TWI829568B - Multi-function low voltage circuit breaker electrical operation improvement device - Google Patents

Abstract

The present invention is an improved device for the electrical operation of the multifunctional low-voltage circuit breaker, which can solve the lack of the electric operator of the low-voltage circuit breaker in the prior art, realize the self-detection of the power state of the power supply, and can completely determine the state when a fault occurs, without causing misoperation and/or lock function. When the fault is eliminated, the low-voltage circuit breaker can be reset by itself, and when the power state is normal, it can judge and perform the function of closing and opening, without causing misoperation, and achieving power safety and practicability. Also, improve the economy.

Description

Improved device for multifunctional low-voltage circuit breaker electric operator

The present invention is a multifunctional low-voltage circuit breaker electric operator improvement device, which can solve the lack of low-voltage circuit breaker electric operators in the conventional art, achieve self-detection of the power status of the power supply, and completely determine the status when a fault occurs without causing any problems. In case of malfunction, the latching function is performed. When the fault is eliminated, the low-voltage circuit breaker can be reset automatically. When the power status is normal, it can self-determine and perform the closing and opening functions without causing malfunction, thus achieving the safety and practicality of electricity consumption. and improve economic efficiency.

In the conventional art, the electric operator of the low-voltage circuit breaker is generally placed above the low-voltage circuit breaker. The electric operator is generally installed and integrated with the low-voltage circuit breaker using fixing screws. The electric operator must be actuated by an external operator. Controlled, the electric operator is controlled to actuate the internal electric motor to open or close the low-voltage circuit breaker. When the power circuit is tripped due to the internal protection function of the low-voltage circuit breaker in a fault state, the skilled low-voltage circuit breaker The electric operator does not have an automatic return mechanism function, cannot determine the status by itself, and cannot automatically perform the opening, closing and closing functions. Due to the above deficiencies, all low-voltage circuit breaker electric operator products in the prior art cannot solve the above common problems.

In the conventional art, the low-voltage circuit breaker electric operator receives external command messages, so the power status information of the power circuit cannot be directly obtained from the power supply side and the load side of the low-voltage circuit breaker. Therefore, when the power circuit fails, the low-voltage circuit breaker electric operator cannot correctly actuate and trip to isolate the accident, which is a major shortcoming. All low-voltage circuit breaker electric operator products in the conventional technology cannot solve the above common problems. .

In the conventional art, when a low-voltage circuit breaker electric operator trips due to a fault, its externally commanded opening, closing, and closing contacts are not restricted and locked, and malfunctions may occur, and the low-voltage circuit breaker The manual operating mechanism of the circuit breaker electric operator is not limited to the locked state, which may cause misoperation and cause industrial safety accidents. This is also a problem that must be improved. All low-voltage circuit breaker electric operator products in the past technology cannot solve it. common issues mentioned above.

In the conventional art, when an electric operator of a low-voltage circuit breaker performs an external operation to trip the low-voltage circuit breaker, a shunt tripping device is usually installed inside the low-voltage circuit breaker. When the shunt tripping device When actuating, the tripping mechanism inside the low-voltage circuit breaker can be actuated to achieve the function of starting, breaking and tripping, but the function of blocking the tripping mechanism is not forcibly achieved. Therefore, when the external operating command of the low-voltage circuit breaker is activated, There will be malfunctions, which is a problem that must be improved. All low-voltage circuit breaker electric operator products in the past can not solve the above common problems.

In the conventional art, when the low-voltage circuit breaker electric operator performs external operation to trip the low-voltage circuit breaker, an under-voltage trip device can be installed inside the low-voltage circuit breaker. When the under-voltage trip device is activated, At this time, the tripping mechanism inside the low-voltage circuit breaker can be actuated to achieve the function of starting, breaking and tripping, and has the function of forcibly locking the tripping mechanism. However, when a short-term unstable power state occurs in the external circuit, or the external control power supply When disabled, there may be malfunctions The situation that causes a power outage and stops the power supply is a problem that must be improved. All low-voltage circuit breaker electric operator products in the conventional technology cannot solve the above common problems.

In the conventional art, the electric operator of the low-voltage circuit breaker does not detect the power status and is only actuated by simple external operation instructions. Therefore, when performing the closing action, the fault state of the load side of the low-voltage circuit breaker may not be eliminated, or The shunt load has not been unloaded, and the wrong closing action may be performed in the loaded state, which will cause an accident. Or when the power state has already failed, the opening and closing function is not executed, which will also cause the fault state to continue to occur, causing greater damage. The damage cannot effectively isolate the accident point. The above problems must be improved and solved. All low-voltage circuit breaker electric operator products in the existing technology cannot solve the above common problems.

