SU1390694A1 - Device for protecting three-phase electric motor against voltage failure in any of power supply line phases - Google Patents

Device for protecting three-phase electric motor against voltage failure in any of power supply line phases Download PDF

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Publication number
SU1390694A1
SU1390694A1 SU600656892A SU656892A SU1390694A1 SU 1390694 A1 SU1390694 A1 SU 1390694A1 SU 600656892 A SU600656892 A SU 600656892A SU 656892 A SU656892 A SU 656892A SU 1390694 A1 SU1390694 A1 SU 1390694A1
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SU
USSR - Soviet Union
Prior art keywords
phase
phases
electric motor
power supply
protecting
Prior art date
Application number
SU600656892A
Other languages
Russian (ru)
Inventor
Василий Николаевич Фокин
Original Assignee
В.Н.Фокин
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 В.Н.Фокин filed Critical В.Н.Фокин
Priority to SU600656892A priority Critical patent/SU1390694A1/en
Application granted granted Critical
Publication of SU1390694A1 publication Critical patent/SU1390694A1/en

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Abstract

Изобретение относитс  к электротехнике , в частности к релейной защите электродвигател . Цель изобретени  - обеспечение бесперебойной работы двигател . При обрыве любой из трех фаз сети питани  двигатель продолжает бесперебойную работу, так как обмотка электродвигател  получает питание от другой фазы через группу конденсаторов и двух замыкающих контактов токовых реле, установленных в двух других фазах сети питани . 1 ил.This invention relates to electrical engineering, in particular, to motor protection. The purpose of the invention is to ensure the uninterrupted operation of the engine. If any of the three phases of the mains supply fails, the motor continues uninterrupted operation, as the motor winding receives power from the other phase through a group of capacitors and two make contacts of the current relays installed in the other two phases of the mains supply. 1 il.

Description

Изобретение относитс  к электротехнике в частности, к релейной защите электродвигател .This invention relates to electrical engineering, in particular, to motor protection.

Целью изобретеш 1   вл етс  обеспечение бесперебойной работы двига- .тел .The purpose of the inventor 1 is to ensure uninterrupted operation of the engine.

На чертеже приведена пришципиаль- на  электрическа  схема устройства.The drawing shows a schematic diagram of the device.

Устройство содержит подключенные к фазам 1-3 сети питани  токовые рел 4-6 с замыкающими контактами 7-9 соответственнор группу конденсаторов 10-12 и электродвигатель 13,The device contains current relays 4-6 connected to phases 1-3 of the supply network with closing contacts 7-9, respectively, a group of capacitors 10-12 and an electric motor 13,

Устройство работает следующим образом.The device works as follows.

При наличии напр жени , приложенного к фазам 1-3, в обмотках токо- Bbix реле 4-6 течет ток. Токовые реле 4-6 срабатывают, замыкают свои замыкающие контакты 7-9 соответственно и подключают группу конденсаторов 10- 12 к сети. При обрыве одной из фаз сети питани , например фазы 1, токо- вое реле 4 обесточиваетс , его замыкающий контакт 7 размыкаетс , отключа  группу конденсаторов от фазы 2 сети и питани . Обмотка электродвигател  получает n iTanne от фазы 3 сети через группу конденсаторов, таким образом электродвигатель 13, продолжа  бесперебойную работу, автоматичеки переводитс  в режим конденсаторного двигател ,If there is a voltage applied to phases 1–3, a current flows in the windings of the current Bbix relay 4–6. Current relays 4-6 work, close their closing contacts 7-9, respectively, and connect a group of capacitors 10-12 to the network. If one of the phases of the power supply is disconnected, for example, phase 1, the current relay 4 de-energizes, its closing contact 7 opens, disconnecting a group of capacitors from phase 2 of the power supply and supply. The motor winding receives n iTanne from phase 3 of the network through a group of capacitors, so that the electric motor 13, continuing uninterrupted operation, is automatically switched to the capacitor motor mode,

OO

5five

0 5 0 с0 5 0 s

При по влении исчезнувшего напр жени  токовое реле 4 обтекаетс  током , замыкает свой контакт 7, и двигатель работает в трехфазном режиме.When the disappearing voltage appears, the current relay 4 flows around the current, closes its contact 7, and the motor runs in three-phase mode.

Claims (1)

Устройство позвол ет обеспечить бесперебойную работу электродвигател  при обрыве любой из трех фаз сети питани . Формула изобретени The device allows uninterrupted operation of the electric motor in the event of a break in any of the three phases of the supply network. Invention Formula Устройство дл  защиты трехфазного асинхронного электродвигател  от исчезновени  напр жени  в одной из фаз сети питани , содержащее три токовых реле с замьпсающими контактами, установленных в фазах сети питани , о т- личающе ес  тем, что, с целью обеспечени  бесперебойной работы двигател , оно дополнительно снабжено группой конденсаторов, соединенных в звезду или треугольник с трем  выводами , подключенными к фазам сети между обмотками электродвигател  и реле, при этом замыкающий контакт токового реле первой фазы включен между второй фазой сети питани  и первым выводом г руппы конденсаторов, замыкающий контакт токового реле второй фазы включен между вторым выводом группы конденсаторов и третьей фазой сети питани , замыкающий контакт токового реле третьей фазы включен между третьим выводом группы конденсаторов и первой фазой питани  электро- . двигател  .A device for protection of a three-phase asynchronous electric motor against the disappearance of voltage in one of the phases of the power network, containing three current relays with closing contacts installed in the phases of the power network, in addition, in order to ensure uninterrupted operation of the engine, it is additionally equipped a group of capacitors connected in a star or delta with three terminals connected to the mains phases between the windings of the electric motor and the relay, while the closing contact of the current relay of the first phase is connected between the second the phase of the power supply network and the first output of the capacitor group; the closing contact of the second phase current relay is connected between the second output of the capacitor group and the third phase of the power supply network; the closing contact of the third phase current relay is connected between the third output of the capacitor group and the first phase of the power supply. engine II JJ LZJLzj ИAND IIII IIII 10ten HhHh //// 1212
SU600656892A 1960-02-29 1960-02-29 Device for protecting three-phase electric motor against voltage failure in any of power supply line phases SU1390694A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU600656892A SU1390694A1 (en) 1960-02-29 1960-02-29 Device for protecting three-phase electric motor against voltage failure in any of power supply line phases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU600656892A SU1390694A1 (en) 1960-02-29 1960-02-29 Device for protecting three-phase electric motor against voltage failure in any of power supply line phases

Related Child Applications (2)

Application Number Title Priority Date Filing Date
SU782598754A Addition SU722786A2 (en) 1978-03-30 1978-03-30 Automotive vehicle washing unit
SU782626329A Addition SU722787A2 (en) 1978-06-09 1978-06-09 Automotive vehicle washing unit

Publications (1)

Publication Number Publication Date
SU1390694A1 true SU1390694A1 (en) 1988-04-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU600656892A SU1390694A1 (en) 1960-02-29 1960-02-29 Device for protecting three-phase electric motor against voltage failure in any of power supply line phases

Country Status (1)

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SU (1) SU1390694A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Патент Германии Р 287609, кл. Н 02 Н 7/08, 1896. Патент Германии № 574860, кл. Н 02 Н 7/08, 1933. *

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