CN204287261U - A kind of easy mimic-disconnecting switch - Google Patents

Abstract

A simple analog circuit breaker relates to an analog circuit breaker, including a control power supply, a closing control circuit and a tripping control circuit connected to the control power supply, the normally closed contact HWJ1 of the closing position relay in the closing control circuit and the The coil HJ of the closing relay is connected in series, the normally closed contact TWJ1 of the tripping position relay in the trip control circuit is connected in series with the coil TJ of the tripping relay, the normally closed contact TJ1 of the tripping relay, the normally open contact HWJ2 of the parallel closing position relay and The normally open contact HJ2 of the closing relay and the coil HWJ of the closing position relay are connected in series in sequence, the normally closed contact HJ1 of the closing relay, the normally open contact TWJ2 of the trip position relay in parallel and the normally open contact TJ2 of the tripping relay The coils TWJ of the trip position relay are connected in series in sequence; the utility model can simulate the tripping and closing of the circuit breaker during the whole group test of the relay protection device, which can reduce the number of switching operations and avoid damage to the contacts of the high-voltage circuit breaker, which is beneficial to reliable operation of equipment.

Description

A Simple Simulated Circuit Breaker

【Technical field】

The utility model relates to a simulated circuit breaker, in particular to a simple simulated circuit breaker.

【Background technique】

It is known that when a newly installed circuit breaker is put into operation, the commissioning personnel need to inspect and debug the operation circuit, protection device and automatic device. At this time, the circuit breaker is often operated frequently; Opening and closing the circuit breaker, and the repeated opening and closing of the circuit breaker will cause damage to the contacts, shorten the service life of the circuit breaker, and easily burn the opening and closing coils, affecting the normal power supply after commissioning; when the circuit breaker is debugged, the circuit breaker must be Send someone to guard, and the guards must maintain unobstructed communication with the debugging personnel, so that the circuit breaker can be dealt with in time when there is an abnormality, so as to ensure the safety of personal equipment. Such frequent contacts will consume a lot of time and energy.

【Content of invention】

In order to overcome the deficiencies in the background technology, the utility model discloses a simple analog circuit breaker, which can simulate the jumping and closing of the circuit breaker, reduce the number of switching operations, avoid damage to the contacts of the high-voltage circuit breaker, and prolong the circuit breaker. The purpose of the service life of the device.

In order to realize the purpose of the invention, the utility model adopts the following technical solutions:

A simple analog circuit breaker, comprising a control power supply, a closing control circuit connected to the control power supply, a tripping control circuit, a closing control indicating circuit and a tripping control indicating circuit, in the closing control circuit, the closing position The normally closed contact HWJ1 of the relay is connected in series with the coil HJ of the closing relay; The normally open contact HWJ2 of the closing position relay is connected in series with the normally open contact HJ2 of the closing position relay and the coil HWJ of the closing position relay. The normally closed contact HJ1 of the closing position relay and the normally open contact of the parallel tripping position relay The point TWJ2 is connected in series with the normally open contact TJ2 of the trip relay and the coil TWJ of the trip position relay. , the trip indicator light LD is connected in series with the normally open contact TWJ2 of the trip position relay.

Due to the above-mentioned technical scheme, the utility model has the following beneficial effects:

1. The simulated circuit breaker of the utility model can simulate the jumping and closing of the circuit breaker during the whole group test of the relay protection device and the operation learning of the operating personnel, which can reduce the number of switching operations and avoid damage to the contacts of the high-voltage circuit breaker , prolong the service life of the circuit breaker, which is conducive to the reliable operation of the equipment.

2. When the utility model is operating the actual circuit breaker, some work related to the circuit breaker will be forced to stop, thus affecting the normal work of other staff. After using the simulated circuit breaker of the utility model, the actual circuit breaker will The device does not need to be opened and closed, and the work of other staff will not be affected.