In the conventional art, the main shortcoming of the low-voltage circuit breaker electric operator is that it cannot effectively detect the power status of the low-voltage circuit breaker electric operator and cannot effectively prevent malfunction regardless of the state of closing, opening, breaking, or fault. The above deficiencies , resulting in the current low-voltage circuit breaker electric operator being unable to be widely used in the market. The above problems must be improved and solved. All low-voltage circuit breaker electric operator products in the prior art cannot solve the above common problems.

The present invention is a multifunctional low-voltage circuit breaker electric operator improvement device. The purpose of the invention is to mainly improve the shortcomings of conventional techniques, which cannot meet the customers' actual electricity safety requirements and practical application functions, and provide a universal and It is a device that is simple to install, easy to operate, reliable and does not cause malfunctions, and can comply with the content requirements of international regulations. The present invention is an improved device for a multifunctional low-voltage circuit breaker electric operator, which can solve the problem of low-voltage circuit breakers in the conventional technology. Without the electric operator of the device, it can detect the power status of the power supply by itself. When a fault occurs, the status can be completely determined without causing malfunction. The locking function can be performed when the fault is eliminated. The low-voltage circuit breaker can then be reset by itself. When the power status is normal, it can automatically determine and perform the closing and opening functions without causing malfunctions, achieving safety and practicality of electricity consumption and improving economy.

In order to achieve the above object, the present invention is an improved device for an electric operator of a multifunctional low-voltage circuit breaker. A switch contact status detection and switching unit is electrically connected to the power supply side and the load side of the low-voltage circuit breaker. The switch contact status detection and switching unit The switching unit can understand the power status of the power system through an internal control circuit component and an internal microprocessor, and then set up a fault prevention malfunction unit and a time delay setting unit to prevent malfunction from occurring. According to the switch contact status The detection and interpretation of the switching unit and the status of the low-voltage circuit breaker can perform the opening or closing function when the power system is normal.

In order to achieve the above purpose, the present invention provides a multifunctional low-voltage circuit breaker electric operator improvement device with a time delay setting unit, which can improve the low-voltage circuit breaker when voltage flickers or instantaneous voltage drops occur in the power system. If there is a shunt trip device installed inside or there is insufficient power to trip the device, it will cause improper opening or closing or locking, causing inconvenience to the user. The present invention is provided with a time delay setting unit to achieve the intended function.

In order to achieve the above object, a multifunctional low-voltage circuit breaker electric operator improvement device of the present invention can be provided with a fault prevention malfunction unit, which can improve the electric operator of the low-voltage circuit breaker in the conventional art. In the maintenance state, the manual operating device is locked, resulting in malfunction. The improved device of the multifunctional low-voltage circuit breaker electric operator of the present invention is provided with the malfunction prevention unit, which can achieve the intended function.

In order to achieve the above object, a multifunctional low-voltage circuit breaker electric operator improvement device of the present invention can be provided with an external supporting power supply unit, which can improve the electric operator of the low-voltage circuit breaker in the conventional art. On the original power circuit, due to When voltage power is obtained, it may be Malfunction occurs, resulting in no stable working power supply. The improved device of the multifunctional low-voltage circuit breaker electric operator of the present invention is provided with the external support power supply unit, so that the intended function can be achieved.

