TWI808851B - Improved device for automatic toggle switch interlock module - Google Patents

Abstract

The present invention is an improved device for the automatic toggle switch interlocking module, which is not limited by the traditional technology that the interlocking modules must be of the same brand, the same size, and the same specification. At the same time, it also improves the traditional technology's doubts about the breaker body being damaged, and is limited by the distance or the problem that the mechanical interlock between the circuit breakers is difficult to overcome. The invention utilizes the detection of the power state of the power circuit to perform electrical and mechanical functional interlocking between the circuit breakers, and can interlock across the switchboard for a long distance to prevent malfunction, and provides a simple structure and installation. The convenient interlock device improves the safety of electricity consumption.

Description

Improvement device of automatic transfer switch interlock module

The present invention is an improved device for an interlocking module of an automatic transfer switch, which can improve the conventional automatic transfer switch. The interlocking mode between the circuit breakers is not limited by the brand specification and size. The main purpose of the present invention is an interlocking device used between circuit breakers to detect the power state of the power circuit, a mechanically reliable interlocking device, especially suitable for applications that are not limited by distance, to avoid malfunctions or non-operations due to electrical faults, to provide an interlocking device with simple structure and easy installation for electrical and mechanical interlocking between two circuit breakers, which can comprehensively solve the above-mentioned various functional requirements, prevent malfunctions, and improve the safety performance of electrical equipment.

The interlocking method 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 the circuit breakers and the circuit breakers, and interlocks between the two (the mechanism on the back of the circuit breaker locks the actuating mechanism of the circuit breaker) to achieve an interlocking relationship. Therefore, there are special requirements on specifications, models, and dimensions. If they are not of the same model and specification, the interlocking function cannot be performed, and the entire group must be replaced, which cannot be effectively used. This is a common problem in the current market.

In many cases of actual power systems, there are many situations in which two circuit breakers must be locked to each other, that is, two circuit breakers are interlocked (Interlock), that is, only one of the two circuit breakers is powered on, and both cannot be powered on at the same time, which will cause a short circuit accident. Most of the above states use automatic transfer switches (ATS) under normal circumstances, but two automatic transfer switches are generally arranged side by side on the same casing, and the circuit breakers must be of the same specification and size. In the actual situation, all flexible application methods are lost. If the improved device of the automatic switching switch interlock module of the present invention can be used, the long-term inconvenience mentioned above can be solved, but the function of electrical and mechanical interlocking can be solved to meet its safety requirements.

For the products in the conventional technology, for the products of the interlocking device of two circuit breakers, the bottom of the circuit breaker is generally destroyed and a seesaw-like insulating device is inserted into the interlocking one. The movable closing contact of the circuit breaker is limited by mechanical interlocking, or the two circuit breakers are locked by sheet metal to the relative tripping mechanism or input mechanism, so as to achieve the interlocking function of the two circuit breakers. This method has many disadvantages, which will cause inconvenience in use and functional limitations, and damage the basic structure of the circuit breaker. Furthermore, switches with different numbers of poles or different types of circuit breakers cannot be manufactured, and electrical and mechanical interlocking functions cannot be done at any position and in any space. In particular, it is limited by the size, brand, model, and specification. Make improvements to meet the actual needs of the market and improve the quality of safety.

In the conventional technology, there will be places where circuit breakers must be interlocked. Interlock requirements for power supply systems with more than two circuits in the power circuit system, such as power interlock between dual power circuits... In order to consider the reliability and stability of the power supply quality, the above power circuit system adopts multi-circuit power supply, so there must be an interlocking mechanism between circuit breakers. At present, automatic transfer switches (ATS) are generally used as interlocking control panels in the market. The automatic transfer switches are bulky, expensive, and take a long time to manufacture. Moreover, the circuit breakers of this device must be of the same brand, specification, size, and accessories. As a result, there are quite a lot of restrictions on actual use, and no changes can be made. Therefore, this problem has not been solved, especially when the load changes or the size of the equipment is replaced, the existing equipment cannot be used, and the capacity of the equipment cannot be changed, the old and new models cannot be matched, and the presence space cannot be matched... It will cause many troubles.

