TWM644245U - Improvement device for automatic switching switch - Google Patents

Abstract

The present invention provides an improvement device for automatic switching switches, which addresses the existing limitation that two circuit breakers of the automatic switching switch can only switch between each other. When one circuit has a fault, the circuit breaker cannot be forced to close and let the other circuit breaker to operate at open and close. When a fire occurs, the circuit breaker that cannot be forced to operate in the closed position to supply reauired power, which would cause the safety problem of electricity use.

Description

Improved device for automatic transfer switch

This invention creates an improved device for an automatic transfer switch, which improves the function that the two circuit breakers of the automatic transfer switch in the prior art can only switch between each other. One circuit breaker is actuated to open and close. When a fire occurs, the actuated circuit breaker cannot be forced to supply power in the closed position, which improves the safety of electricity consumption.

The interlocking mode between the circuit breakers in the automatic transfer switch in the prior art, such as world-renowned brands such as Schneider, Siemens, etc., generally uses similar steel cables between circuit breakers and circuit breakers, and between the two (circuit breakers) The mechanism on the back locks the actuating mechanism of the circuit breaker) to interlock with each other to achieve an interlocking relationship, so there are special requirements on specifications, models, and sizes. If they are not the same model, specifications, it cannot be performed The interlock function must be replaced as a whole group and cannot be used effectively. In many cases in the actual power system, there are many situations where it is necessary to make the two circuit breakers lock each other, that is, the two circuit breakers are interlocked (Interlock ), that is, only one of the two circuit breakers is energized, and the two cannot be energized at the same time, which will cause a short circuit accident.

For the products in the prior art, for the products of the interlocking device of two circuit breakers, the bottom of the broken circuit breaker is usually dug and inserted into an interlocking insulating device similar to a see-saw form, and the mechanical The mechanical interlocking method restricts the movable closing contact of the circuit breaker, or locks the two circuit breakers to the relative tripping mechanism or input mechanism by means of sheet metal, so as to achieve the interlocking function of the two circuit breakers. There are many disadvantages in this way, which will cause inconvenience in use, limit the functionality and destroy the basic structure of the circuit breaker.

In the products in the prior art, the two circuit breakers are driven by an electric motor and a transmission mechanism, and then the two circuit breakers are actuated to open and close, so one circuit breaker of the automatic transfer switch is closed, and the other circuit breaker is In the on-off position, such a cycle, when the power circuit of one of the circuit breakers is disabled but the circuit breaker is not blocked, the other circuit breaker is activated to close, and when the other circuit breaker is opened and closed, the original disabled circuit breaker The device will be re-closed again, which will cause false switching. The lack of the above functions is a problem that must be solved.

The traditional automatic transfer switch in the prior art can not block one of the circuit breakers when the power circuit fails, and only the other circuit breaker is actuated. There is also a shortcoming that there is no mechanism to force closing and energization, and the traditional automatic transfer switch cannot solve the above problems.

To sum up the above problems, in addition to intrusive damage to the structure of the circuit breaker body, the traditional automatic transfer switch cannot block the faulty circuit and close the other circuit when one of the power circuits fails. One of the problems that must be solved is that it will not switch to the fault circuit again, and when a fire occurs in the system, it is also one of the problems that must be solved that the circuit breaker that cannot be forced to operate in the closed position provides power to the fire fighting equipment One; so the shortcomings of the automatic transfer switch in the prior art must be improved. When a fire occurs or an emergency, etc., the circuit breaker can be forced to be closed as the first priority, and when a fault occurs, the circuit breaker and the power of the fault circuit can be blocked. , is powered by another power circuit that has no fault status, of course it is best not to break Damage to the structure of the two circuit breaker bodies is the problem to be solved in this creation.

The main purpose of this creation is to provide an automatic switching function between two circuit breakers, a mechanical interlocking device that can achieve the function of electrical and mechanical interlocking, especially for long-distance applications, to avoid electrical problems Failure problems, resulting in malfunction or non-action. The main problem is to solve the electrical and mechanical interlocking between the two circuit breakers without destroying the structure of the circuit breakers, and to provide a switch interlock device with simple structure and convenient installation, especially when the circuit breaker is forced to close when a fire occurs. Can be used in an all-round way to solve the above-mentioned various functional requirements by setting a locking unit for interlocking function, and combining the reliable electrical and mechanical aspects to prevent malfunctions and improve the use of electrical equipment safety performance.