In order to achieve the above purpose, a multifunctional low-voltage circuit breaker electric operator improved device includes: a low-voltage circuit breaker, an electric operating unit, a switch contact status detection and switching unit, a fault prevention malfunction unit, and a time delay setting unit , an external support power supply unit; the low-voltage circuit breaker is equipped with an operating handle for opening and closing the low-voltage circuit breaker, and the operating handle is connected to the electric operating unit; the electric operating unit includes an electric motor and a transmission mechanism, The electric operating unit operates according to the information sent by the switch contact status detection switching unit to drive the electric motor. The electric motor links the transmission mechanism. The transmission mechanism is connected with the operating handle of the low-voltage circuit breaker to achieve the low-voltage circuit breaker. The switch contact status detection switching unit includes a switch contact status detection unit and a switching control loop unit. The switch contact status detection unit has a control circuit component inside for detecting the low voltage. The voltage signal status of the contacts on the power side and the load side of the circuit breaker. There is an electronic circuit built into the control circuit component. The electronic circuit is electrically connected to the power side and the load side of the low-voltage circuit breaker, in accordance with the phase sequence. A resistor voltage-dividing rectifier element or a voltage-dividing rectifier element with multiple resistors connected in series between the ground terminals is used to sense the voltage signals on the power side and the load side of the low-voltage circuit breaker and break the low-voltage circuit. The status signals of each phase sequence of the circuit breaker with and without electricity are sent to a microprocessor in the control circuit component. The program in the microprocessor is based on the power side and the load side of the low-voltage circuit breaker being tested. The presence or absence of the voltage signal of each phase sequence is used to determine and calculate the internal contact status of the low-voltage circuit breaker, and determine whether the status of each phase contact inside the low-voltage circuit breaker is closed or open, and determine the power supply in the low-voltage circuit breaker. The switching control loop unit is electrically connected to the abnormal state of the side and the load side, such as at least one of phase loss, reverse phase, reverse phase power supply, high voltage, low voltage, internal contact welding, etc. Switch contact status detection unit, the switching control loop unit has an on-off circuit and a closed input circuit, the on-off circuit and the closed input circuit detect the microprocessor inside the switching unit according to the switch contact status The information sent by the device is electrically connected to the electric operating unit for actuation. The on-off circuit is actuated by the electric operating unit to start and break the low-voltage circuit breaker to the on-off position. The closed input circuit is actuated by the electric operating unit to close the low voltage. The circuit breaker is in the closed position; the malfunction prevention unit is equipped with a fault actuation relay, the malfunction prevention unit is electrically connected to the switch contact status detection switching unit, and the switch is inside the switch contact status detection switching unit. When the contact status detection unit detects a power abnormality, the microprocessor inside the switch contact status detection unit sends a message to activate the fault actuating relay. When the fault actuating relay is activated, the electric operating unit is electrically connected If the circuit is turned off and fails to conduct, the multifunctional low-voltage circuit breaker electric operator improvement device can be equipped with a manual operating device. When the fault actuator is activated, the manual operating device can be closed or forcibly blocked at least one of the transmission mechanisms. Item: The time delay setting unit is equipped with a time setting relay, and the time delay setting unit is electrically connected to the opening and closing circuit and the closing input circuit of the switch contact status detection and switching unit. When the opening and closing circuit When the circuit is cut off or the closed input circuit is activated, the time delay setting unit activates and conducts through the time setting relay time setting delay activation, and then is electrically connected to the electric operating unit and the malfunction prevention unit to activate; the external support power supply The unit has an input working power of an AC power supply of an uninterruptible power supply system or a DC power supply of a battery pack. The power supply of the external support power supply unit is electrically connected to the switch contact status detection and switching unit as the electric multi-functional low-voltage circuit breaker. The working power supply of the operator improvement device; when the multi-functional low-voltage circuit breaker electric operator improvement device is in a normal state, the external support power supply unit provides power, and the switching unit information is activated according to the switch contact status, and after the time delay The setting unit time setting delay activates the electric operating unit, and the electric operating unit operates The low-voltage circuit breaker is automatically closed or opened. When a fault occurs in the power circuit, the switch contact status detection and switching unit detects the fault status, and the microprocessor inside the switch contact status detection and switching unit sends a message. The fault prevention malfunction prevention unit is activated, and after the fault activation relay time delay, the start-off circuit is activated to cause the low-voltage circuit breaker to trip, and the multi-functional low-voltage circuit breaker electric operator improvement device is forcibly blocked and unable to drive the electric operation. unit to achieve the fault prevention malfunction function. When the switch contact status detection unit detects a fault and clears it, the microprocessor inside the switch contact status detection switching unit sends a message to activate the fault prevention unit and sets the relay after the time. After the time delay, the electric operating unit is automatically unlocked and restored to the normal state of the multifunctional low-voltage circuit breaker electric operating unit improvement device.