The main purpose of the present invention is to provide an interlocking device used between circuit breakers, a mechanical interlocking device that can achieve the function of electrical and mechanical interlocking, especially suitable for long-distance applications, and avoid malfunctions or non-operations caused by electrical failures. The main problem is to solve the electrical and mechanical interlock between two circuit breakers by detecting the state of the power circuit, and provide a switch interlock device with simple structure and convenient installation. The solution that can be used in all aspects of the above-mentioned various functional requirements uses the detection of the power state of the power circuit to perform an interlock function, and combines the reliable electrical and mechanical aspects to prevent malfunctions and improve the safety performance of electrical equipment.

In order to achieve the above-mentioned purpose, the improved device of the interlocking module of the automatic transfer switch must have reliable and safe electrical and mechanical interlocking. If it can be used in any specification, it can be interlocked arbitrarily, will not cause malfunction, and is not limited by distance. It is best to have mechanical and electrical contacts, and meet the requirements of permanent components. To standardize and standardize products, and this problem has always existed in the power system and cannot be effectively resolved. For the problems that cannot be overcome by the previous technology, and the inconvenience in use, such as the interlock between the air circuit breaker and the molded case circuit breaker, etc., it is not limited by the type of equipment, so there is a product demand for the improved device of the automatic transfer switch interlock module of the present invention. By detecting the power state of the power circuit, the circuit breaker and the circuit breaker can perform electrical and mechanical functions to achieve interlocking.

In order to achieve the above-mentioned purpose, the improved device of the automatic transfer switch interlock module can improve the interlocking method of the conventional circuit breaker panel, for example, use the automatic transfer switch (ATS) to do the interlocking method of two pairs of locks; or use the sheet metal method or the cable type for interlocking; two of the same brand, specification, and size can be interlocked and the structure of the circuit breaker must be damaged, and three ATS cannot perform the interlocking function; and must be in the same space. The invention is not limited by the size of the brand name, the circuit breaker panel has a self-protection locking function and can automatically close the circuit breaker by detecting the power state of the power circuit. The circuit breaker panel and the circuit breaker panel can be electrically and mechanically functionally interlocked. It is not limited by space and can be interlocked across a long distance. The purpose of solving the problem, in addition to novelty and progress, the focus of the present invention must also consider the market problem. In addition to the functionality of the solution, the market problem is whether it is in an appropriate position or can comply with world regulations such as NEC, IEC, JIS, BS, CCC, CNS, etc.

In order to achieve the above purpose, an improved device for an automatic transfer switch interlocking module is electrically connected to two power circuits, and each of the two power circuits has a circuit breaker with an electric operator. The two circuit breakers with an electric operator each include: a circuit breaker and an electric operator. The circuit breaker is connected to the power circuit. And the opening and breaking device, auxiliary contact, the electric operator is connected with the operating handle to actuate the circuit breaker to close or open; the improved device of the automatic transfer switch interlocking module includes two switch interlocking module devices, and the two switch interlocking module devices each include: a power circuit state detection device, a power circuit fault automatic locking device, and a power circuit automatic closing device; An electronic circuit, the electronic circuit is electrically connected to the power supply side and the load side of the circuit breaker, a resistor divider rectifier element or a plurality of resistors are connected in series between each phase sequence and the ground terminal to sense the voltage signal on the power supply side and the load side of the circuit breaker, and the state signal of each phase sequence of the electronic circuit with power or no power is sent to the internal key microprocessor of the control circuit assembly. The state of the voltage signal of each phase sequence is used to judge and calculate the internal contact state of the circuit breaker, and judge the state of each phase contact inside the circuit breaker, whether it is conduction closed or open circuit open, and judge the abnormal state of the power supply side and the load side in the power circuit, such as phase loss, reverse phase, reverse phase power supply, high voltage, low voltage, etc.; The trip mechanism of the circuit breaker with electric operator, or disconnect the closed circuit circuit of the circuit breaker with electric operator and interlock with the internal trip mechanism of the circuit breaker to achieve the locking function; when the automatic closing device of the power circuit judges the normal state of the power circuit according to the state detection device of the power circuit, the closed circuit circuit of the circuit breaker with the electric operator is turned on, so that the electric operator mechanism is connected with the linkage mechanism to drive the operating handle of the circuit breaker to close the circuit breaker; the switch interlock module device detects the power state of the power circuit. device, the internal voltage sensing device on the power supply side detects phase loss or reversed power supply, or the internal voltage sensing device detects phase reversal on the load side When the power supply is on, the internal circuit of the power circuit state detection device sends a message to drive the electric motor operator device to open and close the circuit breaker, and the locking device operates to lock. When the power state detection device detects a no-voltage state at the load side through the internal voltage sensing device, and detects the normal state of the power circuit at the power supply side through the internal voltage sensing device, the internal circuit of the power circuit state detection device sends a message to release the power circuit fault automatic locking device of the circuit breaker and electrically drive the electric operator to close The circuit breaker is designed to automatically lock the circuit breaker when the power circuit fails, and automatically close the circuit breaker when the power circuit is normal; the improved device of the automatic transfer switch interlock module, the two switch interlock module devices detect the power state of the power circuit respectively, when the power state detection device detects a phase-out or reversed power supply at the power supply side through an internal voltage sensing device, or detects a reversed-phase power supply at the load side through an internal voltage sensing device, the internal circuit of the power state detection device sends a The information drives the electric device to open and close the circuit breaker, and the locking device operates to lock. When the power state detection device detects a no-voltage state through the internal voltage sensing device at the load side, the internal circuit of the power state detection device sends a message to release the locking device of the switch and drive the electric device to close the circuit breaker to achieve the interlocking function of the two circuit breakers.