In order to achieve the above-mentioned purpose, the improved device of the automatic transfer switch of this invention is equipped with a variety of power input as a device for controlling the power supply, so as to prevent the failure of the power circuit from tripping the circuit breaker or the failure of the control power due to the lack of equalization, so as to ensure the power supply of this invention. The control power supply function of the automatic diverter switch modification is normal.

In order to achieve the above purpose, an external locking unit is provided, which can block the faulty power circuit, and make the power circuit of the electric operation motor operate normally so that the circuit can be opened and closed through the circuit breaker. , and set to receive information when a fire occurs, and force the function of closing the circuit breaker to be prioritized, and the sequence function of prioritizing the power circuit fault to trip and close.

In order to achieve the above-mentioned purpose, an improved device for an automatic transfer switch includes: a traditional electric motor type automatic transfer switch, a control power supply unit, and a locking unit; the traditional electric motor The Da-type automatic transfer switch includes: a main switch, a backup switch, an electric operating motor, an electric operating motor transmission mechanism, a closing command contact, and an opening and closing command contact. The main switch has a main switch handle, a Main switch normally open auxiliary contact, one main switch normally closed auxiliary contact, one main switch trip button switch, the main switch handle is linked with the electric operation motor transmission mechanism, the main switch normally open auxiliary contact is the main switch The auxiliary contact in the closed position, the normally closed auxiliary contact of the main switch is the auxiliary contact of the main switch in the on-off position, the trip button switch of the main switch links the internal trip mechanism of the main switch, and the trip of the main switch When the button switch is actuated, the main switch cannot be turned on or off. The backup switch has a backup switch handle, a backup switch normally open auxiliary contact, a backup switch normally closed auxiliary contact, and a backup switch trip button switch. The spare switch handle is linked with the electric operation motor transmission mechanism. The normally open auxiliary contact of the spare switch is the auxiliary contact of the spare switch in the closed position, and the normally closed auxiliary contact of the spare switch is the supplementary contact of the spare switch in the on-off position. Contact, the trip button switch of the backup switch is linked with the trip mechanism inside the backup switch, when the trip button switch of the backup switch is activated, the backup switch cannot be opened or closed, and the electric operation motor operates according to the contact command of the closing command Drive the electric operation motor transmission mechanism to actuate the main switch handle to the closed position, the main switch normally open auxiliary contact actuates the electric operation motor to stop actuation, or actuate the spare switch handle to the closed position , the normally open auxiliary contact of the standby switch is actuated, the electric operation motor is stopped, and the electric operation motor is actuated according to the start-off command contact command to drive the electric operation motor transmission mechanism to actuate the main switch handle to start and break the main switch position, the normally closed auxiliary contact of the main switch is actuated and the electric operation motor is stopped, or the handle of the backup switch is actuated and the backup switch is turned to the on-off position, the normally closed auxiliary contact of the backup switch is actuated and the electric operation motor is stopped, the The traditional electric motor type automatic transfer switch actuates the electric operation motor according to the closing command contact and the opening and closing command contact information The electric operation motor transmission mechanism is linked to the main switch handle or the main switch normally open auxiliary contact to make the main switch or the backup switch actuated to open or close; the control power supply unit is powered by an AC power supply or an uninterruptible power supply system or The DC power supply is used as the input power supply, which is transformed into an appropriate DC working power supply through AC-DC conversion and step-down, as the working power supply of the locking unit; the locking unit has a main switch locking unit and a backup switch locking unit, and the main switch locking unit It is composed of a main switch locking coil or an external locking unit of the main switch. When the main switch locking unit is activated, the main switch is locked. The main switch trips the button switch. The main switch cannot be opened or closed. The actuating normally closed auxiliary contact is not conductive, so that the main switch is not at the set position when the electric operation motor drives the electric operation motor transmission mechanism, the backup switch can be actuated according to the closing command contact or the opening and closing command contact, the backup switch When the switch lock unit is actuated, the backup switch is locked and the button switch is tripped. The backup switch cannot be opened or closed. When the motor transmission mechanism is electrically operated, the backup switch is not at the set position, and the main switch can be actuated according to the closing command contact or the opening command contact; wherein the improved device of the automatic switching switch is provided with the control power supply unit and the locking unit , the control power supply unit can ensure the improved device of the automatic transfer switch, and the locking unit has an appropriate and stable DC power supply. When the locking unit is actuated, one of the main switch or the backup switch can be locked, and the other A switch can be normally opened or closed.

