CN211089222U

CN211089222U - Dual-power switching control circuit

Info

Publication number: CN211089222U
Application number: CN201922371975.6U
Authority: CN
Inventors: 刘锦梅; 王新国; 陈华俊
Original assignee: Shanghai Outong Electric Co ltd
Current assignee: Shanghai Outong Electric Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-07-24
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a dual power supply switching control circuit, which comprises a first ACB power supply, a second ACB power supply, a first voltage relay, a second voltage relay, a first air circuit breaker, a second air circuit breaker and a switching circuit of the ACB power supply; a first voltage relay is connected in parallel to the first ACB power supply; a second voltage relay is connected in parallel to the second ACB power supply; a contact of the first voltage relay and a contact of the second voltage relay are respectively connected into a switching circuit of the ACB power supply, and the switching between the first air circuit breaker and the second air circuit breaker is controlled; the first ACB power supply and the second ACB power supply are automatically switched by using the switching circuit of the ACB power supply, so that the situation that one of the two power supplies is used for standby and the other power supply has a problem can be realized, and the power can still be supplied to the main circuit.

Description

Dual-power switching control circuit

Technical Field

The utility model relates to a power control circuit especially relates to a dual supply switching control circuit.

Background

When the existing ACB power supply is used for charging the main circuit, the mode of using the spare power supply is usually adopted by mainly using a single-path control mode, however, the standby power supply is generally switched by manual operation of personnel, and the manual switching can cause great influence in some places, such as important places of hospital operating rooms and wafer manufacturing, and therefore automatic switching is needed by double power supplies and is used for controlling the automatic switching of the double power supplies.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a according to the weak point of above-mentioned prior art, realized a dual supply switching control circuit, characterized in that, including the switching circuit of first ACB power, second ACB power, first voltage relay, second voltage relay, first air circuit breaker, second air circuit breaker and ACB power; the first voltage relay is connected in parallel to the first ACB power supply; the second voltage relay is connected in parallel with the second ACB power supply; and the contact of the first voltage relay and the contact of the second voltage relay are respectively connected into a switching circuit of the ACB power supply, and the switching between the first air circuit breaker and the second air circuit breaker is controlled.

Further, the switching circuit of the ACB power supply further comprises a first control power supply, a second control power supply, an intermediate relay, a conversion switch, a first signal red light, a second signal red light, a first signal green light and a second signal green light; a coil of an intermediate relay is connected to a first control power supply, and a first normally closed contact of the intermediate relay and a first normally open contact of the intermediate relay are connected to a 1 st endpoint of a conversion switch, a 5 th endpoint of the conversion switch, a 3 rd endpoint of the conversion switch and a 7 th endpoint of the conversion switch in an interlocking manner between the first control power supply and a second control power supply; the energy storage loop of the first air circuit breaker and the energy storage loop of the second air circuit breaker are connected to a first control power supply; the 2 nd terminal of the conversion switch is connected to the first normally closed contact of the second voltage relay; a first closing button is connected in parallel to a first normally closed contact of the second voltage relay; the outlet end of the first normally closed contact of the second voltage relay is connected to the inlet end of the first normally closed contact of the second air circuit breaker; the outlet end of the first normally closed contact of the second air circuit breaker is connected to the inlet end of the first normally closed contact of the first air circuit breaker; the outlet end of a first normally closed contact of the first air circuit breaker is connected to the inlet end of a closing coil of the first air circuit breaker, and the outlet end of the closing coil of the first air circuit breaker is connected to the zero lines of the first control power supply and the second control power supply; the 2 nd terminal of the conversion switch is connected to the wire inlet end of the normally closed contact of the first voltage relay; a switching-off button is connected in parallel to the normally closed contact of the first voltage relay; the outlet end of a first normally open contact of the first voltage relay is connected to the inlet end of the brake separating coil of the first air circuit breaker; the outlet end of the opening coil of the first air circuit breaker is connected to the zero line of the first control power supply and the zero line of the second control power supply; two ends of a second normally open contact of the first air circuit breaker are respectively connected with a first control power supply, a second control power supply and a first signal red light; two ends of a second normally closed contact of the first air circuit breaker are respectively connected with a first control power supply, a second control power supply and a first signal green light;