In order to achieve the above purpose, a multifunctional low-voltage circuit breaker electric operator improved device includes: a low-voltage circuit breaker, an electric operating unit, a switch contact status detection switching unit, and a fault prevention malfunction unit; the low-voltage circuit breaker device There is an operating handle for opening and closing the low-voltage circuit breaker. The operating handle is connected to the electric operating unit. The electric operating unit includes an electric motor and a transmission mechanism. The electric operating unit detects the switch contact status according to the The information sent by the switching unit is activated to drive the electric motor, and the electric motor links the transmission mechanism. The transmission mechanism is connected with the operating handle of the low-voltage circuit breaker to achieve the opening and closing functions of the low-voltage circuit breaker; the switch is connected The point status detection switching unit includes a switch contact status detection unit and a switching control loop unit. The switch contact status detection unit has a control circuit component inside for detecting the power side and load side contacts of the low-voltage circuit breaker. Voltage signal state, the control circuit component contains an electronic circuit, the electronic circuit is electrically connected to the power side and the load side of the low-voltage circuit breaker, and a resistor voltage dividing rectifier is connected in series between each phase sequence and the ground terminal. The component may be a voltage dividing rectifier component having a plurality of resistors connected in series to sense the connection between the power side of the low-voltage circuit breaker and the The voltage signal on the load side sends the status signal of each phase sequence of the low-voltage circuit breaker with power and without power to a microprocessor inside the control circuit component. The program in the microprocessor is based on the detected The status of the voltage signals of each phase sequence of the power supply side and the load side of the low-voltage circuit breaker is used to determine and calculate the internal contact status of the low-voltage circuit breaker, and to determine whether the internal contact status of each phase of the low-voltage circuit breaker is closed or open. , and determine the abnormal status of the power side and the load side of the low-voltage circuit breaker, such as at least one of phase loss, reverse phase, reverse phase power supply, high voltage, low voltage, internal contact welding, etc., the switching control loop unit Electrically connected to the switch contact status detection unit, the switching control loop unit has an on-off circuit and a closed input circuit. The on-off circuit and the closed input circuit detect switching according to the switch contact status. The information sent by the microprocessor inside the unit is electrically connected to the electric operating unit. The opening and closing circuit is activated by the electric operating unit to start and break the low-voltage circuit breaker to the opening position. The closed input circuit is operated by the electric operation unit. The unit operates to close the low-voltage circuit breaker to the closed position; the malfunction prevention unit is equipped with a fault actuation relay, and the malfunction prevention unit is electrically connected to the switch contact status detection and switching unit, and the switch contact status detection and switching unit When the switch contact status detection unit inside the switching unit detects power abnormality, the microprocessor inside the switch contact status detection unit sends a message to activate the fault actuating relay. When the fault actuating relay is activated, the electric operation If the circuit electrically connected to the unit is turned on and off and does not conduct, the multifunctional low-voltage circuit breaker electric operator improvement device can be equipped with a manual operating device. When the fault actuating relay is activated, the manual operating device can be closed or the transmission is forced to be blocked. At least one of the above mechanisms; the multifunctional low-voltage circuit breaker electric operator improvement device. When the power is in a normal state, the low-voltage circuit breaker and the electric operation unit detect the switching contact status according to the switch contact state. The microprocessor inside the switching unit sends out a message Activate to achieve the normal closing and opening of the low-voltage circuit breaker. When a power failure occurs, the microprocessor inside the switch contact status detection switching unit sends a message to The fault prevention malfunction prevention unit is activated, and the multifunctional low-voltage circuit breaker electric operator improvement device is forcibly blocked and unable to drive the electric operation unit to achieve the fault prevention malfunction function. When the power fault is eliminated, the switch contact status is detected inside the switching unit. The microprocessor sends a message to activate the malfunction prevention unit to release the lock and restore the function of the multifunctional low-voltage circuit breaker electric operator improvement device to its normal state.

10: Improved device for multifunctional low-voltage circuit breaker electric operator

11:Low voltage circuit breaker

12: Electric operating unit

13: Switch contact status detection switching unit

14: Fault prevention malfunction unit

15: Time delay setting unit

16:External support power supply unit

17: Operating handle

18: Electric motor

19: Transmission mechanism

20: Switch contact status detection unit

21: Switching control loop unit

22:Control circuit components

23:Power side

24:Load side

25: Electronic circuits

26:Microprocessor

27: Start and break the circuit

28: Close input loop

29:Fault activated relay

30: Manual operating device

31: Time setting relay

32: Uninterruptible power supply system

33:Battery pack

[Figure 1] is a schematic configuration diagram of the first embodiment of an improved device for a multifunctional low-voltage circuit breaker electric operator according to the present invention.

[Figure 2] is a schematic configuration diagram of the second embodiment of an improved device for a multifunctional low-voltage circuit breaker electric operator according to the present invention.