In order to achieve the above-mentioned purpose, an improved device for an automatic transfer switch includes: a traditional electric motor type automatic transfer switch, a control power supply unit, and a fire alarm actuation unit; the traditional electric motor type automatic transfer switch includes: a main switch, a backup switch, an electric operation motor, an electric operation motor transmission mechanism, a closing instruction contact, an opening instruction contact, the main switch It has a main switch handle, a main switch normally open auxiliary contact, a main switch normally closed auxiliary contact, a main switch trip button switch, the main switch handle is linked with the electric operation motor transmission mechanism, and the main switch is normally open The auxiliary contact is the auxiliary contact of the main switch in the closed position, and the normally closed auxiliary contact of the main switch is the auxiliary contact of the main switch in the on-off position. The trip button switch of the main switch is linked to the internal trip of the main switch mechanism, when the main switch trips the button switch, the main switch cannot be turned on or off, and the backup switch has a backup switch handle, a backup switch normally open auxiliary contact, a backup switch normally closed auxiliary contact, a backup switch The switch trip button switch, the spare switch handle is linked with the electric operation motor transmission mechanism, the normally open auxiliary contact of the spare switch is the auxiliary contact of the spare switch in the closed position, and the normally closed auxiliary contact of the spare switch is the spare contact The auxiliary contact of the switch in the on-off position, the trip button switch of the backup switch is linked to the trip mechanism inside the backup switch, when the trip button switch of the backup switch is actuated, the backup switch cannot be turned on or off, and the electric operation motor depends on The closing instruction contact command actuates to drive the electric operation motor transmission mechanism to actuate the main switch handle to the closed position, the main switch is normally open auxiliary contact actuation, the electric operation motor stops actuation, or the spare switch handle Actuate the standby switch to the closed position, the normally open auxiliary contact of the standby switch actuates the electric operation motor to stop, and the electric operation motor drives the electric operation motor according to the command of the start-off command contact to drive the main switch handle Actuate the main switch to the on-off position, the normally closed auxiliary contact of the main switch actuates the electric motor to stop actuating, or actuate the handle of the spare switch to the on-off position, and the normally closed auxiliary contact of the spare switch actuates the The electric operation motor stops operating, and the traditional electric motor type automatic transfer switch actuates the electric operation motor according to the closing command contact and the opening and closing command contact information, and the electric operation motor transmission mechanism links the main switch handle or the main switch normally. Open the auxiliary contact to actuate the main switch or the standby switch to open or close; the control power supply unit An AC power supply or an uninterruptible power supply system or a DC power supply is used as an input power supply, which is converted into an appropriate DC working power supply through AC-DC conversion and step-down, and used as a working power supply for a locking unit; the fire alarm actuating unit is equipped with a fire alarm actuating relay, A fire alarm actuation normally closed auxiliary contact, the fire alarm actuation relay is actuated according to a fire alarm actuation information, when the fire alarm actuation information is actuated, the fire alarm actuation relay is actuated, electrically connected to the electric operation motor to drive the electric operation motor transmission The mechanism makes the main switch or the backup switch to the closed position, and is electrically connected to the closed command contact to make the electric operation motor actuate to drive the electric operation motor transmission mechanism to make the main switch or the backup switch to the closed position, the fire alarm The actuating normally closed auxiliary contact is the normally closed auxiliary contact of the fire alarm actuating relay. The fire alarm actuating normally closed auxiliary contact is electrically connected to the start-off command contact and the electric operation motor. When the fire alarm actuating unit is actuated, the start The command contact is forced not to act, and the main switch or the backup switch is forced to the closed position; the improved device of the automatic transfer switch is provided with the control power supply unit and the locking unit, and the control power supply unit can ensure that the improved device of the automatic transfer switch The blocking unit is an appropriate and stable DC power supply. When the fire alarm activation information of the fire alarm system is activated, the fire alarm activation unit is activated to force the main switch or the backup switch to be in the closed position.