101: Improved device for automatic transfer switch interlock module

102: Power Circuit No. 1

110: No. 1 switch interlock module device

111: No. 1 circuit breaker with electric operator

112: Circuit Breaker No. 1

113: Electric manipulator No. 1

114: No. 1 Escape Agency

115: No. 1 operating handle

116: No. 1 auxiliary contact

117: No. 1 power circuit status inspection device

118: No. 1 power circuit fault automatic locking device

119: No. 1 power circuit automatic closing device

120: No. 1 circuit breaker trip button switch

121: No. 1 control circuit component

122: No. 1 power supply side

123: No. 1 load side

124: Electronic Circuit No. 1

125: No. 1 Microprocessor

103: Power Circuit No. 2

210: No. 2 switch interlock module device

211: No. 2 circuit breaker with electric operator

212: Circuit Breaker No. 2

213: Electric Manipulator No. 2

214: No. 2 Escape Agency

215: No. 2 operating handle

216: No. 2 auxiliary contact

217: No. 2 power circuit status inspection device

218: No. 2 power circuit fault automatic locking device

219: No. 2 power circuit automatic closing device

220: No. 2 circuit breaker trip button switch

221: No. 2 control circuit assembly

222: No. 2 power supply side

223: No. 2 load side

224: Electronic Circuit No. 2

225: Microprocessor No. 2

[Figure 1] It is a configuration schematic diagram of the first embodiment of an improved device for an automatic transfer switch interlock module of the present invention

