Electrical fireproof current-limiting protector

Abstract

The utility model relates to the field of electrical equipment, and discloses an electrical fireproof current-limiting protector, which comprises a shell and a display screen embedded at the top of the shell, the left side of the display screen is provided with an indicator light area connected through a circuit, and the left side of the indicator light area is provided with a buzzer; the right side of the display screen is connected with a key area through a line, a terminal outlet is connected below the key area through a line, a terminal inlet is connected above the key area through a line, and a wiring terminal is arranged on the left side of the terminal outlet. The utility model aims to improve the safety of an electrical system, effectively prevents fire accidents caused by current overload, short circuit, overvoltage and undervoltage, over-temperature and electric leakage through unique appearance design and function integration, and can be used for line protection of trunks and branches at the tail ends of various power utilization places. The protector adopts an advanced current limiting technology, and when an abnormity is detected, a power supply can be rapidly cut off, electrical equipment is protected from being damaged, and fire disasters are prevented.

Description

Technical Field

[0001] The utility model relates to the field of electrical equipment, in particular to an electrical fire prevention current-limiting protector. Background Art

[0002] Traditional circuit breakers, air switches and monitoring devices have disadvantages such as large short-circuit current, long time to cut off short-circuit current, large arc sparks generated during short circuit, and short service life. Without corresponding protection and solutions, electrical fire accidents will occur, and the safety of personnel and property in the use place cannot be guaranteed. Therefore, electrical equipment must be equipped with monitoring and protection devices to protect in a short time when a fault occurs, so as to prevent the further expansion of electrical fire accidents.

[0003] CN216451145U discloses a new type of arc extinguishing electrical fire prevention current-limiting short-circuit protector, which has the advantage of being easy to maintain and solves the problem that the existing arc extinguishing electrical fire prevention current-limiting short-circuit protector is not easy to maintain. However, this protector cannot set parameters independently, and the current-limiting technology adopted is relatively backward and cannot meet the requirements of the use place. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electrical fire prevention current-limiting protector, aiming to improve the safety of the electrical system. Through a unique appearance design and function integration, it can effectively prevent fire accidents caused by current overload, short circuit, over- and under-voltage, over-temperature, and leakage. The protector adopts advanced current-limiting technology. When an abnormality is detected, it can quickly cut off the power supply to protect electrical equipment from damage and prevent the occurrence of fires at the same time.

[0005] To achieve the above purpose, the electrical fire prevention current-limiting protector of the utility model provides the following technical solutions:

[0006] It includes a display screen 8 and an indicator light area connected to the left side of the display screen 8 through a circuit. There is a buzzer 7 on the left side of the indicator light area; on the right side of the display screen 8, there is a key area 9 connected through a circuit. Below the key area 9, there is a terminal outlet connected through a circuit. Above the key area 9, there is a terminal inlet connected through a circuit. There is a wiring terminal 10 on the left side of the terminal outlet.

[0007] Preferably, in the above electrical fire prevention current-limiting protector, the protector is installed on the wall surface or inside the distribution box through a guide rail. The width of the guide rail is 35 mm. The housing 11 is provided with heat dissipation holes, and the distance between the protector and other components is not less than 30 mm.

[0008] Preferably, in the above electrical fire prevention current-limiting protector, the indicator light area is sequentially connected with an operation light 1, a communication light 2, an overload indicator light 3, a short-circuit indicator light 4, an alarm light 5, and a silencing light 6 from top to bottom.

[0009] Preferably, in the above-mentioned electrical fire prevention current-limiting protector, the terminal outlets include a live wire terminal outlet 112 and a neutral wire terminal outlet 122, and the terminal inlets include a live wire terminal inlet 111 and a neutral wire terminal inlet 121. The live wire terminal outlet 112 and the neutral wire terminal outlet 122 are weak electrical signal terminals.

[0010] Preferably, in the above-mentioned electrical fire prevention current-limiting protector, the wiring terminal 10 is a strong electrical wiring terminal.

