JPH0140255Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a measurement panel used in power receiving and distribution equipment, and particularly to a measurement panel unit incorporating a current transformer for measuring instruments.

Conventional configuration and its problems Conventionally, as shown in Figures 1 and 2, an ammeter 2, a voltmeter 3, a fuse 4, and input/output wires for external circuits are connected to the measurement panel 1. A current transformer 6 for detecting the current of the secondary side main line 7 of the transformer 9 and communicating it to the ammeter 2 is separated from the measurement panel 1. , was attached to a power receiving and distribution equipment case 8 via a mounting bracket 8a separately from the measurement panel 1. In the figure, 10 is a switch. By the way, in the case of such a configuration, a special mounting bracket 8a is required for mounting the instrument current transformer 6, and the ammeter 2, voltmeter 3, and instrument current transformer 6 are separated from each other. As a result, each measurement circuit had to be wired separately and then connected to each other later, which had the disadvantage that the series of tasks could not be carried out smoothly.

Purpose of the invention An object of the invention is to provide a measurement panel unit that can eliminate the above-mentioned conventional drawbacks and improve the efficiency and reliability of wiring work for measurement circuits.

Structure of the invention In order to achieve this purpose, the present invention attaches an indicator to the front of a panel, bends one end of this panel, forms a slit in the bent part, and places a primary conductor at any position of this slit. To provide a measurement panel unit in which a current transformer for measuring instruments is fixed and measurement circuit equipment is assembled in one panel to improve the efficiency of wiring work.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 to 5. In Figures 3 and 4,
11 is a panel, and this panel 11 has an ammeter 12,
An instrument current transformer 16 having a voltmeter 13, a fuse 14 and a primary conductor 15 is assembled into a unit. That is, by connecting the ammeter 12 to the secondary terminal of the instrument current transformer 16 and connecting the voltmeter 13 to the primary conductor 15 of the instrument current transformer 16, all the wiring of the measurement circuit is routed inside the panel 11. The structure is such that it can be completed in one step. The panel 11 has an L-shaped bent portion 1 on one side as shown in FIG.
1a, and a panel 11 is attached to this bent portion.
A slit 22, which is slightly shorter than the width of the slit 22, is formed along one side. The ammeter 12, voltmeter 13, and fuse 14 are embedded and fixed in the front of this panel 11, and the instrument current transformer 16 is attached to the bent portion 11a through a slit 22 so that its position can be freely selected. It is being

The panel 11 with the indicator installed and the measurement circuit wiring completed as described above is shown in FIG.
Once installed in the power receiving and transforming equipment case 18, the secondary main line 17 of the transformer 19 is then connected to the instrument current transformer 16.
All wiring for the main and measurement circuits is completed by simply connecting to the primary conductor 15 of the main conductor 15. Incidentally, upon this connection, since the position of the instrument current transformer 16 can be arbitrarily selected along the slit 22, the main wiring to the molded circuit breaker 21 can be easily performed.

Effects of the invention According to the measurement panel unit of the invention, as is clear from the above explanation, since the indicating instrument and the instrument current transformer are all integrated into one panel, the measurement circuit can be wired at the back of the panel. The wiring work is now more efficient, and the unitization eliminates the need for input/output terminal blocks, reducing the number of connection points, improving wiring reliability, and improving current transformation for instruments. Since the position of the device can be freely selected, it is easy to connect the main wiring after it is installed in the power receiving and substation equipment case, which has great practical effects.

[Brief explanation of the drawing]

Figures 1 and 2 show a conventional example, Figure 1 is a single line diagram, Figure 2 shows the measurement panel installed in power receiving and distribution equipment, a is a front view, and b is a right side view. , Fig. 3 to Fig. 5 show an embodiment of the present invention, Fig. 3 is a single line diagram, and Fig. 4 shows a state in which the measurement panel unit is incorporated into the power receiving and distribution equipment.
is a front view, b is a right side view, Fig. 5 shows the measurement panel unit, a is a front view, b is a right side view, c
is a bottom view. 11 is a panel, 12 is an ammeter, 13 is a voltmeter,
14 is a fuse, 15 is a primary conductor, 16 is an instrument current transformer, 17 is a main line on the secondary side of a transformer, 18 is a power receiving and substation equipment case, 19 is a transformer, and 22 is a slit.

Claims (1)

[Scope of utility model registration request] An indicator is attached to the front of the panel, one end of the panel is bent, a slit is formed in the bent part, and an instrument current transformer with a primary conductor is fixed at any position of the slit. A measurement panel unit equipped with an instrument.