CN2580659Y

CN2580659Y - Reset circuit for automatic switching device of AC power

Info

Publication number: CN2580659Y
Application number: CN 02257978
Authority: CN
Inventors: 唐伟
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2002-10-22
Filing date: 2002-10-22
Publication date: 2003-10-15
Anticipated expiration: 2012-10-22

Abstract

The utility model relates to a reset circuit for an automatic switching device of AC power supplies, which belongs to the technical field of the low-voltage distribution. The utility model comprises make position switches S1, S2, a button switch S3 and a relay coil K1, wherein, one end of the make position switches S1, S2 after connected in parallel is connected with a control power supply Uc, the other end is connected with one end of the relay coil K1 and one end of the two normally open contacts K1-1, K1-2 of the relay coil K1, the other end of the relay coil K1 is connected with one end of the button switch S3, the other end of the button switch S3 is grounded, and the other ends of the two normally open contacts K1-1, K1-2 are respectively connected with start-up circuits of a common power supply and a standby power supply of the automatic switching device of the power supplies. The utility model has the advantages of high automatization, convenient operation and stable and reliable work.

Description

The reset circuit that a kind of AC power automatic switching control equipment is used

The utility model relates to a kind of reset circuit, and particularly the reset circuit used of AC power automatic switching control equipment belongs to the low-voltage distribution technical field.

At present, the AC power automatic switching control equipment that low-voltage distribution on the market is used, when just after the circuit breaker of powered operation is threaded off because of overload or fault, recover operate as normal as need, need withdraw from " automatically " state earlier, manual or electronic stoppage circuit breaker is resetted, could enter " automatically " state then once more, recover operate as normal.The defective of its existence is: automaticity is lower, uses operation inconvenience, in case operating personnel have neglected a step, just can affect electrical network adversely and normally move, thereby fit into unnecessary loss.

The purpose of this utility model is that a kind of automaticity height, easy and simple to handle, reset circuit that stable and reliable operation AC power automatic switching control equipment is used will be provided.

The purpose of this utility model is achieved like this, the reset circuit that a kind of AC power automatic switching control equipment is used, it comprises moving mould assembly position switch S1, S2, push-button switch S3, relay K 1, moving mould assembly position switch S1, termination control power supply Uc after the S2 parallel connection, the other end and relay coil K1 one end and two normally opened contact K1-1, the end of K1-2 connects, the other end of relay coil K1 is connected with the end of push-button switch S3, the other end ground connection of push-button switch S3, two normally opened contact K1-1, the other end of K1-2 is connected to the power supply commonly used of automatic power-supply switch and the start-up circuit of stand-by power supply respectively.

The utility model is owing to adopted above reset circuit, after operating circuit breaker is threaded off because of overload or short trouble, switch S 3 only needs to push the button, the AC power automatic switching control equipment is detained immediately again and recovered operate as normal, thus this reset circuit automaticity height, easy and simple to handle, working stability is reliable.

Below in conjunction with accompanying drawing the utility model is further described below.

Accompanying drawing is an electrical schematic diagram of the present utility model.

After the circuit breaker in power supply commonly used that is moving or the stand-by power supply circuit was threaded off because of overload or short trouble, corresponding switch knob was in the dropout position, and moving mould assembly position switch S1 or S2 pressurized are connected circuit.When needs AC power automatic switching control equipment drops into operate as normal again, after clicking push-button switch S3, circuit turn-on, relay coil K1 gets electric adhesive, its normally opened contact K1-1 or K1-2 closure make the start-up circuit work of power supply commonly used or stand-by power supply, start electronic switching mechanism, as long as any No. one three-phase alternating-current supply has electricity, just can change the powered operation state that enters automatically.

Claims

1, the reset circuit that a kind of AC power automatic switching control equipment is used, it is characterized in that it comprises moving mould assembly position switch S1, S2, push-button switch S3, relay K 1, moving mould assembly position switch S1, termination control power supply Uc after the S2 parallel connection, the other end and relay coil K1 one end and two normally opened contact K1-1, the end of K1-2 connects, the other end of relay coil K1 is connected with the end of push-button switch S3, the other end ground connection of push-button switch S3, two normally opened contact K1-1, the other end of K1-2 is connected to the power supply commonly used of automatic power-supply switch and the start-up circuit of stand-by power supply respectively.