CN206685699U - The lightning protection for power supply that a kind of Large Copacity is through-flow - Google Patents
The lightning protection for power supply that a kind of Large Copacity is through-flow Download PDFInfo
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- CN206685699U CN206685699U CN201720415263.8U CN201720415263U CN206685699U CN 206685699 U CN206685699 U CN 206685699U CN 201720415263 U CN201720415263 U CN 201720415263U CN 206685699 U CN206685699 U CN 206685699U
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Abstract
It the utility model is related to a kind of through-flow lightning protection for power supply of Large Copacity, including lid and module base in module, lid and module base are buckled into module entirety by frame in module, upper strata among module cavity is equipped with circuit board, lower floor is equipped with lightning protection component, the both sides of lightning protection component are equipped with terminal assemblies, and circuit board, lightning protection component and terminal assemblies link together；Equipped with pressure limiting circuit, working indicating, remote signalling indicating circuit on circuit board；Working indicating is provided with light emitting diode, voltage-stabiliser tube, current-limiting resistance and Current Limiting Diodes；Remote signalling indicating circuit contains dropout fuse, switch wire drawing and microswitch.The lightning protection for power supply that a kind of Large Copacity of the present utility model is through-flow, using graphite gaps discharge principle, the impact of Large Copacity high pressure lightning current can be born, while power lightning protection effect is played, lightning protection device also carries the remote signalling contact of eye-catching relay indicating light, the tripping mechanism of safety and remote indication in itself.
Description
Technical field
It the utility model is related to a kind of lightning protection for power supply, the lightning protection for power supply that more particularly to a kind of Large Copacity is through-flow.
Background technology
Lightning protection for power supply (abbreviation SPD) is that a kind of to prevent that induction lightening from damaging to power-supply system and electrical equipment special
With protection device, when the distribution line and electrical equipment of power-supply system are invaded and harassed by high pressure lightning current, inside lightning protection for power supply
Element can quickly form path, lightning impulse current is released importing the earth, while thunder and lightning high pressure is limited in certain
Voltage protection level, play to supply unit and the effect of the lightning protection of electrical equipment；It is theoretical according to lightning protection, Lpz0B indoors
To Lpz1 lightning protection region, the switching type power supply lightning protection device of the waveform of T1 levels 10/350 to be installed in the power supply system, generally
Switching mode lightning protection device is typically made of the element of gap discharge and gas discharge, is had and is resistant to larger lightning impulse, releases greatly
The ability of electric current.
It is exactly one kind of gap discharge lightning protection component using lightning protection for power supply made of Multi-layer graphite material, compared to pressure limiting
The lightning protection for power supply of type, the device of graphite gaps electric discharge belong to switching type power supply lightning protection device, and its advantage is that discharge current is big, leaked electricity
Flow it is small, leaked without afterflow, without electric arc, heat endurance it is good, but this lightning protection for power supply is there is also shortcoming, as residual voltage is high, reflection
Time is slow etc.；Also, conventional switching mode gap lightning protection for power supply indicates without working condition, thread off and protect without itself,
Long-range remote signalling contact output is not provided, the thus application to lightning protection for power supply brings the defects of certain.
Utility model content
For above-mentioned the deficiencies in the prior art, the utility model provides a kind of Large Copacity through-flow lightning protection for power supply, can be with
Improve the capacity of lightning protection device electric discharge and insulate pressure-resistant；The residual voltage of lightning protection device can be reduced and avoid producing stream electric current；And it can accelerate to prevent
The response speed of thunder electric discharge；It may further indicate that the working condition of lightning protection for power supply；Wherein increased dropout fuse and kit,
Both influence when lightning protection component fails to outside power circuit can have been prevented, remote signalling contact can be provided again so that lightning protection management system
Can be in the failure state of remotely monitoring lightning protection device.
The utility model adopts the following technical scheme that：The lightning protection for power supply that a kind of Large Copacity is through-flow, it includes covering in module
And module base, lid and module base are buckled into module entirety, the upper strata among module cavity by frame in the module
Equipped with circuit board, lower floor is equipped with lightning protection component, and the both sides of the lightning protection component are equipped with terminal assemblies, the circuit board, lightning protection group
Part and terminal assemblies link together；Equipped with pressure limiting circuit, working indicating, remote signalling indicating circuit on the circuit board；Institute
State working indicating and be provided with light emitting diode, voltage-stabiliser tube, current-limiting resistance and Current Limiting Diodes；The remote signalling indicating circuit contains
There are dropout fuse, switch wire drawing and microswitch；The switch wire drawing hooks the shell fragment for making microswitch on dropout fuse
In the position pressed.
