RU93026903A - LIMITER OF INTERNAL VOLTAGE - Google Patents

LIMITER OF INTERNAL VOLTAGE

Info

Publication number
RU93026903A
RU93026903A RU93026903/07A RU93026903A RU93026903A RU 93026903 A RU93026903 A RU 93026903A RU 93026903/07 A RU93026903/07 A RU 93026903/07A RU 93026903 A RU93026903 A RU 93026903A RU 93026903 A RU93026903 A RU 93026903A
Authority
RU
Russia
Prior art keywords
resistors
stars
zinc
independent
oxide
Prior art date
Application number
RU93026903/07A
Other languages
Russian (ru)
Other versions
RU2085002C1 (en
Inventor
Г.Г. Трусов
Л.Е. Старкова
Original Assignee
Вологодский Политехнический Институт
Filing date
Publication date
Application filed by Вологодский Политехнический Институт filed Critical Вологодский Политехнический Институт
Priority to RU93026903A priority Critical patent/RU2085002C1/en
Priority claimed from RU93026903A external-priority patent/RU2085002C1/en
Publication of RU93026903A publication Critical patent/RU93026903A/en
Application granted granted Critical
Publication of RU2085002C1 publication Critical patent/RU2085002C1/en

Links

Claims (1)

Ограничитель внутренних перенапряжений относится к электроэнергетике и предназначен для защиты от внутренних перенапряжений трехфазных электрических сетей с изолированной нейтралью. Изобретение обеспечивает снижение количества оксидно-цинковых резисторов, повышение надежности устройства и снижение тепловых нагрузок на резисторы. Для этого устройство защиты от перенапряжений выполнено в виде двух независимых звезд, каждая из которых содержит две группы оксидно-цинковых резисторов, выбираемых на пробивное напряжение 0,6 от линейного напряжения сети. Первая группа резисторов подключается одним выводом в фазу сети, а другим образует общую точку звезды, к которой подключается резистор второй группы, вторым выводом соединенный с землей. Для получения эффекта поляризации в каждую из независимых звезд включены три последовательных диода.Internal overvoltage suppressor refers to electric power industry and is intended for protection against internal overvoltages of three-phase electrical networks with insulated neutral. The invention provides a reduction in the number of oxide-zinc resistors, increasing the reliability of the device and reducing thermal loads on the resistors. For this, the overvoltage protection device is made in the form of two independent stars, each of which contains two groups of oxide-zinc resistors chosen for a breakdown voltage of 0.6 of the line voltage of the network. The first group of resistors is connected by one output to the network phase, and the other forms a common point of the star, to which the second group resistor is connected, the second output is connected to ground. To obtain the polarization effect, three consecutive diodes are included in each of the independent stars.
RU93026903A 1993-05-31 1993-05-31 Limiter of internal overvoltages RU2085002C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU93026903A RU2085002C1 (en) 1993-05-31 1993-05-31 Limiter of internal overvoltages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU93026903A RU2085002C1 (en) 1993-05-31 1993-05-31 Limiter of internal overvoltages

Publications (2)

Publication Number Publication Date
RU93026903A true RU93026903A (en) 1995-07-20
RU2085002C1 RU2085002C1 (en) 1997-07-20

Family

ID=20141725

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93026903A RU2085002C1 (en) 1993-05-31 1993-05-31 Limiter of internal overvoltages

Country Status (1)

Country Link
RU (1) RU2085002C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090067101A1 (en) * 2007-09-06 2009-03-12 Siemens Power Generation, Inc. Method and System for Limiting a Current in an Alternating Current Generator
US11355925B2 (en) * 2018-01-30 2022-06-07 Hitachi Energy Switzerland Ag System design solution for DC grid cost reduction and risk minimization

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