Voltage, current and temperature detection alarm system for low-voltage intelligent switch

Abstract

The invention discloses a voltage, current and temperature detection alarm system for a low-voltage intelligent switch. The system is used for solving the technical problem that an existing voltage, current and temperature detection alarm technology for the low-voltage intelligent switch causes too high operation and maintenance cost and time cost of operation and maintenance personnel. The system comprises a voltage detection assembly, a current detection assembly, a temperature detection assembly and a controller which are arranged in the low-voltage intelligent switch, and an alarm arranged on the low-voltage intelligent switch. The voltage detection assembly detects the three-phase voltage of the wire inlet side; the current detection assembly detects the three-phase current of the wire outlet side; the temperature detection assembly detects the three-phase temperature of the incoming and outgoing line side; and the controller sends out corresponding alarm information according to comparison results of the three-phase voltage, the three-phase current, the three-phase temperature of the incoming and outgoing line side and associated set values.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage intelligent switches, and in particular to a voltage, current and temperature detection and alarm system for low-voltage intelligent switches. Background Art

[0002] At present, low-voltage intelligent switches only have the functions of opening and closing and overload protection tripping. If the current and voltage conditions need to be monitored, the operator needs to use a clamp meter to measure. When obtaining temperature data, an infrared temperature gun or infrared imager is also required, which greatly increases the operation and maintenance costs and time costs of the operation and maintenance personnel. If the operation and maintenance is not timely, there will be safety hazards. Summary of the invention

[0003] The present invention provides a voltage, current and temperature detection and alarm system for a low-voltage intelligent switch, which is used to solve the technical problem that the existing voltage, current and temperature detection and alarm technology for low-voltage intelligent switches manually detects voltage, current and temperature, resulting in excessively high operation and maintenance costs and time costs for operation and maintenance personnel.

[0004] Specifically, the present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides a voltage, current and temperature detection alarm system for a low-voltage intelligent switch, comprising a voltage detection component, a current detection component, a temperature detection component and a controller integrated in a low-voltage intelligent switch body, and an alarm device arranged on the low-voltage intelligent switch body;

[0006] The voltage detection component is used to detect the A-phase voltage, the B-phase voltage and the C-phase voltage on the incoming line side of the low-voltage intelligent switch body and transmit them to the controller;

[0007] The current detection component is used to detect the A-phase current, the B-phase current and the C-phase current on the outgoing line side of the low-voltage intelligent switch body and transmit them to the controller;

[0008] The temperature detection component is used to detect the A-phase temperature, the B-phase temperature and the C-phase temperature on the incoming line side and the A-phase temperature, the B-phase temperature and the C-phase temperature on the outgoing line side in the low-voltage intelligent switch body and transmit them to the controller;

[0009] The controller is used to analyze the relationship between the A-phase voltage, the B-phase voltage and the C-phase voltage and the set voltage range. When any one of the A-phase voltage, the B-phase voltage and the C-phase voltage is less than the lower limit of the set voltage range, the alarm device is controlled to issue an alarm message that the voltage is unqualified or undervoltage; when any one of the A-phase voltage, the B-phase voltage and the C-phase voltage is greater than the upper limit of the set voltage range, the alarm device is controlled to issue an alarm message that the voltage is unqualified or overvoltage;

[0010] The controller is also used to analyze the relationship between the A-phase current, the B-phase current and the C-phase current and the set current value, and when any current among the A-phase current, the B-phase current and the C-phase current is greater than the set current value, control the alarm device to issue an alarm message of line overload;

[0011] The controller is also used to analyze the relationship between the A-phase temperature, B-phase temperature and C-phase temperature on the incoming line side and the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing line side and the set temperature value. When any of the A-phase temperature, B-phase temperature and C-phase temperature on the incoming line side and the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing line side is greater than the set temperature value, the alarm device is controlled to issue an alarm message of overtemperature.