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

The first embodiment of an improved device 101 of an automatic transfer switch interlock module of the present invention is shown in Figure 1, which is electrically connected to two power circuits, wherein the No. 1 power circuit 102 It is electrically connected with the No. 1 electric operator circuit breaker 111 and the No. 1 switch interlock module device 110, and the other No. 2 power circuit 103 is electrically connected with the No. 2 electric operator circuit breaker 211 and the No. 2 switch interlock module device 210. The No. 1 power circuit 102 and the No. 2 power circuit 103 are two power circuits and are disconnected on the load side of the No. 1 electric operator circuit breaker 111. The load side 123 and the No. 2 electric operator circuit breaker No. 2 load side 223 on the load side of the device 211 is electrically connected; the improved device 101 of the automatic transfer switch interlock module is electrically connected to a No. 1 power circuit 102, and the No. 1 power circuit 102 has at least one No. 1 electric operator circuit breaker 111. The No. 1 electric operator circuit breaker 111 includes: a No. 1 circuit breaker 112 and a No. 1 electric operator 113. In the No. 1 power circuit 102, the No. 1 circuit breaker 112 is equipped with a No. 1 trip mechanism 114, a No. 1 operating handle 115, a No. 1 auxiliary contact 116, and a No. 1 circuit breaker trip button switch 120. The No. 1 electric operator 113 is connected to the No. 1 operating handle 115 to actuate the No. 1 circuit breaker 112 to close or open; the No. 1 switch interlock module device 110 includes: a No. 1 power circuit status detection device 117, a No. 1 power circuit fault automatic locking device 118, a No. 1 power circuit automatic closing device 119; the No. 1 power circuit state detection device 117 includes: a No. 1 control circuit assembly 121 for detecting the voltage signal status of the No. 1 power supply side 122 and No. 1 load side 123 contacts of the No. 1 circuit breaker 112. The No. 1 control circuit assembly 121 is internally connected to a No. 1 electronic circuit 124, and the No. 1 electronic circuit 124 is electrically connected to the No. 1 circuit breaker On the No. 1 power supply side 122 and the No. 1 load side 123 of 112, a resistor voltage divider rectifier element or a voltage divider rectifier element with multiple resistors connected in series is connected in series between each phase sequence and the ground terminal to sense the voltage signal of the No. 1 circuit breaker 112, the No. 1 power supply side 122 and the No. 1 load side 123, and send the state signal of whether there is power or no power in each phase sequence of the No. 1 electronic circuit 124 to the inner key 1 of the No. 1 control circuit component 121. No. microprocessor 125, the program of the key in the No. 1 microprocessor 125 is based on whether the voltage signals of the No. 1 circuit breaker 112, the No. 1 power supply side 122 and the No. 1 load side 123 phase sequences of the detected No. The state of the internal contacts of the No. 1 circuit breaker 112 is judged to determine the state of the internal contacts of the No. 1 circuit breaker 112, whether it is conduction closed or open circuit open, and to judge the abnormal state of the No. 1 power supply side 122 and the No. 1 load side 123 in the No. 1 power circuit 102, such as at least one of underphase, reverse phase, reverse phase power supply, high voltage power, low voltage power, internal contact welding, etc.; On the top of the trip button switch 120, according to the instructions of the No. 1 power circuit status detection device 117, when a fault is detected, the No. 1 power circuit fault automatic locking device 118 will act to link the No. 1 circuit breaker trip button switch 120 with the No. 1 trip mechanism 114 inside the No. 1 circuit breaker 112 to lock, or disconnect the No. 1 power circuit 102 closed by the No. 1 electric operator circuit breaker 111 to achieve the locking function, or the No. 1 power circuit When the No. 1 power circuit automatic closing device 119 judges that the No. 1 power circuit 102 is in a normal state according to the No. 1 power circuit state detection device 117, first release the No. 1 power circuit fault automatic locking device 118, and the No. 1 power circuit breaker 111 closes the circuit circuit of the No. 1 power circuit automatic closing device 119. The No. 1 electric operator 113 mechanism connects and actuates the No. 1 circuit breaker 112 and the No. 1 operating handle 115 closes the No. 1 circuit breaker 112; the No. 1 switch interlock module device 110 uses the No. 1 power circuit status detection device 117. The power supply side 122 of the No. 1 power supply side can detect a fault power supply such as an under-phase or reverse-phase power supply through an internal voltage sensing device, or the No. 1 load side 123 terminal can detect a reverse phase power supply or fault through an internal voltage sensing device. When the power supply is on, the internal circuit of the No. 1 power circuit state detection device 117 sends a message, electrically connects the No. 1 power circuit fault automatic locking device 118 to open and close the No. 1 circuit breaker 112, and the No. 1 tripping mechanism 114 operates to lock. The loop 102 is in a normal state, and the internal circuit of the No. 1 power loop status detection device 117 sends Send a message to release the No. 1 power circuit fault automatic locking device 118 of the No. 1 switch interlock module device 110 and electrically drive the No. 1 electric operator 113 to link the No. 1 operating handle 115 to close the No. 1 circuit breaker 112, so that the No. 1 circuit breaker 112 is automatically blocked when the No. 1 power circuit 102 fails. When the No. 1 power circuit 102 is normal, the No. 1 switch interlock module 110 passes through the No. 1 power circuit. 