1: Improved device for automatic transfer switch

100: Traditional electric motor type automatic transfer switch

110: main switch

111: Main switch handle

112: Main switch normally open auxiliary contact

113: Main switch normally closed auxiliary contact

114: Main switch trip button switch

119: fire alarm action information

120: spare switch

121: spare switch handle

122: Spare switch normally open auxiliary contact

123: Spare switch normally closed auxiliary contact

124: Spare switch trip button switch

130: Electric operation motor

140: Electric operation motor transmission mechanism

151: close command contact

152: Open and close command contact

200: Control power supply unit

201: AC power supply

202: UPS

203: DC power supply

300: Locking unit

311: Main switch lock unit

312: Main switch lockout coil

313: Main switch external locking unit

314: Main switch lock action normally closed auxiliary contact

321: Spare switch lock unit

324: Standby switch lock action normally closed auxiliary contact

400: Fire alarm action unit

401: fire alarm relay

402: Fire alarm normally closed auxiliary contact

[Fig. 1] It is a configuration schematic diagram of the first embodiment of an improved device of an automatic transfer switch created by the present invention

[Fig. 2] It is a configuration schematic diagram of the second embodiment of the improved device of an automatic transfer switch in this invention

The first implementation example of an improved device 1 for an automatic transfer switch in the present invention is shown in Figure 1. An improved device 1 for an automatic transfer switch includes: a traditional electric motor type automatic transfer switch 100, a control power supply unit 200, a lock Unit 300; the traditional electric motor type automatic transfer switch 100 includes: a main switch 110, a backup switch 120, an electric operating motor 130, An electric operation motor transmission mechanism 140, a close command contact 151, an open command contact 152, the main switch 110 has a main switch handle 111, a main switch normally open auxiliary contact 112, a main switch normally closed auxiliary contact Contact 113, a main switch trip button switch 114, the main switch handle 111 is linked with the electric operation motor transmission mechanism 140, the main switch normally open auxiliary contact 112 is the auxiliary contact of the main switch 110 in the closed position, The normally closed auxiliary contact 113 of the main switch is the auxiliary contact of the main switch 110 in the on-off position. The trip button switch 114 of the main switch is linked with the trip mechanism inside the main switch 110, and the trip button switch 114 of the main switch is actuated. , the main switch 110 cannot be turned on or off, and the backup switch 120 has a backup switch handle 121, a backup switch normally open auxiliary contact 122, a backup switch normally closed auxiliary contact 123, a backup switch trip button switch 124, the backup switch handle 121 is linked with the electric operation motor transmission mechanism 140, the backup switch normally open auxiliary contact 122 is the auxiliary contact of the backup switch 120 in the closed position, and the backup switch normally closed auxiliary contact 123 is the The backup switch 120 is an auxiliary contact in the on-off position. The backup switch trip button switch 124 is linked with the trip mechanism inside the backup switch 120. When the backup switch trip button switch 124 is actuated, the backup switch 120 cannot be turned on or off. , the electric operation motor 130 drives the electric operation motor transmission mechanism 140 to move the main switch handle 111 to the closed position according to the instruction of the closing command contact 151, and the normally open auxiliary contact 112 of the main switch actuates the electric The operation motor 130 is stopped, or the standby switch handle 121 is actuated to the closed position, and the normally open auxiliary contact 122 of the standby switch is activated. The electric operation motor 130 is stopped, and the electric operation motor 130 is activated according to the The break instruction contact 152 command actuates to drive the electric operation motor transmission mechanism 140 to actuate the main switch handle 111 to the on-off position, and the main switch normally closed auxiliary contact 113 actuates the electric operation motor 130 to stop actuating, or The standby switch handle 121 is actuated to the standby switch 120 to the on-off position, and the normally closed auxiliary contact 123 of the standby switch actuates the electric switch. The operating motor 130 stops operating, and the traditional electric motor type automatic transfer switch 100 actuates the electric operating motor 130 and the electric operating motor transmission mechanism 140 according to the closing command contact 151 and the opening and closing command contact 152, and the main switch is linked The handle 111 or the normally open auxiliary contact 112 of the main switch makes the main switch 110 or the standby switch 120 actuated to open or close; The input power supply is transformed into an appropriate DC working power supply through AC-DC conversion and step-down, as the working power supply of the locking unit 300; the locking unit 300 has a main switch locking unit 311, a backup switch locking unit 321, and the main switch is locked Unit 311 is composed of a main switch locking coil 312 or an external main switch locking unit 313. When the main switch locking unit 311 is actuated, it locks the main switch. When the unit 311 is actuated, the main switch is closed and the normally closed auxiliary contact 314 is not conducting, so that the main switch 110 is not at the set position when the electric operation motor 130 drives the electric operation motor transmission mechanism 140, and the backup switch 120 can be closed according to the closing command. The contact 151 or the on-off command contact 152 is actuated. When the standby switch locking unit 321 is actuated, the standby switch tripping button switch 124 is blocked. The standby switch 120 cannot be opened or closed. When the standby switch locking unit 321 is actuated, A backup switch is closed and normally closed auxiliary contact 324 is not conducting, so that when the electric operation motor 130 drives the electric operation motor transmission mechanism 140, the backup switch 120 is not at the set position, and the main switch 110 can be closed according to the command contact 151 Or the on-off command contact 152 is actuated; wherein the improved device 1 of the automatic transfer switch is provided with the control power supply unit 200 and the locking unit 300, and the control power supply unit 200 can ensure that the improved device 1 of the automatic transfer switch, the locking unit 300 An appropriate and stable DC power supply, when the locking unit 300 is activated, one of the main switch 110 or the backup switch 120 can be locked, and the other switch can be normally opened or closed.