[0012] Preferably, the controller is also used to analyze the relationship between the A-phase temperature, the B-phase temperature and the C-phase temperature on the incoming line side and the A-phase temperature, the B-phase temperature and the C-phase temperature on the outgoing line side and the set temperature value. When any of the A-phase temperature, the B-phase temperature and the C-phase temperature on the incoming line side is greater than the set temperature value, the alarm device is controlled to issue an alarm message that the temperature on the incoming line side is too high. When any of the A-phase temperature, the B-phase temperature and the C-phase temperature on the outgoing line side is greater than the set temperature value, the alarm device is controlled to issue an alarm message that the temperature on the outgoing line side is too high.

[0013] Preferably, the system further comprises a communication module integrated into the low-voltage intelligent switch body;

[0014] The controller is also used to upload the A-phase voltage, the B-phase voltage, the C-phase voltage and the corresponding alarm information to the cloud platform for storage through the communication module and the external gateway, upload the A-phase current, the B-phase current, the C-phase current and the corresponding alarm information to the cloud platform for storage through the communication module and the external gateway, and upload the A-phase temperature, the B-phase temperature and the C-phase temperature on the incoming line side and the A-phase temperature, the B-phase temperature and the C-phase temperature on the outgoing line side and the corresponding alarm information to the cloud platform for storage through the communication module and the external gateway.

[0015] Preferably, the communication module adopts a Bluetooth module or a WIFI module.

[0016] Preferably, the voltage detection component includes an A-phase voltage sensor, a B-phase voltage sensor and a C-phase voltage sensor;

[0017] The A-phase voltage sensor is used to detect the A-phase voltage on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller;

[0018] The B-phase voltage sensor is used to detect the B-phase voltage on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller;

[0019] The C-phase voltage sensor is used to detect the C-phase voltage on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller.

[0020] Preferably, the current detection component includes an A-phase current transformer, a B-phase current transformer and a C-phase current transformer;

[0021] The A-phase current transformer is used to detect the A-phase current on the outgoing line side of the low-voltage intelligent switch body and transmit it to the controller;

[0022] The B-phase current transformer is used to detect the B-phase current on the outgoing line side of the low-voltage intelligent switch body and transmit it to the controller;

[0023] The C-phase current transformer is used to detect the C-phase current on the outgoing line side of the low-voltage intelligent switch body and transmit it to the controller.

[0024] Preferably, the temperature detection assembly includes an A-phase incoming line temperature sensor, a B-phase incoming line temperature sensor, a C-phase incoming line temperature sensor, an A-phase outgoing line temperature sensor, a B-phase outgoing line temperature sensor and a C-phase outgoing line temperature sensor;

[0025] The A-phase incoming line temperature sensor is used to detect the A-phase temperature on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller;

[0026] The B-phase incoming line temperature sensor is used to detect the B-phase temperature on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller;

[0027] The C-phase incoming line temperature sensor is used to detect the C-phase temperature on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller;

[0028] The A-phase outlet temperature sensor is used to detect the A-phase temperature on the outlet side of the low-voltage intelligent switch body and transmit it to the controller;

[0029] The B-phase outlet temperature sensor is used to detect the B-phase temperature on the outlet side of the low-voltage intelligent switch body and transmit it to the controller;

[0030] The C-phase outlet temperature sensor is used to detect the C-phase temperature on the outlet side of the low-voltage intelligent switch body and transmit it to the controller.

[0031] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0032] It can be seen from the above technical solutions that the present invention has the following advantages:

[0033] The present invention integrates the voltage, current and temperature acquisition device into the low-voltage intelligent switch, and there is no need to install additional current transformers and other equipment on the line side outside the low-voltage intelligent switch. In the event of line overload, unqualified voltage, over-temperature, etc., an automatic alarm will be given, which can greatly improve the work efficiency of the operation and maintenance personnel and the equipment operation and maintenance level, thereby reducing the operation and maintenance costs and time costs of the operation and maintenance personnel, and can also promptly discover equipment safety hazards and improve the reliability of power supply to the power grid.

