JPS58201509A - Switchboard - 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 power distribution board in which the equipment within the board is C-knitted for each function to streamline wiring.

Conventionally, the switchboard for this woodcutter was constructed as shown in Figures 1 and 1 and 2. Figure 1 shows the measurement of a single high and low voltage circuit.
FIG. 2 is a block diagram showing the circuit configuration in FIG. 1 as a specific equipment configuration.

In the figure, (1) is the current needle, (2) is the power needle, and (3)
Vi dynamometer needle (4) is voltage needle, (5) is electric energy needle, (
6) is a signal light, (7) is an operating switch, (8) is a ground fault relay, (9) is an overflow relay, (10) is a breaker, (
11) is a transformer (PT), (12) Fii flow transformer (C'
r ), (13) is the electric phase current transformer (zcT), (14) is the control terminal block, (15) is the monitoring panel (door) surface of the closed switchboard,
(16) If main bus bar, (17) is power supply side branch conductor, [
18) is a load side branch conductor.

In the switchboard configured as described above, the transformer (11
Current needle (1), electric energy (2), power factor It-i
(13), the voltage needle (4) and the electricity consumption needle (5) are manually operated to display the status of the single main circuit with resistance #J, and at the same time the voltage and current are transferred to the overcurrent relay (9), The earth fault relay (8) is also manually powered, and when the value reaches an abnormal value, each protective relay displays its operating status, and a contact signal is transmitted to the #IjT device (10) and the breaker (10) ) is tripped.

On the other hand, a contact signal is sent to the breaker (10) by the operation switch (7), so that the breaker (10) r! It is opened and closed and its status is displayed on the signal light (6).

Each of these measuring instruments, control instruments, and relays has a function of displaying status, indicators, etc., and a detection driving function.

Since the measurement, control, and maintenance system of the conventional power distribution board is configured as described above, each device must be connected with electric wires according to the necessary devices for each related circuit. In addition, the monitoring panel (door) surface (15) of the closed switchboard has drawbacks such as the need to drill and install holes according to the shape and shape of the necessary equipment. This was done in order to eliminate the drawbacks, and when the equipment inside the panel was divided into several units according to function, the wiring between each unit and other equipment was made using multi-core wires and connectors, for example, to simplify the wiring. The object of the present invention is to provide a power distribution board that can reduce the number of installed parts by simultaneously integrating a large number of measurement, control, and protection devices into a small number of units.

Hereinafter, a switchboard according to an embodiment of the present invention will be explained based on FIG. 3. In the figure, a breaker (10), a transformer (11), a current transformer (12), a zero-phase current transformer (13), a control panel (14), a monitoring panel (15), and a main bus bar (16) ,
Power supply side branch conductor (17) and load side branch conductor (18)
is similar to the conventional one in FIGS. 1 and 2. (19) inputs signals from the transformer (11) and current transformer (12) and calculates them, calculates the values necessary for each measurement at once, and shuts off if the calculated value becomes an abnormal value. ! (10) is an arithmetic unit integrated with an arithmetic element that outputs a trip signal to the circuit breaker (10); Display that displays each at once! ! (21) is both of the above units) (19), (20) Dark and arithmetic unit (
19), transformer (11), current transformer (12), and breaker @ (10), a wiring unit that integrates the wiring elements that collectively conduct the dark wiring, (22) f″i multicore electric wire , (23) are connectors.

Next, an embodiment of the present invention configured as described above will be described in detail.