The second implementation example of an improved device 1 for an automatic transfer switch in this invention is shown in Figure 2. An improved device 1 for an automatic transfer switch includes: a traditional electric motor type automatic transfer switch 100, a control power supply unit 200, a fire alarm Actuating unit 400; the traditional electric motor type automatic transfer switch 100 includes: a main switch 110, a backup switch 120, an electric operation motor 130, an electric operation motor transmission mechanism 140, a closing command contact 151, an opening and closing command Contact 152, the main switch 110 has a main switch handle 111, a main switch normally open auxiliary contact 112, a main switch normally closed auxiliary contact 113, a main switch trip button switch 114, the main switch handle 111 and The electric operation motor transmission mechanism 140 is linked, the main switch normally open auxiliary contact 112 is the auxiliary contact of the main switch 110 in the closed position, and the main switch normally closed auxiliary contact 113 is the main switch 110 in the on-off position. Auxiliary contact, the main switch trip button switch 114 is linked with the main switch 110 internal trip mechanism, when the main switch trip button switch 114 is actuated, the main switch 110 cannot be turned on or off, and the backup switch 120 has a backup Switch handle 121, a spare switch normally open auxiliary contact 122, a spare switch normally closed auxiliary contact 123, a spare switch trip button switch 124, the spare switch handle 121 is linked with the electric operation motor transmission mechanism 140, the spare switch The normally open auxiliary contact 122 of the switch is the auxiliary contact of the backup switch 120 in the closed position, and the normally closed auxiliary contact 123 of the backup switch is the auxiliary contact of the backup switch 120 in the on-off position, and the backup switch trips the push button switch 124 interlocks the internal trip mechanism of the backup switch 120. When the backup switch trip button switch 124 is actuated, the backup switch 120 cannot be opened or closed, and the electric operation motor 130 drives the electric operation according to the instruction of the closing instruction contact 151. The motor transmission mechanism 140 actuates the main switch handle 111 and the main switch 110 to the closed position, the main switch normally open auxiliary contact 112 actuates the electric operation motor 130 to stop actuating, or actuates the standby switch handle 121 to the standby switch 120 To the closed position, the normally open auxiliary contact 122 of the standby switch actuates the electric operation motor 130 to stop actuating, The electric operation motor 130 drives the electric operation motor transmission mechanism 140 according to the on-off instruction contact 152 to actuate the main switch handle 111 to the on-off position, and the normally closed auxiliary contact 113 of the main switch actuates the The electric operation motor 130 stops actuating, or the standby switch handle 121 actuates the standby switch 120 to the on-off position, and the normally closed auxiliary contact 123 of the standby switch actuates the electric operation motor 130 to stop actuating. The traditional electric motor type automatic transfer switch 100 actuates the electric operation motor 130 and the electric operation motor transmission mechanism 140 according to the closing command contact 151 and the opening and closing command contact 152, and links the main switch handle 111 or the main switch normally open auxiliary contact 112 to make the main switch The switch 110 or the standby switch 120 is actuated to open or close; the control power supply unit 200 uses an AC power supply 201 or an uninterruptible power supply system 202 or a DC power supply 203 as an input power supply, which is converted and stepped down to a suitable DC power supply The power supply is used as a working power supply for a locking unit 300; the fire alarm actuating unit 400 is provided with a fire alarm actuating relay 401 and a fire alarm actuating normally closed auxiliary contact 402, and the fire alarm actuating relay 401 actuates according to a fire alarm actuating information 119, When the fire alarm actuation information 119 is actuated, the fire alarm actuation relay 401 is actuated, electrically connected to the electric operation motor 130 to drive the electric operation motor transmission mechanism 140 to make the main switch 110 or the backup switch 120 to the closed position, and electrically Connect to the close command contact 151 to make the electric operation motor 130 actuate to drive the electric operation motor transmission mechanism 140 to make the main switch 110 or the backup switch 120 to the closed position, and the fire alarm actuation normally closed auxiliary contact 402 is the fire alarm actuation The normally closed auxiliary contact of the relay 401, the fire alarm actuated normally closed auxiliary contact 402 is electrically connected to the on-off command contact 152 and the electric operation motor 130, and the on-off command contact 152 is activated when the fire alarm actuating unit 400 is actuated Mandatory non-action, forcing the main switch 110 or the backup switch 120 to the closed position; wherein the improved device 1 of the automatic transfer switch is provided with the control power supply unit 200 and the locking unit 300, and the control power supply unit 200 can ensure the automatic transfer switch. Improved device 1. The locking unit 300 is an appropriate and stable DC power supply. When the fire alarm system activates the fire alarm When the message 119 is actuated, the fire alarm actuation unit 400 is actuated to force the main switch 110 or the standby switch 120 to be in the closed position.