[0034] Through lightweight design research, the present invention integrates a voltage sensor, a current transformer, and a temperature sensor into a low-voltage intelligent switch, and connects the detected voltage signal, current signal, and temperature signal to a controller. The controller automatically analyzes the voltage signal, current signal, and temperature signal to realize alarm functions such as line overload, unqualified voltage, and excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 A structural block diagram of a voltage, current and temperature detection and alarm system for a low-voltage intelligent switch provided in a preferred embodiment of the present invention.

[0037] Figure 2 A structural block diagram of a voltage detection component provided in a preferred embodiment of the present invention.

[0038] Figure 3 A structural block diagram of a current detection component provided for a preferred embodiment of the present invention.

[0039] Figure 4 A structural block diagram of a temperature detection component provided in a preferred embodiment of the present invention.

[0040] The meanings of the symbols in the accompanying drawings are as follows:

[0041] 10. Voltage detection component; 20. Current detection component; 30. Temperature detection component; 40. Controller; 50. Communication module; 60. Alarm; 100. Low-voltage intelligent switch body; 200. Gateway; 300. Cloud platform; 11. Phase A voltage sensor; 12. Phase B voltage sensor; 13. Phase C voltage sensor; 21. Phase A current transformer; 22. Phase B current transformer; 23. Phase C current transformer; 31. Phase A incoming line temperature sensor; 32. Phase B incoming line temperature sensor; 33. Phase C incoming line temperature sensor; 34. Phase A outgoing line temperature sensor; 35. Phase B outgoing line temperature sensor; 36. Phase C outgoing line temperature sensor. DETAILED DESCRIPTION

[0042] An embodiment of the present invention provides a voltage, current and temperature detection and alarm system for a low-voltage intelligent switch, which is used to solve the technical problem that the existing voltage, current and temperature detection and alarm technology for low-voltage intelligent switches manually detects voltage, current and temperature, resulting in excessively high operation and maintenance costs and time costs for operation and maintenance personnel.

[0043] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] like Figure 1 As shown, the present embodiment provides a voltage, current and temperature detection and alarm system for a low-voltage intelligent switch, which includes a voltage detection component 10, a current detection component 20, a temperature detection component 30, a controller 40 and a communication module 50 (such as a Bluetooth module or a WIFI (Wireless Fidelity Module) module) integrated in a low-voltage intelligent switch body 100, and an alarm 60 arranged on the low-voltage intelligent switch body 100.

[0045] Among them, Figure 2 As shown, the voltage detection component 10 includes an A-phase voltage sensor 11, a B-phase voltage sensor 12 and a C-phase voltage sensor 13; the A-phase voltage sensor 11 is used to detect the A-phase voltage on the incoming line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; the B-phase voltage sensor 12 is used to detect the B-phase voltage on the incoming line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; the C-phase voltage sensor 13 is used to detect the C-phase voltage on the incoming line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40.

[0046] like Figure 3 As shown, the current detection component 20 includes an A-phase current transformer 21, a B-phase current transformer 22 and a C-phase current transformer 23; the A-phase current transformer 21 is used to detect the A-phase current on the outgoing line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; the B-phase current transformer 22 is used to detect the B-phase current on the outgoing line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; the C-phase current transformer 23 is used to detect the C-phase current on the outgoing line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40.

[0047] like Figure 4 As shown, the temperature detection component 30 includes an A-phase incoming line temperature sensor 31, a B-phase incoming line temperature sensor 32, a C-phase incoming line temperature sensor 33, an A-phase outgoing line temperature sensor 34, a B-phase outgoing line temperature sensor 35, and a C-phase outgoing line temperature sensor 36; the A-phase incoming line temperature sensor 31 is used to detect the A-phase temperature on the incoming line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; the B-phase incoming line temperature sensor 32 is used to detect the B-phase temperature on the incoming line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; the C-phase incoming line temperature sensor 33 is used to detect the B-phase temperature on the incoming line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; The line temperature sensor 33 is used to detect the C-phase temperature on the incoming line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; the A-phase outgoing line temperature sensor 34 is used to detect the A-phase temperature on the outgoing line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; the B-phase outgoing line temperature sensor 35 is used to detect the B-phase temperature on the outgoing line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40; the C-phase outgoing line temperature sensor 36 is used to detect the C-phase temperature on the outgoing line side of the low-voltage intelligent switch body 100 and transmit it to the controller 40.