The first embodiment of the multifunctional low-voltage circuit breaker electric operator improvement device 10 of the present invention is shown in Figure 1. A multifunctional low-voltage circuit breaker electric operator improvement device 10 includes: a low-voltage circuit breaker 11 and an electric operating unit 12 , a switch contact status detection switching unit 13, a fault prevention malfunction unit 14, a time delay setting unit 15, an external support power supply unit 16; the low-voltage circuit breaker 11 is equipped with opening and closing of the low-voltage circuit breaker 11 The operating handle 17 is connected to the electric operating unit 12 for operation; the electric operating unit 12 includes an electric motor 18 and a transmission mechanism 19, and the electric operating unit 12 detects the switching unit 13 according to the switch contact state. The sent information is activated to drive the electric motor 18. The electric motor 18 links the transmission mechanism 19. The transmission mechanism 19 is connected with the operating handle 17 of the low-voltage circuit breaker 11 to achieve the opening and closing functions of the low-voltage circuit breaker 11. ; The switch contact status detection switching unit 13 includes a switch contact status detection unit 20 and a switching control loop unit 21. The switch contact status detection unit 20 There is a control circuit component 22 for detecting the voltage signal status of the contact point between the power side 23 and the load side 24 of the low-voltage circuit breaker 11. The control circuit component 22 contains an electronic circuit 25, and the electronic circuit 25 is electrically connected to the The power supply side 23 and the load side 24 of the low-voltage circuit breaker 11 are connected in series with a resistor voltage-dividing rectifier element or a voltage-dividing rectifier element with a plurality of resistors connected in series between each phase sequence and the ground terminal for sensing. The voltage signals on the power side 23 and the load side 24 of the low-voltage circuit breaker 11 are measured, and the status signals of the power and no power in each phase sequence of the low-voltage circuit breaker 11 are sent to a microprocessor 26 in the control circuit component 22 , the internal program of the microprocessor 26 determines and calculates the internal contacts of the low-voltage circuit breaker 11 based on the detected voltage signals of the power side 23 and the load side 24 of each phase sequence. status, and determine the status of each phase contact inside the low-voltage circuit breaker 11, whether it is closed or open, and determine the abnormal status of the power side 23 and the load side 24 in the low-voltage circuit breaker 11, such as phase loss, reverse phase, At least one of inverting power supply, high voltage, low voltage, internal contact welding, etc., the switching control loop unit 21 is electrically connected to the switch contact status detection unit 20, and the switching control loop unit 21 has an on/off The cut-off circuit 27 and a closed input circuit 28 are electrically connected to the electric motor according to the information sent by the microprocessor 26 in the switching unit 13 according to the status of the switch contact. The operating unit 12 is activated, the on-off circuit 27 is activated through the electric operating unit 12 to start and interrupt the low-voltage circuit breaker 11 to the on-off position, and the closing input circuit 28 is activated through the electric operating unit 12 to close the low-voltage circuit breaker 11 to Closed position; the fault prevention malfunction unit 14 is equipped with a fault activation relay 29. The fault prevention unit 14 is electrically connected to the switch contact status detection switching unit 13. The switch contact status detection switching unit 13 is internal When the switch contact status detection unit 20 detects a power abnormality, the microprocessor 26 inside the switch contact status detection unit 20 sends a message to activate the fault actuating relay 29. When the fault actuating relay 29 is activated, the fault actuating relay 29 is activated. If the circuit electrically connected to the electric operating unit 12 is turned on and off and does not conduct, it is The functional low-voltage circuit breaker electric operator improvement device 10 can be equipped with a manual operating device 30. When the fault actuating relay 29 is activated, the manual operating device 30 can close or forcibly block at least one of the transmission mechanisms 19; at this time The delay setting unit 15 is equipped with a time setting relay 31. The time delay setting unit 15 is electrically connected to the opening and closing circuit 27 and the closing input circuit 28 of the switch contact status detection switching unit 13. When the When the opening and closing circuit 27 or the closed input circuit 28 is activated, the time delay setting unit 15 is activated and the time setting relay 31 is turned on through the time setting delay activation, and then is electrically connected to the electric operating unit 12 and the fault prevention malfunction. The unit 14 is activated; the external support power supply unit 16 has an input working power of an AC power supply of an uninterruptible power supply system 32 or a DC power supply of a battery pack 33. The power supply of the external support power supply unit 16 and the switch contact status detection switching The unit 13 is electrically connected as the working power supply of the multi-function low-voltage circuit breaker electric operator improvement device 10; when the multi-function low-voltage circuit breaker electric operator improvement device 10 is in a normal state, the external support power supply unit 16 provides electric energy. The switch contact status detection switching unit 13 activates the information, and the time delay setting unit 15 sets a time delay to activate the electric operating unit 12. The electric operating unit 12 activates to close or open the low-voltage circuit breaker 11. When the power circuit occurs In a fault state, the switch contact state detection and switching unit 13 detects the fault state, and the microprocessor 26 inside the switch contact state detection and switching unit 13 sends a message to activate the fault prevention malfunction unit 14. After the fault The actuation relay 29 delays the activation of the on-off circuit 27 to trip the low-voltage circuit breaker 11, and forcibly blocks the multi-function low-voltage circuit breaker electric operator improvement device 10 from being able to drive the electric operation unit 12 to prevent failures. Malfunction function, when the switch contact status detection unit 20 detects a fault, the microprocessor 26 inside the switch contact status detection switching unit 13 sends a message to activate the fault prevention malfunction unit 14 after the time setting relay 31 After a time delay, the electric operating unit 12 is automatically unlocked and restored to the multifunctional low-voltage circuit breaker. The function of the manual operator improvement device 10 in the normal state.