Monitoring panels (doors) of closed switchboards are used to monitor the measured values of conventional measuring instruments and the parts that show them, the operation switches of control equipment, the status display of circuit breakers, the operation display of protective relays, etc. 15) All items that need to be displayed on the screen are digitized and summarized as one display, one unit (19). In addition, by manually detecting the magnitude of the two-table output voltage and current of Current Transformer II (12) and Transformer (11), etc., and calculating these, it is necessary to measure power, power factor, electric energy, etc. At the same time, if the value becomes an abnormal value, it outputs a trip signal to the circuit breaker (10) to protect the main circuit.
) and the two missing outputs from the current transformer (12) and transformer (11).
) are manually input to the display unit (2o), and the operation signals and calculations from the display unit (20) are performed.
It consists of three units: 6, x = t (19), (2
o) Connect multi-core wires ( 22), and the connector (23) is used for wiring. In the above example, each unit (19), (20), (21) and other equipment were connected using a multi-core wire (22) and a connector (23), but a single-core wire and a terminal were used. stand or optical fiber, light 7
It is also possible to use a combination of an eyeper and electric wire.

In addition, in the embodiment, an example was shown in which the application was applied to a single main circuit, but multiple circuits were applied to three units (19), (20), (21),
It is possible to perform multiple processing in 41, and the same effect can be achieved.

As described above, according to the present invention, the signals from the means for detecting voltage and current are sold, the signals are calculated, and the values required for 6 total 613 are calculated at once, and the above calculated values are calculated. A calculation element that outputs a trip signal to the breaker if an abnormal value occurs, a display element that collectively displays each measurement value calculated by the above calculation element and the status of the breaker, and a link between the above two elements. and a wiring element that performs wiring between the arithmetic element, the means, and the breaker, respectively, thereby reducing the number of parts to be installed on the panel and simplifying the wiring. I can do it.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the conventional equipment configuration for measurement, control, and protection relay equipment for a single high/low voltage main circuit.
FIG. 3 is a block diagram showing a specific unit structure according to an embodiment of the present invention. In the figure, (19) is the calculation unit), (20) is the display unit, (21) I/I wiring unit, (22)
(23) is a multi-core wire, and (23) is a connector. Note that the same reference numerals in the drawings indicate the same or similar parts. Agent Shin Kuzuno - Figure 1 Figure 2 Figure 3 Mr. Commissioner of the Japan Patent Office 1. Display of the incident Special application in 1973? -JI42sT No. 2
, Name of the invention Switchboard 3, Relationship to the case of the person making the amendment Patent applicant address 2-3 Marunouchi, Chiyoda-ku, Tokyo
Name (601) Mitsubishi Electric Corporation Representative Hitoshi Katayama 4, Agent address 2-2-3-6 Marunouchi 2-chome, Chiyoda-ku, Tokyo Detailed description of the invention and brief drawings in the specification subject to amendment Explanation column 6, contents of amendment (1) In the 8th line of page 2 of the specification, ``(2) is an electric phase current transformer.''
Correct the statement to "Qa is a zero-phase current transformer." (2) In the 14th line of the second page of the same page, the text "Electric energy (2)" should be corrected to "Ik power needle (2)." (3) In the 14th line of page 2 of the same page, the words "power factor meter (2)" should be corrected to "power factor meter (3)." (4) In the 15th line of page 2 above, the words "each measurement and settlement instrument" should be corrected to "each measurement and accumulation instrument". (5) 1 on page 4, lines 9, 14, and 18, and on page 6, lines 15, 16, 17, and 19.
``-09J'' is corrected to ``4''. (6) Same as above, page 4, line 18 and page 6, line 18.
Correct gJJ to ``α groan''. (7) In the 9th line of page 5 of the same document, the word "transformer" is corrected to "transformer." (8) On page 7, line 18 of the same page, replace “σ9j” with “(
1)”. (9) Same as above @T7 page 18, “(1)” is r
Correct to QI J.

Claims (1)

[Claims] The signals from the means for detecting voltage and current are manually calculated, and the values necessary for each measurement are calculated all at once.
A calculation element that outputs a tripping signal to the device, a display of each measurement value calculated by the calculation element, and a state of the above-mentioned interrupter.
Wiring that performs the dark wiring between the display element that performs the I display and the both elements, and between the calculation element, the means, and the circuit breaker, respectively! ! 1
A switchboard featuring the following features: