CN215911902U - Lightning protection device, distribution equipment and distribution system - Google Patents

Abstract

The application provides a lightning protection device, distribution equipment and a distribution system, and relates to the field of power supply equipment. The lightning protection device includes the shell and sets up the lightning protection circuit in the shell, and the lightning protection circuit includes lightning protection device, trip gear, auxiliary contact and following at least one resistance: the shell comprises a first slot, a second slot and a first signal slot. The first port of the lightning protection circuit is connected with the second port of the lightning protection circuit through the lightning protection device and the tripping device, and the first port is directly connected with the first signal port of the lightning protection circuit or connected through a first resistor; the first signal port is connected with the second port through an auxiliary contact or connected with the second resistor through the auxiliary contact; the first port is connected with the first slot, the second port is connected with the second slot, and the first signal port is connected with the first signal slot; the tripping device is disconnected when the lightning protection device fails and controls the auxiliary contact to be disconnected. The scheme improves the monitoring convenience of the lightning protection device and saves the cost.

Description

Lightning protection device, distribution equipment and distribution system

Technical Field

The application relates to the technical field of power supply equipment, in particular to a lightning protection device, power distribution equipment and a power distribution system.

Background

Lightning Protection devices (SPDs), sometimes also called power supply lightning protectors, arresters or Surge protectors, are used to protect electrical circuits from surges caused by lightning strikes or other transient overvoltages.

The lightning protection device is a vulnerable device, namely, the lightning protection device is likely to fail due to a large number of lightning strokes or large energy, so that the lightning protection device needs to be replaced in time. At present, most lightning protection devices used in base stations and machine room equipment adopt guide rail installation type lightning protection devices, each guide rail type lightning protection device comprises a lightning protection module and a guide rail type base, and the lightning protection modules are inserted in the guide rail type bases. In order to determine whether a rail-mounted lightning protector has failed, a separate lead from the lightning protector is connected to a monitor, and maintenance personnel regularly observe the detector to determine whether the rail-mounted lightning protector has failed.

However, in this method, the lightning protection device mounted on each guide rail and the corresponding monitor need to be wired and connected, which increases material cost and installation time, and is not convenient for maintenance and monitoring.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the application provides a lightning protection device, distribution equipment and distribution system, has promoted the convenience of lightning protection device installation, maintenance and control to material cost has been saved.

In a first aspect, the application provides a lightning protection device for protecting a load device, the lightning protection device is connected with a power supply busbar, the power supply busbar comprises a positive busbar and a negative busbar, and the power supply busbar can be a direct current busbar or an alternating current busbar. The lightning protection device comprises a shell and a lightning protection circuit arranged in the shell; the lightning protection circuit comprises a lightning protection device, a tripping device, an auxiliary contact and at least one of the following resistors: a first resistance or a second resistance. The shell comprises a first slot, a second slot and a first signal slot. The first port of the lightning protection circuit is connected with the second port of the lightning protection circuit through the lightning protection device and the tripping device, and the first port is directly connected with the first signal port of the lightning protection circuit or connected with the first signal port of the lightning protection circuit through a first resistor. The first signal port and the second port are connected through an auxiliary contact or connected with the second resistor through the auxiliary contact. The first port is connected with the first slot, the second port is connected with the second slot, the first signal port is connected with the first signal slot, the first slot and the second slot are used for connecting a power supply bus bar, and the first signal slot is used for connecting a first signal bus bar. The tripping device is used for disconnecting when the lightning protection device has a fault and controlling the auxiliary contact to be disconnected.

The lightning protection device is not required to be connected to a power supply through a lead, but is connected to a power supply busbar through a slot, and therefore the installation difficulty and the material cost are reduced. The first signal port of the lightning protection device is plugged with the first signal bus bar through the first signal slot, so that the fault detection of the lightning protection device can be realized through the voltage change of the first signal port, the connection to a monitor is not needed, and the installation is convenient. In addition, a plurality of lightning protection devices can be plugged into the same first signal busbar, so that monitors do not need to be separately arranged, and centralized management and maintenance are facilitated. In conclusion, the lightning protection device can save material cost and improve the convenience of installation, maintenance and monitoring.

With reference to the first aspect, in one possible implementation manner, the housing includes a first wiring port and a second wiring port. The first wiring port is connected with the first end of the lightning protection device, and the second wiring port is connected with the second end of the lightning protection device. The first and second connection ports are used for connecting load devices. At this time, the lightning protection device can also be used as a connector to connect with external load equipment.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit further includes a disconnecting device, and the disconnecting device is disposed in a trunk of the lightning protection circuit. The disconnecting device is connected between the first wiring port and the first end of the lightning protection device in series, or the disconnecting device is connected between the second wiring port and the second end of the lightning protection device in series. The disconnecting device is used for disconnecting when the lightning protection device fails and controlling the auxiliary contact to be disconnected. At the moment, the lightning protection device has the function of a circuit breaker, and can disconnect the connected load equipment in time when the lightning protection device has a fault.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit further includes a fuse device, a first end of the fuse device is connected to the second connection port, and a second end of the fuse device is connected to the second port. The fusing device is used for fusing when the lightning protection device fails and controlling the auxiliary contact to be disconnected. At the moment, the lightning protection device has the function of a fuse, and can be fused when the circuit is in overcurrent due to the fault of the lightning protection device, so that the circuit and the load equipment are protected.

With reference to the first aspect, in one possible implementation manner, the fuse device is a fuse and a fuse triggering indicator connected in parallel, or the fuse device is a fuse.

With reference to the first aspect, in one possible implementation manner, the lightning protection circuit further includes a third resistor and a first diode. The first signal port is connected with the cathode of the first diode, the second end of the third resistor is connected with the anode of the first diode, and the first end of the third resistor is connected with the first port or connected with the first port through the first resistor. The third resistor is used for limiting current to protect the circuit.

With reference to the first aspect, in one possible implementation manner, the lightning protector further includes a second diode, a third diode, and a fourth resistor. The second diode is a light emitting diode; and the second diode and the fourth resistor are connected in series and then connected in parallel at two ends of the lightning protection device, wherein the anode of the second diode is connected with the first port. The anode of the third diode is connected with the cathode of the second diode, and the cathode of the third diode is connected with the anode of the second diode. The second diode is used for indicating whether the lightning protection device is in fault, and the third diode is a reverse surge protection diode and prevents reverse surge/lightning from puncturing the second diode. The fourth resistor is used for limiting current.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit includes a first resistor and a second resistor, and the lightning protector further includes a second diode and a third diode. The second diode is a light emitting diode; the second diode is connected between the first resistor and the second resistor in series, and the anode of the second diode is connected with the second end of the first resistor. The anode of the third diode is connected with the cathode of the second diode, and the cathode of the third diode is connected with the anode of the second diode. The second diode is used for indicating whether the lightning protection device is in fault, and the third diode is a reverse surge protection diode and prevents reverse surge/lightning from puncturing the second diode.

With reference to the first aspect, in a possible implementation manner, the lightning protection device further includes a second diode, a third diode, and a fourth resistor; the second diode is a light emitting diode. And the second diode and the fourth resistor are connected in series and then connected in parallel at two ends of the tripping device, wherein the anode of the second diode is connected between the lightning protection device and the tripping device. The anode of the third diode is connected with the cathode of the second diode, and the cathode of the third diode is connected with the anode of the second diode. The second diode is used for indicating whether the lightning protection device is in fault, and the third diode is a reverse surge protection diode and prevents reverse surge/lightning from puncturing the second diode. The fourth resistor is used for limiting current.