The second embodiment of the multifunctional low-voltage circuit breaker electric operator improvement device 10 of the present invention is shown in Figure 2. A multifunctional low-voltage circuit breaker electric operator improvement device 10 includes: a low-voltage circuit breaker 11 and an electric operating unit 12 , a switch contact status detection switching unit 13, a fault prevention malfunction unit 14; the low-voltage circuit breaker 11 is equipped with an operating handle 17 for opening and closing the low-voltage circuit breaker 11, and the operating handle 17 is connected with the electric operation The unit 12 is connected to act; the electric operating unit 12 includes an electric motor 18 and a transmission mechanism 19. The electric operating unit 12 detects the information sent by the switching unit 13 according to the switch contact status and operates to drive the electric motor 18. The motor 18 links the transmission mechanism 19, and the transmission mechanism 19 is connected with the operating handle 17 of the low-voltage circuit breaker 11 to achieve the opening and closing functions of the low-voltage circuit breaker 11; the switch contact status detection switching unit 13 includes a The switch contact status detection unit 20 and a switching control loop unit 21 have a control circuit component 22 inside the switch contact status detection unit 20 for detecting the voltage of the contact points of the power supply side 23 and the load side 24 of the low-voltage circuit breaker 11 In the signal state, the control circuit component 22 contains an electronic circuit 25. The electronic circuit 25 is electrically connected to the power side 23 and the load side 24 of the low-voltage circuit breaker 11, and is connected in series with the ground terminal according to the phase sequence. A resistor voltage dividing rectification element or a voltage dividing rectification element having a plurality of resistors connected in series is used to sense the voltage signals of the power side 23 and the load side 24 of the low-voltage circuit breaker 11, and connect each of the low-voltage circuit breaker 11 to each other. The status signals of the phase sequence with and without power are sent to a microprocessor 26 built into the control circuit component 22. The program inside the microprocessor 26 is based on the tested low-voltage circuit breaker 11, the power side 23 and Whether the voltage signal of each phase sequence of the load side 24 is in a state is used to determine and calculate the internal contact state of the low-voltage circuit breaker 11, and determine whether the state of each phase contact inside the low-voltage circuit breaker 11 is closed or open, and determine whether the contact state of the low-voltage circuit breaker 11 is open or closed. Abnormal status of the power side 23 and the load side 24 of the low-voltage circuit breaker 11, such as phase loss, reverse phase, reverse power supply, high voltage, low voltage, At least one of internal contact welding, etc., the switching control loop unit 21 is electrically connected to the switch contact status detection unit 20. The switching control loop unit 21 has an opening and closing circuit 27 and a closing input circuit 28. , the opening and closing circuit 27 and the closed input circuit 28 are electrically connected to the electric operating unit 12 for activation according to the information sent by the microprocessor 26 inside the switch contact state detection switching unit 13, and the opening and closing circuit 28 is activated. The circuit 27 is activated by the electric operating unit 12 to start and break the low-voltage circuit breaker 11 to the open-off position, and the closed input circuit 28 is activated by the electric operating unit 12 to close the low-voltage circuit breaker 11 to the closed position; the fault prevention malfunction unit 14 is equipped with A fault activation relay 29 is provided. The fault prevention malfunction unit 14 is electrically connected to the switch contact status detection switching unit 13. The switch contact status detection unit 20 inside the switch contact status detection switching unit 13 detects When the power is abnormal, the microprocessor 26 inside the switch contact status detection unit 20 sends a message to activate the fault activating relay 29. When the fault activating relay 29 is activated, the electric operating unit 12 is electrically connected to the circuit. If there is no conduction when starting and breaking, the multifunctional low-voltage circuit breaker electric operator improvement device 10 can be equipped with a manual operating device 30. When the fault actuating relay 29 is activated, the manual operating device 30 can be closed or forcibly blocked above the transmission mechanism 19. At least one of them; the multifunctional low-voltage circuit breaker electric operator improvement device 10. When the power is in a normal state, the low-voltage circuit breaker 11 and the electric operation unit 12 detect the microprocessor inside the switching unit 13 according to the switch contact status. 26 sends a message to activate to achieve the normal closing and opening of the low-voltage circuit breaker 11. When a power failure occurs, the microprocessor 26 inside the switch contact status detection switching unit 13 sends a message to activate the fault prevention malfunction unit. 14. The multifunctional low-voltage circuit breaker electric operator improvement device 10 is forcibly blocked and cannot drive the electric operation unit 12 to achieve the function of preventing malfunction. When the power fault is eliminated, the micro switch contact status detection switching unit 13 inside The processor 26 sends a message to activate the malfunction prevention unit 14 to release the lock and restore the multifunctional low-voltage circuit breaker electric operator improvement device 10 to normal. status function.

To sum up, the present invention has a multifunctional low-voltage circuit breaker electric operator improvement device, which further improves the stability and safety of the power supply system and has great industrial applicability. Furthermore, after checking the relevant products on the market and approved patent announcements, we found no products with the same essential technical features as the present invention, which also meet the statutory patent application requirements of novelty and advancement. To file a patent application in accordance with the law, we sincerely request the review committee to grant the patent to 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 invention and cannot be used to limit the scope of rights of the invention. Any equivalent changes or modifications made in accordance with the spirit of the invention are still covered by the patent application scope of the invention. middle.

