CN220874222U

CN220874222U - Series surge protector

Info

Publication number: CN220874222U
Application number: CN202322467415.7U
Authority: CN
Inventors: 毛小毛
Original assignee: Prosurge Electronics Co Ltd
Current assignee: Prosurge Electronics Co Ltd
Priority date: 2023-09-11
Filing date: 2023-09-11
Publication date: 2024-04-30
Anticipated expiration: 2033-09-11

Abstract

The utility model belongs to the technical field of lightning protection, and provides a series-type surge protector which is applied to a single-phase circuit in order to solve the technical problem that the current load of the single-phase circuit cannot be met by the existing single-port parallel-type surge protector, and the series-type surge protector comprises: the device comprises a base and a pluggable module which is pluggable and installed to the base; the plug module comprises at least two serially connected serial metal oxide varistor elements, the base comprises a first port and a second port respectively, a first group of wiring terminals and a second group of wiring terminals are respectively arranged in the first port and the first port, and the first group of wiring terminals and the second group of wiring terminals are respectively connected with two ports in the two serial metal oxide varistor elements. Because the surge protector adopts a double-port serial connection type design, the residual voltage of the surge current can be effectively reduced, and the protection effect is improved.

Description

Series surge protector

Technical Field

The utility model relates to the technical field of lightning protection, in particular to a serial surge protector.

Background

A surge protector (Surge Protection Device, abbreviated as SPD in english) is an indispensable device in lightning protection of electronic equipment, and is often called a "lightning arrester" or an "overvoltage protector" in the past; the surge protector has the function that when the peak current or voltage is suddenly generated in an electric loop or a communication line due to external interference, the surge protector can conduct and shunt in a very short time, so that the damage of the surge to other equipment in the loop is avoided.

For example, chinese patent application CN201010019307.8 discloses a surge suppressor with thermal protection function, comprising a housing cover and a base with a mounting plate, on which a surge suppressing element and a thermal protection device are provided, the thermal protection device comprising a metal protrusion part electrically connected to the b electrode of the surge suppressing element, a compression spring, a slider with an arc extinguishing member movable on a guide rail groove of the mounting plate; during normal operation, the conductive metal component and the metal protruding part are electrically connected through a low-temperature welding spot, when the surge suppression element fails and a power frequency accident current flows through the surge suppression element, the low-temperature welding spot is melted, the conductive metal component breaks the connection with the metal protruding part, the spring pushes the arc extinguishing component on the sliding block to move, the broken gap is blocked, an air flow is generated, and an arc between the conductive metal component and the metal protruding part breaking gap is blown out, so that safer, timely and reliable circuit protection is provided.

For another example, chinese patent application No. CN201620143059.0 discloses a surge protector, which includes a PCB board base, a lightning protection module, the lightning protection module includes a housing, a temperature probe, and a pressure sensitive chip; the lightning protection module is inserted on the PCB base; the temperature probe is arranged in the shell of the lightning protection module and is close to the pressure sensitive chip.

For another example, chinese patent application No. cn201921419522.X discloses a plug module for a surge protector and a surge protector, the plug module comprising: a shell for accommodating the circuit element corresponding to the voltage sensitive element, wherein the side wall of the shell is provided with an anti-falling part which is matched with a limiting part in the base; if the plug module is mounted into the base of the surge protector, and when the force application member in the base applies a force to the plug module in a direction opposite to the mounting direction of the plug module; the limiting part is contacted with the anti-falling part, and the plug module is limited to pop up from the base through the limiting part. By adding a matching structure between the plug module and the base for the surge protector, the surge protector module is prevented from being popped up by mistake.

However, with the continuous expansion of the lightning protection market, the market demand for surge protectors is increasing, and the single-port parallel type surge protectors cannot completely meet the market demand.

Disclosure of utility model

In order to solve the technical problem that the current load of a single-phase circuit cannot be met by the existing single-port parallel surge protector, the utility model provides a serial surge protector which adopts a double-port serial design, so that the residual voltage of surge current can be effectively reduced, and the protection effect is improved.

The utility model provides a serial surge protector, which is characterized in that the serial surge protector is applied to a single-phase circuit and comprises:

the plug-in module is provided with a base provided with a wiring terminal and a plug-in module which can be installed on the base in a plug-in mode;

The plug module comprises at least two serially connected serial metal oxide varistor elements, and the serial metal oxide varistor elements adopt a connection relationship of a dual-port serial type;

The base comprises a first port and a second port, a first group of wiring terminals and a second group of wiring terminals are respectively arranged in the first port and the first port, and the first group of wiring terminals and the second group of wiring terminals are respectively connected with two ports in the two serial metal oxide varistor elements.