the 4 th terminal of the conversion switch is connected to the normally closed contact of the first voltage relay; a second closing button is connected in parallel to a second normally closed contact of the first voltage relay; the outlet end of the second normally closed contact of the first voltage relay is connected to the inlet end of the third normally closed contact of the first air circuit breaker; the outlet end of the third normally closed contact of the second air circuit breaker is connected to the inlet end of the first normally closed contact of the second air circuit breaker; the outlet end of the first normally closed contact of the second air circuit breaker is connected to the inlet end of the closing coil of the second air circuit breaker, and the outlet end of the closing coil of the second air circuit breaker is connected to the zero line of the first control power supply and the zero line of the second control power supply; the 4 th end point of the conversion switch is connected to the wire inlet end of the second normally closed contact of the second voltage relay; a second switch-off button is connected in parallel to a second normally closed contact of the second voltage relay; the outlet end of the first normally open contact of the second voltage relay is connected to the inlet end of the brake separating coil of the second air circuit breaker; the outlet end of the opening coil of the second air circuit breaker is connected to the zero line of the first control power supply and the zero line of the second control power supply; two ends of a second normally open contact of the second air circuit breaker are respectively connected with a first control power supply, a second control power supply and a second signal red light; and two ends of a second normally closed contact of the second air circuit breaker are respectively connected with a first control power supply, a second control power supply and a second signal green light.

Further, the first air circuit breaker and the second air circuit breaker are of a type of 3W L/4P series AC 220V.

The technical effect of the utility model lies in, the switching circuit that has utilized the ACB power carries out automatic switch-over to first ACB power and second ACB power to realized that one of dual supply is equipped with one and is used for, the condition of a power problem still can realize supplying power to the main circuit.

Drawings

Fig. 1 is a schematic diagram of a main circuit of the present invention.

Fig. 2 is a schematic diagram of a switching circuit of the ACB power supply of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, in the present embodiment, a dual power switching control circuit is provided, including a first ACB power supply 1N, 1L 1, 1L 03, a second ACB power supply 2N, 2L, 3L, a first voltage relay 1KV L, a second voltage relay 2KV L, a first air circuit breaker 1QF, a second air circuit breaker 2QF, and a switching circuit of an ACB power supply, wherein the first ACB power supply 1N, 1L, 1KV L are connected in parallel to the first voltage relay 1KV L, 1KV L for monitoring voltages of the first ACB power supply 1N, 1L, 1KV L, and a second ACB power supply voltage relay 2N, 2KV L, 2KV 363, and a contact point of the second ACB power supply is connected in parallel, and the first and the second ac relay L is connected in parallel, and the second ACB power supply contacts of the first ACB power supply 2, and the second relay L is connected in parallel, and the switching circuit L, the second relay L, and the second relay L is capable of the switching circuit switch circuit.

The three-phase three-phase three-phase.

In order to switch between the first ACB power supply 1N, 1L 11, 1L 2, 1L 3, the second ACB power supply 2N, 2L 1, 2L 2, 3L 03 is also required to be a switching circuit for the first ACB power supply 1N, 1L, 1L, 1L, for which the following circuit realizes the automatic and manual control switching of the second ACB power supply 2N, 2L 1, 2L 2, 3L 3 to the first ACB power supply 1N, 1L 1, 1L 2, 1L 3.

