SU90913A1 - Ground Fault Alarm Scheme - Google Patents
Ground Fault Alarm SchemeInfo
- Publication number
- SU90913A1 SU90913A1 SU419571A SU419571A SU90913A1 SU 90913 A1 SU90913 A1 SU 90913A1 SU 419571 A SU419571 A SU 419571A SU 419571 A SU419571 A SU 419571A SU 90913 A1 SU90913 A1 SU 90913A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- current
- ground fault
- relay
- fault alarm
- alarm scheme
- Prior art date
Links
Landscapes
- Protection Of Generators And Motors (AREA)
- Control Of Eletrric Generators (AREA)
Description
Предметом изобретени вл етс схема силнализации (защиты) о замыкании йа землю в обмотке статора синхронных генераторов.The subject of the invention is a circuit for the force (protection) of the ground fault in the stator winding of synchronous generators.
Пр е;и му щест1в оп р е дл ага е мойP ee; and mushchestv d op e for aga my
схемы состоит в ее высокой чувствительности , потому что така защита практически полностью охв,аты.вает всю обмотку статора.of the circuit consists in its high sensitivity, because such protection is almost completely scattered throughout the entire stator winding.
Защита генераторов от однофазных замыканий на землю в о.бмотке статора и на выводах в р де случаев осун1,ествл етс с помощью тр1ансфорМатор1а напр жени , устанавливаемого в нейтрали генератора . Защита выполн етс с дейотвием на сигнал. Однако чувствительность такой защиты не ве.лика и незащищенными остаютс до 15% лВИтков обмотки статора.The protection of generators against single-phase earth faults in the stator winding and at the terminals in a series of cases, is determined by means of a voltage transformer installed in the generator neutral. Protection is carried out with a signal act. However, the sensitivity of such protection is not great and up to 15% of the stator windings remain unprotected.
Примен токовые реле, кратность термической устойчивости которых раина 10, можно защищать До 90% витко1В.The use of current relays, the multiplicity of thermal stability of which is 10, can be protected up to 90% of the coil.
В насто щем изобретении при помощи двух токовых реле тина ЭТ уд,аетс защитить ерактически все 100% витков о-бмотки статор а.In the present invention, with the help of two current relays, voltage ET beats, it is possible to protect virtually all 100% of the turns of the stator actor.
Схема сиг.нализации показана на прилагаемом чертеже, где: /-нулева точка генератора; 2-трансформатор налр Жени с ниащим напр жением 100 в.; 3 - токовоеThe signalization diagram is shown on the attached drawing, where: / is the zero point of the generator; Zhenya's 2-nal transformer with a lean voltage of 100 in .; 3 - current
pi.K чина ЭТ-511; 4-токовое релс Типа ЭТ-513; 5 и 6-со противлени .pi.K order ET-511; 4-current type Rel-ET-513; 5 and 6 with opposition.
.Примененное в схеме токовое реле типа ЭТ-511 имеет один нормально разоМКнутый контакт, пределы регулировани реле 0,05- 0,1 а, длительный ток 0,3 а, сопротивление обмотки реле 10 ом.. The ET-511 type current relay used in the circuit has one normally open contact, the relay control limits are 0.05-0.1 a, a continuous current 0.3 a, the resistance of the relay winding is 10 ohms.
Токозо-е реле типа ЭТ-513 имеет две пары контактов, пределы ре1у .лировани 0,5-1а, длительный ток 4а, сопротивление обмотки реле 0,1 ом.The current relay of the ET-513 type has two pairs of contacts, a limit of 0.5-1 a reset, a continuous current of 4a, and a relay resistance of 0.1 ohm.
Сопротивление 6 равно 10 ом., сопротивление 5 включает в себе сопротивлещие соединительных проводов и равно 20 ом.Resistance 6 is 10 ohms., Resistance 5 includes resistive connecting wires and is 20 ohms.
Действие сигнализации происхо .iHT следующим обр,азом: при напр женИИ 2,5в на вторичных зажимах т1)ансформатора через сопротивление 5 пройдет ток, равный:The action of the alarm occurs .iHT with the following mod, az: at a voltage of 2.5V at the secondary terminals t1) of the unformer, a current of 5 passes through the resistance equal to:
-2(), ™ тушке токового реле . соответственно равен 0,05 а. Реле 3 ср,аблтывйет и подает сигнал. Если на р жение поднимаетс выше 12,5 в, то через реле 4 пойдет ток больше тока трогани реле, и оно, (зазомкнув одншм своим контактом цепь реле 3, |Други,м контактом будет продолжать давать снглал. -2 (), ™ carcass current relay. respectively, equal to 0.05 a. Relay 3 cf, abltyvyt and gives a signal. If the voltage rises above 12.5 V, then the relay 4 will receive a current greater than the current moving the relay, and it (closing the relay circuit 3 with one contact, | Other, will continue to give contact.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU419571A SU90913A1 (en) | 1950-06-08 | 1950-06-08 | Ground Fault Alarm Scheme |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU419571A SU90913A1 (en) | 1950-06-08 | 1950-06-08 | Ground Fault Alarm Scheme |
Publications (1)
Publication Number | Publication Date |
---|---|
SU90913A1 true SU90913A1 (en) | 1950-11-30 |
Family
ID=48366988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU419571A SU90913A1 (en) | 1950-06-08 | 1950-06-08 | Ground Fault Alarm Scheme |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU90913A1 (en) |
-
1950
- 1950-06-08 SU SU419571A patent/SU90913A1/en active
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