RU1808164C - Device for protection of three-phase electric installation against break of phase - Google Patents
Device for protection of three-phase electric installation against break of phaseInfo
- Publication number
- RU1808164C RU1808164C SU4845003A RU1808164C RU 1808164 C RU1808164 C RU 1808164C SU 4845003 A SU4845003 A SU 4845003A RU 1808164 C RU1808164 C RU 1808164C
- Authority
- RU
- Russia
- Prior art keywords
- phase
- contacts
- terminal
- series
- protection
- Prior art date
Links
- 238000009434 installation Methods 0.000 title 1
- 238000010616 electrical installation Methods 0.000 claims abstract description 8
- 239000007858 starting material Substances 0.000 claims description 7
- 235000014676 Phragmites communis Nutrition 0.000 abstract 3
- 230000008034 disappearance Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Motor And Converter Starters (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Устройство предназначено дл защиты трехфазной электроустановки от пропадани одной из фаз питающей сети. Сущность изобретени заключена в том, что три маг- нитоуправл емых контакта (герконы) с замыкающими контактами соединены последовательно и подключены параллельно кнопке Пуск, при этом каждый геркон находитс в магнитном поле своей фазы, а интенсивность магнитного пол подбираетс так, чтобы при прохождении тока в фазе через ноль, геркон не успевал разомкнуть свои контакты. 1 ил.The device is intended to protect a three-phase electrical installation from the disappearance of one of the phases of the supply network. The essence of the invention lies in the fact that three magnetically controlled contacts (reed switches) with make contacts are connected in series and connected in parallel with the Start button, with each reed switch being in the magnetic field of its phase, and the magnetic field intensity is selected so that when current passes through phase through zero, the reed switch did not have time to open its contacts. 1 ill.
Description
-ч--h-
ЈЈ
Изобретение относитс к электротехнике и может быть использовано преимущест- венно дл соединенной в звезду или треугольник обмотки трехфазного асинхронного электродвигател .The invention relates to electrical engineering and can be used mainly for a winding of a three-phase asynchronous electric motor connected to a star or delta.
Целью изобретени вл етс расширение функциональных возможностей электроустановок .The aim of the invention is to expand the functionality of electrical installations.
На чертеже представлена принципиальна схема устройства.The drawing shows a schematic diagram of a device.
Устройство дл защиты трехфазной электроустановки от обрыва фаз содержит магнитный пускатель 2 с силовыми контактами 5. предназначенными дл включени последовательно в фазные провода электроустановки 1. Один зажим катушки пускател соединен с клеммой дл соединени с Одной из фаз сети, а другой зажим через последовательно соединенные контактыA device for protecting a three-phase electrical installation from phase failure contains a magnetic starter 2 with power contacts 5. designed to be connected in series to the phase wires of electrical installation 1. One terminal of the starter coil is connected to a terminal to connect to one of the mains phases, and the other terminal is connected through series-connected contacts
кнопок Пуск 4 и Стоп 3 соединен с клеммой дл соединени с другой фазой сети. Устройство Содержит также три магнитоуп- равл емых контакта 6,7,8 с замыкающими контактами,,которые соединены последовательно и подключены параллельно кнопке Пуск.The Start 4 and Stop 3 buttons are connected to a terminal to connect to another phase of the network. The device also contains three magnetically operated contacts 6,7,8 with make contacts, which are connected in series and connected in parallel with the Start button.
Устройство работает следующим образом .The device operates as follows.
При наличии номинального напр жени на всех фазах после нажати пусковой кнопки 4 подаетс напр жение на катушку 2 магнитного пускател , который своими силовыми контактами 5 подает напр жение на электроустановку 1 (электродвигатель). Г При этом при замыкании контактов 5 пускател за счет пускового тока электроустановки замыкаютс магнитоуправл е00If there is a rated voltage in all phases, after pressing the start button 4, the voltage is applied to the coil 2 of the magnetic starter, which, through its power contacts 5, supplies voltage to the electrical installation 1 (electric motor). D In this case, when the contacts 5 of the starter are closed due to the starting current of the electrical installation, the magneto-control e00 closes
оabout
00 CS00 cs
ьb
Сл)C)
мые контакты 6, 7, 8 и шунтируют кнопку Пуск,my contacts 6, 7, 8 and bypass the start button,
При обрыве токопровод щей жилы одной из фаз или отсутствии фазы источника питани электромагнитный контакт разрывает цепь катушки пускател и отключает электродвигатель.In the event of a break in the conductive core of one of the phases or in the absence of the phase of the power source, the electromagnetic contact breaks the starter coil circuit and turns off the electric motor.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4845003 RU1808164C (en) | 1990-04-24 | 1990-04-24 | Device for protection of three-phase electric installation against break of phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4845003 RU1808164C (en) | 1990-04-24 | 1990-04-24 | Device for protection of three-phase electric installation against break of phase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU1808164C true RU1808164C (en) | 1993-04-07 |
Family
ID=21524130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU4845003 RU1808164C (en) | 1990-04-24 | 1990-04-24 | Device for protection of three-phase electric installation against break of phase |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU1808164C (en) |
-
1990
- 1990-04-24 RU SU4845003 patent/RU1808164C/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР М 595824, кл. Н 02 Н 7/08, 1976. Авторское свидетельство СССР № 758364, кл. Н 02 Н 7/08, 1976. * |
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