RU2009115430A

RU2009115430A - THREE-PHASE VOLTAGE SENSOR

Info

Publication number: RU2009115430A
Application number: RU2009115430/07A
Authority: RU
Inventors: Виктор Александрович Степанов (RU); Виктор Александрович Степанов
Original assignee: Виктор Александрович Степанов (RU); Виктор Александрович Степанов
Priority date: 2009-04-23
Filing date: 2009-04-23
Publication date: 2010-10-27
Also published as: RU2419940C2

Abstract

1. Датчик напряжений трехфазной сети, содержащий наружный или внутренний стабилизированный источник питания 1, микроконтроллер с выходом на блок управления и индикации, три резисторных делителя напряжения 3 и 4, 5 и 6, 7 и 8, первую группу входов 9, 10, 11, к которым подключены первые выводы делителей, а вторые выводы этих делителей соединены вместе и подключены к минусу 12 стабилизированного источника питания 1, отличающийся тем, что датчик напряжений снабжен дополнительно второй группой входов 13, 14, 15, к которым подключены первые выводы других делителей напряжения 16 и 17, 18 и 19, 20 и 21, вторые выводы которых также соединены вместе и подключены к минусу 12 стабилизированного источника питания, причем каждые два резистора всех делителей напряжения соединены непосредственно между собой, их общие точки подключены к отдельным аналоговым входам 22, 23, 24 и 25, 26, 27, а первая группа входов 9, 10, 11 через другие резисторы 28, 29, 30 дополнительно подключена к цифровым входам 31, 32, 33 микроконтроллера 2, выход которого с помощью блока гальванической развязки 34 и линии связи 35 соединен с блоком управления и индикации. ! 2. Датчик напряжений по п.1, отличающийся тем, что в случае, когда стабилизированный источник питания 1 расположен в одном корпусе с датчиком напряжений, он соединен с выходом трехфазного диодного моста 37, подключенного к первой группе входов через ограничительные элементы 38, 39, 40. 1. The voltage sensor of a three-phase network, containing an external or internal stabilized power source 1, a microcontroller with an output to the control and display unit, three resistor voltage dividers 3 and 4, 5 and 6, 7 and 8, the first group of inputs 9, 10, 11, to which the first outputs of the dividers are connected, and the second outputs of these dividers are connected together and connected to the minus 12 of the stabilized power supply 1, characterized in that the voltage sensor is additionally equipped with a second group of inputs 13, 14, 15, to which the first outputs of other cases are connected voltage diodes 16 and 17, 18 and 19, 20 and 21, the second terminals of which are also connected together and connected to the minus 12 of the stabilized power supply, and each two resistors of all voltage dividers are connected directly to each other, their common points are connected to separate analog inputs 22 , 23, 24 and 25, 26, 27, and the first group of inputs 9, 10, 11 through other resistors 28, 29, 30 is additionally connected to the digital inputs 31, 32, 33 of microcontroller 2, the output of which is via a galvanic isolation unit 34 and communication line 35 is connected to a control unit and an indicator tion. ! 2. The voltage sensor according to claim 1, characterized in that in the case when the stabilized power supply 1 is located in one housing with a voltage sensor, it is connected to the output of a three-phase diode bridge 37 connected to the first group of inputs through restrictive elements 38, 39, 40.

Claims

1. The voltage sensor of a three-phase network, containing an external or internal stabilized power source 1, a microcontroller with an output to the control and display unit, three resistor voltage dividers 3 and 4, 5 and 6, 7 and 8, the first group of inputs 9, 10, 11, to which the first outputs of the dividers are connected, and the second outputs of these dividers are connected together and connected to the minus 12 of the stabilized power supply 1, characterized in that the voltage sensor is additionally equipped with a second group of inputs 13, 14, 15, to which the first outputs of other cases are connected voltage diodes 16 and 17, 18 and 19, 20 and 21, the second terminals of which are also connected together and connected to the minus 12 of the stabilized power supply, and each two resistors of all voltage dividers are connected directly to each other, their common points are connected to separate analog inputs 22 , 23, 24 and 25, 26, 27, and the first group of inputs 9, 10, 11 through other resistors 28, 29, 30 is additionally connected to the digital inputs 31, 32, 33 of microcontroller 2, the output of which is via a galvanic isolation unit 34 and communication line 35 is connected to a control unit and an indicator tion.

2. The voltage sensor according to claim 1, characterized in that in the case when the stabilized power supply 1 is located in one housing with a voltage sensor, it is connected to the output of a three-phase diode bridge 37 connected to the first group of inputs through restrictive elements 38, 39, 40.