[0048] The controller 40 is used to analyze the relationship between the A-phase voltage, the B-phase voltage and the C-phase voltage and the set voltage range. When any of the A-phase voltage, the B-phase voltage and the C-phase voltage is less than the lower limit of the set voltage range, the alarm device 60 is controlled to issue an alarm message that the voltage is unqualified and undervoltage. When any of the A-phase voltage, the B-phase voltage and the C-phase voltage is greater than the upper limit of the set voltage range, the alarm device 60 is controlled to issue an alarm message that the voltage is unqualified and overvoltage. If the A-phase voltage, the B-phase voltage and the C-phase voltage are all within the set voltage range, that is, if the A-phase voltage, the B-phase voltage and the C-phase voltage are all greater than or equal to the lower limit of the set voltage range, the alarm device 60 is not controlled to issue an alarm message that the voltage is unqualified and undervoltage. If the A-phase voltage, the B-phase voltage and the C-phase voltage are all less than or equal to the upper limit of the set voltage range, the alarm device 60 is not controlled to issue an alarm message that the voltage is unqualified and overvoltage. The set voltage range can be set as needed, and the present invention is not limited thereto.

[0049] The controller 40 is also used to analyze the relationship between the A-phase current, the B-phase current and the C-phase current and the set current value. When any current among the A-phase current, the B-phase current and the C-phase current is greater than the set current value, the alarm device 60 is controlled to issue an alarm message of line overload. If each of the A-phase current, the B-phase current and the C-phase current is less than or equal to the set current value, the alarm device 60 is not controlled to issue an alarm message of line overload. The set current value can be set as needed, and the present invention is not limited thereto.

[0050] The controller 40 is also used to analyze the relationship between the A-phase temperature, B-phase temperature and C-phase temperature on the incoming line side and the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing line side and the set temperature value. The set temperature value includes a set incoming line temperature value and a set outgoing line temperature value. When any of the A-phase temperature, B-phase temperature and C-phase temperature on the incoming line side is greater than the set incoming line temperature value, the control alarm 60 issues an alarm message that the incoming line temperature is too high. When any of the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing line side is greater than the set outgoing line temperature value, the control alarm 60 issues an alarm message that the outgoing line temperature is too high. If each of the A-phase temperature, B-phase temperature and C-phase temperature on the incoming line side is less than or equal to the set incoming line temperature value, the alarm device 60 is not controlled to issue an alarm message that the incoming line temperature is too high; if each of the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing line side is less than or equal to the set outgoing line temperature value, the alarm device 60 is not controlled to issue an alarm message that the outgoing line temperature is too high. The set incoming line temperature value and the set outgoing line temperature value can be set as needed, and the present invention is not limited thereto.

[0051] The controller 40 is also used to upload the A-phase voltage, B-phase voltage and C-phase voltage and corresponding alarm information to the cloud platform 300 for storage through the communication module 50 and the external gateway 200, upload the A-phase current, B-phase current and C-phase current and corresponding alarm information to the cloud platform 300 for storage through the communication module 50 and the external gateway 200, and upload the A-phase temperature, B-phase temperature and C-phase temperature on the incoming side and the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing side and corresponding alarm information to the cloud platform 300 for storage through the communication module 50 and the external gateway 200.

