SU113419A1 - Current protection zero sequence electrical installations - Google Patents
Current protection zero sequence electrical installationsInfo
- Publication number
- SU113419A1 SU113419A1 SU583504A SU583504A SU113419A1 SU 113419 A1 SU113419 A1 SU 113419A1 SU 583504 A SU583504 A SU 583504A SU 583504 A SU583504 A SU 583504A SU 113419 A1 SU113419 A1 SU 113419A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- current protection
- zero sequence
- electrical installations
- protection zero
- sequence electrical
- Prior art date
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
Дл отключени оборудовани при замыкании одной фазы на конструктивную часть электрических установок примен ют токовую защиту нулевой последовательности с кольцевым трансформатором тока, имеющим три первичных обмотки и одну вторичную обмотку, к которой подключают защитное реле.To disconnect equipment when closing one phase to the structural part of electrical installations, zero-sequence current protection is used with an annular current transformer having three primary windings and one secondary winding, to which a protective relay is connected.
Предлагаема защита более соверщенна по сравнению с известными устройствами, так как она позвол ет осуществл ть простым способом проверку занхиты перед включением электрической установки под напр жение .The proposed protection is more sophisticated than the known devices, since it allows a simple method to check the power supply before switching on the electrical installation.
Особенность это11 защиты заключаетс в том, что трансформатор тока снабжен дополнительной контрольной обмоткой, приключаемой через кнопку к траи1ч1ю)матору напр жени .The peculiarity of this protection is that the current transformer is provided with an additional control winding, which is driven through a button to the voltage source.
На чертеже изображена принципиальна электрическа схема предлагаемой защиты.The drawing shows a circuit diagram of the proposed protection.
В схеме зан ты применен кольцевой трансформатор Л который имеет три первичных оПмотки 2, вторич 1ую 3 и контро.чьиую .In the scheme, a ring transformer L is used, which has three primary windings 2, the secondary 1 and 3, and the secondary one.
Первичные обмочки 2 включаютс в рассечку трех фаз кабел ,The primary arms 2 are included in the cutting of the three phases of the cable,
питающего защищаемый объект -электрической энергией. Вторична supplying the protected object with electrical energy. Secondary
обмотка 3 присоединена к обмочке электромагнитного реле ,3 с однойwinding 3 is attached to a collar of an electromagnetic relay, 3 with one
парой норма.льно открытых контактов, которые злуыкакгг ; ;1корогко a pair of norm.no open contacts, which are evil; ; 1short
цепь отключающей катущки пускового аппарата 6.the circuit of the tripping coil of the starting device 6.
Контрольна обмотка 4 позвол ет осуществл ть конг1Ч).-Ьиук1 iij4 верку работы реле перед включением оборудовани под напр жение. Напр жение на обмотку 4 подаетс от трансформатора н;1чрчжени 1 7 через балластное соп ротивление 5, потенциометр.. и ..ьную кнопку 10.The control winding 4 allows cong1Ch) .- bj1 iij4 test the operation of the relay before switching on the equipment for voltage. The voltage on the winding 4 is supplied from the transformer n; 1 time 1 7 through the ballast resistance 5, potentiometer .. and .. button 10.
Токова защита нулевой последовательности электрических чстаие.вок с применением кольцевого трансформатора тока, снабженного трем первичными обмотками и одной вторичной, питающем реле-,, . ч а Предмет изобретени Current protection of zero-sequence electrical chstaiy.vk using a ring current transformer, equipped with three primary windings and one secondary, supplying the relay-,,. The subject of the invention
Ле 113419Le 113419
1Ц ..i Я .; ;( -j-(...j- , С J 1C ..i I.; ; (-j - (... j-, С J
..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU583504A SU113419A1 (en) | 1957-09-21 | 1957-09-21 | Current protection zero sequence electrical installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU583504A SU113419A1 (en) | 1957-09-21 | 1957-09-21 | Current protection zero sequence electrical installations |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782687169A Addition SU815826A2 (en) | 1978-11-22 | 1978-11-22 | Device for protective disconnection of electric equipment in three-phase ac network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU113419A1 true SU113419A1 (en) | 1957-11-30 |
Family
ID=48385886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU583504A SU113419A1 (en) | 1957-09-21 | 1957-09-21 | Current protection zero sequence electrical installations |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU113419A1 (en) |
-
1957
- 1957-09-21 SU SU583504A patent/SU113419A1/en active
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