KR20020009150A - The manufacturing technology for single unit voltmeter - Google Patents

Abstract

PURPOSE: A switch-integrated voltmeter is provided to reduce a fabrication cost considerably, and to improve the quality of a finished product. CONSTITUTION: An indication part(1) indicates a hydroelectricity voltage of selected lines. R-S, S-T and R-T inter-line voltage display lamps(2, 3, 4) indicate the selected inter-lines. If a switch(5) is pushed, the R-S inter-line voltage display lamp(2) is turned on and an R-S inter-line voltage is displayed through the indication part(1). If a switch(6) is pushed, the lamp(2) is turned off so as to be switched into the lamp(3), so that a voltage is displayed through the indication part(1). If a switch(7) is pushed, the lamp(3) is turned off so as to be switched into the lamp(4), and a measured value of the indication part(1) becomes an R-T inter-line voltage.

Description

Switch-integrated voltmeter manufacturing technology {THE MANUFACTURING TECHNOLOGY FOR SINGLE UNIT VOLTMETER}

The present invention relates to a switch-integrated voltmeter for checking the equality of the incoming voltage and the line voltage of a machine or device, and in the prior art, after selecting the voltmeter and the mounting position of the switch to the steel control panel, and then through the punching process By wiring according to the fixed wiring diagram, there has been a huge waste of time and physically.

The present invention is to reduce the manufacturing cost of the device by significantly reducing the manufacturing cost of the device by displaying the corresponding line voltage while the lamp between the corresponding line is turned on the left side of the front side of the voltmeter to solve the above problems Through the purpose of the invention to increase the competitiveness.

In order to achieve the above object, the present invention multiplies the secondary voltage (normally 110 or 220 volts) of the transformer applied through the transformer with the ratio of the transformer to the display unit, and the command of the control unit composed of the line selection switch made of soft buttons. According to this, the line indication lamp in the upper left of the front of the indicator turns on, and the voltage between the corresponding lines can be measured.

The electromagnetic plate thus constructed may be mounted in a dedicated case to block noise, and the wiring may be attached to a control panel required by processing a terminal block or a connector.

Fig. 1 shows the external appearance of a voltmeter and a voltage switching switch for checking a power receiving voltage for operating an industrial room or a building of a machine room or for controlling a test apparatus, and Fig. 2 is a connection diagram required at that time.

Figure 3 is a structural diagram of a switch-integrated voltmeter used in the present invention, Figure 4 is a connection diagram applied when using the product of the present invention.

(Description of the main parts of the drawing)

1) Indicator 2) R-S line voltage display lamp 3) S-T line voltage display lamp 4) R-T line voltage

Indicator lamp 5) R-S line voltage selection switch 6) S-T line voltage selection switch 7) R-T line

Voltage selection position 8) Alternating operation setting switch 9) Transformer secondary voltage selection switch

Hereinafter, described in detail by the accompanying drawings as follows.

As shown in the detailed diagram of Fig. 3, (1) indicates the power receiving voltage between the selected lines, and the value is the product of the transformer ratio and the secondary voltage. However, when less than 300 volts, the transformer is omitted.

(2) (3) (4) indicates the selected line, (5) (6) (7) is the line selection switch and (8) is a cyclic measurement function setting switch. When is turned on, the voltage between RS is displayed on the indicator (1). When the switch (6) is pressed, the lamp (2) is turned off, the lamp is switched to the lamp (3), and the voltage between S- is output to the indicator (1).

In addition, when the switch 7 is pressed, the lamp 3 is turned off and transferred to the lamp 4, and at the same time, the measured value of the indicator 1 becomes the voltage between R-T.

If the switch 8 is pressed once, the voltage is instructed while alternately cycling between the lines for a specified time within 10 seconds, so that each voltage can be measured conveniently. In addition, the dip switch 9 may be used to set a voltage pattern, and if necessary, a conversion function may be added to draw an analog or communication thrust and transmit it to an upper or lower device.

As described above, the present invention can be conveniently and simply measured alone when measuring the received power voltage during the operation of an industrial machine or an experimental device. Also, since the selective operation switch and the voltage indicating unit are integrated, the space can be used widely. Wiring is completed in one step, which can greatly contribute to cost reduction.

Claims (5)

Integration technology of voltmeter and voltage changeover switch The technology for automatically transferring to the most recently selected line of claim 1 The technique of claim 1, which provides a circulation measurement function between lines. The technology of setting a voltage pattern according to claim 1 The technique of claim 1 and 2, wherein the transmission output function is provided.