Cabinet power protector and installation method

Abstract

The present invention discloses a cabinet power supply protector, comprising a No. 1 shell and a No. 2 shell, wherein the No. 1 shell and the No. 2 shell are assembled into a protective shell of the power supply protector, and the No. 2 shell is provided with guide rail side panels on both sides opposite to the No. 1 shell, and two guide rail side panels are provided, and locking mechanisms are provided on both guide rail side panels, and guide rail mounting bayonet is provided in the middle of the two guide rail side panels, and the two guide rail side panels are connected to the mounting guide rail through the guide rail mounting bayonet, and a No. 1 guide rail part is provided on the guide rail mounting bayonet, and a No. 2 guide rail part corresponding to the No. 1 guide rail part is provided on one side of the mounting guide rail, and the No. 1 guide rail part and the No. 2 guide rail part are plug-in and slidably connected. By providing a series of structures, the present invention provides a power supply protector with multiple installation methods, is easy to install, and has less installation loss and a longer service life than traditional hole bolt installation. The power supply protector is easy to assemble and disassemble, firmly installed, and more practical.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply protector installation, in particular to a power supply protector for a cabinet and an installation method thereof. Background Art

[0002] The power protector (PSD) monitors and protects the cabinet during operation. It is a multifunctional monitoring and protection device for three-phase power systems or three-phase electrical equipment. It integrates three-phase voltage display, overvoltage protection, undervoltage protection, phase loss protection (failure protection), and phase sequence protection (phase mismatch protection). It features a Chinese LCD display and offers comprehensive functionality, stable performance, and easy operation.

[0003] Currently, power protectors are directly installed using perforated bolts. This installation method not only damages the structure of the power protector, especially the frequent disassembly and assembly of the power protector, resulting in loose installation and affecting its service life, but also increases the difficulty of installing the power protector. For example, when installing the power protector between the power protector and the contactor, the mounting screw holes on the power protector need to correspond to the contactor installation, otherwise the two are difficult to assemble, and the installation is time-consuming and labor-intensive. Summary of the Invention

[0004] The object of the present invention is to provide a cabinet power protector and an installation method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a cabinet power protector, comprising a No. 1 shell and a No. 2 shell, wherein the No. 1 shell and the No. 2 shell are assembled into a protective shell of the power protector, and the No. 2 shell is provided with guide rail side panels on both sides of the No. 1 shell away from the side opposite to the No. 1 shell, and the guide rail side panels are provided with two, and the two guide rail side panels are provided with a locking mechanism, and the middle part of the two guide rail side panels is provided with a guide rail mounting bayonet, and the two guide rail side panels are connected to the mounting guide rail through the guide rail mounting bayonet, and the guide rail mounting bayonet is provided with a No. 1 Guide rail parts, one side of the mounting guide rail is provided with a No. 2 guide rail part corresponding to the No. 1 guide rail part, the No. 1 guide rail part and the No. 2 guide rail part are plugged and slidably connected, and the opposite ends of the mounting guide rail are provided with fixing holes, and the mounting guide rail is fixed by fixing bolts in the fixing holes, and the upper end of the No. 2 shell away from the No. 1 shell is provided with a contactor top pile bayonet, and the contactor top pile bayonet is installed with the contactor docking top pile on the contactor, and a 3P power strip is provided on the top of the protective shell, and a 4P power strip and a switch output power strip are provided at the bottom of the protective shell.

[0006] Preferably, the contactor top pile bayonet is composed of a bayonet side plate, a bayonet seat, a bayonet plate and a bayonet block, and the contactor docking top pile is composed of a top pile seat, a docking seat, a bayonet plate and a bayonet hole, two bayonet side plates are provided at the upper end of the No. 2 shell between the two guide rail side plates, a bayonet seat is provided on the No. 2 shell between the two bayonet side plates, a bayonet seat is provided on the top of one side of the bayonet seat, a bayonet plate is provided on one side of the bayonet plate, a bayonet block is provided on the contactor, a top pile seat is provided on the top of the top pile seat, a docking seat is provided on one side of the docking seat, a bayonet plate is provided, a bayonet hole corresponding to the bayonet block is provided on the bayonet plate, the bayonet seat is provided in the docking seat, and the bayonet block is provided inside the bayonet hole.