The lightning protection component includes ten graphite disks, nine insulating washers, two component clamping plates and four clamping plate connecting rods,
A piece of insulating washer is all sandwiched after the graphite disk closed assembly between any two, the graphite disk in two outsides passes through component clamping plate
Fixed, the corner on the inside of the component clamping plate is respectively equipped with a clamping plate connecting rod, is installed with long spiro nail among the clamping plate connecting rod, passes through
Long spiro nail fixation kit clamping plate, then multi-layer stacked graphite disk is clamped；The down either side of the circuit board is also respectively welded with
Five root long pin contact pins, the long pin contact pin are clamped by ten graphite disks of elasticity and lower section and connected.
Second long pin contact pin of ten root long pin contact pins of the circuit board to the 9th long pin contact pin respectively by high-voltage capacitance simultaneously
It is associated on the second to the 9th graphite flake, pressure limiting circuit is formed to earth terminal；First length of ten root long pin contact pins of the circuit board
Pin contact pin is connected by the first graphite disk with the component clamping plate of front side, and the tenth long pin contact pin passes through the tenth graphite disk and rear side
Component clamping plate connects, the front side component clamping plate, light emitting diode, voltage-stabiliser tube, current-limiting resistance, Current Limiting Diodes, insurance of threading off
Silk and rear side component clamping plate are sequentially connected in series；The earth terminal of the pressure limiting circuit is connected to the string of light emitting diode and dropout fuse
Between connection circuit；One end of the switch wire drawing is hooked on dropout fuse, and the other end is hooked on the shell fragment of microswitch；It is described
A voltage-stabiliser tube also in parallel on light emitting diode.
The terminal assemblies are by a twin socket terminal plate and a single head ground terminal blade and three terminal clamping ring groups
Into；The side of the twin socket terminal plate and single head ground terminal blade is respectively mounted by engaging bolts to be consolidated with two component clamping plates
Fixed, the opposite side of the twin socket terminal plate and single head ground terminal blade is cased with a terminal clamping ring, the end respectively
Terminal screw is equipped with sub-folder circle.
It is provided with two power supply wiring holes on front side of the module base, the double end terminal piece inside its holes is mutually conducted；Institute
State and a ground connection wiring hole is provided with rear side of module base.
Remote signalling delivery outlet on rear side of the module base passes through lead built with remote signalling terminal, the pin that goes out of the remote signalling terminal
It is connected with the pin that goes out of the microswitch on circuit board, one group of normally opened and one group of normally closed contact is provided in the remote signalling terminal.
The top surface upper right corner of lid intermediate projections is provided with the indicator lamp hole of a built-in light emitting diode in the module, described
Light emitting diode is serially connected in inside modules working indicating.
Lid front end is provided with two power supply screw holes, L lines or N lines for external power supply in the module；In the module
Cover back-end is provided with an earthing screw hole, for external the earth PE lines.
The rear side in the earthing screw hole is provided with a bus-bar slot, and earth terminal is connected when splicing for multiple modules
Son.
The module base bottom is provided with a guide rail neck；A guide rail is also equipped with below the rear side of the module base
Dop, the outer end of the guide rail dop are provided with a draw ring, and the guide rail dop another side stretches into square guide rail under module base
The side of neck.Advantageous effects of the present utility model are：The lightning protection for power supply that a kind of Large Copacity is through-flow, by using graphite
Disk and the mutual closed assembly of insulating washer and isolation, the lightning protection for power supply unit of Large Copacity is formed, pass through four unit modules
Combination can be used for the lightning protection of three-phase power supply system and electrical equipment；Lightning protection for power supply that this Large Copacity is through-flow on the one hand can be with
Big through-flow, drop residual voltage and high temperature resistant, on the other hand can be without leakage current, antiarcing-over and intermittent current, and also carries instruction work shape
State, autoprotection are threaded off and the remote signalling contact for remote collection lightning protection device failure state, the use to lightning protection for power supply are brought
Safely and conveniently.
