RU1836769C - Three-phased voltage control device - Google Patents

Abstract

Usage: the device is used to control the presence of voltage of a three-phase network. SUMMARY OF THE INVENTION: the device comprises three tri-color indicators 1, 2, 3, each of which has light-emitting elements 4, 5, 6 of the first and 7. 8. 9 of the second color of the light emitting from a common light guide; there are three elements 10, 11. 12 current limiting and three terminals 13, 14, 15 for connecting to the phases of the controlled network. The execution of the light-emitting elements of the indicators by valves and the connection of the conclusions of the light-emitting elements 7, 8, 9 of the second color of the first 1, second 2 and third 3 indicators with the second. The outputs of the light-emitting elements 4, S, 6 of the first color of the light of the third, first and second indicators, respectively, allows increase the reliability of the control of the presence of three-phase voltages. 1 ill.

Description

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The invention relates to electrical engineering and can be used to control the presence of voltages of a three-phase network.

The purpose of the invention is to increase the reliability of the control of the presence of three-phase voltages ... .

The drawing shows a diagram of the device. .-. . . .

The device contains three. tricolor indicators 1, 2 and 3, each of which has light-emitting elements of the first 4, 5 and 6 and the second 7, 8 and 9 colors of the glow, emitting on a common light guide, three current limiting elements 10, 11, 12 and three terminals 13, 14; 15 for connecting to the phases of the monitored network, the first conclusions of the light-emitting elements 4, 5, b of the first color of the glow of all indicators connected to each other, the second conclusions of the light-emitting elements 4, 5, b of the first color of the glow of the first, second and third indicators through the first 10, second 11 and the third 12 current limiting elements are connected to the first 13, second 14 and third 15 conclusions for connecting to the phases of the controlled network, respectively, while one of the conclusions of the light-emitting elements 7, 8, 9 of the second color of the glow of all indicators with unified with the first conclusions of the light emitting elements 4, 5, 6 of the first color of the glow. The light-emitting elements 4, 5, 6 of the first and 7, 8, 9 of the second color of the luminescence of all indicators are made valve, and the other conclusions of the light-emitting elements 7, 8, 9 of the second color of the luminescence of the first 1, second 2 and third 3 indicators are connected to the second conclusions of the light-emitting elements 4, 5, b of the first color of the glow of the third 3, first 1 and second 2 indicators, respectively, while the light-emitting elements 4, 5, b of the first color of the glow of the first 1, second 2 and third 3 indicators are connected counter-parallel to the light-emitting elements 7, 8, 9 of the second color of the glow of the second 2, third 3 and first 1 indicators, respectively. In a zero wire network, the common connection point of all the light emitting elements 4 ... 9 is connected to the fourth terminal 16 of the device.

The device operates as follows.

The light-emitting elements 4,5 and 6 of the first color of the glow are selected, for example, of a yellow glow, and the light-emitting elements 7, 8 and 9 of the second, blue color of the glow, working with them on a common light guide. Therefore, after connecting the device to a controlled three-phase network through light-emitting elements

4-9, current pulses are transmitted, limited by elements 10, 11, 12, and as a result of mixing of the indicators 1, 2, and 3 of the blue and yellow radiation in the optical fibers, they shine

green light, which indicates the presence of all three voltages of the three-phase network. When phase A disappears, the luminescence of elements 4 and 8 ceases or significantly decreases, as a result of which the AC light guide

0 changes the green glow to blue, and the fiber AB - green to yellow. At the same time, the BC fiber continues to glow green, indicating the presence of a linear voltage of the BC, or, equivalently, phase voltages of 5 voltages B and C.

As valve light-emitting elements 4-9, for example, semiconductor LEDs, gas-discharge diode indicators, microminiature indication lamps with diodes in series, etc. can be used.

Claims (1)

As current limiting elements, resistors, capacitors, series circuits of a resistor and a two-anode zener diode, etc. can be used. Formula of the Invention A device for monitoring the presence of three-phase voltages containing three 0 three-color indicators, each of which includes light-emitting elements of the first and second colors of the glow emitting on a common light guide, three current limiting elements and three terminals for 5 connected to the phases of the monitored network, with the first terminals of the first light emitting elements of the first color of the glow of the indicators connected to each other, the second conclusions of the light emitting elements of the first color of the glow of the first, second and third indicators through the first, second and third current limiting elements connected to the first, second and third conclusions for connection to phases controlled 5 of the network, respectively, while some leads of light-emitting elements of the second color of the glow of all indicators are connected to the first conclusions of light-emitting elements of the first color of the glow, characterized in that, in order to increase the reliability of monitoring the presence of three-phase voltages, the light-emitting elements of the first and second colors the luminescence of all indicators is made by valves, while the other conclusions of the light-emitting elements of the second color, the luminescence of the first, second and third indicators are connected to the second conclusions of the light learning elements of the first color of the third glow. LePBOro and the second indicators of compliance In fact, in this case, the light-emitting elements parallel to the light-emitting elements of the first color of the first, second, second color of the second, third and third indicators are connected opposite the first indicators, respectively.