[0007] Preferably, a spring is provided between one side of the snap plate and the outer side of the second housing.

[0008] Preferably, the No. 1 guide rail component consists of a No. 1 guide rail groove and a No. 1 guide rail bar, and the No. 2 guide rail component consists of a No. 2 guide rail groove and a No. 2 guide rail bar. The No. 1 guide rail bar is arranged in the No. 2 guide rail groove and slides, and the No. 2 guide rail bar is arranged in the No. 1 guide rail groove and slides.

[0009] Preferably, a sealing groove and a sealing ring are provided between the adjacent sides of the No. 1 shell and the No. 2 shell, and the No. 1 shell and the No. 2 shell are fixedly assembled by assembling bolts.

[0010] Preferably, a first heat dissipation port is provided on one side of the first shell, a second heat dissipation port is provided on the other side of the first shell, and dustproof nets are provided inside the first heat dissipation port and the second heat dissipation port.

[0011] Preferably, a limiting top plate is provided on the side where the tops of the two guide rail side plates are close to each other, and an L-shaped structure is arranged between the guide rail side plates and the limiting top plate.

[0012] Preferably, the locking mechanism includes a locking rod, a locking cam and a handwheel. A locking rod is provided on each of the two guide rail side plates on one side of the guide rail mounting bayonet. One end of the locking rod passes through the guide rail side plate and is connected to the locking cam, and the other end of the locking rod is connected to the handwheel.

[0013] A method for installing a cabinet power protector, wherein the power protector is installed by one of rail installation and contactor installation;

[0014] When installing the guide rail, first, the fixing bolts are engaged with the fixing holes to fix the installation guide rail to the position where the power protector is to be installed. Then, the guide rail installation bayonet on the guide rail side panel is inserted from one end of the installation guide rail, so that the guide rail installation bayonet is slidably engaged on the installation guide rail, and the No. 1 guide rail part on the guide rail installation bayonet is slidably engaged with the No. 2 guide rail part on the installation guide rail in a one-to-one corresponding manner. After the power protector is slid onto the installation guide rail to the installation point, the hand wheel is turned to drive the locking rod and the locking cam on the guide rail side panel to rotate through the hand wheel, so that one end of the locking cam is pressed between the installation guide rail and the No. 2 shell to lock it, thereby the power protector is clamped and installed through the cooperation between the guide rail installation bayonet and the installation guide rail.

[0015] When the contactor is installed, the two bayonet side plates on one side of the No. 2 shell are inserted into the outside of the top pile seat on the contactor, and the bayonet seat is inserted into the docking seat. When the bayonet block on the bayonet plate coincides with the bayonet hole on the connecting plate, the bayonet block is inserted into the bayonet hole under the action of the spring, thereby connecting the contactor top pile bayonet with the contactor docking top pile, and the power protector and the contactor top pile are installed.

[0016] Preferably, when the power protector is installed, the outer side of the No. 1 heat dissipation port on the power protector is spaced more than 15 mm from other external devices.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The power supply protector of this cabinet and its installation method realize the guide rail installation of the power supply protector by means of the guide rail side panel provided on the No. 2 outer shell and the guide rail installation bayonet provided on the guide rail side panel cooperates with the installation guide rail, and the contactor top pile bayonet provided on the No. 2 outer shell cooperates with the contactor docking top pile on the contactor to realize the contactor installation of the power supply protector. Thus, the power supply protector provides multiple installation methods and is easy to install. Compared with the traditional open-hole bolt installation, it has less installation loss and longer service life.