Brief description of the drawings
Fig. 1 is a kind of outline structural diagram of the through-flow lightning protection for power supply of Large Copacity of embodiment；
Fig. 2 is a kind of intraware schematic diagram of the through-flow lightning protection for power supply of Large Copacity of embodiment；
Fig. 3 is a kind of graphite gasket schematic diagram of the through-flow lightning protection for power supply of Large Copacity of embodiment；
Fig. 4 is a kind of electrical block diagram of the through-flow lightning protection for power supply of Large Copacity of embodiment；Wherein：Outside 1- modules
Shell, 1a- power supply screw holes, 1b- earthing screws hole, 1c- bus-bar slots, 1d- indicator lamp holes, 2- module bases, 2a- power supplys connect
String holes, 2b- ground connection wiring holes, 2c- remote signalling delivery outlets, 2d- guide rail bayonet sockets, 3- circuit boards, 3a- high-voltage capacitances C1-C8,3b- are steady
Pressure pipe WD, 3c- LED, 3d- current-limiting resistances R, 3e- Current Limiting Diodes, 3f- dropout fuses F, 3g- switch are drawn
Silk, 3h- microswitches, 4- graphite disks, 5- spacer rings, the long pin contact pins of 6-, 7- component clamping plates, 7a- attachment screws, 8- clamping plates
Connecting rod, 9- terminal clamping rings, 10- double end terminal pieces, 10a- terminal screws, 11- single head terminal plates, 12- remote signalling terminals, 13- guide rails
Dop.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole realities
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment obtained, belong to the scope of the utility model protection.
Embodiment
As shown in figure 1, present embodiments provide a kind of through-flow lightning protection for power supply of Large Copacity；It is by the He of lid in module 1
Module base 2 forms, and lid 1 and module base 2 are buckled into module entirety by frame in the module, among module cavity
Upper strata is equipped with circuit board 3, and lower floor is equipped with lightning protection component, and the both sides of the lightning protection component are equipped with terminal assemblies；Lid 1 in the module
The top surface upper right corner of intermediate projections is provided with indicator lamp hole a 1d, the indicator lamp hole 1d and is embedded with a light emitting diode
3c, for indicating the working condition of lightning protection for power supply；The front and back end of lid 1 falls low than middle top surface in the module, and its front end is provided with
Two power supply screw hole 1a, for the L lines or N lines of external power supply, its rear end is provided with an earthing screw hole 1b, for external big
Ground wire；The rear side of the earthing screw hole 1b is provided with a bus-bar slot 1c, and earth terminal is connected when splicing for multiple modules
Son；The front side of the module base 2 is provided with two power supply wiring hole 2a, and double end terminal piece 10 inside it is mutually conducted, during wiring
A power supply wiring hole 2a is only met, can access live wire (L) or zero line (N), the rear side of module base 2 is provided with a ground connection wiring
Hole 2b, for accessing geodesic (PE)；A remote signalling delivery outlet 2c is provided with the right side of the ground connection wiring hole 2b, it is normally opened for providing
The output of normally closed (NO or NC) contact, lightning protection device failure condition signal can be provided to long-range lightning protection management system；The mould
2, block bottom bottom is provided with a guide rail neck 2d, and a guide rail dop 13, institute are also equipped with below the rear side of the module base 2
The outer end for stating guide rail dop 13 is provided with a draw ring with spring, and the another side of guide rail dop 13 stretches into the lower section of module base 2 and led
Lightning protection for power supply, is fixed on the guide rail in power distributing cabinet by rail clip groove 2d side when being easily installed.