In a preferred embodiment of the present utility model, one end of the serial metal oxide varistor element is provided with one power input port, the other end is provided with one power output port, and the other input ports of the two serial metal oxide varistor elements are connected to each other through the first circuit board, respectively, and the other output ports of the two serial metal oxide varistor elements are also connected to each other through the second circuit board, respectively.

In a further preferred embodiment of the present utility model, the serial metal oxide varistor element is arranged up and down in the mounting direction of the plug module, and the first circuit board and the second circuit board are located on both sides of the serial metal oxide varistor element, respectively.

In a preferred embodiment of the present utility model, the serial surge protector further includes: and the remote signaling circuit is connected with the serial metal oxide varistor element, and at least one part of the remote signaling circuit is exposed out of the plug module shell.

In a preferred embodiment of the present utility model, the base further includes a first connection terminal and a second connection terminal connected to the first port and the second port, respectively, and the first connection terminal and the second connection terminal are connected to an input end and an output end of the single-phase circuit, respectively.

In the technical scheme provided by the utility model, the plug module comprises the series metal oxide varistor elements which are connected in parallel, so that when the base connected with the plug module is arranged in a single-phase circuit, the maximum load current of the series surge protector can be improved through the series metal oxide varistor elements, and the application range of the series surge protector provided by the utility model in a low-voltage power protection scene is improved.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure and/or process particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

Fig. 1 is a schematic structural diagram of a serial surge protector according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a plug module housing in a serial surge protector according to an embodiment of the present utility model.

Fig. 3 is a schematic structural diagram of a base upper cover in a serial surge protector according to an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a base lower cover in a serial surge protector according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram of a series protection circuit in a series surge protector according to an embodiment of the present utility model.

Fig. 6 is a schematic diagram of a local circuit in a serial surge protector according to an embodiment of the present utility model.

100-Plug modules, 110-plug module housings, 120-first circuit boards,

130-Second circuit board, 140-third circuit board, 150-first MOV,

160-Second MOV, 170-remote signaling terminal, 200-base,

210-A base upper cover, 220-a plug module jack, 230-a wiring jack,

240-A base lower cover, 221/222/223/224-a plug module wiring jack,

250-Connection terminals, 260-input/output copper bars,

221'/222'/223'/224' -Protection circuit input/output terminals.

Detailed Description

The following will describe embodiments of the present utility model in detail with reference to the drawings and examples, thereby solving the technical problems by applying technical means to the present utility model, and realizing the technical effects can be fully understood and implemented accordingly. It should be noted that these specific descriptions are only for easy and clear understanding of the present utility model by those skilled in the art, and are not meant to be limiting; and as long as no conflict is formed, each embodiment of the present utility model and each feature of each embodiment may be combined with each other, and the formed technical solutions are all within the protection scope of the present utility model.

The following describes the technical scheme of the utility model in detail through the attached drawings and specific embodiments:

Examples

As shown in fig. 1 to fig. 4, a schematic structural diagram of a serial surge protector, a schematic structural diagram of a plug module housing in the serial surge protector, a schematic structural diagram of a base upper cover in the serial surge protector, and a schematic structural diagram of a base lower cover in the serial surge protector are provided in this embodiment respectively.

As shown in fig. 1 to 4, the present embodiment provides a series surge protector applied to a single-phase circuit, the series surge protector including:

A base 200 provided with a connection terminal, and a plug module 100 pluggable-mounted to the base; the base 200 is provided with a connection terminal for connecting the series type surge protector in a single-phase circuit. Because the surge protector provided by the embodiment is provided with the pluggable module, the maintenance and the replacement are convenient. The single-phase protection ensures that the protector is more flexible, and is convenient for users to combine and adjust according to the requirements.

Fig. 6 is a schematic diagram of a local circuit in a serial surge protector according to the present embodiment, where:

The plug module 100 includes at least two serially connected serial metal oxide varistor elements (Metal Oxide Varistor, abbreviated as MOVs; first MOV150, second MOV 160) in a dual-port serial connection.

The base 200 includes a first port and a second port, respectively, in which a first set of terminals and a second set of terminals are disposed, respectively, and the first set of terminals and the second set of terminals are connected to two ports of the two serial metal oxide varistor elements, respectively. The housing 110 of the plug module 100 is provided with a protrusion matching with the recess in the base 200, and the protrusion can slide in the recess along the up-down direction (mounting direction) and when sliding to the bottom, the plug module 100 is mounted to the base 200.