[0019] 2. The power supply protector of this cabinet and its installation method are characterized by the No. 1 guide rail piece set on the guide rail installation bayonet and the No. 2 guide rail piece on the installation guide rail, combined with the locking rod and locking cam on the guide rail side panel, the guide rail installation structure is compact, and the snap holes on the docking plate cooperate with the snap blocks on the snap plate, and the contactor top pile bayonet is engaged with the contactor docking top pile, so that the power supply protector is easy to disassemble and assemble, firmly installed, and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic structural diagram of the No. 1 housing in the present invention;

[0022] Figure 3 This is a schematic structural diagram of the No. 2 housing in the present invention;

[0023] Figure 4 This is a schematic structural diagram of the contactor top pile clamp in the present invention;

[0024] Figure 5 It is a structural schematic diagram of the guide rail side plate in the present invention.

[0025] In the figure: 1. Housing No. 1; 2. Housing No. 2; 3. Guide rail side panel; 31. Locking rod; 32. Locking cam; 33. Handwheel; 4. Contactor top pile bayonet; 41. Bayonet side panel; 42. Snap seat; 43. Snap plate; 44. Snap block; 45. Spring; 5. Guide rail mounting bayonet; 6. Guide rail installation; 7. Contactor docking top pile; 71. Top pile seat; 72. Docking seat; 73. Snap plate; 74. Snap hole; 8. Guide rail part No. 1; 9. Guide rail part No. 2; 10. Fixing hole; 11. Fixing bolt; 12. Assembly bolt; 13. 3P socket strip; 14. 4P socket strip; 15. Switch output socket strip; 16. Heat dissipation vent No. 1; 17. Heat dissipation vent No. 2. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0029] Example

[0030] like Figures 1 to 5 As shown, the cabinet power protector and installation method of this embodiment include a No. 1 shell 1 and a No. 2 shell 2. The No. 1 shell 1 and the No. 2 shell 2 are assembled into a protective shell of the power protector. The No. 2 shell 2 is integrally provided with guide rail side panels 3 on both sides opposite to the side away from the No. 1 shell 1. There are two guide rail side panels 3. Both guide rail side panels 3 are provided with a locking mechanism. The middle part of the two guide rail side panels 3 is provided with a guide rail mounting bayonet 5. The two guide rail side panels 3 are connected to the mounting guide rail 6 through the guide rail mounting bayonet 5. The guide rail mounting bayonet 5 is provided with a No. 1 guide rail member 8. One side of the mounting guide rail 6 is provided with a No. 2 guide rail member 9 corresponding to the No. 1 guide rail member 8. The No. 1 guide rail part 8 and the No. 2 guide rail part 9 are plug-in and slidingly connected, and fixing holes 10 are provided at the opposite ends of the mounting guide rail 6. The mounting guide rail 6 is fixed by fixing bolts 11 in the fixing holes 10. The upper end of the No. 2 shell 2 away from the No. 1 shell 1 is provided with a contactor top pile bayonet 4, and the contactor top pile bayonet 4 is installed with the contactor docking top pile 7 on the contactor. A 3P power strip 13 is provided on the top of the protective shell, and a 4P power strip 14 and a switch output power strip 15 are provided on the bottom of the protective shell. The power protector provides a variety of installation methods, is easy to install, and has less installation loss and a long service life compared to traditional open-hole bolt installation.

[0031] Specifically, the contactor top pile bayonet 4 is composed of a bayonet side plate 41, a bayonet seat 42, a bayonet plate 43 and a bayonet block 44. The contactor docking top pile 7 is composed of a top pile seat 71, a docking seat 72, a bayonet plate 73 and a bayonet hole 74. Two bayonet side plates 41 are provided at the upper end of the No. 2 housing 2 between the two guide rail side plates 3. A bayonet seat 42 is provided on the No. 2 housing 2 between the two bayonet side plates 41. A bayonet seat 42 is provided on the top of one side of the bayonet seat 42. A bayonet plate 43 is provided on one side of the bayonet plate 43. A bayonet block 44 is provided on the one side of the bayonet plate 43. A top pile seat 71 is provided on the contactor. A docking seat 72 is provided on the top of the top pile seat 71. A bayonet plate 73 is provided on one side of the docking seat 72. A bayonet hole 74 corresponding to the bayonet block 44 is provided on the bayonet plate 73. The bayonet seat 42 is provided in the docking seat 72, and the bayonet block 44 is provided in the bayonet hole 74 for installation between the power protector and the contactor.

