating the state of the main circuit sent from the first unit to the host computer or another third unit, and also sends command signals from the host computer to the first unit. send to unit.

[Example] The present invention will be described in detail below with reference to Examples.

1 and 2 are perspective views showing an embodiment of the invention according to claim (1). In FIG. 1, a first unit 2o1 is housed inside a container 211, which has a cutoff switch that cuts off and opens/closes a main circuit connecting a commercial power source and a load. The second unit 202 is provided with an ammeter and a pilot lamp that display the operating status of the first unit, and switches that instruct the first unit to open and close the main circuit. It is housed in a container 212 that has the same vertical dimension and approximately the same shape as the container 211.

The third unit 203 is a unit that performs communication between the first unit and an external control device, and is similar to the container 211.
, and is housed in a container 213 that has the same vertical dimension and approximately the same shape as the container 212. Each unit includes a communication line 205 with a connector 215 in this example, a communication line 206 with a connector 214, and a connector 216.
and a communication line 207 having a connector 217. When the three units connected in this way are installed on a common board 204, they can be assembled into a compact shape as shown in Figure 2, and only an extremely small amount of space is required even if the entire unit is installed near the load. I don't. Furthermore, by arranging a plurality of power control devices each including these three units, it is also possible to centrally control a plurality of power loads at one location.

The invention of claim (2) is a case in which communication with an external control device is not required, and the third unit is omitted from the power control device, and the invention of claim (3) is ,
This relates to a case where the second unit is omitted from the aforementioned power control device when the power control device is placed near the load and centralized monitoring is performed by a central monitoring device.

FIG. 3 is a diagram showing an embodiment of claim (4) of the present invention,
In the figure, 1 is a block diagram showing the first unit of the present invention, 2 is a block diagram showing the second unit, and 3 is a block diagram showing the east 3 unit.
FIG. 2 is a block diagram showing the units of FIG.

In the figure, a three-phase commercial power supply is led to a first unit by an electric wire 5, and a circuit breaker 1 is connected inside the first unit.
0, and is sent to the load 19 via the electric wire 6 via the current transformer 13.

The current transformer 13 constantly detects the current in the main circuit from the commercial power supply to the load, and the current value is converted into a digital value by the A/D converter 14 and then sent to the microprocessor unit (M
PU) 15.

The MPU 1 5 compares the digital value with the tripping characteristic data stored in the memory 17, determines an overload state, a short circuit state, a reverse phase state, an earth leakage state, etc. A signal is sent and the main circuit is disconnected by the disconnection mechanism 11. The transmit/receive interface 16 sends the digital value to the second unit and also receives the signal from the second unit or the third unit and sends it to the M
Inform PU15.

In the second unit 2, the transmission/reception interface 21 sends the signals sent from the first unit 1 to registers 23 and 24 according to their contents.

The signal sent to the register 23 is a signal indicating the current value of the main circuit, and the signal is sent to the ammeter 26 via the D/A converter 28.
will be displayed. Furthermore, the signal sent to the register 24 is
These are signals indicating abnormalities such as overload, short circuit, reverse phase, and leakage, and signals indicating the open/close state of the cutoff switch 12, and these are sent to the display 27 and displayed. The operating device 25 is provided with a switch for sending commands to the first unit, a switch for setting and changing characteristic values stored in the first unit, and the like. The received signal is sent to the first unit through the register 22 and the transmission/reception interface 21. In the first unit, the MPU 15 determines the signal sent from the second unit, and if it is a command signal to open or close the interrupting switch 10, instructs the interrupting switch 10 to open or close, The opening/closing mechanism 12 opens and closes the main circuit. Further, when the signal is a characteristic value change signal, the characteristic value stored in the memory 17 is changed in response to the signal.

Depending on the embodiment, the opening/closing command signal for the first unit may be
Directly sends the first signal without going through the sending/receiving interface.
It may also be sent to the isolation switch of the unit. With such functions, the present invention allows, for example, changing the rated current and changing the tripping characteristics, and there is no need to change the overall system design or each component for each load used, and the same device can be used. can flexibly respond to various loads.

The third unit 3 includes the first unit, the second unit, the central monitoring device 4, and another third unit 3.
Performs communication control to communicate with external sources such as °. The transmission/reception interface 31 receives information sent from the first unit via the communication line 102, and the MPU 32 stores this in the memory 33. When requested by the central monitoring device 4, the information is sent via the communication interface 34. It is sent to the central monitoring device 4. Conversely, when there is an instruction signal from the central monitoring device 4 to the first unit, the MPU 3
2 sends this to the first unit through the communication line 102. In the same manner as described for the second unit, the first unit operates in accordance with the instruction signal. 35 is a switch for setting the address to which the unit and unit 3 belong;
37 is an optional intercom device, and 36 is an interface therefor.

The invention of claim (5) relates to a case where the power control device does not require communication with the outside, and the third unit 3 in FIG. 3 is omitted, and the first unit 1 and the second unit are replaced. 2 constitutes a power control device, and claim (6)
For example, when controlling multiple power control devices centrally at one location, the invention described in section 2.
This relates to the case where the power control device is configured by omitting the 22 bits, and its configuration and operation are as clear from the above.