[0011] Preferably, in the above-mentioned electrical fire prevention current-limiting protector, the operating ambient temperature range of the electrical fire prevention current-limiting protector is -10°C to +55°C, the rated current is 1 to 63A, the operating voltage is 176V to 264V, and the rated frequency is 45 to 50Hz.

[0012] The present utility model has the following beneficial effects:

[0013] 1. In the present utility model, through the cooperation among the wiring terminal, the display screen, the buttons, the interfaces and the indicator lights, the current of the power consumption circuit can be monitored in real time. When a short circuit occurs in the circuit, the current-limiting protection action can be quickly realized within 150 μs; and there are overcurrent and overheat protections; the device can also be connected to the device monitoring host, and remote monitoring and management on the cloud platform can be realized.

[0014] 2. The present utility model can be widely applied to the line protection of the end dry and branch circuits in various power consumption places such as schools, hospitals, shopping malls, hotels, entertainment venues, temples, cultural relic buildings, exhibitions, kindergartens, collective dormitories, wholesale markets, and marketplaces. The application range is wide and the protection effect is remarkable. Description of the Drawings

[0015] Figure 1 is the overall structure diagram of the present utility model;

[0016] Figure 2 is the structure diagram of the user interface of the present utility model;

[0017] Legend Explanation:

[0018] 1. Operating indicator light; 2. Communication indicator light; 3. Filter indicator light; 4. Short circuit indicator light; 5. Alarm indicator light; 6. Mute indicator light; 7. Buzzer; 8. Display screen; 9. Button area; 10. Wiring terminal; 11. Housing; 111. Live wire inlet; 112. Live wire outlet; 121. Neutral wire inlet; 122. Neutral wire outlet. Specific Embodiments

[0019] Next, the technical solutions in the present utility model application will be clearly and completely described in conjunction with the accompanying drawings in the present utility model application. Obviously, the described application is only a part of the present utility model application, rather than all of the application. Based on the application in the present utility model, all other applications obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Referring to Figure 1 and Figure 2 , the electrical fire prevention current-limiting protector disclosed in the present utility model:

[0021] As Figure 1 , 2 shown, the present application discloses an electrical fire prevention current-limiting protector, which includes a housing 11 and a display screen 8 embedded in the top of the housing. There is an indicator light area connected by a circuit on the left side of the display screen 8. There is a buzzer 7 on the left side of the indicator light area; on the right side of the display screen 8, there is a key area 9 connected by a circuit. There is a terminal outlet connected by a circuit below the key area 9, and a terminal inlet connected by a circuit above the key area 9. There is a wiring terminal 10 on the left side of the terminal outlet.

[0022] The indicator light area is sequentially connected with an operation light 1, a communication light 2, an overload indicator light 3, a short-circuit indicator light 4, an alarm light 5 and a silencing light 6 from top to bottom. The alarm light 5 is connected in series with a buzzer, and the buzzer amplifies the sound through the buzzer 7. That is to say, after the live wire terminal inlet 111, neutral wire terminal inlet 121, live wire terminal outlet 112 and neutral wire terminal outlet 122 of the electrical fire prevention current-limiting protector are correctly wired and powered on, the display screen 8 will display the normal operation interface. When the protector operates normally, the flashing frequency of the operation light 1 is 1 second; when there is communication data, the communication light 2 starts to flash. When an overload occurs in the circuit, the overload indicator light 3 will flash. When the overload indicator light 3 flashes continuously for 3 seconds, the protector will actively cut off the overload circuit to prevent a fire caused by overload; when the connected line is short-circuited, the short-circuit indicator light 4 is always on. When the protector receives an alarm message, the alarm light 5 is always on. The alarm light 5 is connected in series with a buzzer, and the sound emitted by the buzzer will be transmitted through the buzzer 7. At this time, the technician can operate the silencing key of the key area 9, the silencing light 6 is lit, and the buzzer turns off the sound; 1 and 2 of the wiring terminal 10 are temperature sensor interfaces, 3 and 4 are leakage sensor interfaces, and 5 and 6 are RS-485 communication interfaces. The zero-sequence current transformer and temperature probe connected to the terminal do not distinguish directions. When any fault occurs during the operation of the loaded operation, the corresponding sensor can be connected through the terminal 10 according to the alarm message of the protector to detect and analyze the fault and eliminate it.