[0052] In an embodiment of the present invention, the present invention proposes a voltage, current and temperature detection alarm system for a low-voltage intelligent switch, comprising a voltage detection component, a current detection component, a temperature detection component and a controller arranged in the low-voltage intelligent switch, and an alarm arranged on the low-voltage intelligent switch; the voltage detection component detects the three-phase voltage on the incoming line side; the current detection component detects the three-phase current on the outgoing line side; the temperature detection component detects the three-phase temperature on the incoming and outgoing line sides; the controller analyzes the three-phase voltage, and when any voltage of the three-phase voltage is less than the lower limit of the set voltage range, the alarm is controlled to issue an alarm message that the voltage is undervoltage, and when any voltage is greater than the upper limit of the set voltage range, the alarm is controlled to issue an alarm message that the voltage is overvoltage; the three-phase current is analyzed, and when any current of the three-phase current is greater than the set current value, the alarm is controlled to issue an alarm message of line overload; the three-phase temperature on the incoming and outgoing line sides is analyzed, and when any temperature of the three-phase temperature on the incoming and outgoing line sides is greater than the set temperature value, the alarm is controlled to issue an alarm message of overtemperature. Based on the above scheme, the present invention integrates the voltage, current and temperature acquisition device into the low-voltage intelligent switch, and there is no need to install additional current transformers and other equipment on the line side outside the low-voltage intelligent switch, and the collected voltage, current and temperature data can be uploaded to the cloud platform. In the event of line overload, voltage failure, excessive temperature and other situations, an automatic alarm will be given, which can greatly improve the work efficiency of the operation and maintenance personnel and the equipment operation and maintenance level, thereby reducing the operation and maintenance costs and time costs of the operation and maintenance personnel, and can also timely discover equipment safety hazards and improve the reliability of power supply to the power grid. At the same time, the present invention integrates the voltage sensor, current transformer, and temperature sensor into the low-voltage intelligent switch through lightweight design research, and connects the detected voltage signal, current signal, and temperature signal to the controller. The controller uploads the collected voltage signal, current signal, and temperature signal to the cloud storage through the communication interface, and automatically analyzes the voltage signal, current signal, and temperature signal to realize the alarm functions such as line overload, voltage failure, and excessive temperature.

[0053] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A voltage, current and temperature detection and alarm system for low-voltage intelligent switches, characterized in that: It includes a voltage detection component, a current detection component, a temperature detection component and a controller integrated in the low-voltage intelligent switch body, and an alarm device arranged on the low-voltage intelligent switch body; The voltage detection component is used to detect the A-phase voltage, the B-phase voltage and the C-phase voltage on the incoming line side of the low-voltage intelligent switch body and transmit them to the controller; The current detection component is used to detect the A-phase current, the B-phase current and the C-phase current on the outgoing line side of the low-voltage intelligent switch body and transmit them to the controller; The temperature detection component is used to detect the A-phase temperature, the B-phase temperature and the C-phase temperature on the incoming line side and the A-phase temperature, the B-phase temperature and the C-phase temperature on the outgoing line side in the low-voltage intelligent switch body and transmit them to the controller; The controller is used to analyze the relationship between the A-phase voltage, the B-phase voltage and the C-phase voltage and the set voltage range. When any one of the A-phase voltage, the B-phase voltage and the C-phase voltage is less than the lower limit of the set voltage range, the alarm device is controlled to issue an alarm message that the voltage is unqualified or undervoltage; when any one of the A-phase voltage, the B-phase voltage and the C-phase voltage is greater than the upper limit of the set voltage range, the alarm device is controlled to issue an alarm message that the voltage is unqualified or overvoltage; The controller is also used to analyze the relationship between the A-phase current, the B-phase current and the C-phase current and the set current value, and when any current among the A-phase current, the B-phase current and the C-phase current is greater than the set current value, control the alarm device to issue an alarm message of line overload; The controller is also used to analyze the relationship between the A-phase temperature, B-phase temperature and C-phase temperature on the incoming line side and the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing line side and the set temperature value. When any of the A-phase temperature, B-phase temperature and C-phase temperature on the incoming line side and the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing line side is greater than the set temperature value, the alarm device is controlled to issue an alarm message of overtemperature.

