SU888231A1

SU888231A1 - High-voltage switch

Info

Publication number: SU888231A1
Application number: SU792820226A
Authority: SU
Inventors: Михаил Ефимович Изосимов
Original assignee: За витель
Priority date: 1979-09-26
Filing date: 1979-09-26
Publication date: 1981-12-07

Description

II

Изобретение относитс к электротехнике и может быть использовано в ко1««Чутиоу1еадих устройствах. ,The invention relates to electrical engineering and can be used in co-mv Chutioui devices. ,

Известен высоковольтный выключатель , содержащий основную пару тактов, зашунтированную цепочкой из последовательно соединенных ограничител тока и встречно-параллельно включенных управл емых вентилей, трансформатор, вторичные обмотки которюго подключены к цеп м управлени вышеуказанных вентилей til.A high-voltage circuit breaker is known, which contains a main pair of cycles, is bridged by a chain of series-connected current limiters and counter-parallel-connected controlled gates, a transformer, the secondary windings of which are connected to the control circuits of the above-mentioned gates til.

Недостатком этого устройства вл етс низка надежность.A disadvantage of this device is low reliability.

Целью изобретени вл етс повышение надежности работы выключател .The aim of the invention is to increase the reliability of the switch.

Цель достигаетс тем, что известное устройство снабжено двум дополнительными парами контактов и резистором , причем перва дополнительна пара контактов одним полюсом соединена с одним полюсом главных контактов и одним полюсом второй дополнительной пары контактов, вторым полюсом с одним выводом резистора, чвторой вывод которого соединен с одним выводом первичной обиотки трансформатора, второй вывод которой подключен ко второму полюсу главных контактов через ограничитель тока, другой полюс второй дополнительной пары контактов соединен с общим выводом вышеуказанной цепочки из последовательно соединенных встречно-па- . The goal is achieved by the fact that the known device is equipped with two additional pairs of contacts and a resistor, with the first additional pair of contacts being connected by one pole to one pole of the main contacts and one pole of the second additional pair of contacts, the second pole with one terminal of the resistor, the output of which is connected to one terminal primary circuit of the transformer, the second terminal of which is connected to the second pole of the main contacts through the current limiter, the other pole of the second additional pair of contacts with it is uniform with the general conclusion of the above-stated chain from consistently connected counter-pa-.

to раллельно вк/тченных управл емых вентилей .to parallel on / controlled actuated valves.

На чертеже представлена схема выключател .The drawing shows the circuit breaker.

Высоковольтный выключатель содер15 жит главную пару контактов 1, первую, дополнительную пару контактов 2, вторую дополнительную пару контак . тов 3, цепочку из последовательно включенных ограничителей тока 4 и A high-voltage switch contains a main pair of contacts 1, the first, an additional pair of contacts 2, and a second additional pair of contacts. 3, a chain of series-connected current limiters 4 and

Claims

anti-parallel valves 5, a resistor 6 and a transformer 71 with primary and secondary windings 8 and 9. 3 One pole of three pairs of contacts is connected together / The second pole of a new pair of auxiliary contacts 2 through a resistor 6, the primary winding 8 of transformer 7 and a limiter current k is connected to the second pole of the main pair of contacts. The second pole of the second additional pair of contacts 3 is connected through a chain of anti-parallel-connected valves 5 to the current limiter C. The secondary windings of the transformer are connected to the control circuits of the above-mentioned valves. The switch operates as follows. If it is necessary to turn on the switch, the second pair of additional contacts is closed first, and the arc on the contacts does not occur as the valves 5 are locked. The second make the contacts of the first additional pair, while the arcs do not occur, since the current is limited by a high resistance circuit from the resistor 6, the primary winding 8 of the transformer 7 and the current limiter k. As soon as the current flows through the first winding 8 of the transformer, the 5 turns open immediately and the network current will flow through the first additional contacts. Then the main contacts are turned on. Ori This arc does not appear on them, since they are jumpered with open valves 5. After they are closed, the main ones are closed. contacts are opened at the beginning of the second, then the first pair of additional contacts. Turning off the switch in reverse order. First, the main contacts are opened, then the first additional pair of contacts and, lastly, the second additional pair of contacts 1 In this case, all three pairs of contacts are closed and open in a de-energized state, due to which the contacts are not subject to destruction by an arc. Using a & shade image allows you to increase the reliability of a high-voltage switch. Claims High-voltage switch holding a main pair of contacts, bridged by a chain of series-connected current limiter and counter-connected controlled valves, a transformer whose secondary windings are connected to the control circuits of the above-mentioned valves, characterized in that, in order to increase its reliability , it is equipped with two additional pairs of contacts and a resistor, and the first additional pair of contacts is connected by one pole with one pole of the main contacts Acts and one pole of the second additional pair of contacts, the second pole with one output of the resistor, the second output of which is connected to one output of the primary winding of the transformer, the second output of which is connected to the second pole of the main contacts through the current limiter, the other pole of the second additional contact pair is connected to the common output the aforementioned chain of serially connected anti-parallel-connected controlled gates. Information sources taken into account during the examination 1. A. Chunikhin Electrical apparatus. M., Energie, 1975, p. 399-00.