SU960993A1 - Three-phase current relay - Google Patents
Three-phase current relay Download PDFInfo
- Publication number
- SU960993A1 SU960993A1 SU803234941A SU3234941A SU960993A1 SU 960993 A1 SU960993 A1 SU 960993A1 SU 803234941 A SU803234941 A SU 803234941A SU 3234941 A SU3234941 A SU 3234941A SU 960993 A1 SU960993 A1 SU 960993A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- current relay
- phase current
- relay
- phase
- resistive
- Prior art date
Links
Description
(5) ТРЕХФАЗНОЕ РЕЛЕ ТОКА(5) THREE PHASE RELAY
1one
Изобретение относитс к электротехнике и предназначено дл использовани в токовых защитах электроустановок от коротких замыканий (к.з.The invention relates to electrical engineering and is intended for use in current protection of electrical installations against short circuits (K.C.
Известно реле тока, выполненное по принципу сравнени абсолютных значений двух переменных напр жений и содержащее, в частности, мостобой блок сравнени , к одной диагонали которого подключены шины с одним из сравниваемых напр жений, а к другой исполнительный элемент 1.A current relay is known, which is made according to the principle of comparing absolute values of two alternating voltages and contains, in particular, a bridge unit of comparison, to the same diagonal of which buses are connected to one of the compared voltages, and to another actuating element 1.
Однако при использовании такого устройства дл реализации-трехфазного реле тока с целью получени повышенной чувствительности к двухфазным и однофа.зным к.з. приходитс примен ть три его полных комплекта, что обуславливает значительную сложность конструкции в целом.However, when using such a device for the implementation of a three-phase current relay in order to obtain increased sensitivity to two-phase and single-phase short-circuits. three of its complete sets have to be used, which causes a considerable complexity of the design as a whole.
Наиболее близким техническим решением к изобретению вл етс трехфазное реле тока, содержащее три мостовых блокасравнени , в каждом изThe closest technical solution to the invention is a three-phase current relay containing three bridge units in each of
которых одни смежные плечи, св занные с соответствующим фазным вводом, выполнены резистивными, а другие ) . реЗистивно-диодными с общим дл всехwhich one adjacent shoulders, associated with the corresponding phase input, are made resistive, and others). resistive diode with common to all
мостов резистором в одном из плеч, 5 нуль-индикатор, выгтоЛненный в виде пол ризованного реле, обмотки которого включены в выходные диагонали всех блоков сравнени , а контакты - в цепь изменени установки исполнительного реле 2j.bridges with a resistor in one of the arms, a 5 null indicator generated in the form of a polarized relay, the windings of which are included in the output diagonals of all comparison units, and the contacts in the change circuit of the installation of the executive relay 2j.
10ten
Недостаток известного устройства св зан с наличием на выходе нуль-индикатора сигнала в трехфазном симметричном режиме. Это предопредел ет выбор повышенных токов срабатывани реле.A disadvantage of the known device is associated with the presence at the output of a null signal indicator in a three-phase symmetric mode. This predetermines the selection of high relay trip currents.
Целью изобретени вл етс повышение чувствительности подобного устройства.The aim of the invention is to increase the sensitivity of such a device.
2020
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU803234941A SU960993A1 (en) | 1980-12-17 | 1980-12-17 | Three-phase current relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU803234941A SU960993A1 (en) | 1980-12-17 | 1980-12-17 | Three-phase current relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU960993A1 true SU960993A1 (en) | 1982-09-23 |
Family
ID=20938318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU803234941A SU960993A1 (en) | 1980-12-17 | 1980-12-17 | Three-phase current relay |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU960993A1 (en) |
-
1980
- 1980-12-17 SU SU803234941A patent/SU960993A1/en active
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