To sum up, this invention creates an improved device for an automatic transfer switch, which further improves the stability and safety of the circuit breaker panel in the power supply system, and has deep industrial applicability. In addition, after checking the relevant products on the market and the approved patent announcements, there is no one with the same technical characteristics as this creation, which also meets the statutory patent application requirements of novelty and advancement. To file a patent application in accordance with the law, I urge your review committee to grant the patent for this case as soon as possible to ensure the rights and interests of the applicant. However, what is disclosed in this case is only a preferred embodiment of this creation, which cannot limit the scope of rights of this creation. Any equivalent changes or modifications made in accordance with the spirit of this creation are still covered by the scope of patent applications for this creation. middle.

1: Improved device for automatic transfer switch

100: Traditional electric motor type automatic transfer switch

110: main switch

111: Main switch handle

112: Main switch normally open auxiliary contact

113: Main switch normally closed auxiliary contact

114: Main switch trip button switch

120: spare switch

121: spare switch handle

122: Spare switch normally open auxiliary contact

123: Spare switch normally closed auxiliary contact

124: Spare switch trip button switch

130: Electric operation motor

140: Electric operation motor transmission mechanism

151: close command contact

152: Open and close command contact

200: Control power supply unit

201: AC power supply

202: UPS

203: DC power supply

300: Locking unit

311: Main switch lock unit

312: Main switch lockout coil

313: Main switch external locking unit

314: Main switch lock action normally closed auxiliary contact

321: Spare switch lock unit

324: Standby switch lock action normally closed auxiliary contact

Claims (2)

