SU90913A1 - Ground Fault Alarm Scheme - Google Patents

Ground Fault Alarm Scheme

Info

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
Application number
SU419571A
Other languages
Russian (ru)
Inventor
А.Б. Эйдельштейн
Original Assignee
А.Б. Эйдельштейн
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 А.Б. Эйдельштейн filed Critical А.Б. Эйдельштейн
Priority to SU419571A priority Critical patent/SU90913A1/en
Application granted granted Critical
Publication of SU90913A1 publication Critical patent/SU90913A1/en

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  • 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.

SU419571A 1950-06-08 1950-06-08 Ground Fault Alarm Scheme SU90913A1 (en)

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)

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