10: Improved device for multifunctional low-voltage circuit breaker electric operator

11:Low voltage circuit breaker

12: Electric operating unit

13: Switch contact status detection switching unit

14: Fault prevention malfunction unit

15: Time delay setting unit

16:External support power supply unit

17: Operating handle

18: Electric motor

19: Transmission mechanism

20: Switch contact status detection unit

21: Switching control loop unit

22:Control circuit components

23:Power side

24:Load side

25: Electronic circuits

26:Microprocessor

27: Start and break the circuit

28: Close input loop

29:Fault activated relay

30: Manual operating device

31: Time setting relay

32: Uninterruptible power supply system

33:Battery pack

Claims (2)

An improved device for a multifunctional low-voltage circuit breaker electric operator, including: a low-voltage circuit breaker, an electric operating unit, a switch contact status detection and switching unit, a malfunction prevention unit, a time delay setting unit, and an external support power supply unit; the low-voltage circuit breaker is equipped with an operating handle for opening and closing the low-voltage circuit breaker, and the operating handle is connected to the electric operating unit; the electric operating unit includes an electric motor and a transmission mechanism, and the electric operating unit operates in accordance with The switch contact status detection switching unit activates the information to drive the electric motor. The electric motor links the transmission mechanism. The transmission mechanism is connected with the operating handle of the low-voltage circuit breaker to achieve the opening and closing of the low-voltage circuit breaker. Function; the switch contact status detection and switching unit includes a switch contact status detection unit and a switching control loop unit. There is a control circuit component inside the switch contact status detection unit for detecting the power side of the low-voltage circuit breaker. According to the voltage signal state of the contact point on the load side, the control circuit component contains an electronic circuit. The electronic circuit is electrically connected to the power side and the load side of the low-voltage circuit breaker, and is connected in series with the ground terminal according to the phase sequence. Connect a resistor voltage dividing rectification element or a voltage dividing rectification element with a plurality of resistors connected in series to sense the voltage signals on the power side and the load side of the low-voltage circuit breaker, and sequence the phases of the low-voltage circuit breaker. The status signal of power or no power is sent to a microprocessor in the control circuit component. The program in the microprocessor is based on the voltage of each phase sequence of the power side and the load side of the low-voltage circuit breaker being tested. The presence or absence of the signal is used to determine and calculate the internal contact status of the low-voltage circuit breaker, and determine whether the contact status of each phase inside the low-voltage circuit breaker is closed or open, and determine the power side and the load side of the low-voltage circuit breaker. Abnormal conditions, such as out of phase, reverse phase, reverse phase At least one of power supply, high voltage, low voltage, internal contact welding, etc., the switching control loop unit is electrically connected to the switch contact status detection unit, and the switching control loop unit has an opening and closing circuit and a The input circuit is closed. The on-off circuit and the closed input circuit are electrically connected to the electric operating unit based on the information sent by the microprocessor inside the switch contact state detection switch unit. The on-off circuit is activated by The electric operating unit actuates the low-voltage circuit breaker to the open-off position, and the closed input circuit actuates the low-voltage circuit breaker to the closed position through the electric operating unit; the malfunction prevention unit is equipped with a fault actuating relay. The malfunction prevention unit is electrically connected to the switch contact status detection and switching unit. When the switch contact status detection unit inside the switch contact status detection unit detects a power abnormality, the switch contact status detection unit internally detects the power abnormality. The microprocessor sends a message to activate the fault actuating relay. When the fault actuating relay is activated, the circuit electrically connected to the electric operating unit is turned on and off and does not conduct. The multifunctional low-voltage circuit breaker electric operator improvement device can be equipped with a A manual operating device, which can close or forcibly block at least one of the above transmission mechanisms when the fault actuating relay is activated; the time delay setting unit is equipped with a time setting relay, and the time delay setting unit circuit The on-off cut-off circuit and the closed input circuit are sexually connected to the switch contact status detection switching unit. When the on-off cut-off circuit or the closed input circuit is activated, the time delay setting unit is activated by the time setting The relay time is set to delay the activation and conduction, and then is electrically connected to the electric operating unit and the malfunction prevention unit to activate; the external support power supply unit has an input working power of an AC power supply of an uninterruptible power supply system or a DC power supply of a battery pack. , the power supply of the external support power supply unit and the switch contact state The status detection switching unit is electrically connected as the working power supply of the multi-function low-voltage circuit breaker electric operator improvement device; when the multi-function low-voltage circuit breaker electric operator improvement device is in a normal state, the external support power supply unit provides power, according to The switch contact status detects the switching unit information and activates the electric operating unit after the time delay setting unit time setting delay. The electric operating unit activates to close or open the low-voltage circuit breaker. When a fault occurs in the power circuit, the The switch contact