[0032] Furthermore, a spring 45 is provided between one side of the snap plate 43 and the outer side of the second housing 2, which improves compactness.

[0033] Furthermore, the No. 1 guide rail member 8 is composed of a No. 1 guide rail groove and a No. 1 guide rail bar, and the No. 2 guide rail member 9 is composed of a No. 2 guide rail groove and a No. 2 guide rail bar. The No. 1 guide rail bar is arranged to slide in the No. 2 guide rail groove, and the No. 2 guide rail bar is arranged to slide in the No. 1 guide rail groove.

[0034] Furthermore, a sealing groove and a sealing ring are provided between the adjacent sides of the No. 1 shell 1 and the No. 2 shell 2. The No. 1 shell 1 and the No. 2 shell 2 are fixedly assembled by assembling bolts 12. The No. 1 shell 1 and the No. 2 shell 2 are easy to assemble, firm and have good sealing performance.

[0035] Furthermore, a first heat dissipation port 16 is provided on one side of the first shell 1 , and a second heat dissipation port 17 is provided on the other side of the first shell 1 . Dustproof nets are provided inside the first heat dissipation port 16 and the second heat dissipation port 17 .

[0036] Furthermore, a limiting top plate is provided on the side close to the top of the two guide rail side plates 3 , and an L-shaped structure is set between the guide rail side plates 3 and the limiting top plate, which can limit the installation between the two guide rail side plates 3 .

[0037] Furthermore, the locking mechanism includes a locking rod 31, a locking cam 32 and a handwheel 33. A locking rod 31 is provided on each of the two guide rail side plates 3 on one side of the guide rail mounting bayonet 5. One end of the locking rod 31 passes through the guide rail side plate 3 and is connected to the locking cam 32, and the other end of the locking rod 31 is connected to the handwheel 33, thereby increasing the tightness of the guide rail installation.

[0038] A method for installing a cabinet power protector, wherein the power protector is installed by one of guide rail installation and contactor installation;

[0039] When installing the guide rail, first, the fixing bolts 11 are matched with the fixing holes 10 to fix the installation guide rail 6 to the position where the power protector is to be installed. Then, the guide rail installation bayonet 5 on the guide rail side plate 3 is inserted from one end of the installation guide rail 6, so that the guide rail installation bayonet 5 is slidably engaged on the installation guide rail 6, and the No. 1 guide rail part 8 on the guide rail installation bayonet 5 is slidably engaged with the No. 2 guide rail part 9 on the installation guide rail 6 in a one-to-one corresponding manner. After the power protector is slid onto the installation guide rail 6 to the installation point, the hand wheel 33 is turned to drive the locking rod 31 and the locking cam 32 on the guide rail side plate 3 to rotate, so that one end of the locking cam 32 is pressed between the installation guide rail 6 and the No. 2 housing 2 to lock it. Therefore, the power protector is clamped and installed through the cooperation of the guide rail installation bayonet 5 and the installation guide rail 6, and the guide rail installation is compact and firm.

[0040] When installing the contactor, the two bayonet side plates 41 on one side of the No. 2 shell 2 are inserted into the outside of the top pile seat 71 on the contactor, and the bayonet seat 42 is inserted into the docking seat 72. When the bayonet block 44 on the bayonet plate 43 coincides with the bayonet hole 74 on the connecting plate 73, under the action of the spring 45, the bayonet block 44 is inserted into the bayonet hole 74, thereby connecting the contactor top pile bayonet 4 with the contactor docking top pile 7 to install the power protector and the contactor top pile. The connection between the contactor top pile bayonet 4 and the contactor docking top pile 7 is convenient and firm to disassemble and assemble.

[0041] Specifically, when the power protector is installed, the outer side of the first heat dissipation vent 16 on the power protector is spaced more than 15 mm from other external devices to prevent other external devices from blocking the first heat dissipation vent 16 .