The conversion switch SA is connected with a 4 th endpoint of a first voltage relay 1KV, 1KV and 1KV normally closed contacts, a second closing button 2SB is connected in parallel on second normally closed contacts 1 KV-2, 1 KV-2 and 1 KV-2 of the first voltage relay, outlet ends of the second normally closed contacts 1 KV-2, 1 KV-2 and 1 KV-2 of the first voltage relay are connected to an inlet end of a third normally closed contact S of the first air circuit breaker 1QF, an outlet end of the third normally closed contact S of the first air circuit breaker 1QF is connected to an inlet end of a first normally closed contact 2S of the second air circuit breaker 2QF, an outlet end of a first normally closed contact 2S of the second air circuit breaker 2QF is connected to an inlet end of a closing coil 2QF-1 of the second air circuit breaker 2QF, an outlet end of a closing coil 2QF-1 of the second air circuit breaker 2QF is connected to an inlet end of a switching coil 2QF-1 of the second air circuit breaker 2QF, an outlet coil 2QF-1, an outlet end of the second air circuit breaker 2QF-2 QF is connected to an inlet end of a switching coil 2K-2K of a switching coil of the first control power supply 1N, an outlet coil 3, a second control power supply 2HR, a second control power supply 2KV, a second N power supply 2HR, a normal open contact, a second N switch 2K, a zero line is connected to a zero line, a zero line 2K, a zero line of the second N switch 2K, a zero line 2K, a zero line of the second N2K, a zero line of the second air circuit breaker 2K.

The first air circuit breaker 1QF and the second air circuit breaker 2QF in the present embodiment are model numbers of 3W L/4P series AC 220V.

As a preferred embodiment of the present invention, it is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention, and that the scope of the present invention is also encompassed by the present invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A dual-power switching control circuit is characterized by comprising a first ACB power supply, a second ACB power supply, a first voltage relay, a second voltage relay, a first air circuit breaker, a second air circuit breaker and a switching circuit of the ACB power supply; the first voltage relay is connected in parallel to the first ACB power supply; the second voltage relay is connected in parallel with the second ACB power supply; and the contact of the first voltage relay and the contact of the second voltage relay are respectively connected into a switching circuit of the ACB power supply, and the switching between the first air circuit breaker and the second air circuit breaker is controlled.

2. The dual power switching control circuit of claim 1, wherein the switching circuit of the ACB power supply further comprises a first control power supply, a second control power supply, an intermediate relay, a transfer switch, a first signal red light, a second signal red light, a first signal green light, a second signal green light; a coil of an intermediate relay is connected to a first control power supply, and a first normally closed contact of the intermediate relay and a first normally open contact of the intermediate relay are connected to a 1 st endpoint of a conversion switch, a 5 th endpoint of the conversion switch, a 3 rd endpoint of the conversion switch and a 7 th endpoint of the conversion switch in an interlocking manner between the first control power supply and a second control power supply; the energy storage loop of the first air circuit breaker and the energy storage loop of the second air circuit breaker are connected to a first control power supply; the 2 nd terminal of the conversion switch is connected to the first normally closed contact of the second voltage relay; a first closing button is connected in parallel to a first normally closed contact of the second voltage relay; the outlet end of the first normally closed contact of the second voltage relay is connected to the inlet end of the first normally closed contact of the second air circuit breaker; the outlet end of the first normally closed contact of the second air circuit breaker is connected to the inlet end of the first normally closed contact of the first air circuit breaker; the outlet end of a first normally closed contact of the first air circuit breaker is connected to the inlet end of a closing coil of the first air circuit breaker, and the outlet end of the closing coil of the first air circuit breaker is connected to the zero lines of the first control power supply and the second control power supply; the 2 nd terminal of the conversion switch is connected to the wire inlet end of the normally closed contact of the first voltage relay; a switching-off button is connected in parallel to the normally closed contact of the first voltage relay; the outlet end of a first normally open contact of the first voltage relay is connected to the inlet end of the brake separating coil of the first air circuit breaker; the outlet end of the opening coil of the first air circuit breaker is connected to the zero line of the first control power supply and the zero line of the second control power supply; two ends of a second normally open contact of the first air circuit breaker are respectively connected with a first control power supply, a second control power supply and a first signal red light; two ends of a second normally closed contact of the first air circuit breaker are respectively connected with a first control power supply, a second control power supply and a first signal green light;

3. The dual power switching control circuit as claimed in claim 1, wherein the first air circuit breaker and the second air circuit breaker are of type 3W L/4P series AC 220V.