As shown in Fig. 2 it is a kind of intraware schematic diagram of the through-flow lightning protection for power supply of Large Copacity of the present embodiment；In figure
Circuit board 3, lightning protection component and terminal assemblies link together, the long pin of each five core of two rows has been welded in the upper both sides of layer circuit board 3
Contact pin 6, the lightning protection component include ten component clamping plates 7 of insulating washer 5, two of graphite disk 4, nine and four clamping plate connecting rods
8；The terminal assemblies are by a twin socket terminal plate 10 and a single head ground terminal blade 11 and three 9 groups of terminal clamping rings
Into；Ten graphite disks 4 in the lightning protection component of lower floor are clamped connection by the circuit board 3 respectively by long pin contact pin 6；Lower floor
The component clamping plate 7 of lightning protection component both sides distinguishes the double end terminal piece 10 and single head terminal plate 11 of connection terminal component；The graphite
A piece of insulating washer 5 is all sandwiched after the closed assembly of disk 4 between any two, the graphite disk 4 in two outsides is solid by component clamping plate 7
Fixed, the corner of the inner side of component clamping plate 7 is respectively equipped with a clamping plate connecting rod 8, is installed with long spiro nail among the clamping plate connecting rod 8, leads to
Component clamping plate 7 is crossed to fix to clamp multi-layer stacked graphite disk 4；The twin socket terminal plate 10 and single head ground terminal blade
11 side is respectively mounted by engaging bolts 7a and fixed with two component clamping plates 7, twin socket terminal plate 10 and the single head ground connection
The opposite side of terminal plate 11 is cased with a terminal clamping ring 9 respectively, and terminal screw 10a, the end are equipped with the terminal clamping ring 9
Sub- screw 10a is used for the end of a thread that power line and ground wire are tightened during wiring.
As shown in figure 3, it is a kind of graphite gasket schematic diagram of the through-flow lightning protection for power supply of Large Copacity of the present embodiment；It is described
Graphite disk 4 every is about 3mm thickness, external diameter about 30mm graphite material, and the spacer ring 5 is external diameter than graphite disk
Slightly larger, internal diameter about 20mm ptfe sheet；Ten graphite disks 4 and nine insulation spacers 5 are spaced closed assembly, pass through isolation
Packing ring 5 forms nine gaps being not turned on mutually；When for power lightning protection, in the presence of thunder and lightning high pressure, these isolation
Gap can form the discharge channel to the earth by arc through；Because graphite material and polytetrafluoroethylmaterial material all have resistance to height
Warm, corrosion-resistant, oxidation resistant feature, therefore, the graphite external series gap of multilayer can bear repeatedly conducting electric discharge in lightning protection, and
When no thunder and lightning is invaded and harassed this lightning protection component insulate in itself, leakage current, power circuit will not be had any impact.
As shown in figure 4, it is a kind of electrical block diagram of the through-flow lightning protection for power supply of Large Copacity of the present embodiment；In figure
Circuit board 3 on pressure limiting circuit, working indicating, remote signalling indicating circuit and ten root long pin contact pins 6, the pressure limiting circuit are housed
Containing eight high-voltage capacitance 3a for being connected in parallel on graphite disk 4 and earth terminal, because when thunder and lightning acts on, lightning protection electric discharge needs multiple
Gap between graphite flake punctures conducting one by one, therefore it is just relatively slower with the time of pressure limiting response to discharge, by being attempted by
The high-voltage capacitance 3a between graphite flake and earth terminal is stated, the characteristic that can not be mutated using the voltage at electric capacity both ends, the height of input
Voltage after treating that graphite gaps turn on to the earth, further can just reduce residual voltage rapidly by multiple high-voltage capacitance 3a pressure limitings, and
And form the discharge channel to the earth；The working indicating contain light emitting diode 3c, voltage-stabiliser tube 3b, current-limiting resistance 3d and
Current Limiting Diodes 3e；In this circuit, the effect of the voltage-stabiliser tube 3b is that to protect light emitting diode 3c not receive high-tension
Impact, the current-limiting resistance 3d are used for the voltage for reducing supply light emitting diode 3c, and the Current Limiting Diodes 3e is used for will supply
Light emitting diode 3c AC rectification is into direct current, light emitting diode 3c greenings in lightning protection for power supply normal work
Light, do not lighted in lightning protection for power supply failure；The remote signalling indicating circuit contains dropout fuse 3f, switch wire drawing 3g and fine motion
3h is switched, when lightning protection for power supply is impacted by the lightning current of excess, multiple high-voltage capacitance 3a are possible to breakdown and short-circuit, this
When it is just quick trigger dropout fuse 3f to disconnect, outside power circuit will not thus be impacted；The dropout fuse
Also to hook to unclamp in switch wire drawing 3g thereon after disconnecting 3f, the dynamic microswitch 3h for making to be held shell fragment returns to original
Position, so that the contact in microswitch changes position, and then remote signalling terminal 12 is set to provide the normally opened (NC) and normally closed of contact
(NC) contact exchanges；By monitoring the change of this contact point signal, just the failure of lightning protection for power supply appearance can be remotely being perceived,
Submit administrative staff's on-call maintenance to and change lightning protection component, to ensure the normal operation of power lightning protection system.
