CN210273492U - Strong electromagnetic pulse comprehensive protection device - Google Patents

Strong electromagnetic pulse comprehensive protection device Download PDF

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CN210273492U
CN210273492U CN201921402827.XU CN201921402827U CN210273492U CN 210273492 U CN210273492 U CN 210273492U CN 201921402827 U CN201921402827 U CN 201921402827U CN 210273492 U CN210273492 U CN 210273492U
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output terminal
protection unit
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com
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郑亦菲
陈兵
李宣庆
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Sichuan Sunup Science & Technology Co ltd
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Abstract

The utility model discloses a strong electromagnetic pulse comprehensive protection device, which belongs to the field of electromagnetic pulse protection and comprises a phase line L, a neutral line N, a ground line PE, a transient processing module and a steady-state filtering module, wherein the phase line L is connected with the transient processing module and the steady-state filtering module in sequence, the neutral line N is connected with the transient processing module and the steady-state filtering module in sequence, and the ground line PE is connected with the transient processing module; the utility model delays the fast pulse and reduces the rising edge time thereof through the coordination of the transient processing module and the steady-state filtering module, thereby ensuring that the back-stage system has enough time to process the pulse; the functions of the electromagnetic pulse protection equipment are integrated, so that the electromagnetic pulse protection equipment can adapt to various application scenes, and the application range of the protection equipment is enlarged.

Description

Strong electromagnetic pulse comprehensive protection device
Technical Field
The utility model belongs to electromagnetic pulse protection field relates to a protector is synthesized to forceful electric magnetic pulse.
Background
In modern society, various electromagnetic pulses in nature and artificially generated, such as lightning electromagnetic pulses, nuclear pulses (high-altitude nuclear electromagnetic pulses), high-power microwaves, ultra-wideband, internal surges, clutter harmonics, strong electromagnetic pulse interference and the like generated when system equipment operates are more and more frequent, and sensitive electronic systems and equipment are damaged by generated ultrastrong transient pulses; with the development of science and technology, a large number of large-scale integrated circuits are adopted in advanced electronic equipment, and the larger the integration scale is, the more sensitive the electronic equipment is, and the more easily the electronic equipment is interfered by electromagnetic pulses. Therefore, it is imperative to protect sensitive electronic systems and devices from electromagnetic pulses in a comprehensive manner.
The existing protection equipment can be classified into a power supply class, a data class and an antenna feeder class according to functions, wherein the power supply class can be classified into a direct current class and an alternating current class, but the protection equipment often has certain limitations, can only protect electromagnetic pulses with specific energy or frequency spectrum (waveform), and cannot achieve the effect of comprehensive protection especially for fast pulses with short rising edge time, and the protection efficiency needs to be further improved; if the requirements of overall protection of the system and the equipment are met, the electromagnetic pulse protection module, the lightning protection module, the EMI filtering module and the like with single functions are required to be additionally arranged in each system and equipment respectively, and if the equipment is arranged at the same time, the weight and the size of the equipment are greatly influenced, so that the performance of the system and the equipment is not favorably exerted. In modern electronic technology, each system and equipment requires miniaturization, integration and light weight, so the protection scheme is not highly practical.
Disclosure of Invention
The utility model aims to provide a: a strong electromagnetic pulse comprehensive protection device is provided, which solves the problems mentioned in the background technology.
The utility model adopts the technical scheme as follows:
the utility model provides a strong electromagnetic pulse integrated protection device, includes phase line L, neutral conductor N, ground wire PE, transient state processing module and steady state filtering module, phase line L divide into first phase line L1, second phase line L2, third phase line L3, phase line L connects gradually transient state processing module and steady state filtering module, neutral conductor N connects gradually transient state processing module and steady state filtering module, ground wire PE is connected with transient state processing module.
The existing protection equipment can be classified into a power supply class, a data class and an antenna feeder class according to functions, wherein the power supply class can be classified into a direct current class and an alternating current class, but the protection equipment often has certain limitations, can only protect electromagnetic pulses with specific energy or frequency spectrum (waveform), and cannot achieve the effect of comprehensive protection especially for fast pulses with short rising edge time, and the protection efficiency needs to be further improved; if the requirements of overall protection of the system and the equipment are met, the electromagnetic pulse protection module, the lightning protection module, the EMI filtering module and the like with single functions are required to be additionally arranged in each system and equipment respectively, and if the equipment is arranged at the same time, the weight and the size of the equipment are greatly influenced, so that the performance of the system and the equipment is not favorably exerted. In modern electronic technology, each system and equipment requires miniaturization, integration and light weight, so the protection scheme is not highly practical.
The utility model relates to a protector is synthesized to forceful electric magnetic pulse, transient state processing module can let out strong pulse energy put into ground, prevents that rear end high energy transient state from releasing the module and causing the short circuit to ground of short time after the damage under extreme condition. The steady-state filtering module filters strong pulses coupled into the cable and harmonic clutter of a useless frequency band generated during system operation, and simultaneously further clamps residual voltage processed by the transient processing module to prevent spike pulses in the transient processing module from being coupled into a back-end system; through the coordination of the transient processing module and the steady-state filtering module, the fast pulse coupled into the cable is delayed, and the rising edge time of the fast pulse is reduced, so that the rear-stage system is ensured to have sufficient time to process the pulse. The two modules integrate the functions of the electromagnetic pulse protection equipment, and are compared with various original protection equipment which needs to be independently installed, the equipment integration level is higher, the size is reduced, the installation space is saved, the cost is greatly reduced, the electromagnetic pulse protection equipment can adapt to various application scenes, the application range of the protection equipment is increased, and if the electromagnetic pulse protection equipment can be applied to various communication base stations, an electric power system, a large pulse power device, a large scientific research institution, a production and processing workshop, a test turntable, an airborne machine, an missile-borne machine, a vehicle-borne machine, a ship-borne machine, a ground control station, an island reef and other transient strong electromagnetic field environments, strong electromagnetic pulse intrusion into each system and equipment is effectively prevented, and continuous and stable operation of.
Further, the transient processing module includes a first protection unit P1, a second protection unit P2, a third protection unit P3 and a fourth protection unit P4, each protection unit includes a high-energy transient protection module F and a high-energy transient discharge module RV, one end of the high-energy transient protection module F is an input end of the protection unit where the protection unit is located, the other end of the high-energy transient protection module F is connected with one end of the high-energy transient discharge module RV, and the other end of the high-energy transient discharge module RV is an output end of the protection unit where the protection unit is located; the input end of the first protection unit P1, the input end of the second protection unit P2 and the input end of the third protection unit P3 are respectively connected with a first phase line L1, a second phase line L2 and a third phase line L3; the output terminal of the first protection unit P1, the output terminal of the second protection unit P2, and the output terminal of the third protection unit P3 are all connected to the ground line PE, the input terminal of the fourth protection unit P4 is connected to the neutral line N, and the output terminal of the fourth protection unit P4 is connected to the ground line PE.
The high-energy transient discharge module RV is connected with the system in parallel, when the system works normally, the open-circuit state of the high-energy transient discharge module RV does not influence the normal work of the system, when strong electromagnetic pulse coupling enters the cable, the cable is conducted in a transient state (ns level), so that strong pulse energy (large pulse current and high pulse voltage) is discharged to the ground and is restored to the open-circuit state after the strong pulse energy is discharged to the ground, and the whole treatment process is in a mu s level and does not influence the work of the system.
The high-energy transient protection module F mainly has the functions of preventing short-time ground short circuit caused by the damage of the rear-end high-energy transient discharge module RV under extreme conditions, namely, the rear-end processing module can be switched off in a transient state after being damaged, the normal work of a system is not influenced, and the functions of automatic fault switching-off and failure transient protection are achieved.
Further, the steady-state filtering module comprises a first capacitor bank, a second capacitor bank, a resistor bank and an inductor bank, wherein the first capacitor bank comprises a capacitor Cx1. Capacitor C x2. Capacitor Cx3, the second capacitor bank comprises a capacitor Cy1. Capacitor C y2. Capacitor Cy3. Capacitor Cy4. Capacitor Cy5. Capacitor Cy6. Capacitor Cy7. Capacitor Cy8, the resistance group includes resistance R1, resistance R2, resistance R3, and the inductance group includes inductance Lcom1. Inductor L com2, the inductance Lcom1 and inductance LcomEach 2 consists of four windings and a magnetic ring;
the first phase line L1 is sequentially connected with a capacitor Cx1 input terminal, resistor R1 input terminal, inductor Lcom1. Capacitor Cy1 input terminal, inductance L com2. Capacitor Cy5, the input ends are connected; the second phase line L2 is sequentially connected with a capacitor C x2, input terminal of resistor R2, inductor Lcom1. Capacitor C y2 input terminal, inductance L com2. Capacitor Cy6, the input ends are connected; the third phase line L3 is sequentially connected with a capacitor Cx3, input terminal of resistor R3, inductor Lcom1. Capacitor Cy3 input terminal, inductance L com2. Capacitor Cy7 is connected with the input end; the neutral line N is connected with the capacitor C in sequencex1 output terminal, resistor R1 output terminal, capacitor C x2, an output terminal of the resistor R2, and a capacitor Cx3, output terminal of resistor R3, inductor Lcom1. Capacitor Cy4 input terminal, inductance L com2. Capacitor Cy8, the ground wire PE is connected with the capacitor C in sequencey1 output terminal, capacitor C y2 output terminal, capacitor Cy3 output terminal and capacitor Cy4 output terminal, capacitor Cy5 output terminal, capacitor Cy6 output terminal, capacitor Cy7 output terminal and capacitor Cy8, and an output terminal.
The steady-state filtering module consists of a filtering device, and the working principle of the steady-state filtering module is basically the same as that of a filter. The main function of the system is to filter out the strong pulse coupled into the cable and the harmonic clutter of the useless frequency band generated during the operation of the system, and further clamp the residual voltage processed by the transient processing module to prevent the spike pulse from being coupled into the back-end system. Through the coordination of the transient processing module and the steady-state filtering module, the fast pulse (mainly unprocessed pulse, the energy of the fast pulse is small, such as the fast pulse with the rising edge less than 5 ns) coupled into the cable is delayed, when the fast pulse is conducted to the module, firstly, most interference pulse (energy) is filtered by the module, the rising edge time of the interference pulse is reduced, secondly, a certain block is formed on other pulse (energy) which cannot be filtered, and the time of conducting the interference pulse to a back-end system is delayed, so that the pulse (energy) is ensured to be processed by the post-stage processing module in sufficient time. The steady-state filtering module further improves the comprehensive protection performance, has high-energy transient absorption prevention capability and carries out ultrafast discharge on the invasion pulse.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model relates to a strong electromagnetic pulse synthesizes protector, through setting up transient state processing module, can let out strong pulse energy and put into ground, prevent that rear end high energy transient state from releasing the module and causing the short circuit to ground of short time after the damage under extreme condition.
2. The utility model relates to a protector is synthesized to forceful electric magnetic pulse through setting up stable state filtering module, produces the harmonic clutter of useless frequency channel when getting into the strong pulse of cable and the system operation to the coupling and carries out the filtering, carries out further clamp system with the residual pressure after transient state processing module handles simultaneously, avoids peak pulse wherein to couple in the back-end system.
3. The utility model relates to a protector is synthesized to forceful electric magnetic pulse through transient state processing module and stable state filtering module's coordination, delays the fast pulse of coupling income cable, reduces its rise time to ensure that back level system has sufficient time to handle the pulse.
4. The utility model relates to a protector is synthesized to forceful electric magnetic pulse, the function to electromagnetic pulse protective equipment has carried out the integration, make it can adapt to multiple application scene, protective equipment's application range has been increased, if can be applied to various communication basic stations, electric power system, large-scale pulse power device, large-scale scientific research institute, the production and processing workshop, the test revolving stage, the machine carries, the missile carries, on-vehicle, the carrier-borne, transient forceful electric magnetic field environment such as ground control station, island reef, effectively protect each system of forceful electric magnetic pulse invasion, equipment, ensure its continuous steady operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
FIG. 1 is a block diagram of a strong electromagnetic pulse integrated protection device according to the present invention;
fig. 2 is a schematic circuit diagram of a transient processing module according to the present invention;
fig. 3 is a schematic circuit diagram of the steady-state filter module of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention will be described in further detail with reference to the following examples.
Example one
The utility model discloses preferred embodiment provides a strong electromagnetic pulse synthesizes protector, including phase line L, neutral conductor N, ground wire PE, transient state processing module and steady state filtering module, phase line L divide into first phase line L1, second phase line L2, third phase line L3, phase line L connects gradually transient state processing module and steady state filtering module, neutral conductor N connects gradually transient state processing module and steady state filtering module, ground wire PE is connected with transient state processing module.
The existing protection equipment can be classified into a power supply class, a data class and an antenna feeder class according to functions, wherein the power supply class can be classified into a direct current class and an alternating current class, but the protection equipment often has certain limitations and can only protect electromagnetic pulses with specific energy or frequency spectrum, particularly fast pulses with short rising edge time, so that the effect of comprehensive protection cannot be achieved, and the protection efficiency needs to be further improved; if the requirements of overall protection of the system and the equipment are met, the electromagnetic pulse protection module, the lightning protection module, the EMI filtering module and the like with single functions are required to be additionally arranged in each system and equipment respectively, and if the equipment is arranged at the same time, the weight and the size of the equipment are greatly influenced, so that the performance of the system and the equipment is not favorably exerted. In modern electronic technology, each system and equipment requires miniaturization, integration and light weight, so the protection scheme is not highly practical.
The utility model relates to a protector is synthesized to forceful electric magnetic pulse, transient state processing module can let out strong pulse energy put into ground, prevents that rear end high energy transient state from releasing the module and causing the short circuit to ground of short time after the damage under extreme condition. The steady-state filtering module filters strong pulses coupled into the cable and harmonic clutter of a useless frequency band generated during system operation, and simultaneously further clamps residual voltage processed by the transient processing module to prevent spike pulses in the transient processing module from being coupled into a back-end system; through the coordination of the transient processing module and the steady-state filtering module, the fast pulse coupled into the cable is delayed, and the rising edge time of the fast pulse is reduced, so that the rear-stage system is ensured to have sufficient time to process the pulse. The two modules integrate the functions of the electromagnetic pulse protection equipment, and compared with various original protection equipment needing independent installation, the electromagnetic pulse protection equipment has the advantages of higher equipment integration level, reduced volume, saved installation space, greatly reduced cost, capability of adapting to various application scenes, and increased application range of the protection equipment, and can be applied to various communication base stations, electric power systems, large pulse power devices, large scientific research institutions, production and processing workshops, test turntables, airborne machines, missile-borne machines, vehicles, warships, ground control stations, island reefs and other transient strong electromagnetic field environments, so that strong electromagnetic pulses are effectively prevented from invading various systems and equipment, and continuous and stable operation of the systems and equipment is ensured.
Example two
In this embodiment, on the basis of the first embodiment, the transient processing module includes a first protection unit P1, a second protection unit P2, a third protection unit P3, and a fourth protection unit P4, each protection unit includes a high-energy transient protection module F and a high-energy transient discharge module RV therein, one end of the high-energy transient protection module F is an input end of the protection unit where the protection unit is located, the other end of the high-energy transient protection module F is connected with one end of the high-energy transient discharge module RV, and the other end of the high-energy transient discharge module RV is an output end of the protection unit where the protection unit is located; the input end of the first protection unit P1, the input end of the second protection unit P2 and the input end of the third protection unit P3 are respectively connected with a first phase line L1, a second phase line L2 and a third phase line L3; the output terminal of the first protection unit P1, the output terminal of the second protection unit P2, and the output terminal of the third protection unit P3 are all connected to the ground line PE, the input terminal of the fourth protection unit P4 is connected to the neutral line N, and the output terminal of the fourth protection unit P4 is connected to the ground line PE.
The high-energy transient protection module F is an anti-surge hot-melt resistance wire, the high-energy transient protection modules F1-F4 are all anti-surge hot-melt resistance wires, the anti-surge current of the high-energy transient protection modules is 20kA, and the segmentation capability of the high-energy transient protection modules is 200 kA.
The high-energy transient discharge module RV is formed by serially packaging a fuse and a piezoresistor; the alternating-current starting voltage of the high-energy transient discharge modules RV 1-RV 4 is 275V, and the maximum processing capacity is 40 kA.
The high-energy transient discharge module RV is connected with the system in parallel, when the system works normally, the open-circuit state of the high-energy transient discharge module RV does not influence the normal work of the system, when strong electromagnetic pulse coupling enters the cable, the cable is conducted in a transient state (ns level), so that strong pulse energy (large pulse current and high pulse voltage) is discharged to the ground and is restored to the open-circuit state after the strong pulse energy is discharged to the ground, and the whole treatment process is in a mu s level and does not influence the work of the system.
The high-energy transient protection module F mainly has the functions of preventing short-time ground short circuit caused by the damage of the rear-end high-energy transient discharge module RV under extreme conditions, namely, the rear-end processing module can be switched off in a transient state after being damaged, the normal work of a system is not influenced, and the functions of automatic fault switching-off and failure transient protection are achieved.
EXAMPLE III
In this embodiment, on the basis of the first embodiment, the steady-state filtering module includes a first capacitor bank, a second capacitor bank, a resistor bank and an inductor bank, where the first capacitor bank includes a capacitor Cx1. Capacitor C x2. Capacitor Cx3, the second capacitor bank comprises a capacitor Cy1. Capacitor C y2. Capacitor Cy3. Capacitor Cy4. Capacitor Cy5. Capacitor Cy6. Capacitor Cy7. Capacitor Cy8, the resistance group includes resistance R1, resistance R2, resistance R3, and the inductance group includes inductance Lcom1. Inductor L com2, the inductance Lcom1 and inductance LcomEach 2 consists of four windings and a magnetic ring;
the first phase line L1 is sequentially connected with a capacitor Cx1 input terminal, resistor R1 input terminal, inductor Lcom1. Capacitor Cy1 input terminal, inductance L com2. Capacitor Cy5, the input ends are connected; the second phase line L2 is sequentially connected with a capacitor C x2, input terminal of resistor R2, inductor Lcom1. Capacitor C y2 input terminal, inductance L com2. Capacitor Cy6, the input ends are connected; the third phase line L3 is sequentially connected with a capacitor Cx3, input terminal of resistor R3, inductor Lcom1. Capacitor Cy3 input terminal, inductance L com2. Capacitor Cy7 is connected with the input end; the neutral line N is connected with the capacitor C in sequencex1 output terminal, resistor R1 output terminal, capacitor C x2, an output terminal of the resistor R2, and a capacitor Cx3, output terminal of resistor R3, inductor Lcom1. Capacitor Cy4 input terminal, inductance L com2. Capacitor Cy8, the ground wire PE is connected with the capacitor C in sequencey1 output terminal, capacitor C y2 output terminal, capacitor Cy3 output terminal and capacitor Cy4 output terminal, capacitor Cy5 output terminal, capacitor Cy6 output terminal, capacitor Cy7 output terminal and capacitor Cy8, and an output terminal. Inductor Lcom1 and inductance L com2 is 4.5mH with a dc resistance of: 0.6 omega.
A first capacitor bank: capacitor Cx1. Capacitor C x2. Capacitor CxThe capacitance value of 3 is 0.047 muF.
A second capacitor bank: capacitor Cy1. Capacitor C y2. Capacitor Cy3. Capacitor Cy4 has a capacitance of 330 pF; capacitor Cy5. Capacitor Cy6. Capacitor Cy7. Capacitor CyThe capacitance value of 8 is 1.5 nF.
A resistor group: the resistances of the resistor R1, the resistor R2, and the resistor R3 are all 1M Ω.
The steady-state filtering module consists of a filtering device, and the working principle of the steady-state filtering module is basically the same as that of a filter. The main function of the system is to filter out the strong pulse coupled into the cable and the harmonic clutter of the useless frequency band generated during the operation of the system, and further clamp the residual voltage processed by the transient processing module to prevent the spike pulse from being coupled into the back-end system. Through the coordination of the transient processing module and the steady-state filtering module, the fast pulse (mainly unprocessed pulse, the energy of the fast pulse is small, such as the fast pulse with the rising edge less than 5 ns) coupled into the cable is delayed, when the fast pulse is conducted to the module, firstly, most interference pulse (energy) is filtered by the module, the rising edge time of the interference pulse is reduced, secondly, a certain block is formed on other pulse (energy) which cannot be filtered, and the time of conducting the interference pulse to a back-end system is delayed, so that the pulse (energy) is ensured to be processed by the post-stage processing module in sufficient time. The steady-state filtering module further improves the comprehensive protection performance, has high-energy transient absorption prevention capability and carries out ultrafast discharge on the invasion pulse.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents and improvements made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (3)

1. A strong electromagnetic pulse comprehensive protection device is characterized in that: including phase line L, neutral conductor N, ground wire PE, transient state processing module and steady state filtering module, phase line L divide into first phase line L1, second phase line L2, third phase line L3, phase line L connects gradually transient state processing module and steady state filtering module, neutral conductor N connects gradually transient state processing module and steady state filtering module, ground wire PE is connected with transient state processing module.
2. A strong electromagnetic pulse comprehensive protector as claimed in claim 1, characterized in that: the transient processing module comprises a first protection unit P1, a second protection unit P2, a third protection unit P3 and a fourth protection unit P4, each protection unit comprises a high-energy transient protection module F and a high-energy transient discharge module RV, one end of the high-energy transient protection module F is the input end of the protection unit, the other end of the high-energy transient protection module F is connected with one end of the high-energy transient discharge module RV, and the other end of the high-energy transient discharge module RV is the output end of the protection unit; the input end of the first protection unit P1, the input end of the second protection unit P2 and the input end of the third protection unit P3 are respectively connected with a first phase line L1, a second phase line L2 and a third phase line L3; the output terminal of the first protection unit P1, the output terminal of the second protection unit P2, and the output terminal of the third protection unit P3 are all connected to the ground line PE, the input terminal of the fourth protection unit P4 is connected to the neutral line N, and the output terminal of the fourth protection unit P4 is connected to the ground line PE.
3. A strong electromagnetic pulse comprehensive protector as claimed in claim 1, characterized in that: the steady-state filtering module comprises a first capacitor bank, a second capacitor bank, a resistor bank and an inductor bank, wherein the first capacitor bank comprises a capacitor Cx1. Capacitor Cx2. A capacitance Cx3, and a second capacitor bank including a capacitance Cy1. Capacitor Cy2. Capacitor Cy3. Capacitor Cy4. Capacitor Cy5. Capacitor Cy6. Capacitor Cy7. Capacitor Cy8, the resistance group includes resistance R1, resistance R2, resistance R3, and the inductance group includes inductance Lcom1. Inductor Lcom2, the inductance Lcom1 and inductance LcomEach 2 consists of four windings and a magnetic ring;
the first phase line L1 is sequentially connected with a capacitor Cx1 input terminal, resistor R1 input terminal, inductor Lcom1. Capacitor Cy1 input terminal, inductance Lcom2. Capacitor Cy5, the input ends are connected; the second phase line L2 is connected with a capacitor in turnCx2, input terminal of resistor R2, inductor Lcom1. Capacitor Cy2 input terminal, inductance Lcom2. Capacitor Cy6, the input ends are connected; the third phase line L3 is sequentially connected with a capacitor Cx3, input terminal of resistor R3, inductor Lcom1. Capacitor Cy3 input terminal, inductance Lcom2. Capacitor Cy7 is connected with the input end; the neutral line N is connected with the capacitor C in sequencex1 output terminal, resistor R1 output terminal, capacitor Cx2, an output terminal of the resistor R2, and a capacitor Cx3, output terminal of resistor R3, inductor Lcom1. Capacitor Cy4 input terminal, inductance Lcom2. Capacitor Cy8, the ground wire PE is connected with the capacitor C in sequencey1 output terminal, capacitor Cy2 output terminal, capacitor Cy3 output terminal and capacitor Cy4 output terminal, capacitor Cy5 output terminal, capacitor Cy6 output terminal, capacitor Cy7 output terminal and capacitor Cy8, and an output terminal.
CN201921402827.XU 2019-08-27 2019-08-27 Strong electromagnetic pulse comprehensive protection device Active CN210273492U (en)

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CN201921402827.XU CN210273492U (en) 2019-08-27 2019-08-27 Strong electromagnetic pulse comprehensive protection device

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CN201921402827.XU CN210273492U (en) 2019-08-27 2019-08-27 Strong electromagnetic pulse comprehensive protection device

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CN210273492U true CN210273492U (en) 2020-04-07

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