[0042] The method of using this embodiment is as follows: when installing the power protector on the guide rail, first, the fixing bolt 11 is matched with the fixing hole 10 to fix the installation guide rail 6 to the position where the power protector is to be installed, and then the guide rail installation bayonet 5 on the guide rail side plate 3 is inserted from one end of the installation guide rail 6, so that the guide rail installation bayonet 5 is slidably engaged on the installation guide rail 6, and the No. 1 guide rail member 8 on the guide rail installation bayonet 5 is slidably engaged with the No. 2 guide rail member 9 on the installation guide rail 6 in a one-to-one corresponding manner. After the power protector is slid on the installation guide rail 6 to the installation point, the hand wheel 33 is turned to rotate the hand wheel 33. 3 drives the locking rod 31 and the locking cam 32 on the guide rail side plate 3 to rotate, so that one end of the locking cam 32 is pressed between the mounting guide rail 6 and the second housing 2 to lock, thereby the power protector is clamped and installed through the cooperation of the guide rail mounting bayonet 5 and the mounting guide rail 6. Similarly, the locking rod 31 and the locking cam 32 are rotated by the hand wheel 33, so that the locking cam 32 is no longer squeezed between the second housing 2 and the mounting guide rail 6, so that the power protector can slide on the mounting guide rail 6 again; when the power protector is installed as a contactor, the two ends on one side of the second housing 2 When the locking nut 74 is in the unlock state, the locking nut 74 is in the unlock state, and the locking nut 74 is in the unlock state, so that the locking nut 74 is locked and the locking nut 74 is locked. The bayonet 4 is pulled out from the contactor docking top pile 7, providing the power protector with multiple installation methods such as guide rail installation and contactor installation. The installation is convenient, and compared with the traditional open-hole bolt installation, the installation loss is smaller and the service life is long. The No. 1 guide rail part 8 on the guide rail installation bayonet 5 and the No. 2 guide rail part 9 on the installation guide rail 6, the No. 1 guide rail bar is set in the No. 2 guide rail groove and slides, and the No. 2 guide rail bar is set in the No. 1 guide rail groove and slides. The guide rail installation structure is compact, and the contactor top pile bayonet 4 is clamped with the contactor docking top pile 7, so that the power protector is easy to disassemble and assemble, firmly installed, and more practical.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are 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 will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalent features for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cabinet power protector, comprising a first housing (1) and a second housing (2), characterized in that: The No. 1 shell (1) and the No. 2 shell (2) are assembled into a protective shell of a power supply protector. The No. 2 shell (2) is provided with guide rail side panels (3) on both sides of the side away from the No. 1 shell (1). There are two guide rail side panels (3). The two guide rail side panels (3) are provided with a locking mechanism. The middle parts of the two guide rail side panels (3) are provided with a guide rail mounting bayonet (5). The two guide rail side panels (3) are connected to the mounting guide rail (6) through the guide rail mounting bayonet (5). The guide rail mounting bayonet (5) is provided with a No. 1 guide rail member (8). One side of the mounting guide rail (6) is provided with a corresponding No. 1 guide rail member (8). The second guide rail member (9) is plug-in and slidably connected with the first guide rail member (8) and the second guide rail member (9), and the opposite ends of the mounting guide rail (6) are provided with fixing holes (10), and the mounting guide rail (6) is fixed by fixing bolts (11) in the fixing holes (10). The upper end of the second housing (2) away from the first housing (1) is provided with a contactor top pile bayonet (4), and the contactor top pile bayonet (4) is installed with the contactor docking top pile (7) on the contactor, and the top of the protective housing is provided with a 3P power strip (13), and the bottom of the protective housing is provided with a 4P power strip (14) and a switch output power strip (15); The contactor top pile bayonet (4) is composed of a bayonet side plate (41), a bayonet seat (42), a bayonet plate (43) and a bayonet block (44); the contactor docking top pile (7) is composed of a top pile seat (71), a docking seat (72), a bayonet plate (73) and a bayonet hole (74); two bayonet side plates (41) are provided on the upper end of the second housing (2) between the two guide rail side plates (3); a bayonet seat (42) is provided on the second housing (2) between the two bayonet side plates (41); and a bayonet hole (74) is provided on the second housing (2). A snap plate (43) is provided on the top of one side of the seat (42), a snap block (44) is provided on one side of the snap plate (43), a top pile seat (71) is provided on the contactor, a docking seat (72) is provided on the top of the top pile seat (71), a snap plate (73) is provided on one side of the docking seat (72), a snap hole (74) corresponding to the snap block (44) is provided on the snap plate (73), the snap seat (42) is provided in the docking seat (72), and the snap block (44) is provided inside the snap hole (74); The locking mechanism comprises a locking rod (31), a locking cam (32) and a hand wheel (33). The two guide rail side plates (3) on one side of the guide rail mounting bayonet (5) are each provided with a locking rod (31). One end of the locking rod (31) passes through the guide rail side plate (3) and is connected to the locking cam (32). The other end of the locking rod (31) is connected to the hand wheel (33).

