SU595821A1 - Circuit arrangement for leak protection of three-phase network with insulated neutral wire - Google Patents
Circuit arrangement for leak protection of three-phase network with insulated neutral wireInfo
- Publication number
- SU595821A1 SU595821A1 SU762415542A SU2415542A SU595821A1 SU 595821 A1 SU595821 A1 SU 595821A1 SU 762415542 A SU762415542 A SU 762415542A SU 2415542 A SU2415542 A SU 2415542A SU 595821 A1 SU595821 A1 SU 595821A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- circuit arrangement
- neutral wire
- leak protection
- phase network
- insulated neutral
- Prior art date
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
1one
Изобретсиие отноеите к облаети релейной заш,иты и предназначено дл защиты от утечек , ев заппых е однофазными замыкани ми па землю, в чаетноети, дл защиты человека от понаданн иод иапр жепне.The invention should be taken to the area of the relay, and it is designed to protect against leaks, with single-phase closures on the ground, in particular, to protect people from iodine resistance.
Извеетно уетройетво дл защиты от однофаз 1ых замыканий 1, содержащее нзмерительны .е нреобразователи тока и напр жени нулевой иоеледовательноети, реле направлени мощности и иеиолнительный орган. Однако указанное устройство имеет низкую чувствительность и быстродействие.An old one for protection against single phases of the first circuit 1, containing measuring current and voltage zero voltage converters, a power direction relay and an actuator. However, this device has a low sensitivity and speed.
Известно устройство дл защиты от утечек 2, работа которого основана на наложении в сети тока от иостороннего оперативного источника . Это устройство содержит источник оперативного напр жени , элемент сравнени , в качестве которого служит транзистор, эмиттер-базовый переход которого нрнсоединеи к донолнительному источнику напр жени , а база-коллекторный переход через усилитель- к исполнительному органу, и щунтирующий коидеиеатор. Увеличением емкости конденсатора , щунтирующего измерительную цепь в момент бросков тока в ней, вызванных нереходными процессами при коммутаци х ответвлений , можио повысить устойчивость аннаратуры против ложиых срабатываний. Однако ирн увелнченнн емкости указанных конденсаторов }величнваетс врем срабатывани заHUJTLI из-за у15сл 1чснн длительности зар да коидснсаторо и замедлени нарастани тока в из: ерительной цепи.A device for protection against leaks 2 is known, the operation of which is based on the application of current to a network from an external operational source. This device contains the source of the operating voltage, the comparison element, which serves as a transistor, the emitter-base transition of which is connected to the additional voltage source, and the base is the collector transition through the amplifier to the actuator, and a bypass co-selector. An increase in the capacitance of the capacitor that shunts the measuring circuit at the moment of current surges in it, caused by non-transitional processes during switching of branches, can increase the stability of the annularity against false alarms. However, the increase in the capacitance of the indicated capacitors} causes the response time to be due to HUJTLI because of the duration of the charging time and the slowing down of the current increase in the test circuit.
Целью нзобрете П вл етс увелнчение быстродействи и помехоустойчивости. Поставлеииа цель достигаетс тем, что в устpoiicTBO дополнительно введен источник напр жени нулевой иоследовательиости сети, иодключеипый встречио к источнику онорного напр жени .The purpose of the present invention, P, is to increase the speed and noise immunity. The goal is achieved by the fact that the zero-voltage source and the succession of the network, and the key to the source of on-line voltage, are additionally introduced into the deviceTiicTBO.
На чертеже представлена схема устройства защиты от утечек.The drawing shows a diagram of the device to protect against leaks.
Устройство содержит неточник оперативного папр женн 1, включенный между заземлением и сетью через элемент сравнеин , вынолпепный на транзнеторе 2, эмиттер-базоB )iii переход которого нодключеи к источнику оиориого (стабилизированного) нанр жени 3, а база-коллекторный нереход включен в измерительную цепь параллельно входу усилител 4. нагрузкой которого служнт иеиолнительный орган 5. Параллельно измерительной Fienn включен нунтирующий конденсатор 6. К источиику онориого напр жеин 3 доиолнительно присоединен источинк напр жени нулевой ноеледовательности 7. В качестве примера показано его выполнение в виде вторичной обмотки компенеатора 8 емкоетного тока с присое:1нпениым к ней выпр мителемThe device contains a non-current operative parachute 1, connected between the ground and the network through an element comparable to the transistor 2, emitter-basoB) iii the transition of which the keys to the source of stable (stabilized) array 3, and the base-collector non-junction are connected in parallel to the measuring circuit to the input of the amplifier 4. by the load of which the service and the additional unit 5. Parallel to the measuring Fienn is connected the pinning capacitor 6. To the source of voltage, voltage 3, a source of zero voltage is additionally connected law 7. As an example, its implementation is shown in the form of a secondary winding of the compensator 8 of capacitive current with a voltage: 1
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762415542A SU595821A1 (en) | 1976-10-27 | 1976-10-27 | Circuit arrangement for leak protection of three-phase network with insulated neutral wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762415542A SU595821A1 (en) | 1976-10-27 | 1976-10-27 | Circuit arrangement for leak protection of three-phase network with insulated neutral wire |
Publications (1)
Publication Number | Publication Date |
---|---|
SU595821A1 true SU595821A1 (en) | 1978-02-28 |
Family
ID=20681128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU762415542A SU595821A1 (en) | 1976-10-27 | 1976-10-27 | Circuit arrangement for leak protection of three-phase network with insulated neutral wire |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU595821A1 (en) |
-
1976
- 1976-10-27 SU SU762415542A patent/SU595821A1/en active
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