119 makes the No. 1 circuit breaker 112 automatically close and energize. Similarly, the No. 2 switch interlock module device 210 is electrically connected to a No. 2 power circuit 103, and the No. 2 power circuit 103 has at least one No. 2 electric operator circuit breaker 211. The No. 2 electric operator circuit breaker 211 includes: a No. 2 circuit breaker 212 and a No. 2 electric operator 213. The No. 2 circuit breaker 212 is connected to the No. 2 power circuit 103. The No. 2 trip mechanism 214, the No. 2 operating handle 215, the No. 2 auxiliary contact 216, and the No. 2 circuit breaker trip button switch 220 are installed inside. The No. 2 electric operator 213 is connected to the No. 2 operating handle 215 to actuate the No. 2 circuit breaker 212 to close or open; the No. 2 switch interlock module device 210 includes: a No. The automatic closing device 219; the No. 2 power circuit state detection device 217 includes: a No. 2 control circuit assembly 221 for detecting the voltage signal state of the No. 2 power supply side 222 and the No. 2 load side 223 contact point of the No. 2 circuit breaker 212. The No. 2 control circuit assembly 221 is internally connected to a No. 2 electronic circuit 224, and the No. 2 electronic circuit 224 is electrically connected to the No. 2 power supply side 222 and the No. 2 load side of the No. 2 circuit breaker 212 223, a resistor divider rectifier element or a plurality of resistors are connected in series between each phase sequence and the ground terminal, to sense the voltage signal of the No. 2 circuit breaker 212, the No. 2 power supply side 222 and the No. 2 load side 223, and send the state signal of whether each phase sequence of the No. 2 electronic circuit 224 has power or no power to the No. 2 control circuit assembly 221 internal key 2 microprocessor 225, and the No. 2 microprocessor 225 internal key The program judges and calculates the 2 circuit breaker 212 , the 2 power supply side 222 and the 2 load side 223 according to whether the phase sequence voltage signals of the detected No. 2 circuit breaker 212 are present or not. The state of the internal contacts of No. 2 circuit breaker 212, and judge the state of each phase contact inside the No. 2 circuit breaker 212, whether it is conduction closed or open circuit open, and judge the abnormal state of the No. 2 power supply side 222 and the No. 2 load side 223 in the No. 2 power circuit 103, such as at least one of underphase, reverse phase, reverse phase power supply, high voltage power, low voltage power, and internal contact welding; According to the instructions of the No. 2 power circuit state detection device 217, when a fault is detected, the No. 2 power circuit fault automatic locking device 218 will activate the No. 2 circuit breaker trip button switch 220 to lock the No. 2 trip mechanism 214 inside the No. 2 circuit breaker 212, or disconnect the No. 2 power circuit 103 closed by the No. 2 electric operator circuit breaker 211 to achieve the locking function. When the No. 2 power circuit automatic closing device 219 determines the normal state of the No. 2 power circuit 103 according to the No. 2 power circuit state detection device 217, first release the No. 2 power circuit fault automatic locking device 218, and the No. 2 electric operator circuit breaker 211 closes the circuit of the No. 2 power circuit automatic closing device 219. The No. 2 electric operator 213 mechanism connects and actuates the No. 2 circuit breaker 212 and the No. 2 operating handle 215 closes the No. 2 circuit breaker 212; the No. 2 switch interlock module device 210 uses the No. 2 power circuit state detection device 217. The power supply side 222 of the No. 2 power supply can detect a fault power supply such as a lack of phase or reverse phase power supply through the internal voltage sensing device, or the reverse phase power supply or fault can be detected by the No. 2 load side 223 terminal through the internal voltage sensing device. When the power supply is on, the internal circuit of the No. 2 power circuit state detection device 217 sends a message, electrically connects the No. 2 power circuit fault automatic locking device 218 to open and close the No. 2 circuit breaker 212, and the No. 2 tripping mechanism 214 operates to lock. When the No. 2 power circuit state detection device 217 detects no voltage at the No. The circuit 103 is in a normal state, and the No. 2 power circuit state detection device 217 The internal circuit sends a message to release the No. 2 power circuit fault automatic locking device 218 of the No. 2 switch interlock module device 210 and electrically drives the No. 2 electric operator 213 to link the No. 2 operating handle 215 to close the No. 2 circuit breaker 212. When the No. 2 power circuit 103 fails, the No. 2 circuit breaker 212 is automatically blocked. When the No. 2 power circuit 103 is normal, the No. 2 switch interlock module device 210 automatically passes through the No. The closing device 219 has the function of automatically closing and electrifying the No. 2 circuit breaker 212 .