The lightning protection for power supply that a kind of Large Copacity for introducing in the embodiment above is through-flow, only the one of lightning protection for power supply
Modular unit, such as lightning protection for power supply is applied when in single-phase source system, combined with two such a modular units,
The upside of two unit assemblys meets the L and N of power line respectively, and two power supply wiring holes of each module need to only connect therein one
Individual, the ground connection wiring hole on the downside of two unit assemblys is connected to outside the earth terminals P E again after being connected with bus-bar；If applied in
On three-phase power supply system, combined with four such a modular units, the upside of four unit assemblys connects power line respectively
L1, L2, L3 and N, two power supply wiring holes of each module equally only connect one of those, connecing on the downside of four unit assemblys
Ground wiring hole is connected to outside the earth terminals P E again after equally being connected with bus-bar；Each remote signalling terminal on lightning protection device assembly will
Link together and be followed by remote monitor device, a docking will be formed after each group contact parallel connection using normally opened (NO) contact
Point, a docking point is formed after each group contact is connected using normally closed (NC) contact；In addition, a kind of Large Copacity is through-flow
The modular unit of lightning protection for power supply can also be combined into differential mode, common mode and full mould lightning protection according to the various standards of distribution system
A variety of forms of protection, it can reach the purpose that Large Copacity, multi-functional, safe and reliable power lightning protection product are provided to client.
The explanation of the above-mentioned lightning protection for power supply embodiment through-flow to a kind of disclosed Large Copacity, makes this area professional technique
Personnel can realize or using the utility model.A variety of modifications to these embodiments are for those skilled in the art
It will be apparent, generic principles defined herein can not depart from the situation of spirit or scope of the present utility model
Under, realize in other embodiments.Therefore, the utility model is not intended to be limited to the embodiments shown herein, but
Meet the most wide scope consistent with principles disclosed herein and features of novelty.
Claims (10)
- A kind of 1. lightning protection for power supply that Large Copacity is through-flow, it is characterised in that：It includes lid and module base, the module in module Upper lid and module base are buckled into module entirety by frame, and the upper strata among module cavity is equipped with circuit board, and lower floor is equipped with Lightning protection component, the both sides of the lightning protection component are equipped with terminal assemblies, and the circuit board, lightning protection component and terminal assemblies are connected to one Rise；Equipped with pressure limiting circuit, working indicating, remote signalling indicating circuit on the circuit board；The working indicating is provided with Light emitting diode, voltage-stabiliser tube, current-limiting resistance and Current Limiting Diodes；The remote signalling indicating circuit contains dropout fuse, switch is drawn Silk and microswitch；The switch wire drawing hooks makes the shell fragment of microswitch be in the position pressed on dropout fuse；It is described Lightning protection component includes ten graphite disks, nine insulating washers, two component clamping plates and four clamping plate connecting rods, the graphite disk All sandwich a piece of insulating washer after closed assembly between any two, the graphite disk in two outsides is by component Boards wall, described group Corner on the inside of part clamping plate is respectively equipped with a clamping plate connecting rod, is installed with long spiro nail among the clamping plate connecting rod, is fixed by long spiro nail Component clamping plate, then multi-layer stacked graphite disk is clamped.
- 2. the lightning protection for power supply that a kind of Large Copacity according to claim 1 is through-flow, it is characterised in that：The two of the circuit board Side-lower is also respectively welded with five root long pin contact pins, and the long pin contact pin clamps by ten graphite disks of elasticity and lower section to be connected Connect.
- 3. the lightning protection for power supply that a kind of Large Copacity according to claim 2 is through-flow, it is characterised in that：The ten of the circuit board High-voltage capacitance is connected in parallel on the second to the 9th graphite flake by the second long pin contact pin to the 9th long pin contact pin of root long pin contact pin respectively, Pressure limiting circuit is formed to earth terminal；First long pin contact pin of ten root long pin contact pins of the circuit board by the first graphite disk and The component clamping plate connection of front side, the tenth long pin contact pin are connected by the tenth graphite disk with rear side component clamping plate, the front side group Part clamping plate, light emitting diode, voltage-stabiliser tube, current-limiting resistance, Current Limiting Diodes, dropout fuse and rear side component clamping plate are gone here and there successively Connection；The earth terminal of the pressure limiting circuit is connected between the series circuit of light emitting diode and dropout fuse；The switch is drawn One end of silk is hooked on dropout fuse, and the other end is hooked on the shell fragment of microswitch；Also parallel connection one on the light emitting diode Individual voltage-stabiliser tube.
- 4. the lightning protection for power supply that a kind of Large Copacity according to claim 2 is through-flow, it is characterised in that：The terminal assemblies by One twin socket terminal plate and a single head ground terminal blade and three terminal clamping ring compositions；The twin socket terminal plate With the side of single head ground terminal blade be respectively mounted by engaging bolts with two component Boards walls, the twin socket terminal plate and The opposite side of single head ground terminal blade is cased with a terminal clamping ring respectively, and terminal screw is equipped with the terminal clamping ring.
- 5. the lightning protection for power supply that a kind of Large Copacity according to claim 4 is through-flow, it is characterised in that：Before the module base Side is provided with two power supply wiring holes, and the double end terminal piece inside its holes is mutually conducted；One is provided with rear side of the module base It is grounded wiring hole.
- 6. the lightning protection for power supply that a kind of Large Copacity according to claim 1 is through-flow, it is characterised in that：After the module base The remote signalling delivery outlet of side passes through the microswitch on lead and circuit board built with remote signalling terminal, the pin that goes out of the remote signalling terminal Go out pin connection, one group of normally opened and one group of normally closed contact is provided in the remote signalling terminal.
- 7. the lightning protection for power supply that a kind of Large Copacity according to claim 1 or 3 is through-flow, it is characterised in that：In the module The top surface upper right corner of lid intermediate projections is provided with the indicator lamp hole of a built-in light emitting diode, and the light emitting diode is serially connected in mould In block internal work indicating circuit.
- 8. the lightning protection for power supply that a kind of Large Copacity according to claim 1 is through-flow, it is characterised in that：Before being covered in the module End is provided with two power supply screw holes, L lines or N lines for external power supply；Cover back-end is provided with an earthing screw in the module Hole, for external the earth PE lines.
- 9. the lightning protection for power supply that a kind of Large Copacity according to claim 8 is through-flow, it is characterised in that：The earthing screw hole Rear side be provided with a bus-bar slot, connect ground terminal when splicing for multiple modules.
- 10. the lightning protection for power supply that a kind of Large Copacity according to claim 1 is through-flow, it is characterised in that：The module base Bottom is provided with a guide rail neck；A guide rail dop is also equipped with below the rear side of the module base, the guide rail dop Outer end is provided with a draw ring, and the guide rail dop another side stretches into the side of guide rail neck below module base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720415263.8U CN206685699U (en) | 2017-04-19 | 2017-04-19 | The lightning protection for power supply that a kind of Large Copacity is through-flow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720415263.8U CN206685699U (en) | 2017-04-19 | 2017-04-19 | The lightning protection for power supply that a kind of Large Copacity is through-flow |
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| CN206685699U true CN206685699U (en) | 2017-11-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069435A (en) * | 2017-04-19 | 2017-08-18 | 苏州工业园区科佳自动化有限公司 | The lightning protection for power supply that a kind of Large Copacity is through-flow |
-
2017
- 2017-04-19 CN CN201720415263.8U patent/CN206685699U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069435A (en) * | 2017-04-19 | 2017-08-18 | 苏州工业园区科佳自动化有限公司 | The lightning protection for power supply that a kind of Large Copacity is through-flow |
| CN107069435B (en) * | 2017-04-19 | 2018-06-15 | 苏州工业园区科佳自动化有限公司 | The lightning protection for power supply that a kind of large capacity is through-flow |
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