An improved device for an automatic transfer switch, comprising: a traditional electric motor type automatic transfer switch, a control power supply unit, and a locking unit; The traditional electric motor type automatic transfer switch includes: a main switch, a backup switch, an electric operation motor, an electric operation motor transmission mechanism, a closing command contact, and an opening and closing command contact. The main switch has a main switch Handle, a main switch normally open auxiliary contact, a main switch normally closed auxiliary contact, a main switch trip button switch, the main switch handle is linked with the electric operation motor transmission mechanism, the main switch normally open auxiliary contact is The auxiliary contact of the main switch in the closed position, the normally closed auxiliary contact of the main switch is the auxiliary contact of the main switch in the on-off position, the trip button switch of the main switch links the internal trip mechanism of the main switch, the main switch When the switch trip button switch is activated, the main switch cannot be turned on or off. The backup switch has a backup switch handle, a backup switch normally open auxiliary contact, a backup switch normally closed auxiliary contact, and a backup switch trip button switch, the spare switch handle is linked with the electric operation motor transmission mechanism, the normally open auxiliary contact of the spare switch is the auxiliary contact of the spare switch in the closed position, and the normally closed auxiliary contact of the spare switch is the auxiliary contact of the spare switch when the spare switch is on and off. The auxiliary contact at the position, the trip button switch of the backup switch is linked with the trip mechanism inside the backup switch, when the trip button switch of the backup switch is actuated, the backup switch cannot be opened or closed, and the electric operation motor is connected according to the closing command. Point command actuation to drive the electric operation motor transmission mechanism to actuate the main switch handle to the closed position, the main switch normally open auxiliary contact actuation, the electric operation motor to stop actuation, or the standby switch handle to actuate the standby switch To the closed position, the normally open auxiliary contact of the standby switch is actuated, and the electric operation motor stops actuating, and the electric operation motor is actuated according to the instruction of the opening and breaking command contact to drive the transmission mechanism of the electric operation motor to actuate the main switch handle to actuate the main switch to the on-off position, the main switch normally closed auxiliary contact Actuate the electric operation motor to stop operation, or actuate the backup switch handle to the on-off position, the backup switch normally closed auxiliary contact actuates the electric operation motor to stop operation, and the traditional electric motor type automatic transfer switch is closed accordingly Command contact, the on-off command contact information actuates the electric operation motor, the electric operation motor transmission mechanism, and links the main switch handle or the main switch normally open auxiliary contact to actuate the main switch or the backup switch to on-off or closure; The control power supply unit uses an AC power supply or an uninterruptible power supply system or a DC power supply as an input power supply, which is transformed into an appropriate DC working power supply through AC-DC conversion and step-down, as the working power supply of the locking unit; The locking unit has a main switch locking unit and a backup switch locking unit. The main switch locking unit is composed of a main switch locking coil or a main switch external locking unit. When the main switch locking unit is actuated, the main switch trip button is locked. The main switch of the switch cannot be turned on or off. When the main switch locking unit is activated, the main switch is locked and the normally closed auxiliary contact is not conducting, so that the main switch is not in the set position when the electric operation motor drives the electric operation motor transmission mechanism. The backup switch can be actuated according to the closing command contact or the opening and breaking command contact. When the backup switch locking unit is actuated, the backup switch is locked to trip the button switch. The backup switch cannot be opened or closed, and the backup switch locking unit is activated. When a backup switch is closed and activated, the normally closed auxiliary contact is not conducting, so that when the electric operation motor drives the electric operation motor transmission mechanism, the backup switch is not at the set position, and the main switch can be opened or closed according to the closing instruction contact or the opening and closing of the main switch. command contact action; The improved device of the automatic transfer switch is provided with the control power supply unit and the locking unit. The control power supply unit can ensure that the improved device of the automatic transfer switch and the locking unit have an appropriate and stable DC power supply. When