CN204809664U

CN204809664U - Low pressure stationary cabinet

Info

Publication number: CN204809664U
Application number: CN201520524966.5U
Authority: CN
Inventors: 侯保芹; 张丽; 张校梅
Original assignee: Shandong Xinrui Electric Co Ltd
Current assignee: Shandong Xinrui Electric Co Ltd
Priority date: 2015-07-20
Filing date: 2015-07-20
Publication date: 2015-11-25
Anticipated expiration: 2025-07-20

Abstract

Low pressure stationary cabinet, including main circuit and parallel circuit, characterized by the main circuit include knife -like switch QS, knife -like switch QS's inlet wire end and three phase current line connection, the parallel circuit including connecting in parallel at first parallel circuit, second parallel circuit, third parallel circuit, the fourth parallel circuit of knife -like switch QS leading -out terminal, the beneficial effects of the utility model are that be provided with under -voltage coil on low pressure stationary cabinet's the circuit breaker when voltage reduction to a time time that definite value or power supply disappear suddenly, the coil loses magnetism and results in the axle in the middle of the coil to return the striking tripping operation, when returning to normal when supplying power, needs artificial intervention could continue the combined floodgate, has avoided the emergence of some accidents, residual current transformer uses with the cooperation of conflagration controller can judge malfunction, fire alarm state, normal operating conditions, accomplishes the control to electric fire, completion control, the integrated treatment of reporting to the police.

Description

Low pressure fixes cabinet

Technical field

The utility model relates to electrical control cabinet technical field, is more particularly that a kind of low pressure fixes cabinet.

Background technology

Low pressure fix cabinet be mainly used in the power consumers such as power plant, transformer station, industrial and mining enterprises as power, illumination and controller switching equipment electric energy conversion, distribute and the use of control, but also having that pitch capability is high, good stability, combined and instant, the feature such as practical are used widely; There will be voltage drop in using during peak of power consumption and cause power consumption equipment cisco unity malfunction, even cause damage, when occurring having a power failure, owing to having a power failure, some power consumption equipments or machinery are in opening, when powering unexpected recovery normal condition, can cause some unnecessary loss or accidents, and existing low pressure fixes the function that cabinet does not have fire hazard monitoring, can better not adapt in various occasion.

Summary of the invention

For solving the problem, the utility model devises a kind of after voltage is reduced to certain value or power-off, power supply could be continued after needing manual operation when again recovering normal power supply, and there is fire hazard monitoring, the low pressure of warning function fixes cabinet, and its technical scheme is: described low pressure fixes cabinet, comprises main circuit and parallel circuit, it is characterized in that described main circuit comprises knife switch QS, the end of incoming cables of described knife switch QS is connected with three-phase power line, described parallel circuit comprises the first parallel circuit being connected in parallel on knife switch QS leading-out terminal, second parallel circuit, 3rd parallel circuit, 4th parallel circuit, the first described parallel circuit, second parallel circuit, 3rd parallel circuit, 4th parallel circuit is connected to circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, circuit breaker Q F4, described circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, circuit breaker Q F4 is provided with under-voltage coil, time when voltage drop suddenly disappears to certain value or power supply, coil loss of excitation and cause the axle in the middle of coil return clash into tripping operation, when service restoration is normal, need manual intervention could continue to close a floodgate, avoid the generation of some accidents, circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, three lines of the leading-out terminal extraction of circuit breaker Q F4 are in series with Current Transmit, described circuit breaker Q F1 respectively, circuit breaker Q F2, circuit breaker Q F3, one in three lines that circuit breaker Q F4 draws also is in series with the residual current transformer be connected with fire control device respectively, residual current transformer protection act setting current can from mA level to A level, there is quite high operating sensitivity, be exclusively used in the collection of residual current, with fire control device with the use of can failure judgement state, fire alarm state, normal operating conditions, completes the monitoring to electrical fire, completes monitoring, the integrated treatment of reporting to the police.

The beneficial effects of the utility model be low pressure fix cabinet circuit breaker on be provided with under-voltage coil when voltage drop suddenly disappears to certain value or power supply time, coil loss of excitation and cause the axle in the middle of coil return clash into tripping operation, when service restoration is normal, need manual intervention could continue to close a floodgate, avoid the generation of some accidents; Residual current transformer and fire control device, with the use of can failure judgement state, fire alarm state, normal operating conditions, complete the monitoring to electrical fire, the integrated treatment of complete monitoring, reporting to the police.

accompanying drawing illustrates:

Accompanying drawing 1 is structural representation of the present utility model, in accompanying drawing 1:

1. main circuit, 2. the first parallel circuit, 3. the second parallel circuit, 4. the 3rd parallel circuit, 5. the 4th parallel circuit, 6. residual current transformer.

embodiment:

1 pair of the utility model describes in further detail by reference to the accompanying drawings, so that the public grasps implementation method of the present utility model better, the utility model specific embodiment is: described low pressure is fixed cabinet and comprised main circuit 1 and parallel circuit, described main circuit 1 comprises knife switch QS, and the end of incoming cables of described knife switch QS is connected with three-phase power line, described parallel circuit comprises the first parallel circuit 2 being connected in parallel on knife switch QS leading-out terminal, second parallel circuit 3, 3rd parallel circuit 4, 4th parallel circuit 5, the first described parallel circuit 2, second parallel circuit 3, 3rd parallel circuit 4, 4th parallel circuit 5 is connected to circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, circuit breaker Q F4, described circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, circuit breaker Q F4 is provided with under-voltage coil, time when voltage drop suddenly disappears to certain value or power supply, coil loss of excitation and cause the axle in the middle of coil return clash into tripping operation, when service restoration is normal, need manual intervention could continue to close a floodgate, avoid the generation of some accidents, circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, three lines of the leading-out terminal extraction of circuit breaker Q F4 are in series with Current Transmit, described circuit breaker Q F1 respectively, circuit breaker Q F2, circuit breaker Q F3, one in three lines that circuit breaker Q F4 draws also is in series with the residual current transformer 6 be connected with fire control device respectively, residual current transformer protection act setting current can from mA level to A level, there is quite high operating sensitivity, be exclusively used in the collection of residual current, with fire control device with the use of can failure judgement state, fire alarm state, normal operating conditions, completes the monitoring to electrical fire, completes monitoring, the integrated treatment of reporting to the police.

Claims

1. low pressure fixes cabinet, comprises main circuit (1) and parallel circuit, and it is characterized in that described main circuit (1) comprises knife switch QS, the end of incoming cables of described knife switch QS is connected with three-phase power line, described parallel circuit comprises the first parallel circuit (2) being connected in parallel on knife switch QS leading-out terminal, second parallel circuit (3), 3rd parallel circuit (4), 4th parallel circuit (5), described the first parallel circuit (2), second parallel circuit (3), 3rd parallel circuit (4), 4th parallel circuit (5) is connected to circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, circuit breaker Q F4, described circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, circuit breaker Q F4 is provided with under-voltage coil, circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, three lines of the leading-out terminal extraction of circuit breaker Q F4 are in series with Current Transmit respectively, described circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, one in three lines that circuit breaker Q F4 draws also is in series with the residual current transformer (6) be connected with fire control device respectively.