JPS5910112A - Switchboard 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 switchboard device in which various display elements and operating elements attached to a monitoring surface of a switchboard are integrated for each single electric circuit.

Conventionally, the display on the switchboard and the configuration of the control equipment were Kf! as shown in Figure 1. It had been. In Figure 1, (1) is the door of the switchboard, (2) is the measurement limit of the ammeter, voltmeter, wattmeter, etc. installed on the door of the switchboard, and (3) is the field (1) above.
The operation switch of the control circuit installed in the control circuit controls the closing of circuit breakers, etc. (4) is a protective relay such as an overcurrent relay or a ground fault relay installed in the above field (1), and (4a
) is its operating status display section.

(5) is a rung indicating the operation of the circuit breaker, such as on, off, trip, etc.

In this way, a conventional switchboard has a measuring meter (2), a lamp (
Display devices such as 5), control switches (3), protection relays (4), etc., and control devices such as operation switches (3) and protection relays (4) are installed on the door (1) in groups of four, and When installing, cut holes in the door (1) according to the size of each device.
It is installed with an opening in the front of the door so that the monitoring side can be viewed from the front of the door. Therefore, if the type, size, number, etc. of display devices and control devices change depending on the function, it is necessary not only to replace the devices, but also to review the placement of each device.
The drawback was that it required changing the hole in the door and making major changes to the wiring.

In order to eliminate such drawbacks of the conventional art, the present invention collects display elements such as measuring meters, lamps, and protective relay display parts, and operating elements such as operation switches into each single electrical circuit connected to the disconnector. One object of the present invention is to provide a switchboard device which is integrated into a panel shape and can be attached to the monitoring surface of a switchboard so that display and operation functions can be managed in an integrated manner.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 shows an example of the configuration of a single electric circuit to which the present invention is applied. FIG. 2(a) shows the general configuration before being integrated, and FIG. 2(b) indicates the configuration when integrated. In Fig. 2, (11) l- is an ammeter,
(12) is a wattmeter, (13) is a power factor meter, (14) is a voltmeter, (15) is a wattmeter, (16) is a breaker (2o)
(17) is the operation switch for the control circuit that opens and closes the breaker (2o), (18) is the ground fault relay,
(19) is overcurrent relay, (21) is transformer, (22)
is a current transformer, (23) is a tangerine current transformer, and (24) is a transformer (
21) and a current transformer (22), a detection unit that manually calculates the signals from (23), and (25) a monitoring display board that is the subject of this invention, which includes measurement meters such as ammeters and voltmeters, and operation indicators. Display elements such as lamps and relay display parts, and operation elements such as operation switches are integrated.

Figure 3 shows a diagram of the case where the various elements included in the single electric circuit shown in Figure 2 are integrated and installed on a switchboard.
) is the switchboard door, (25) V′i monitoring door (1
) is a monitoring display board that is attached to the front surface of the monitor with screws or the like, and an example of its specific configuration is shown in Fig. 4.

In Fig. 4, numeral (25) is a monitoring display board, which is made up of a panel-shaped box. (26) is a display section that displays the current, what is displayed on display section (26), (28) operation display such as breaker on, off, trip, etc. and protective relay operation display The status display section (29) is an alarm display section, and the display sections (26) to (29) are alarm display sections.
29) constitute display elements necessary for monitoring. (
Reference numeral 30) indicates an operation switch for the control circuit, and reference numeral 31 indicates a changeover switch for switching the display contents of the instruction display section (26) and the display section (27), which together with the operation switch (30) constitute an operation element. Then, display elements (26) to (2
9) and the operating elements (30) and (31) are housed in a single panel-shaped box in a collective manner, that is, as a unit, for each single electric circuit connected to one breaker.

Here, each of the display sections (26) to (29) is composed of an element that does not have mechanical operation, such as a light emitting diode, a liquid crystal, a luctroluminescent display, a glazma display, a fluorescent display, and a CRT. Further, the instruction display section (26) may be either an analog display or a digital display. Preferably, current, voltage-power, power factor, frequency, reactive power, etc. are displayed in analog form, and electric energy, reactive power amount, etc. are displayed in analog form. It is better to have a digital display.

Note that the measuring section of the measuring meter in the instruction display section (26) K is computerized to make it smaller and thinner. Furthermore, the main body of the protective relay is separated from its status display section (28) and attached to the breaker side or the like.

In such a configuration, the display of the measurement take such as current, voltage, power, etc. is selected and displayed on the instruction display section (26) and the display section (27) by the display changeover switch (31).

Therefore, the minimum necessary number of instruction display sections (26) and display sections (27) are arranged in advance, and the internal circuits of the measurement section and changeover switch of the meter are arranged so that only the necessary ones can be displayed according to the specifications. It is sufficient to digitize and incorporate it into the monitoring display board (25).

In addition, when an alarm is issued in the event of an accident, etc., the display changeover switch (
17), the display units (26), (27) and the # information display unit (29) perform the display. Furthermore, the status display section (2
8) As described above, the operating status of circuit breakers, protective relays, etc. is always displayed, and abnormalities are displayed on the alarm display section (29) as well as on the alarm display section (29). Alternatively, the alarm display section (29) may be omitted and the alarm may be displayed on the display section (27). Further, if there is less measurement data to be displayed on the instruction display section (26), the changeover switch (31) may be omitted, or a monitoring display board (25) may be prepared for each specification. Furthermore, a monitoring display board (2
5) shows an example of attaching it to the door of the switchboard, but it may also be attached to the front panel of the breaker if it serves as a monitoring surface.

As described above, this invention integrates the display elements and operation elements for each single electric circuit connected to one breaker to form a monitoring display board, making it easy to understand the status of each circuit and controlling the power distribution board. It has the advantage that it is easy to attach to the monitoring surface, and changes in display and operating elements can be handled by changing only the wiring, and there is no need to review the layout or to make people look.

[Brief explanation of drawings]

Figure 1 shows a conventional switchboard display, a configuration diagram of control equipment, and Figure 2
The figure shows a single electric circuit diagram to which this invention is applied (
1) is the switchboard door, (20) is the breaker, (25) is the monitoring display board, (26) to (29) are the display elements, (30)
, (31) are operation elements. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Makoto Kuzuno - Figure 1 Figure 2 (d) Meeting (b) Figure 3 Figure 4

Claims (2)

[Claims] (1) The display elements and control circuit operating elements necessary for monitoring the switchboard are integrated into each single electric circuit connected to one breaker, and this integrated monitoring display board is attached to the monitoring surface of the switchboard. Switchboard equipment. (2) The switchboard device according to claim 1, wherein the display element includes an instruction display section of a measuring meter and a status display section of a circuit breaker and a protection relay.