With reference to the first aspect, in one possible implementation manner, the housing includes an indication window, a position of the indication window corresponds to the second diode, and the indication window is used for observing the second diode outside the lightning protector.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit includes a first resistor, the lightning protection circuit further includes a first plug terminal, and the housing further includes a second signal slot and a third signal slot. The second end of the first resistor is connected with the first end of the auxiliary contact through a first plug terminal; the first plug terminal is used for enabling the branch where the first resistor is located to be in an open circuit when being pulled out; the second end of the auxiliary contact comprises a first contact and a second contact, wherein the first contact is a normally closed contact, and the second contact is a normally open contact; the first contact is used for connecting a second signal bus through a second signal slot; the second contact is used for connecting a third signal bus bar through a third signal slot. The scheme realizes the switching of the analog quantity alarm mode and the dry contact point alarm mode.

With reference to the first aspect, in a possible implementation manner, the housing further includes a first plug structure, and the first plug structure includes a first female end and a first male end. The first male end comprises a first plug terminal; when the first male end is pulled out from the first female end, the first plug terminal is pulled out.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit further includes a second resistor, and the lightning protection circuit further includes a second plug terminal; the second plug terminal is connected between the first contact and the second resistor; the second plug terminal is used for enabling the branch circuit where the second resistor is located to be broken when the second plug terminal is pulled out.

With reference to the first aspect, in a possible implementation manner, the housing further includes a second plug structure, and the second plug structure includes a second female end and a second male end. The second male end includes a second mating terminal. When the second male end is pulled out from the second female end, the second plug terminal is pulled out.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit includes a second resistor, a second plug terminal, and a second signal slot and a third signal slot. The first end of auxiliary contact is connected the first end of third resistance, and the second end of auxiliary contact includes first contact and second contact, and wherein, first contact is normally closed contact, and the second contact is normally open contact. The second plug terminal is connected between the first contact and the second resistor; the second plug terminal is used for enabling the branch circuit where the second resistor is located to be broken when the second plug terminal is pulled out. The first contact is used for connecting a second signal bus bar through a second signal slot. The second contact is connected with a third signal bus bar through a third signal slot.

With reference to the first aspect, in a possible implementation manner, the housing further includes a second plug structure, and the second plug structure includes a second female end and a second male end. The second male end comprises a second plug terminal; when the second male end is pulled out from the second female end, the second plug terminal is pulled out.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit includes a first resistor and a second resistor, and the lightning protection circuit further includes a second lightning protection device, a second trip device, a second auxiliary contact, a fifth resistor, and a sixth resistor. The protection ground of the lightning protection circuit is connected with the first port through a second lightning protection device and a second tripping device, the protection ground is also connected with a first end of a fifth resistor, and a second end of the fifth resistor is connected with the first port through a second auxiliary contact and a sixth resistor; the second end of the fifth resistor is also connected with a second signal port of the lightning protection circuit. The second signal port is used for connecting a fourth signal bus through a fourth signal slot of the shell; the protective earth is connected to the protective earth of the load device. And the second tripping device is disconnected when the second lightning protection device fails, and controls the second auxiliary contact to be disconnected.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit further includes a third plug terminal, and the housing further includes a fifth signal slot and a sixth signal slot. The second end of the fifth resistor is connected with the first end of the second auxiliary contact through a third plug terminal; and the third plug terminal is used for disconnecting the branch circuit where the fifth resistor is located when the third plug terminal is pulled out. The second end of the second auxiliary contact comprises a third contact and a fourth contact, wherein the third contact is a normally closed contact, and the fourth contact is a normally open contact. The third contact is used for connecting a fifth signal bus through a fifth signal slot; the fourth contact is used for connecting a sixth signal bus bar through a sixth signal slot.

With reference to the first aspect, in a possible implementation manner, the housing further includes a third plug structure, and the third plug structure includes a third female end and a third male end. The third male end comprises a third plug terminal; when the third male end is pulled out from the third female end, the third plug terminal is pulled out.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit further includes a fourth plug terminal, the fourth plug terminal is connected between the third contact and the sixth resistor, and the fourth plug terminal is configured to open a branch where the sixth resistor is located when the fourth plug terminal is pulled out.

With reference to the first aspect, in a possible implementation manner, the housing further includes a fourth plug structure, and the fourth plug structure includes a fourth female end and a fourth male end. The fourth male end comprises a fourth plug terminal; when the fourth male end is pulled out from the fourth female end, the fourth plug terminal is pulled out.

With reference to the first aspect, in a possible implementation manner, the lightning protection circuit further includes a fourth plug terminal, and the housing further includes a fifth signal slot and a sixth signal slot. The first end of the second auxiliary contact is connected with the fifth resistor, the second end of the second auxiliary contact comprises a third contact and a fourth contact, the third contact is a normally closed contact, and the fourth contact is a normally open contact. The fourth plug terminal is connected between the third contact and the sixth resistor, the fourth plug terminal is used for enabling a branch circuit where the sixth resistor is located to be broken when the fourth plug terminal is pulled out, the third contact is used for being connected with a fifth signal bus bar through a fifth signal slot, and the fourth contact is used for being connected with the sixth signal bus bar through the sixth signal slot.

With reference to the first aspect, in one possible implementation manner, the lightning protection circuit further includes a seventh resistor and a fourth diode. The second end of the fifth resistor is connected with the anode of the fourth diode through the seventh resistor, and the cathode of the fourth diode is connected with the second signal port.

With reference to the first aspect, in one possible implementation manner, the lightning protection device is any one of a varistor, a graphite gap, a gas discharge tube, or a metal gap lightning protection device.

With reference to the first aspect, in one possible implementation manner, the power bus bar is a dc power bus bar or an ac power bus bar.

With reference to the first aspect, in a possible implementation manner, one side of the housing is provided with a lock catch, and the lock catch is used for being embedded into a corresponding hole slot to fix the lightning protection device.

With reference to the first aspect, in one possible implementation manner, the housing further includes a drawing structure. The drawing structure is arranged at the front end of the shell and used for plugging and unplugging the lightning protection device.

In a second aspect, the present application further provides a power distribution device, including the lightning protection device provided in the foregoing implementation manner, further including a power distribution box and at least one power distribution device. The distribution box comprises a power supply busbar; the first end of the distribution device is provided with a wiring port which is used for connecting a power line or a user load wiring. And a power slot is arranged at the second end of the power distribution device and used for plugging a power supply bus bar.

With reference to the second aspect, in one possible implementation manner, the distribution box includes at least two lightning protection devices, and the at least two lightning protection devices share the power busbar and the first signal busbar.

Combine the second aspect, in a possible implementation, lightning protection device and distribution device install in the space of a frame unit U, owing to can realize the direct female plug installation and the maintenance of arranging of butt joint of lightning protection device in the space, do not need the lightning protection device base, have avoided independently setting up the watch-dog for every lightning protection device, have promoted the convenience of lightning protection device installation, maintenance and control to material cost has been saved.

In a third aspect, the present application further provides a power distribution system, including the power distribution device provided in the above embodiment, where the power distribution device includes at least two of the following: a first power distribution device and a second power distribution device. The first power distribution equipment and the second power distribution equipment are stacked up and down, and the wiring direction of the first power distribution equipment is consistent with that of the second power distribution equipment; or the first power distribution equipment and the second power distribution equipment are stacked up and down, and the wiring direction of the first power distribution equipment is opposite to that of the second power distribution equipment; or the first power distribution equipment and the second power distribution equipment are stacked in a staggered manner, and the wiring directions of the first power distribution equipment and the second power distribution equipment are consistent.

Drawings

Fig. 1 is a schematic view of a lightning protection device according to an embodiment of the present application;

fig. 2 is an external view of a lightning protection device according to an embodiment of the present disclosure;

fig. 3A is an exemplary varistor provided in an embodiment of the present application;

FIG. 3B is an exemplary graphite gap provided in an embodiment of the present application;

FIG. 3C is an exemplary gas discharge tube provided in accordance with an embodiment of the present application;

FIG. 3D is an exemplary metal gap lightning arrester provided by an embodiment of the present application;

fig. 4 is a schematic view of another lightning protection device provided in the embodiment of the present application;

FIG. 5 is a schematic view of another lightning protection device provided in the embodiments of the present application;

fig. 6 is an external view schematically illustrating another lightning protection device according to an embodiment of the present application;

FIG. 7 is a schematic view of another lightning protection device according to an embodiment of the present application;

FIG. 8 is a schematic view of another lightning protection device provided in the embodiments of the present application;

fig. 9A is a schematic view of another lightning protection device according to an embodiment of the present application;

fig. 9B is a schematic diagram of the plug terminal and the resistor connected in series according to the embodiment of the present disclosure;

fig. 10 is an external view schematic diagram corresponding to fig. 9A provided in the embodiment of the present application;

fig. 11 is another schematic external view corresponding to fig. 9A provided in an embodiment of the present application;

FIG. 12 is a schematic view of another lightning protection device provided in the embodiments of the present application;

FIG. 13 is a schematic view of another lightning protection device according to an embodiment of the present application;

fig. 14 is an external view schematic diagram corresponding to fig. 13 provided in an embodiment of the present application;

FIG. 15 is a schematic view of another lightning protection device provided in the embodiments of the present application;

FIG. 16 is a schematic view of another lightning protection device according to an embodiment of the present application;

fig. 17 is an external view of another lightning protection device according to an embodiment of the present application;

fig. 18A is a schematic view of another lightning protection device provided in the embodiments of the present application;

fig. 18B is an external view of the lightning protection device corresponding to fig. 18A according to an embodiment of the disclosure;

FIG. 18C is a schematic view of another lightning protection device according to an embodiment of the present application;

FIG. 18D is a schematic view of another lightning protection device according to an embodiment of the present application;

FIG. 18E is a schematic view of another lightning protection device according to an embodiment of the present application;

FIG. 18F is a schematic view of another lightning protection device according to an embodiment of the present application;

FIG. 18G is a schematic view of another lightning protection device according to an embodiment of the present application;

FIG. 18H is a schematic diagram of a fuse triggering indicator according to an embodiment of the present disclosure;

fig. 19A is a schematic diagram of a power distribution apparatus provided in an embodiment of the present application;

fig. 19B is a schematic diagram of another power distribution apparatus provided by an embodiment of the present application;

fig. 20 is a schematic diagram of a multiple lightning protection device analog quantity combination alarm provided in the embodiment of the present application;

fig. 21 is a schematic diagram of a multiple lightning protection device trunk junction combination alarm provided in the embodiment of the present application;

fig. 22 is a schematic diagram of a power distribution system provided by an embodiment of the present application;

fig. 23 is a schematic diagram of another power distribution system provided in an embodiment of the present application.

Detailed Description

In order to make those skilled in the art better understand the technical solution provided by the embodiment of the present application, an application scenario of the lightning protection device provided by the present application is first described below.

The lightning protector is used for protecting an electric circuit when surge caused by lightning stroke or other instantaneous overvoltage occurs in the electric circuit, and the working principle of the lightning protector is that the lightning protector presents high impedance when the instantaneous overvoltage does not exist, and the impedance of the lightning protector is suddenly changed into a low value when the instantaneous overvoltage caused by lightning is responded, so that lightning current is allowed to pass through, and further system equipment is protected.

Communication base stations involve alternating current lightning protection and direct current lightning protection, and generally a plurality of lightning protection devices are arranged to ensure system safety. The lightning protection device is a vulnerable device, namely, the lightning protection device is likely to fail due to a large number of lightning strokes or large energy, so that the lightning protection device needs to be replaced in time.

The unit used by the Electronic Industry Alliance (EIA) to calibrate machine room equipment such as servers and network switches is called a rack unit. One rack unit is called "1U", and the height of 1U is 44.45 mm. The traditional lightning protection device adopts guide rail installation formula lightning protection device more, receives the restriction of guide rail installation base, and occupation space is high, can't arrange in the height of a frame unit, need carry out the wiring connection, and whether breaking down in order to confirm guide rail installation formula lightning protection device, still need follow the independent pin connection of lightning protection device to watch-dog, and maintainer regularly observes the detector and then confirms whether breaking down in guide rail installation formula lightning protection device.

In order to ensure the safety of the base station equipment, a plurality of lightning protection devices are generally required to be arranged, and the existing lightning protection devices do not support combination alarm, so that monitors are required to be correspondingly arranged for each lightning protection device and wiring is carried out, and the material cost and the installation time are increased. In addition, the monitor devices are distributed, which is inconvenient for centralized monitoring and management and maintenance, and thus, the requirements of high density, easy installation and maintenance, etc. cannot be met.

In order to solve the problem that the fault alarm of the lightning protector is inflexible, the lightning protector, the power distribution equipment and the power distribution system are provided, convenience in installation, maintenance and monitoring of the lightning protector is improved, and material cost is saved.

The lightning protection device in the embodiment of the application is a voltage limiting type lightning protection device, and the fault or failure of the lightning protection device is represented by the fact that an internal lightning protection device is short-circuited.

The technical solution of the present application will be described in detail below with reference to the accompanying drawings.

The terms "first", "second", and the like in the following description of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

In the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection, a removable connection, or an integral part; may be directly connected or indirectly connected through an intermediate.

Referring to fig. 1, the drawing is a schematic view of a lightning protection device provided in an embodiment of the present application.

The illustrated lightning protection device includes a lightning protection circuit 10 and a housing 20. The lightning protection circuit 10 is disposed inside the housing 20.

The lightning protection circuit 20 includes a lightning protection device 101, a trip unit XT1, an auxiliary contact XT2, a first resistor R1, and a second resistor R2.

A first port (shown as + in the figure) of the lightning protection circuit 10 is connected with a second port (shown as-in the figure) of the lightning protection circuit 10 through the lightning protection device 101, the tripping device XT1 is also connected with a first end of a first resistor R1, and a second end of a first resistor R1 is connected with the second port after passing through an auxiliary contact XT2 and a second resistor R2.

The tripping device XT1 and the auxiliary contact XT2 are locked, and the tripping device XT1 is opened when the lightning protection device 101 is in fault and controls the auxiliary contact XT2 to be opened.

In some embodiments, the trip device XT1 may be a thermal trip or an electromagnetic trip.

The second terminal of the first resistor R1 is also connected to a first Signal port (represented by Signal) of the lightning protection circuit.

The working principle of the lightning protection circuit is explained below.

The resistance values of R1 and R2 can be determined in advance, and the following description will be given by taking an example in which the resistance value of R1 is much larger than that of R2.

The voltage at the first port of the lightning protection circuit 10 is represented by U1, the voltage at the second port is represented by U0, and the voltage at the first signal port is represented by U2.

When the lightning protection device 101 is normal, the tripping device XT1 and the auxiliary contact XT2 are closed, and the size of U2 is approximate to U0. When the lightning protection device 101 fails, the tripping device XT1 is opened and controls the auxiliary contact XT2 to be opened, and the size of the U2 is approximate to that of U1.

For another example, the resistance value of R1 may be larger than R2. At this time, when the lightning protection device 101 is normal, the size of U2 is approximately U1. When the lightning protection device 101 fails, the size of U2 is approximately U0.

In practical application, the resistance values of R1 and R2 are known parameters, and according to the principle of resistance voltage division, the voltage of the first signal port changes before and after the contact XT2 is disconnected, and the fault alarm of the lightning arrester is realized by detecting the voltage change.

Reference is also made to fig. 2, which is an appearance schematic diagram of a lightning protection device provided in the embodiment of the present application.

The first port is connected to a first slot 201 of the housing 20 and the second port is connected to a second slot 202 of the housing 20.

The first slot 201 and the second slot 202 are used for connecting a power supply bus bar, and the first signal port is used for connecting a first signal bus bar through a first signal slot 203 of the housing 20.

When the power supply is a direct-current power supply, the power supply busbar comprises a positive busbar and a negative busbar, the first slot 201 is connected with the positive busbar, and the second slot 202 is connected with the negative busbar.

When the power supply is an alternating current power supply, the power supply busbar comprises an alternating current positive busbar and an alternating current negative busbar, the first slot 201 is connected with the alternating current positive busbar, and the second slot 202 is connected with the alternating current negative busbar.

In some embodiments, the first resistor R1 and the second resistor R2 may be only one of them, for example, R1 may be short-circuited after being cancelled, or R2 may be short-circuited after being cancelled, and it may still be determined whether the auxiliary contact XT2 is opened by detecting the voltage change of the first signal port.

In summary, by using the lightning protection device provided by the embodiment of the present application, the first signal slot of the lightning protection device can be plugged with the first signal busbar, so as to detect the fault of the lightning protection device, and the connection to the monitor is not required. In addition, a plurality of lightning protection devices can be plugged into the same first signal busbar so as to simultaneously monitor and manage, and therefore monitors do not need to be separately arranged. In conclusion, the lightning protection device can save material cost and improve the convenience of installation, maintenance and monitoring.

The embodiment of the present application does not specifically limit the type of the lightning protection device, and the lightning protection device that may be used includes a Varistor (Varistor), a graphite gap, a Gas Discharge Tube (GDT), a metal gap lightning protection device, and the like, which are described below.

Referring to fig. 3A, an exemplary varistor is provided in an embodiment of the present application.

The voltage dependent resistor is a resistor device with nonlinear current-voltage characteristics, and when the voltage applied to the voltage dependent resistor is lower than the voltage threshold value of the voltage dependent resistor, the flowing current is extremely small, which corresponds to a resistor with a large resistance value.

When the voltage across the varistor exceeds its threshold, the current flowing through it increases sharply, corresponding to a very small resistance resistor.

Referring to fig. 3B, an exemplary graphite gap is provided in accordance with an embodiment of the present application.

The graphite gap lightning protection device mainly utilizes the continuous discharge of multiple layers of gaps, and each layer of discharge gap is insulated from each other, so that the follow current problem is solved, the discharge is carried out layer by layer, and the self current capacity is increased invisibly, therefore, the discharge current is large, no follow current exists, no electric arc is discharged outwards, and the thermal stability is good.

Reference is made to fig. 3C, which is a schematic gas discharge tube provided in accordance with embodiments of the present application.

The gas discharge tube operates on the principle of gas gap discharge, and a certain amount of inert gas is filled in the tube, so that when a certain voltage is applied between two electrodes of the discharge tube, an uneven electric field is generated between the electrodes. Under the action of the electric field, the gas in the tube begins to dissociate. When the voltage is increased to make the field intensity between electrodes exceed the insulation intensity of gas, the gap between the two electrodes will discharge and break down, the insulation state is changed into the conduction state, the voltage between the two electrodes of the discharge tube is maintained at the residual voltage level determined by the discharge arc path after the conduction, the residual voltage is generally very low, thereby avoiding the overvoltage damage of the protected device.

Referring to fig. 3D, an exemplary metal gap lightning arrester is provided according to an embodiment of the present application.

The metal gap lightning protection device is similar to a gas discharge tube in principle and generally comprises two metal terminals which are separated by a certain gap, and when the voltage is increased to a certain degree, the gap is punctured, so that the voltage on protected equipment is prevented from rising.

Referring to fig. 4, the figure is a schematic view of another lightning protection device provided in the embodiment of the present application.

The lightning protection illustrated differs from that of fig. 1 in that it further comprises a third resistor R3 and a first diode D1.

The second end of the first resistor R1 is connected to the anode of the first diode D1 through the third resistor R3, and the cathode of the first diode D1 is connected to the first signal port.

The first diode D1 is used to prevent reverse current through the circuit and the third resistor R3 is used to limit current to protect the circuit.

In order to facilitate visual detection of whether the lightning protection device fails by workers, the application also provides another lightning protection device, and a light-emitting diode is added, and the following specific description is combined with the accompanying drawings.

Referring to fig. 5, the figure is a schematic view of another lightning protection device provided in the embodiment of the present application.

The arrester further includes a second diode D2, a third diode D3, and a fourth resistor R4.

The second diode D2 is a light emitting diode, and the second diode D2 and the fourth resistor R4 are connected in series and then connected in parallel to two ends of the lightning protection device 101. When connected, the anode of the second diode D2 is connected to the first port.

The anode of the third diode D3 is connected to the cathode of the second diode D2, and the cathode of the third diode D3 is connected to the anode of the second diode D2.

When the lightning protection device is normal and the power supply busbar is electrified, the D2 emits light to indicate that the lightning protection device works normally.

When the lightning protection device fails, the internal tripping device XT1 is opened and D2 no longer emits light.

The fourth resistor R4 is used for limiting current, and the D3 is a D2 reverse surge protection diode, so that the D2 is prevented from being broken down by reverse surge/lightning stroke.

Referring to fig. 6, the figure is an appearance schematic view of another lightning protection device provided in the embodiment of the present application.

The housing 20 includes an indication window 204, the indication window 204 corresponding in position to the second diode D2, the indication window 204 being used to view the second diode D2 on the exterior of the lightning protector to determine if the lightning protector is malfunctioning.

Referring to fig. 7, the figure is a schematic view of another lightning protection device provided in the embodiment of the present application.

The lightning protection illustrated differs from that of fig. 4 in that it further comprises a second diode D2 and a third diode D3.

The second diode D2 is a light emitting diode.

The second diode D2 is connected in series between the first resistor R1 and the second resistor R2, and the anode of the second diode D2 is connected to the second end of the first resistor R1.

The anode of the third diode D3 is connected to the cathode of the second diode D2, and the cathode of the third diode D3 is connected to the anode of the second diode D2.

When the lightning protection device is normal and the power supply busbar is electrified, the D2 emits light to indicate that the lightning protection device works normally.

When the lightning protection fails, the internal trip unit XT1 opens and the auxiliary contact XT2 opens, so that D2 no longer illuminates.

Wherein D3 is a D2 reverse surge protection diode, and prevents the breakdown of D2 by reverse surge/lightning strike.

Referring to fig. 8, the figure is a schematic view of another lightning protection device provided in the embodiment of the present application.

The lightning protection device shown in the figure is different from that shown in fig. 4 in that the lightning protection device further comprises a second diode D2, a third diode D3 and a fourth resistor R4.

The second diode D2 is a light emitting diode.

The second diode D2 and the fourth resistor R4 are connected in series and then connected in parallel at two ends of a tripping device XT1, and the anode of the second diode D2 is connected between the lightning protection device 101 and the tripping device XT 1.

The anode of the third diode D3 is connected to the cathode of the second diode D2, and the cathode of the third diode D3 is connected to the anode of the second diode D2.

When the lightning protection device is normal and the power supply busbar is electrified, the D2 emits light to indicate that the lightning protection device works normally.

When the lightning protection fails, the internal trip unit XT1 opens so that D2 no longer illuminates.

The fourth resistor R4 is used for limiting current, and the D3 is a D2 reverse surge protection diode, so that the D2 is prevented from being broken down by reverse surge/lightning stroke.

The lightning protection device provided by the embodiment of the application can also be compatible with a dry contact detection mode, and is specifically described below with reference to the accompanying drawings.

See also fig. 9A and 10. Fig. 9A is a schematic view of another lightning protection device provided in this embodiment of the application, and fig. 10 is an appearance schematic view corresponding to fig. 9A provided in this embodiment of the application.

The lightning protection circuit 10 also includes a first jack terminal XT3, and the housing 20 also includes a second signal slot 205 and a third signal slot 206.

A second end of the first resistor R1 is connected to a first end of the auxiliary contact through a first jack terminal XT 3.

Alternatively, in the connection mode of fig. 9B, the first plug terminal XT3 is connected in series with the first resistor, that is, two terminal contacts of the first plug terminal XT3 are disposed at two ends of the first plug terminal XT 3.

The first plug terminal XT3 is used to open the branch of the first resistor when it is pulled out.

Referring to fig. 11, another schematic view of fig. 9A according to an embodiment of the present application is shown.

In this case, the housing 20 further includes a first plug structure 207, and the first plug structure 207 includes a first male end 207a and a first female end 207 b.

The first male end 207a includes a first jack terminal XT3 that pulls out XT3 when the first male end 207a is pulled out of the first female end 207 b.

The lightning protection device adds a dry contact alarm, as described in detail below.

The second end of the auxiliary contact XT2 includes a first contact that is a normally closed contact (Normal close, NC) and a second contact that is a normally Open contact (NO).

The first contact is used for connecting a second signal bus bar through a second signal slot 205.

The second contact is used for connecting a third signal bus bar through a third signal slot 206.

The dry contact and analog quantity alarm are compatible through whether the resistor R1 is assembled.

In some embodiments, R1 and R2 may be located on the front panel of the lightning protection device to facilitate optional installation.

When the first male terminal 207a is pulled out, the first plug terminal XT3 is pulled out, and the branch of the first resistor R1 is open-circuited, which is a dry contact alarm mode.

When the first male terminal 207a is plugged, the first signal port and the NC shown in the figure become an analog quantity alarm interface.

Continuing to take the example that the resistance value of R1 is far greater than that of R2, when the lightning protection device is normal, the level of the NC point is close to the voltage of the second port; when the lightning protector fails, XT1 and XT2 are disconnected, and the NC point level approaches the voltage of the first port.

In addition, referring to the lightning protection device shown in fig. 12, the lightning protection circuit 10 includes a second plug terminal XT4, and the housing further includes a second signal slot and a third signal slot.

The first end of the auxiliary contact XT2 is connected with a first resistor R1, the second end of the auxiliary contact XT2 comprises a first contact and a second contact, the first contact is a normally closed contact (NC), and the second contact is a normally open contact (NO).

A second plug terminal XT4 is connected between the first contact and the second resistor;

the second plug terminal XT4 is used for breaking the branch where the second resistor is located when being pulled out;

the first contact is used for connecting a second signal bus through a second signal slot;

the second contact is used for connecting a third signal bus bar through a third signal slot.

At this time, the housing 20 further includes a second plug structure, and the second plug structure includes a second female end and a second male end. The second male end includes a second jack terminal XT4 which is pulled out when the second male end is pulled out from the second female end.

When the second male terminal is pulled out, the second plug terminal XT3 is pulled out, and the branch where the second resistor R2 is located is open-circuited, which is a dry contact alarm mode.

When the second male terminal 207a is plugged, the first signal port and the NC shown in the figure become an analog quantity alarm interface.

Continuing to take the example that the resistance value of R1 is far greater than that of R2, when the lightning protection device is normal, the level of the NC point is close to the voltage of the second port; when the lightning protector fails, XT1 and XT2 are disconnected, and the NC point level approaches the voltage of the first port.

Referring to fig. 13, the figure is a schematic view of another lightning protection device provided in the embodiment of the present application.

The lightning protection device shown differs from that of fig. 9A in that the lightning protection circuit further comprises a second jack terminal XT 4. The second plug terminal XT4 is connected between the first contact and the second resistor, and the second plug terminal XT4 is used for disconnecting the branch circuit in which the second resistor is located when being pulled out.

Accordingly, referring to the external view of fig. 14, the housing 20 further includes a second plug structure 208, and the second plug structure 208 includes a second male end 208a and a second female end 208 b. The second male end 208a includes a second jack terminal XT4, and when the second male end 208a is pulled out of the second female end 208b, the second jack terminal XT4 is pulled out.

When the analog quantity alarm is switched to the dry contact alarm, the first plug terminal XT3 and the second plug terminal XT4 can be simultaneously pulled out.

The embodiment of the application also provides a lightning protection device with differential mode and common mode lightning protection capabilities, which is described below with reference to the attached drawings.

Referring to fig. 15, the figure is a schematic view of another lightning protection device provided in the embodiment of the present application.

The illustrated lightning protection device differs from fig. 3 in that the lightning protection circuit 10 further includes a second lightning protection device 102, a second trip unit XT5, a second auxiliary contact XT6, a fifth resistor R5 and a sixth resistor R6.

A Protection Earth (PE) of the lightning protection circuit 10 is connected to the first port through the second lightning protection device 102 and the second trip device XT5, the protection Earth is further connected to a first end of the fifth resistor R5, a second end of the fifth resistor R5 is connected to the first port through the second auxiliary contact XT6 and the sixth resistor R6, and a second end of the fifth resistor R5 is further connected to a second Signal port (represented by Signal2 in the figure) of the lightning protection circuit 10.

The second signal port is used for connecting a fourth signal bus bar through a fourth signal slot of the housing 20.

The protective earth is connected with the protective earth of the load device in a terminal connection mode, or is directly elastically pressed or screwed to the protective earth (generally a metal shell) of the load device through a metal sheet or a metal wire pin.

The second trip device XT5 opens when the second lightning protection device 102 fails and controls the second auxiliary contact XT6 to open.

In other words, in order to implement the differential mode and common mode lightning protection capability, the lightning protection device is equivalent to connecting two lightning protection circuits in fig. 3 together, so for the working principle of the added part, reference may be made to the relevant description in fig. 3, and details of the embodiment of the present application are not repeated here.

In some embodiments, the lightning protection circuit 10 further includes: a seventh resistor R7 and a fourth diode D4. The second end of the fifth resistor R5 is connected to the anode of the fourth diode D4 through the seventh resistor R7, and the cathode of the fourth diode D4 is connected to the second signal port.

The lightning protection device provided by the embodiment of the application can also be compatible with a dry contact detection mode, and is specifically described below with reference to the accompanying drawings.

Referring to fig. 16, the figure is a schematic view of another lightning protection device provided in the embodiment of the present application.

The lightning protection circuit 10 further includes a third plug terminal XT7, and the housing 20 further includes a fifth signal slot and a sixth signal slot.

A second end of the fifth resistor R5 is connected to a first end of a second auxiliary contact XT6 through a third jack terminal XT 7.

The third plug terminal XT7 is used to disconnect the branch in which the fifth resistor R5 is located when unplugged.

In some embodiments, the housing 20 further includes a third plug structure including a third female end and a third male end. The third male end comprises a third plug terminal XT7, and when the third male end is pulled out from the third female end, the third plug terminal XT7 is pulled out. The schematic diagram of the third plug structure is similar to the first plug structure 207 and the second plug structure 208 in fig. 14.

The second end of the second auxiliary contact XT6 includes a third contact and a fourth contact, wherein the third contact is a normally closed contact (shown as NC 2) and the fourth contact is a normally open contact (shown as NO 2).

The third contact is used for connecting a fifth signal bus bar through a fifth signal slot.

The fourth contact is used for connecting a sixth signal bus bar through a sixth signal slot.

When the third male terminal is pulled out, the third plug terminal XT7 is pulled out, and the branch where the fifth resistor R5 is located is open-circuited, which is a dry contact alarm mode.

When the third male terminal is plugged in, the second signal port and the NC2 are shown to become an analog alarm interface.

Taking the resistance value of R5 much larger than that of R6 as an example, when the lightning protection device is normal, the NC2 level approaches the voltage of the first port; when the lightning protector fails, XT5 and XT6 are disconnected, and the NC2 level approaches the voltage of PE.

Further, the lightning protection circuit 10 further includes a fourth plug terminal XT 8.

A fourth jack terminal XT8 is connected between the third contact and a sixth resistor R6.

The fourth plug terminal is used for disconnecting the branch where the sixth resistor R6 is located when being pulled out.

At this time, the housing 20 further includes a fourth plug structure, and the fourth plug structure includes a fourth female end and a fourth male end. Wherein the fourth male end comprises a fourth mating terminal. When the fourth male end is pulled out from the fourth female end, the fourth plug terminal is pulled out.

In other embodiments, only the fourth plug terminal XT8 may be provided, the third plug terminal XT7 may be eliminated, and only the fourth plug structure and the third plug structure may be eliminated.

Further, in order to facilitate the visual detection of whether the second lightning protection device 102 fails by the staff, a light emitting diode may be further added to the lightning protection circuit, and an indication window is correspondingly added to the housing, where the specific circuit is similar to the description in fig. 5 to 8, and is not described herein again in this embodiment.

Referring to fig. 17, the figure is an external view schematically illustrating another lightning protection device provided in the embodiment of the present application.

The housing 20 of the lightning protector is also shown provided with a catch 209 and a pull-out structure 210.

Wherein, when the lightning protection device is inserted into the corresponding mounting position of the rack, the latch 209 is used to be inserted into the corresponding hole slot to fix the housing 20 of the lightning protection device. The latches 209 are disposed corresponding to the holes and slots of the frame, and the number and positions of the latches 209 are not specifically limited in the embodiment of the present application.

The drawing structure 210 is disposed at the front end of the housing 20 for performing a plugging operation on the lightning protector. In some embodiments, the drawn structure is a bar-shaped protruding structure. In other embodiments, the pull structure 210 is a tab structure.

The lightning protection device provided by the embodiment can be applied to power distribution equipment and a power distribution system, and in order to further improve the space utilization rate and the integration degree of the power distribution equipment in practical application, the lightning protection device can be integrated with a connector, a disconnecting device or a fuse, which is specifically described below by combining with the accompanying drawings.

See also fig. 18A and 18B. Fig. 18A is a schematic view of another lightning protection device provided in this embodiment of the application, and fig. 18B is an appearance schematic view of the lightning protection device corresponding to fig. 18A provided in this embodiment of the application.

The lightning protection device is shown equipped with a connector function, the housing of the lightning protection device comprising a first connection port 211 and a second connection port 212. The first connection port 211 is connected to a first end of the lightning protection device, and the second connection port 212 is connected to a second end of the lightning protection device.

The first connection port 211 and the second connection port 212 are used for connecting load devices.

This lightning protection device possesses the function of connector this moment, can connect outside load equipment, can not additionally occupy the position of slot when using this lightning protection device, has promoted distribution equipment's space utilization and distribution equipment's integrated degree.

Further, refer to fig. 18C, which is a schematic view of another lightning protection device provided in the embodiments of the present application.

The lightning protection device shown in the figure also comprises a disconnecting device CB which is used for disconnecting to cut off the loop when the circuit has faults such as overload or short circuit.

The disconnecting device CB is disposed on the trunk of the lightning protection circuit, and in some embodiments, the disconnecting device CB is connected in series between the first wiring port 211 and the first end of the lightning protection device 101; in other embodiments, the disconnecting device CB is connected in series between the second connection port 212 and the second end of the lightning protection device 101, i.e. in the position shown in the figure.

The disconnecting device CB is adapted to open when there is an overcurrent in the circuit due to a failure of the lightning protection device 101 and to control the opening of the auxiliary contact XT 2.

This lightning protection device possesses the function of circuit breaker this moment, can also connect outside load equipment, can not additionally occupy the position of slot when using this lightning protection device, has promoted distribution equipment's space utilization and distribution equipment's integrated degree.

Further, refer to fig. 18D, which is a schematic view of another lightning protection device provided in the embodiments of the present application.

The lightning protection device also includes a fuse element F1, the fuse element F1 is a fuse, a first end of the fuse is connected to the second port, and a second end of the fuse is connected to the second port of the lightning protection circuit.

The fuse device F1 is used to blow in the event of a lightning protection circuit failure and to control the opening of the auxiliary contacts.

This lightning protection device possesses the function of fuse this moment, can connect outside load equipment, can not additionally occupy the position of slot when using this lightning protection device, has promoted distribution equipment's space utilization and distribution equipment's integrated degree. In addition, the accuracy of fault detection is improved by the tripping device and the redundant control auxiliary contact during fusing.

In other implementations, see also the lightning protection device of fig. 18E, in which case the lightning protection device may not be provided with a trip device and the auxiliary contacts are controlled entirely by the fuse device F1.

Referring to fig. 18F, the figure is a schematic view of another lightning protection device provided in the embodiment of the present application.

The lightning protection device shown in the figure comprises a fuse element F1 which is a fuse and a fuse triggering indicator connected in parallel, and similarly, see also fig. 18G, in which case the lightning protection device may not be provided with a disconnection device, and the auxiliary contact is completely controlled by the fuse element F1.

The operation of the fuse trigger indicator is explained below.

Referring to fig. 18H, a schematic diagram of a fuse triggering indicator according to an embodiment of the present application is shown.

The fuse trigger indicator may provide a signal and warning to indicate fuse damage to the circuit. The fuse trigger indicator includes a Micro Switch (Micro Switch)181, a fuse striker 182, a base 183, a pin 184, and a pin 185.

The two pins of the base 183 are fixed to the end plate by mounting screws. The distance between the two pins of the base 183 is adjustable within a certain range.

The fuse strikers 182 are mounted on a base 183 and should be parallel to the fuse to be monitored. After the fuse is blown, the striker 182 will be connected to the circuit where the overcurrent occurs and the fuse element in the striker 182 will melt immediately. The striker 182 then contacts the microswitch 181 to automatically generate a signal or switch the circuit.

Based on the lightning protection device provided by the above embodiment, the embodiment of the application provides a power distribution device, which is specifically described below with reference to the accompanying drawings.

See also fig. 19A and 19B for schematic diagrams of the power distribution apparatus.

The power distribution apparatus includes a distribution box 30, at least one lightning protector, and at least one accessory device 40.

The housing of the distribution device 40 has a similar structure to the housing 20 of the lightning protector.

The distribution box 30 includes an upper cover 301 and a bottom plate 306, and the upper cover 301 is opened in fig. 19A. The distribution box 30 includes power busbars 303 and 305 for connecting a first slot and a second slot of the lightning protection device.

The distribution box 30 further comprises a signal busbar 304 for connecting the signal busbar of the lightning protection device, and the number of the signal busbars of the distribution box 30 is not specifically limited in the application.

The upper cover of the distribution box 30 includes a hole groove 302, and after the lightning protector is inserted into the distribution box 30 along the guide rail, the latch 209 is inserted into the corresponding hole groove to fix the lightning protector. The housing of the power distribution device 40 may also be provided with a latch for fastening.

The first end of the power distribution device 40 is provided with a connection port 401, and the connection port 401 is used for connecting a power line or a load connection.

The second end of the power distribution device 40 is provided with a power slot, and the power slot is used for plugging the power supply bus bars 303 and 305.

The lightning protection device and the distribution device 40 are installed in the space of one frame Unit U, extra wiring connection operation is avoided, the height space is effectively saved, high-density power distribution is realized in the 1U space, convenience in installation, management and maintenance of distribution equipment is improved, capacity expansion and maintenance of load equipment are facilitated on site, and the load equipment connected with the distribution equipment is not specifically limited in the embodiment of the application, for example, the lightning protection device and the distribution device can be a router, a switch, a Remote Radio Unit (RRU) or an indoor baseband processing Unit (BBU).

In addition, a plurality of lightning protection devices can be plugged into the same signal bus bar, so that monitors do not need to be separately arranged, and the following specific description shows that the lightning protection devices are not needed.

Referring to fig. 20, the figure is a schematic diagram of a multiple lightning protection device analog quantity combination alarm provided in the embodiment of the present application.

The N lightning protection devices 2001 and 200N are connected in parallel to share the signal bus bar 304.

For the description of the lightning protection circuit 10 of each lightning protection device, reference may be made to the above embodiments, and the description of the embodiments is not repeated herein.

The plug terminals of the lightning protection devices are connected, and at the moment, the lightning protection devices are in an analog quantity alarm state.

For example, the top path of lightning arrester 2001 has a fault, which causes XT2 to be disconnected, so that the voltage on the left side of the diode D1 becomes 0V, and the voltages on the left sides of the diodes of the remaining lightning arresters are normal, for example, -53V. At this time, the uppermost diode is turned on, the voltage of the signal bus bar 304 becomes about 0V, and the monitoring unit detects the voltage change and reports an alarm. And then the combined alarm is realized, namely, the fault of any path of lightning protection device can cause the voltage change of the signal busbar 304, and then the alarm is given through the monitoring unit.

Referring to fig. 21, the figure is a schematic diagram of a multiple lightning protection device dry junction combination alarm provided in the embodiment of the present application.

The N lightning protection devices 2001 and 200N are connected in parallel, the plug terminals of the lightning protection devices are pulled out, and the lightning protection devices are in a dry contact alarm state.

Normally open contacts (NO) of all lightning protection devices are commonly plugged into the signal bus bar 304a, and the first signal slots 203 of all lightning protection devices are commonly connected with the signal bus bar 304 b. When any lightning protection device fails, the signal busbars 304a and 304b receive the closing signal, and the monitoring unit generates a corresponding alarm.

To sum up, distribution equipment that this application embodiment provided can include a plurality of lightning protection devices, distribution equipment's block terminal includes that two power mother arrange to can be selective set up at least one signal female arranging, a plurality of lightning protection devices support to report an emergency and ask for help or increased vigilance at the dry contact combiner, and can realize the direct female plug installation and the maintenance of arranging of butt joint of lightning protection device in 1U space, do not need the lightning protection device base, avoided independently setting up the watch-dog for every lightning protection device, the lightning protection device installation has been promoted, the convenience of maintenance and control, and material cost has been saved.

Based on the power distribution equipment provided by the above embodiment, the embodiment of the application further provides a power distribution system, which comprises at least two of the following power distribution equipment: first power distribution equipment and second power distribution equipment are described in detail below with reference to the accompanying drawings.

Referring to fig. 22, a schematic diagram of a power distribution system according to an embodiment of the present application is shown.

The first power distribution equipment 501 and the second power distribution equipment 502 of the power distribution system are stacked up and down, the first power distribution equipment 501 is wired downwards, and the second power distribution equipment 502 is wired upwards.

In other embodiments, the first power distribution device 501 and the second power distribution device 502 may also be routed up at the same time or down at the same time.

Referring to fig. 23, a schematic diagram of another power distribution system provided in the embodiments of the present application is shown.

The first power distribution equipment 121 and the second power distribution equipment 122 of the power distribution system are stacked in a front-back staggered mode, and the routing wires of the first power distribution equipment 121 and the second power distribution equipment 122 are upwards routed.

It will be appreciated that the two illustrated power distribution devices may also be routed down simultaneously by changing the split level position.

Of course, the above routing manner is only an exemplary routing manner. In practical application, other wiring modes can be selected according to the space size. Therefore, the present invention is not limited to the wiring method of each power distribution device in the power distribution system.

This distribution system has included the distribution equipment that provides in the more than two at least embodiments, every distribution equipment can include a plurality of lightning protection devices, distribution equipment's block terminal includes that two power bars are female, and can be selective set up at least one signal female arranging, a plurality of lightning protection devices support to close the way at the dry contact and report an emergency and ask for help or increased vigilance that closes the way, and can realize the direct female plug installation and the maintenance of arranging of butt joint of lightning protection device in 1U space, need not the lightning protection device base, avoided independently setting up the watch-dog for every lightning protection device, the lightning protection device installation has been promoted, the convenience of maintenance and control, and material cost has been saved.

It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In addition, some or all of the units and modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims (31)

1. The lightning protection device is characterized by being used for connecting a power supply busbar and comprising a shell and a lightning protection circuit arranged in the shell; the lightning protection circuit comprises a lightning protection device, a tripping device, an auxiliary contact and at least one of the following resistors: a first resistor or a second resistor; the shell comprises a first slot, a second slot and a first signal slot;

the first port of the lightning protection circuit is connected with the second port of the lightning protection circuit through the lightning protection device and a tripping device, and the first port is directly connected with the first signal port of the lightning protection circuit or connected with the first signal port of the lightning protection circuit through the first resistor;

the first signal port and the second port are connected through the auxiliary contact or connected with the second resistor through the auxiliary contact;

the first port is connected with the first slot, the second port is connected with the second slot, the first signal port is connected with the first signal slot, the first slot and the second slot are used for connecting the power supply bus bar, and the first signal slot is used for connecting the first signal bus bar;

the tripping device is used for disconnecting when the lightning protection device has a fault and controlling the auxiliary contact to be disconnected.

2. The lightning protection device according to claim 1, wherein the housing includes a first wiring port and a second wiring port;

the first wiring port is connected with a first end of the lightning protection device, and the second wiring port is connected with a second end of the lightning protection device;

the first wiring port and the second wiring port are used for connecting load equipment.

3. The lightning protection device of claim 2, wherein the lightning protection circuit further comprises a disconnect device disposed in a trunk of the lightning protection circuit;

the disconnecting device is connected between the first wiring port and the first end of the lightning protection device in series, or the disconnecting device is connected between the second wiring port and the second end of the lightning protection device in series;

the disconnecting device is used for disconnecting when the lightning protection device fails and controlling the auxiliary contact to be disconnected.

4. The lightning protection device according to claim 2, wherein the lightning protection circuit further comprises a fuse device, a first end of the fuse device being connected to the second connection port, a second end of the fuse device being connected to the second port;

the fusing device is used for fusing when the lightning protection device fails and controlling the auxiliary contact to be disconnected.

5. The lightning protection device according to claim 4, wherein the fuse device is a fuse and a fuse firing indicator connected in parallel, or the fuse device is a fuse.

6. The lightning protection device according to any one of claims 1-5, wherein the lightning protection circuit further comprises a third resistor and a first diode;

the first signal port is connected with the cathode of the first diode, and the second end of the third resistor is connected with the anode of the first diode;

and the first end of the third resistor is connected with the first port, or is connected with the first port through the first resistor.

7. The lightning protection device of claim 6, further comprising a second diode, a third diode, and a fourth resistor;

the second diode is a light emitting diode;

the second diode and the fourth resistor are connected in series and then connected in parallel at two ends of the lightning protection device, wherein the anode of the second diode is connected with the first port;

the anode of the third diode is connected with the cathode of the second diode, and the cathode of the third diode is connected with the anode of the second diode.

8. The lightning protection device of claim 6, wherein the lightning protection circuit includes the first and second resistors, the lightning protection device further including second and third diodes;

the second diode is a light emitting diode;

the second diode is connected between the first resistor and the second resistor in series, and the anode of the second diode is connected with the second end of the first resistor;

the anode of the third diode is connected with the cathode of the second diode, and the cathode of the third diode is connected with the anode of the second diode.

9. The lightning protection device of claim 6, further comprising a second diode, a third diode, and a fourth resistor;

the second diode is a light emitting diode;

the second diode and the fourth resistor are connected in series and then connected in parallel at two ends of the tripping device, wherein the anode of the second diode is connected between the lightning protection device and the tripping device;

the anode of the third diode is connected with the cathode of the second diode, and the cathode of the third diode is connected with the anode of the second diode.

10. The lightning protection device according to any one of claims 7 to 9, wherein the housing includes an indication window positioned to correspond to the second diode, the indication window being configured to view the second diode outside of the lightning protection device.

11. The lightning protection device of claim 10, wherein a lightning protection circuit includes the first resistor, the lightning protection circuit further includes a first plug terminal, the housing further includes a second signal socket and a third signal socket;

the second end of the first resistor is connected with the first end of the auxiliary contact through the first plug terminal;

the first plug-in terminal is used for enabling the branch where the first resistor is located to be in an open circuit when being pulled out;

the second end of the auxiliary contact comprises a first contact and a second contact, wherein the first contact is a normally closed contact, and the second contact is a normally open contact;

the first contact is used for being connected with a second signal bus through the second signal slot;

the second contact is used for connecting a third signal bus bar through the third signal slot.

12. The lightning protection device according to claim 11 wherein the housing further comprises a first plug structure comprising a first female end and a first male end;

the first male end comprises the first plug terminal;

when the first male end is pulled out from the first female end, the first plug terminal is pulled out.

13. The lightning protection device according to claim 11 or 12, wherein a lightning protection circuit further comprises the second resistor, the lightning protection circuit further comprising a second plug terminal;

the second plug terminal is connected between the first contact and the second resistor;

the second plug terminal is used for enabling the branch where the second resistor is located to be in an open circuit when the second plug terminal is pulled out.

14. The lightning protection device according to claim 13 wherein the housing further comprises a second plug structure comprising a second female end and a second male end;

the second male end comprises the second plug terminal;

when the second male end is pulled out from the second female end, the second plug terminal is pulled out.

15. The lightning protection device of claim 10, wherein the lightning protection circuit includes a second resistor, the lightning protection circuit further includes a second plug terminal, the housing further includes a second signal socket and a third signal socket;

the first end of the auxiliary contact is connected with the first end of the third resistor, and the second end of the auxiliary contact comprises a first contact and a second contact, wherein the first contact is a normally closed contact, and the second contact is a normally open contact;

the second plug terminal is connected between the first contact and the second resistor;

the second plug terminal is used for enabling the branch where the second resistor is located to be in an open circuit when being pulled out;

the first contact is used for being connected with a second signal bus through the second signal slot;

the second contact is used for connecting a third signal bus bar through the third signal slot.

16. The lightning protection device according to claim 15 wherein the housing further comprises a second plug structure comprising a second female end and a second male end;

the second male end comprises the second plug terminal;

when the second male end is pulled out from the second female end, the second plug terminal is pulled out.

17. The lightning protection device according to claim 1, wherein the lightning protection circuit comprises a first resistor and a second resistor, the lightning protection circuit further comprising a second lightning protection device, a second trip device, a second auxiliary contact, a fifth resistor, and a sixth resistor; wherein,

the protection ground of the lightning protection circuit is connected with the first port through the second lightning protection device and a second tripping device, the protection ground is also connected with a first end of a fifth resistor, and a second end of the fifth resistor is connected with the first port through the second auxiliary contact and the sixth resistor; the second end of the fifth resistor is also connected with a second signal port of the lightning protection circuit;

the second signal port is used for being connected with a fourth signal bus through a fourth signal slot of the shell;

the protective earth is connected with the protective earth of the load device;

and the second tripping device is disconnected when the second lightning protection device fails, and controls the second auxiliary contact to be disconnected.

18. The lightning protection device of claim 17, wherein the lightning protection circuit further comprises a third jack terminal, the housing further comprising a fifth signal slot and a sixth signal slot;

the second end of the fifth resistor is connected with the first end of the second auxiliary contact through the third plug terminal;

the third plug terminal is used for enabling the branch where the fifth resistor is located to be in an open circuit when the third plug terminal is pulled out;

the second end of the second auxiliary contact comprises a third contact and a fourth contact, wherein the third contact is a normally closed contact, and the fourth contact is a normally open contact;

the third contact is used for connecting a fifth signal bus through the fifth signal slot;

the fourth contact is used for connecting a sixth signal bus bar through the sixth signal slot.

19. The lightning protection device according to claim 18 wherein the housing further comprises a third plug structure comprising a third female end and a third male end;

the third male end comprises the third plug terminal;

and when the third male end is pulled out from the third female end, the third plug terminal is pulled out.

20. The lightning protection device according to claim 18 or 19, wherein the lightning protection circuit further comprises a fourth plug terminal;

the fourth plug terminal is connected between the third contact and the sixth resistor;

and the fourth plug terminal is used for disconnecting the branch where the sixth resistor is located when the fourth plug terminal is pulled out.

21. The lightning protection device according to claim 20 wherein the housing further comprises a fourth plug structure comprising a fourth female end and a fourth male end;

the fourth male end comprises the fourth plug terminal;

and when the fourth male end is pulled out from the fourth female end, the fourth plug terminal is pulled out.

22. The lightning protection device of claim 17, wherein the lightning protection circuit further comprises a fourth jack terminal, the housing further comprising a fifth signal slot and a sixth signal slot;

the first end of the second auxiliary contact is connected with the fifth resistor, and the second end of the second auxiliary contact comprises a third contact and a fourth contact, wherein the third contact is a normally closed contact, and the fourth contact is a normally open contact;

the fourth plug terminal is connected between the third contact and the sixth resistor;

the fourth plug terminal is used for enabling the branch where the sixth resistor is located to be in an open circuit when the fourth plug terminal is pulled out;

the third contact is used for connecting a fifth signal bus through the fifth signal slot;

the fourth contact is used for connecting a sixth signal bus bar through the sixth signal slot.

23. The lightning protection device according to claim 17, wherein the lightning protection circuit further comprises: a seventh resistor and a fourth diode;

the second end of the fifth resistor is connected with the anode of the fourth diode through the seventh resistor, and the cathode of the fourth diode is connected with the second signal port.

24. The lightning protection device of claim 1, wherein the lightning protection device is one of:

piezoresistors, graphite gaps, gas discharge tubes or metal gap lightning arresters.

25. The lightning protection device according to claim 1, wherein the power bus bar is a dc power bus bar or an ac power bus bar.

26. The lightning protection device according to claim 1, wherein a latch is provided on one side of the housing;

the lock catch is used for being embedded into the corresponding hole groove to fix the lightning protection device.

27. The lightning protection device of claim 1, wherein the housing further comprises: drawing the structure;

the drawing structure is arranged at the front end of the shell;

the drawing structure is used for plugging and unplugging the lightning protection device.

28. An electrical distribution apparatus, comprising at least one lightning protection device according to any one of claims 1 to 27, further comprising: a distribution box and at least one distribution device;

the power distribution box comprises a power supply busbar inside;

the first end of the distribution device is provided with a wiring port which is used for connecting a power line or a user load wiring;

and a power slot is arranged at the second end of the power distribution device and used for being plugged with the power supply busbar.

29. The electrical distribution apparatus of claim 28, wherein the electrical distribution box comprises at least two of the lightning arresters, the at least two lightning arresters sharing the power bus bar and the first signal bus bar.

30. The electrical distribution apparatus of claim 28 or 29, wherein the lightning protection device and the power distribution device are mounted in the space of one rack unit U.

31. An electrical distribution system comprising the electrical distribution apparatus of any of claims 28-30, the electrical distribution apparatus comprising at least two of: a first power distribution device and a second power distribution device;

the first power distribution equipment and the second power distribution equipment are stacked up and down, and the wiring direction of the first power distribution equipment is consistent with that of the second power distribution equipment; or,

the first power distribution equipment and the second power distribution equipment are stacked up and down, and the wiring direction of the first power distribution equipment is opposite to that of the second power distribution equipment; or,

the first power distribution equipment and the second power distribution equipment are stacked in a staggered mode from front to back, and the wiring directions of the first power distribution equipment and the second power distribution equipment are consistent.

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