RU94015200A - Earth-fault protection of ac electric circuits - Google Patents

Earth-fault protection of ac electric circuits

Info

Publication number
RU94015200A
RU94015200A RU94015200/07A RU94015200A RU94015200A RU 94015200 A RU94015200 A RU 94015200A RU 94015200/07 A RU94015200/07 A RU 94015200/07A RU 94015200 A RU94015200 A RU 94015200A RU 94015200 A RU94015200 A RU 94015200A
Authority
RU
Russia
Prior art keywords
actuator
remote control
magnetic switch
electromechanical contact
fault protection
Prior art date
Application number
RU94015200/07A
Other languages
Russian (ru)
Inventor
А.А. Сошников
О.К. Никольский
Original Assignee
Алтайский государственный технический университет им.И.И.Ползунова
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Алтайский государственный технический университет им.И.И.Ползунова filed Critical Алтайский государственный технический университет им.И.И.Ползунова
Priority to RU94015200/07A priority Critical patent/RU94015200A/en
Publication of RU94015200A publication Critical patent/RU94015200A/en

Links

Abstract

FIELD: electric networks earth-fault protection devices. SUBSTANCE: connected to output of zero-sequence current transformer is magnetic switch used as amplifier and installed for engagement with actuator. Placed between magnetic switch and actuator is remote control unit with electromechanical contact placed in series with two current-limiting resistors. Electromechanical contact is installed to control semiconductor switch by means of connection to electric circuit. Semiconductor switch can be built around semistor or thyristor and connected to actuator. EFFECT: enhanced efficiency of operation owing to provision of remote control of actuator; use as actuator can be one or several automatic circuit breakers with independent releases, practically without increase in power consumption.

Claims (1)

Использование: в электрических сетях переменного тока для защиты от замыканий на земле. Сущность изобретения: к выходу трансформатора тока нулевой последовательности подключен магнитный выключатель, используемый в качестве усилителя и установленный с возможностью воздействия на исполнительный элемент. Между магнитным выключателем и исполнительным элементом установлен блок дистанционного управления, содержащий электромеханический контакт, включенный последовательно с двумя токоограничивающими резисторами. Электромеханический контакт установлен с возможностью управления полупроводниковым ключом посредством подключения к электрической сети. Полупроводниковый ключ может быть выполнен на симисторе или на тиристоре и подключен к исполнительному элементу. Технический результат: повышение эффективности работы путем обеспечения дистанционного управления исполнительным элементом, в качестве которого может использоваться как один, так и несколько автоматических выключателей с независимыми расцепителями, практически без увеличения потребления энергии.Usage: in electrical AC networks to protect against earth faults. The essence of the invention: to the output of the zero-sequence current transformer is connected a magnetic switch used as an amplifier and installed with the possibility of influencing the actuator. A remote control unit is installed between the magnetic switch and the actuating element, comprising an electromechanical contact connected in series with two current-limiting resistors. The electromechanical contact is installed with the ability to control a semiconductor key by connecting to an electrical network. The semiconductor key can be made on the triac or on the thyristor and connected to the actuator. EFFECT: increased work efficiency by providing remote control of the actuating element, which can be used as one or several circuit breakers with independent releases, with almost no increase in energy consumption.
RU94015200/07A 1994-03-26 1994-03-26 Earth-fault protection of ac electric circuits RU94015200A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94015200/07A RU94015200A (en) 1994-03-26 1994-03-26 Earth-fault protection of ac electric circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94015200/07A RU94015200A (en) 1994-03-26 1994-03-26 Earth-fault protection of ac electric circuits

Publications (1)

Publication Number Publication Date
RU94015200A true RU94015200A (en) 1996-04-10

Family

ID=48447528

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94015200/07A RU94015200A (en) 1994-03-26 1994-03-26 Earth-fault protection of ac electric circuits

Country Status (1)

Country Link
RU (1) RU94015200A (en)

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