2. The cabinet power protector according to claim 1, characterized in that: A spring (45) is provided between one side of the snap plate (43) and the outer side of the second housing (2).

3. The cabinet power protector according to claim 1, characterized in that: The No. 1 guide rail member (8) is composed of a No. 1 guide rail groove and a No. 1 guide rail bar, and the No. 2 guide rail member (9) is composed of a No. 2 guide rail groove and a No. 2 guide rail bar. The No. 1 guide rail bar is arranged in the No. 2 guide rail groove and slides, and the No. 2 guide rail bar is arranged in the No. 1 guide rail groove and slides.

4. The cabinet power protector according to claim 1, characterized in that: A sealing pressing groove and a sealing pressing ring are provided between the adjacent sides of the No. 1 shell (1) and the No. 2 shell (2), and the No. 1 shell (1) and the No. 2 shell (2) are fixedly assembled by assembly bolts (12).

5. The cabinet power protector according to claim 1, characterized in that: A first heat dissipation port (16) is provided on one side of the first shell (1), and a second heat dissipation port (17) is provided on the other side of the first shell (1). Dustproof nets are provided inside the first heat dissipation port (16) and the second heat dissipation port (17).

6. The cabinet power protector according to claim 1, characterized in that: A limiting top plate is provided on the side where the tops of the two guide rail side plates (3) are close to each other, and an L-shaped structure is provided between the guide rail side plates (3) and the limiting top plate.

7. A method for installing a cabinet power protector according to claim 1, characterized in that: The power protector is installed by one of guide rail installation and contactor installation; When the guide rail is installed, first, the fixing bolt (11) is matched with the fixing hole (10) to fix the installation guide rail (6) to the position where the power protector is to be installed, and then the guide rail installation bayonet (5) on the guide rail side plate (3) is inserted from one end of the installation guide rail (6), so that the guide rail installation bayonet (5) slides and is clamped on the installation guide rail (6), and the No. 1 guide rail piece (8) on the guide rail installation bayonet (5) and the No. 2 guide rail piece (9) on the installation guide rail (6) are aligned. A corresponding sliding connection is made. After the power protector is slid onto the mounting rail (6) to the mounting point, the hand wheel (33) is rotated to drive the locking rod (31) and the locking cam (32) on the rail side plate (3) to rotate, so that one end of the locking cam (32) is pressed between the mounting rail (6) and the second housing (2) to lock. Thus, the power protector is mounted by the cooperation between the rail mounting bayonet (5) and the mounting rail (6); When the contactor is installed, the two bayonet side plates (41) on one side of the second housing (2) are inserted into the outside of the top pile seat (71) on the contactor, and the buckle seat (42) is inserted into the docking seat (72). When the buckle block (44) on the buckle plate (43) coincides with the buckle hole (74) on the connecting plate (73), the buckle block (44) is inserted into the buckle hole (74) under the action of the spring (45), thereby connecting the contactor top pile bayonet (4) with the contactor docking top pile (7), and installing the power protector and the contactor top pile.

8. The method for installing a cabinet power protector according to claim 7, characterized in that: When the power protector is installed, the outer side of the first heat dissipation opening (16) on the power protector is spaced more than 15 mm from other external devices.

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