The second implementation example of the improved device 101 of the automatic transfer switch interlock module of the present invention is shown in Figure 2. The second implementation example is similar to the first implementation example and is a feasible implementation example. Compared with the first implementation example, the application of the No. 1 circuit breaker trip button switch 120 and the No. 2 circuit breaker trip button switch 220 is missing. When a fault is detected in the No. 1 power circuit 102 and No. 2 power circuit 103, the No. 1 power circuit 102 or No. 2 power circuit 103. The power circuit failure automatic locking device 118 or the No. 2 power circuit failure automatic locking device 218 is activated to lock the No. 1 tripping mechanism 114 inside the No. 1 circuit breaker 112 or the No. 2 tripping mechanism 214 inside the No. 2 circuit breaker 212 to achieve the locking function. It is the same as the first embodiment, and can achieve an improved device 101 for automatically switching the interlocking module of the switch, and the function of interlocking the two switches.

To sum up, the improved device of the interlocking module of the automatic transfer switch of the present invention 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 related products on the market and approved patent announcements, there is no one with the same essential technical features as the present invention, and it 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 the present invention, which cannot limit the scope of rights of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention are still covered in the patent application scope of the present invention.

101: Improved device for automatic transfer switch interlock module

102: Power Circuit No. 1

110: No. 1 switch interlock module device

111: No. 1 circuit breaker with electric operator

112: Circuit Breaker No. 1

113: Electric manipulator No. 1

114: No. 1 Escape Agency

115: No. 1 operating handle

116: No. 1 auxiliary contact

117: No. 1 power circuit status inspection device

118: No. 1 power circuit fault automatic locking device

119: No. 1 power circuit automatic closing device

120: No. 1 circuit breaker trip button switch

121: No. 1 control circuit component

122: No. 1 power supply side

123: No. 1 load side

124: Electronic Circuit No. 1

125: No. 1 Microprocessor

103: Power Circuit No. 2

210: No. 2 switch interlock module device

211: No. 2 circuit breaker with electric operator

212: Circuit Breaker No. 2

213: Electric Manipulator No. 2

214: No. 2 Escape Agency

215: No. 2 operating handle

216: No. 2 auxiliary contact

217: No. 2 power circuit status inspection device

218: No. 2 power circuit fault automatic locking device

219: No. 2 power circuit automatic closing device

220: No. 2 circuit breaker trip button switch

221: No. 2 control circuit assembly

222: No. 2 power supply side

223: No. 2 load side

224: Electronic Circuit No. 2

225: Microprocessor No. 2

Claims (1)

An improved device for an automatic transfer switch interlock module, which is electrically connected to two power circuits, and each of the two power circuits has a circuit breaker with an electric operator, and each of the two circuit breakers with an electric operator includes: a circuit breaker and an electric operator. The improved device of the group includes two switch interlocking module devices, and the two switch interlocking module devices each include: a power circuit state detection device, a power circuit fault automatic locking device, and a power circuit automatic closing device; the power circuit state detection device includes: a control circuit assembly for detecting the voltage signal status of the contacts on the power supply side and the load side of the switch. The control circuit assembly is internally connected to an electronic circuit. The electronic circuit is electrically connected to the power supply side and the load side of the circuit breaker. The rectification element or the voltage divider rectification element with a plurality of resistors connected in series is used to sense the voltage signals on the power supply side and the load side of the circuit breaker, and send the state signals of whether there is power or no power in each phase sequence of the electronic circuit to the internal key microprocessor of the control circuit assembly. It is conduction closed or open circuit opened, and judges the abnormal state of the power supply side and the load side in the power circuit, such as under-phase, reverse phase, reverse-phase power supply, high voltage, low voltage, etc.; when the power circuit fault automatic locking device judges the power circuit fault state according to the power circuit state detection device, there is a linkage mechanism on the power circuit fault automatic blocking device that can block the tripping mechanism inside the circuit breaker, or disconnect the closed circuit circuit of the circuit breaker attached to the electric operator and communicate with the circuit breaker. The trip mechanism inside the circuit breaker is interlocked to achieve the locking function; when the power circuit automatic closing device judges the normal state of the power circuit according to the power circuit state detection device, the closed circuit circuit of the circuit breaker attached to the electric operator is turned on, so that the electric operator mechanism is connected to the linkage mechanism to drive the circuit breaker operating handle to close the circuit breaker; the switch interlock module device detects the power state of the power circuit. , or when the load-side terminal detects the reversed-phase power supply through the internal voltage sensing device, the internal circuit of the power circuit state detection device sends a message to drive the electric motor operator device to open and close the circuit breaker, and the locking device operates to lock. Circuit fault automatic locking device and electrically drives the electric operator device to close the circuit breaker, so as to achieve the function of automatically locking the circuit breaker when the power circuit fails, and automatically closing and energizing the circuit breaker when the power circuit is normal; the improved device of the automatic transfer switch interlock module, the two switch interlock module devices respectively detect the power status of the power circuit. When the reverse-phase power supply is detected, the internal circuit of the power circuit state detection device sends a message to drive the electric operator to open and close the circuit breaker, and the locking device operates to lock. When the power circuit state detection device detects a no-voltage state at the load side end through the internal voltage sensing device, the internal circuit of the power circuit state detection device sends a message to release the locking device of the switch and drive the electric operator to close the circuit breaker to achieve the interlocking function of the two circuit breakers.

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