SU898534A1

SU898534A1 - Device for indicating fuse state

Info

Publication number: SU898534A1
Application number: SU802908701A
Authority: SU
Inventors: Георгий Викторович Вершин; Владимир Павлович Гуревич; Евгений Саулович Иофа; Вениамин Михайлович Морозов; Борис Георгиевич Сиротин
Original assignee: Предприятие П/Я Р-6397
Priority date: 1980-04-11
Filing date: 1980-04-11
Publication date: 1982-01-15

Description

II

Изобретение относитс к система контрол работы электрических устройств пассивной защиты, в частности, к устройствам дл указани состо ни предохранителей, установленных в цеп х питани потребителей.The invention relates to a system for monitoring the operation of electric passive protection devices, in particular, to devices for indicating the status of fuses installed in a consumer power supply circuit.

Известно устройство дл - указани состо ни предохранителей, содержащее искатель и датчики состо ни предохранителей l.A device for indicating the fuse status is known, comprising a searcher and fuse status sensors l.

Недостатки - сложность и соответственно невысока надежность.Disadvantages - the complexity and correspondingly low reliability.

Наиболее близким по технической сущности и достигаемому результату к изобретению вл етс устройство дл указани состо ни предохранителей , содержащее переключатели и датчики состо ни предохранителей в виде реле максимального тока, подключенные к предохранител м через контакты переключател ,The closest in technical essence and the achieved result to the invention is a device for indicating the state of the fuses, comprising switches and sensors of the state of the fuses in the form of an overcurrent relay connected to the fuses via the switch contacts

Недостатком этого устройства вл етс невысока надежность, обусловленна сложностью и отсутствием посто нного контрол исправности предохранителей .The disadvantage of this device is low reliability, due to the complexity and lack of continuous monitoring of the health of the fuses.

Цель изобретени - повьешение надежности устройства дл указани состо ни предохранителей.The purpose of the invention is to increase the reliability of the device for indicating the state of the fuses.

Поставленна цель достигаетс тем, что в устройстве дл указани состо ни предохранителей, содержащем переключатель и датчики состо ни предохранителей , включенные параллельно The goal is achieved by the fact that in a device for indicating the state of the fuses, comprising a switch and sensors of the state of the fuses, connected in parallel

10 предохранител м через контакты переключател ,. последний выполнен с количеством направлений по числу контролируемых предохранителей и с количеством положений на одно больше числа 10 fuses through switch contacts,. the latter is made with the number of directions in the number of controlled fuses and with the number of positions one more than the number

Claims

ts of the monitored fuses, where the fixed contacts of the switch of all positions, except those whose number is one more than the number of the corresponding monitored fuse, are connected to one of the fuses, and the movable ones are connected via state sensors made in series of light-connected ones. diode. and resistor, to other conclusions of the corresponding fuses. The drawing shows a schematic of the device for indicating the state of the fuses. The diagram contains a switch 1, made with the number of directions for the number of monitored fuses 2, and with the number of computations one more than the number of monitored fuses. Fixed contacts of the switch positions except for those one is greater than the number of the corresponding monitored fuse, connected to the fuse terminals connected to the power source, and the moving contacts of the switch 1 through The state sensors in the form of series-connected LEDs 8–13 and resistors are connected to the terminals of fuses 2–7 with a load of 20. The device operates as follows. In the initial state of the switch 1 is installed in the first position and the transducer is connected with using it in parallel to a controlled preservative m 2-7. When any monitored fuse blows, for example, along a circuit: minus power bus –– fuse 5 load 20 – resistor 16 –– LED 10 –– moving switch contact –– –– fixed contact of the first position –plus switch uiHHga switch –– on LED 10, a voltage is applied and it lights up , sig malid .. about blown fuse A. Since the fuse blows either due to a short circuit in the load circuit or | .3 due to a sharp reduction of the INSULATION, then for SSPrO: - Le; -;:, excluding galvanic connection through sensor sos Neither various consumers connected with fuses 2-7 to the common power source, switch 1 is set to the fourth position, thereby providing the isolation of the power supply circuits of the two consumers from the emergency circuit. The invention allows, by simple means, to continuously monitor a large number of fuses, while not allowing galvanic communication of consumers to the power source when the corresponding fuse is burned. Claims An apparatus for indicating the status of fuses, comprising a switch and fuse condition sensors connected in parallel to fuses through switch contacts, characterized in that, in order to increase reliability, the switch is made with a number of directions according to the number of monitored fuses and with a number of positions one is greater than the number of fuses to be monitored, with the fixed contacts of the switch of all positions, except those whose number is one more than the number of co sponds controlled fuse, are connected to one terminal of the fuse, and movable - by state sensors made in the form of serially connected LEDs and resistors, corresponding to different conclusions fuses. Sources of information taken into account during the examination 1. USSR author's certificate number 55032, class, And 01 And 85/30, 1938.

2. USSR author's certificate number 522528, cl. And 01 H 85/30, 197 (prototype).

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