Because the plug module comprises the series metal oxide varistor elements connected in parallel, when the base connected with the plug module is installed in a single-phase circuit, the maximum load current of the series surge protector can be improved through the series metal oxide varistor elements, and the application range of the series surge protector provided by the embodiment in a low-voltage power protection scene is improved. For example, the maximum load current is set to be 16A, and the method is suitable for most of low-voltage power protection scenes. The surge protector has larger through-current capacity, and can keep stable operation under high current impact, so that the equipment is protected from over-current damage; when the surge current exceeds the rated value of the protector, the protector has the function of quick heat release, so that the circuit is cut off quickly, and the safety of equipment is protected.

Preferably, the MOV module is PTMOV (Pressure-DEPENDENT TIME-DELAY METAL Oxide Varistor) element, so that by two PTMOV, more reliable protection and stability can be provided, enhancing the withstand voltage capability of the device.

In an alternative implementation manner, as shown in fig. 5 and fig. 6, this embodiment provides a serial protection circuit in a serial surge protector:

One end of the serial metal oxide varistor element 150, 160 is provided with one power input port 221', 222', the other end is provided with one power output port 223', 224', respectively, and the other input ports of the two serial metal oxide varistor element 150, 160 are connected to each other by the second circuit board 130, respectively, and the other output ports of the two serial metal oxide varistor element ends are also connected to each other by the third circuit board 140, respectively. The plug module further includes a first circuit board 120, and the first circuit board 120 is connected to the remote signaling terminal 170.

It should be noted that, the "first", "second" and "third" provided in this embodiment are merely for distinguishing different circuit boards, and in different scenarios, different serial numbers may be adopted; for example, the second circuit board 130 may also be referred to as a first circuit board, and the third circuit board 140 may also be referred to as a second circuit board; while the third circuit board 140 may be referred to as a first circuit board, these different descriptions are all within the scope of the present utility model.

In a further preferred embodiment of the present embodiment, the serial metal oxide varistor elements 150, 160 are arranged up and down in the mounting direction of the plug module, and the second circuit board 130 and the second circuit board 140 are located on both sides of the serial metal oxide varistor elements 150, 160, respectively.

In a preferred implementation manner of this embodiment, the serial surge protector further includes: and a remote signaling circuit connected to the serial metal oxide varistor element, at least a portion of the remote signaling circuit being exposed to the plug module housing. Because the surge protector is also provided with a remote signaling function, the state of the protector can be monitored in real time, and a user can conveniently find faults and maintain in time.

In a preferred implementation manner of this embodiment, the base 200 further includes a first connection terminal and a second connection terminal respectively connected to the first port and the second port in the jack 220 of the plug module, where the first connection terminal and the second connection terminal are disposed in the connection jack 230 and are respectively connected to an input end and an output end of the single-phase circuit.

Finally, it should be noted that the above description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way. Any person skilled in the art can make many possible variations and simple substitutions to the technical solution of the present utility model by using the methods and technical matters disclosed above without departing from the scope of the technical solution of the present utility model, and these all fall into the scope of protection of the technical solution of the present utility model.

Claims

1. A series surge protector for use in a single-phase circuit, the series surge protector comprising:

The base comprises a first port and a second port, a first group of wiring terminals and a second group of wiring terminals are respectively arranged in the first port and the first port, and the first group of wiring terminals and the second group of wiring terminals are respectively connected with two ports in the serial metal oxide varistor element.

2. A serial surge protector according to claim 1, characterized in that the serial metal oxide varistor element is provided with one power input port at one end and one power output port at the other end, respectively, and that the other of the two serial metal oxide varistor elements is connected to each other at one end by means of a first circuit board, respectively, and that the other of the two serial metal oxide varistor elements is also connected to each other at one end by means of a second circuit board, respectively.

3. The tandem surge protector of claim 2, wherein the tandem metal oxide varistor element is arranged up and down in the direction of installation of the plug module, and the first circuit board and the second circuit board are located on both sides of the tandem metal oxide varistor element, respectively.

4. The in-line surge protector of claim 1, further comprising: and the remote signaling circuit is connected with the serial metal oxide varistor element, and at least one part of the remote signaling circuit is exposed out of the plug module shell.

5. The in-line surge protector of claim 1, wherein the base further comprises a first terminal and a second terminal connected to the first port and the second port, respectively, the first terminal and the second terminal being connected to an input and an output of a single-phase circuit, respectively.