the locking unit is activated, it can Make one of the main switch or the standby switch be blocked, and the other switch can be normally opened or closed. An improved device for an automatic transfer switch, comprising: a traditional electric motor automatic switch, a control power supply unit, and a fire alarm actuation unit; The traditional electric motor type automatic transfer switch includes: a main switch, a backup switch, an electric operation motor, an electric operation motor transmission mechanism, a closing command contact, and an opening and closing command contact. The main switch has a main switch Handle, a main switch normally open auxiliary contact, a main switch normally closed auxiliary contact, a main switch trip button switch, the main switch handle is linked with the electric operation motor transmission mechanism, the main switch normally open auxiliary contact is The auxiliary contact of the main switch in the closed position, the normally closed auxiliary contact of the main switch is the auxiliary contact of the main switch in the on-off position, the trip button switch of the main switch links the internal trip mechanism of the main switch, the main switch When the switch trip button switch is activated, the main switch cannot be turned on or off. The backup switch has a backup switch handle, a backup switch normally open auxiliary contact, a backup switch normally closed auxiliary contact, and a backup switch trip button switch, the spare switch handle is linked with the electric operation motor transmission mechanism, the normally open auxiliary contact of the spare switch is the auxiliary contact of the spare switch in the closed position, and the normally closed auxiliary contact of the spare switch is the auxiliary contact of the spare switch when the spare switch is on and off. The auxiliary contact at the position, the trip button switch of the backup switch is linked with the trip mechanism inside the backup switch, when the trip button switch of the backup switch is actuated, the backup switch cannot be opened or closed, and the electric operation motor is connected according to the closing command. Point command actuation to drive the electric operation motor transmission mechanism to actuate the main switch handle to the closed position, the main switch normally open auxiliary contact actuation, the electric operation motor to stop actuation, or the standby switch handle to actuate the standby switch To the closed position, the normally open auxiliary contact of the standby switch is actuated, and the electric operation motor stops actuating, and the electric operation motor is actuated according to the instruction of the opening and breaking command contact to drive the transmission mechanism of the electric operation motor to actuate the main switch handle to actuate the main switch To the on-off position, the normally closed auxiliary contact of the main switch is actuated, and the electric operation motor is stopped, or the handle of the spare switch is actuated. actuation, the traditional electrical The motor-type automatic transfer switch actuates the electric operation motor according to the information of the closing command contact and the opening and closing command contact. or the standby switch is actuated to open or close; The control power supply unit uses an AC power supply or an uninterruptible power supply system or a DC power supply as an input power supply, which is converted into an appropriate DC working power supply through AC-DC conversion and step-down, and used as a working power supply for a locking unit; The fire alarm actuation unit is provided with a fire alarm actuation relay and a fire alarm actuation normally closed auxiliary contact. The fire alarm actuation relay is actuated according to a fire alarm actuation information. When the fire alarm actuation information is actuated, the fire alarm actuation relay is actuated and electrically connected until the electric operation motor drives the electric operation motor transmission mechanism to make the main switch or the standby switch to the closed position, and is electrically connected to the closing command contact to make the electric operation motor actuate to drive the electric operation motor transmission mechanism to make the main switch switch or the backup switch to the closed position, the fire alarm actuation normally closed auxiliary contact is the normally closed auxiliary contact of the fire alarm actuation relay, and the fire alarm actuation normally closed auxiliary contact is electrically connected to the opening command contact of the electric Operate the motor, when the fire alarm actuating unit is actuated, the on-off command contact is forced not to actuate, and the main switch or the backup switch is forced to the closed position; The improved device of the automatic transfer switch is provided with the control power unit and the locking unit. The control power unit can ensure that the improved device of the automatic transfer switch has an appropriate and stable DC power supply for the locking unit. When the fire alarm actuation information of the fire alarm system is actuated , the fire alarm actuating unit is actuated to force the main switch or the backup switch to be in the closed position.

Images