The first, second, and third units above the effect unit are each housed in a small container, and even if they are combined, they can be combined into an extremely compact size.

When using it, simply prepare the necessary units, wire the commercial power supply and load to the first unit, and connect the second or third unit with a communication line to complete the wiring. No special skills are required for wiring. Since characteristic values can be freely set according to the corresponding load afterwards, the same unit can handle any load.

Therefore, unlike conventional control panels, there is no need to select, combine, and wire a large number of control devices such as circuit breakers with capacities corresponding to each device to be installed.
The wiring method is the same even if the control conditions are different, and the wiring man-hours are reduced. Furthermore, there is no restriction on the installation location, and it is possible to place many UniSotos in a concentrated manner or to disperse them near the load.

In addition, it is possible to centrally monitor and remotely control many power devices just by combining units.
There is no need to design each building or factory where it is installed.

The present invention solves the problems of the conventional technology as described above, requires a small installation space, is easy to manufacture and install, and can be used for both large-scale and small-scale, collective and distributed equipment types. Moreover, it has many advantages in that it can flexibly support various control forms such as remote control and prefectural control.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a connected state of an embodiment of the invention according to claim (, 1) of the present invention, FIG. 2 is a perspective view showing the assembled state, and FIG. FIG. 4 is a block diagram showing an embodiment of item 4). 1...Maya 1 unit, 2...2nd unit, 3...
Kaya 3 unit, 4...Central monitoring device, 1o...Break switch, 11...-Blocker groove, 12...Opening/closing mechanism, 13...
Current transformer, 14...A/D converter, 15...Microprocessor unit, 16...Transmission/reception interface, 1
7...Memory, 19...Load, 21...Transmission/reception ink-face, 22.23.24...Register, 25
...Operator, 26..Ammeter, 27..Display device, 3
1. Transmission/reception interface, 32.. Microprocessor unit, 33.. Memory, 34.. Communication interface, 35.. Address switch, 101.
102.103...Communication line, 201...Pole unit, 202...Second unit, 203...Third unit, 204...Substrate, 211...Container, 212...Container, 213... Container, 205-20?・・Cable, 21
4～218... Connector Representative Patent Attorney Takashi Honma

Claims (6)

[Claims] (1) A first unit that interrupts and opens/closes the main circuit, a second unit that displays the operating status of the first unit and electrically opens/closes the first unit, and the first unit. and a third unit that performs communication between the external control device and the first unit, the second unit, and the third unit are each housed in a case having the same length or width in at least one dimension, and the first unit, the second unit, and the third unit A power control device in which a case containing units is installed on a common board, and the first unit, second unit, and third unit are connected via a cable having a connector. (2) A first unit that interrupts and opens/closes the main circuit, and a second unit that displays the operating status of the first unit and electrically opens/closes the first unit, in a vertical or horizontal manner. The first unit and the second unit are each housed in a housing having a common dimension, and the housing containing the first unit and the second unit is installed on a common substrate, and the first unit and the second unit and a power control device connected via a cable with a connector. (3) The first unit, which interrupts and opens/closes the main circuit, and the third unit, which communicates between the first unit and the external control device, have at least one vertical or horizontal dimension in common. The first unit and the third unit are housed in a housing respectively, and the housing containing the first unit and the third unit is installed on a common board, and the first unit and the third unit are connected via a cable having a connector. Connected power control device. (4) an interrupting/closing means that is inserted into the main circuit and has the function of interrupting and opening/closing the main circuit, a current transformer, and a means for detecting the output of the current transformer and converting it into a binary signal; a first unit having means for comparing the binary signal and a stored setting value and sending a cutoff signal to the cutoff opening/closing means; and means for transmitting and receiving binary information; and a transmitting and receiving means for communicating with the first unit. a second unit having means for displaying received binary information and means for sending instruction data to the first unit; means for transmitting and receiving with the first unit; and transmitting and receiving with an external control device. A power control device comprising a third unit having means. (5) an interrupting/closing means inserted into the main circuit and having a function of interrupting and opening/closing the main circuit, a current transformer, and a means for detecting the output of the current transformer and converting it into a binary signal; a first unit having means for comparing the binary signal and a stored setting value and sending a cutoff signal to the cutoff opening/closing means; and means for transmitting and receiving binary information; and a transmitting and receiving means for communicating with the first unit. A power control device comprising: a second unit having: a means for displaying received binary information; and a means for transmitting instruction data to the first unit. (6) an interrupting/closing means that is inserted into the main circuit and has the function of interrupting and opening/closing the main circuit, a current transformer, and a means for detecting the output of the current transformer and converting it into a binary signal; a first unit having means for comparing the binary signal and a stored setting value and sending a cutoff signal to the cutoff opening/closing means; and means for transmitting and receiving binary information; and a transmitting and receiving means for communicating with the first unit. and a third unit having means for transmitting and receiving communication with an external control device.