[0023] A button area 9 is installed on the right side of the display screen 8 of the electrical fire-proof and current-limiting protector through the line, that is to say, when the fire-proof and current-limiting protector is in a no-load state, the parameters can be set through the five buttons in the button area 9 including the self-test button, reset button, mute button, setting button and confirmation button. The technicians can independently set the various parameters of the protector and reset, mute, protector fault information and self-test protector real-time information. When all parameters are set, you can press the confirmation button to save. You can exit immediately by pressing and holding the setting button for 5S, or you can wait for 20S for the display screen 8 to automatically return to the initial interface.

[0024] After the electrical fire-proof current-limiting protector of the present application is put into use, even if the protected current limiter is short-circuited or overloaded and is protected by the current limiter, the protector is still in a energized state. At this time, staff are not allowed to touch the power lines or metal parts at will. Relevant personnel should be notified in time to check the lines and troubleshoot. After the fault is eliminated, the circuit breaker at the next level must be turned off before power is turned on.

[0025] The electrical fire-proof current-limiting protector of the present application is installed on the wall or inside the distribution box through a guide rail, the width of the guide rail is 35 mm, the outer shell 11 is provided with heat dissipation holes, and the distance between the protector and other components is not less than 30 mm, so that the protector can fully dissipate heat; the terminal 10 is a high-voltage terminal, the live wire terminal outlet 112 and the neutral wire terminal outlet 122 are low-voltage signal terminals, and the zero-sequence transformer and temperature probe can be connected without distinguishing the direction.

[0026] In other specific applications of the electrical fire-proof current-limiting protector of the present application, the shape of the display screen and the shape of the protector housing can be rectangular or polygonal, or of course irregular, and the size specifications of both can be adjusted according to actual needs; the inlet and outlet wires of the protector should be selected according to the rated current of the protector (or the front circuit breaker) to select a suitable wire diameter, such as 20A 6mm 2 、40A 10mm 2 Or 63A 16mm 2 , can be adjusted according to actual needs, as long as it does not affect normal operation; the shielded wire used by the 485 communication terminal can be adjusted according to actual needs, which will not be described here one by one.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical fire prevention current-limiting protector, characterized in that: It includes a housing (11) and a display screen (8) embedded in the top of the housing. There is an indicator light area connected by a circuit on the left side of the display screen (8), and a buzzer (7) on the left side of the indicator light area; on the right side of the display screen (8), there is a button area (9) connected by a circuit. There is a terminal outlet connected by a circuit below the button area (9), and a terminal inlet connected by a circuit above the button area (9). There is a wiring terminal (10) on the left side of the terminal outlet.

2. The electrical fire prevention current-limiting protector according to claim 1, characterized in that: The protector is installed on the wall surface or inside the distribution box through a guide rail. The width of the guide rail is 35 mm. The housing (11) is provided with heat dissipation holes, and the distance between the protector and other components is not less than 30 mm.

3. The electrical fire prevention current-limiting protector according to claim 1, characterized in that: The indicator light area is sequentially connected with an operating light (1), a communication light (2), an overload indicator light (3), a short - circuit indicator light (4), an alarm light (5) and a silencing light (6) from top to bottom.

4. The electrical fire prevention current-limiting protector according to claim 1, characterized in that: The terminal outlet includes a live - wire terminal outlet (112) and a neutral - wire terminal outlet (122). The terminal inlet includes a live - wire terminal inlet (111) and a neutral - wire terminal inlet (121). The live - wire terminal outlet (112) and the neutral - wire terminal outlet (122) are weak - electric signal terminals.

5. The electrical fire prevention current-limiting protector according to claim 1, characterized in that: The wiring terminal (10) is a strong - electric wiring terminal.

6. The electrical fire prevention current-limiting protector according to claim 2, characterized in that: The operating environmental temperature range of the electrical fire - proof current - limiting protector is - 10°C to + 55°C, the rated current is 1 - 63 A, the operating voltage is 176 V - 264 V, and the rated frequency is 45 - 50 Hz.

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