【Description of drawings】

Fig. 1 is a schematic diagram of the utility model;

【Detailed ways】

The utility model can be explained in detail through the following examples, and the purpose of disclosing the utility model is to protect all technical improvements within the scope of the utility model.

The simple analog circuit breaker described in conjunction with accompanying drawing 1 includes a control power supply, a closing control circuit connected to the control power supply, a tripping control circuit, a closing control indicating circuit and a tripping control indicating circuit, and the closing control circuit Among them, the normally closed contact HWJ1 of the closing position relay is connected in series with the coil HJ of the closing relay. The contact TJ1, the normally open contact HWJ2 of the closing position relay in parallel, the normally open contact HJ2 of the closing relay, and the coil HWJ of the closing position relay are connected in series in sequence, the normally closed contact HJ1 of the closing relay, and the parallel tripping position The normally open contact TWJ2 of the relay is connected in series with the normally open contact TJ2 of the trip relay and the coil TWJ of the trip position relay. , In the trip control indication circuit, the trip reminder light LD is connected in series with the normally open contact TWJ2 of the trip position relay.

The simple analog circuit breaker described in this utility model is used. When in use, the control power supply is connected to a 220-volt DC power supply. When the switch is closed, the closing circuit is instantaneously charged with 110 volts of positive electricity, and the closing relay coil HJ acts to close the switch. The normally open contact HJ2 of the relay is closed, the closing position relay HWJ acts, the closing position relay normally closed contact HJ1 is disconnected, and the tripping position relay TWJ is prevented from acting; after the tripping position relay TWJ operates, the normally open contact HWJ2 of the tripping position relay Closed, HD charged, red light on; the normally open contact HWJ2 of the closing position relay is closed, the self-holding closing position relay HWJ is charged, the normally closed contact is disconnected after the closing position relay HWJ acts, and the closing relay HJ loses power , in line with the characteristics of the actual circuit breaker's own closing control circuit;

When tripping, the tripping circuit is instantly charged with 110 volts of positive electricity, the tripping relay TJ acts, the normally open contact TJ2 of the tripping relay closes, the tripping position relay TWJ acts, the normally closed contact TJ1 of the tripping relay opens, and the closing position relay HWJ Power off, the normally open contact HWJ2 of the closing position relay is powered off, HD is powered off, the red light is off, after the coil TWJ of the trip position relay is activated, the normally open contact TWJ2 of the trip position relay is closed, LD is charged, and the green light is on ;The normally open contact TWJ2 of the trip position relay is closed, and the self-holding trip position relay TWJ is always charged. After the trip position relay TWJ operates, the normally closed contact TWJ1 of the trip position relay is disconnected, and the coil TJ of the trip relay loses power, which is in line with the actual open circuit The characteristics of the tripping control loop of the device itself.

The unspecified part of the utility model is prior art.

Claims (1)

1. an easy mimic-disconnecting switch, comprise control power supply, the shutting-brake control loop be connected with control power supply, tripping operation control loop, shutting-brake control instruction loop and tripping operation control instruction loop, it is characterized in that: in described shutting-brake control loop, the normally closed contact HWJ1 of closing operation position relay connects with the coil HJ of closing relay, in described tripping operation control loop, the normally closed contact TWJ1 of tripping position relay connects with tripping relay coil TJ, the normally closed contact TJ1 of tripping relay, the normally opened contact HWJ2 of closing operation position relay in parallel and closing relay normally opened contact HJ2, the coil HWJ of closing operation position relay connects successively, the normally closed contact HJ1 of closing relay, the normally opened contact TWJ2 of the tripping position relay in parallel and normally opened contact TJ2 of tripping relay, the coil TWJ of tripping position relay connects successively, in shutting-brake control instruction loop, combined floodgate warning light HD connects with the normally opened contact HWJ2 of closing operation position relay, tripping operation controls in instruction loop, tripping operation warning light LD connects with the normally opened contact TWJ2 of tripping position relay.