status detection switching unit detects a fault status, and the microprocessor inside the switch contact status detection switching unit sends a message to activate the fault prevention malfunction unit, and after the fault activation relay time delay, the start/stop is activated. Cutting off the circuit causes the low-voltage circuit breaker to trip, and the multifunctional low-voltage circuit breaker electric operator improvement device is forcibly blocked and unable to drive the electric operation unit, thereby achieving the fault prevention function of malfunction. When the switch contact status detection unit detects a fault When troubleshooting, the microprocessor inside the switch contact status detection and switching unit sends a message to activate the fault prevention unit. After the time delay of the set relay time, the electric operating unit is automatically unlocked and restored to the multifunctional low-voltage circuit breaker. The electric operator improves the function of the device in its normal state. An improved device for a multifunctional low-voltage circuit breaker electric operator, including: a low-voltage circuit breaker, an electric operating unit, a switch contact status detection and switching unit, and a fault prevention malfunction unit; the low-voltage circuit breaker is equipped with a start-off and Close an operating handle of the low-voltage circuit breaker. The operating handle is connected to the electric operating unit. The electric operating unit includes an electric motor and a transmission mechanism. The electric operating unit detects the signal generated by the switching unit according to the switch contact status. The information is activated to drive the electric motor, and the The electric motor links the transmission mechanism, and the transmission mechanism is connected with the operating handle of the low-voltage circuit breaker to achieve the opening and closing functions of the low-voltage circuit breaker; the switch contact status detection and switching unit includes a switch contact status detection unit With a switching control loop unit, the switch contact status detection unit has a control circuit component inside for detecting the voltage signal status of the power supply side and load side contacts of the low-voltage circuit breaker. There is an electronic circuit inside the control circuit component, The electronic circuit is electrically connected to the power side and the load side of the low-voltage circuit breaker, and a resistor voltage-dividing rectifier element or a voltage-dividing rectifier with multiple resistors connected in series between each phase sequence and the ground terminal is connected electrically. The component is used to sense the voltage signals on the power side and the load side of the low-voltage circuit breaker, and send the status signals of the power and no power in each phase sequence of the low-voltage circuit breaker to a microprocessor in the control circuit component, The program in the microprocessor determines and calculates the internal contact status of the low-voltage circuit breaker based on the status of the voltage signals of each phase sequence of the power supply side and the load side of the low-voltage circuit breaker being tested, and determines the low-voltage circuit breaker. The status of each phase contact inside the circuit breaker is whether the conduction is closed or the open circuit is open, and the abnormal status of the power side and the load side of the low-voltage circuit breaker is determined, such as phase loss, reverse phase, reverse phase power supply, high voltage, low voltage, internal At least one of contact welding, etc., the switching control loop unit is electrically connected to the switch contact status detection unit, the switching control loop unit has an opening and closing circuit and a closing input circuit, the opening and closing circuit The circuit and the closed input circuit are electrically connected to the electric operating unit to activate the information sent by the microprocessor inside the switching unit according to the switch contact status detection, and the on-off circuit is activated to start and cut off the low voltage through the electric operating unit. The circuit breaker reaches the opening and breaking position, and the closed input circuit is actuated by the electric operating unit to close the low-voltage circuit breaker to the closing position; the malfunction prevention unit is equipped with a fault actuation relay, and the malfunction prevention unit The element is electrically connected to the switch contact status detection and switching unit. When the switch contact status detection unit inside the switch contact status detection unit detects power abnormality, the microprocessor inside the switch contact status detection unit The device sends a message to activate the fault actuating relay. When the fault actuating relay is activated, the circuit electrically connected to the electric operating unit is turned on and off and does not conduct. The multifunctional low-voltage circuit breaker electric operator improvement device can be equipped with a manual operation device, when the fault actuating relay is activated, the manual operating device can close or forcibly block at least one of the above transmission mechanisms; the multifunctional low-voltage circuit breaker electric operator improvement device When the power is in a normal state, the low-voltage circuit breaker The microprocessor in the electric operating unit detects and switches the switch contact status according to the information and operates to achieve the normal closing and opening of the low-voltage circuit breaker. When a power failure occurs, the switch contact status detection and switching unit The microprocessor inside the cutting unit sends a message to activate the fault prevention malfunction unit, and the multifunctional low-voltage circuit breaker electric operator improvement device is forcibly blocked and unable to drive the electric operation unit, thereby achieving the fault prevention malfunction function. When the power fault is eliminated, The microprocessor inside the switch contact status detection and switching unit sends out information to activate the malfunction prevention unit to release the lock and restore the function of the multifunctional low-voltage circuit breaker electric operator improvement device to its normal state.

Images