2. The voltage, current and temperature detection and alarm system for low-voltage intelligent switches according to claim 1 is characterized in that: The controller is also used to analyze the relationship between the A-phase temperature, B-phase temperature and C-phase temperature on the incoming line side and the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing line side and the set temperature value. When any of the A-phase temperature, B-phase temperature and C-phase temperature on the incoming line side is greater than the set temperature value, the alarm is controlled to issue an alarm message that the temperature on the incoming line side is too high. When any of the A-phase temperature, B-phase temperature and C-phase temperature on the outgoing line side is greater than the set temperature value, the alarm is controlled to issue an alarm message that the temperature on the outgoing line side is too high.

3. The voltage, current and temperature detection and alarm system for low-voltage intelligent switches according to claim 1 is characterized in that: The system also includes a communication module integrated into the low-voltage intelligent switch body; The controller is also used to upload the A-phase voltage, the B-phase voltage, the C-phase voltage and the corresponding alarm information to the cloud platform for storage through the communication module and the external gateway, upload the A-phase current, the B-phase current, the C-phase current and the corresponding alarm information to the cloud platform for storage through the communication module and the external gateway, and upload the A-phase temperature, the B-phase temperature and the C-phase temperature on the incoming line side and the A-phase temperature, the B-phase temperature and the C-phase temperature on the outgoing line side and the corresponding alarm information to the cloud platform for storage through the communication module and the external gateway.

4. The voltage, current and temperature detection and alarm system for low-voltage intelligent switches according to claim 3 is characterized in that: The communication module adopts a Bluetooth module or a WIFI module.

5. The voltage, current and temperature detection and alarm system for low-voltage intelligent switches according to claim 1, characterized in that: The voltage detection component includes an A-phase voltage sensor, a B-phase voltage sensor and a C-phase voltage sensor; The A-phase voltage sensor is used to detect the A-phase voltage on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller; The B-phase voltage sensor is used to detect the B-phase voltage on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller; The C-phase voltage sensor is used to detect the C-phase voltage on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller.

6. The voltage, current and temperature detection and alarm system for low-voltage intelligent switches according to claim 1, characterized in that: The current detection component includes an A-phase current transformer, a B-phase current transformer and a C-phase current transformer; The A-phase current transformer is used to detect the A-phase current on the outgoing line side of the low-voltage intelligent switch body and transmit it to the controller; The B-phase current transformer is used to detect the B-phase current on the outgoing line side of the low-voltage intelligent switch body and transmit it to the controller; The C-phase current transformer is used to detect the C-phase current on the outgoing line side of the low-voltage intelligent switch body and transmit it to the controller.

7. The voltage, current and temperature detection and alarm system for low-voltage intelligent switches according to claim 1, characterized in that: The temperature detection component includes an A-phase incoming line temperature sensor, a B-phase incoming line temperature sensor, a C-phase incoming line temperature sensor, an A-phase outgoing line temperature sensor, a B-phase outgoing line temperature sensor and a C-phase outgoing line temperature sensor; The A-phase incoming line temperature sensor is used to detect the A-phase temperature on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller; The B-phase incoming line temperature sensor is used to detect the B-phase temperature on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller; The C-phase incoming line temperature sensor is used to detect the C-phase temperature on the incoming line side of the low-voltage intelligent switch body and transmit it to the controller; The A-phase outlet temperature sensor is used to detect the A-phase temperature on the outlet side of the low-voltage intelligent switch body and transmit it to the controller; The B-phase outlet temperature sensor is used to detect the B-phase temperature on the outlet side of the low-voltage intelligent switch body and transmit it to the controller; The C-phase outlet temperature sensor is used to detect the C-phase temperature on the outlet side of the low-voltage intelligent switch body and transmit it to the controller.

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