CN107424783B - A kind of clamp system of for transformer iron core - Google Patents
A kind of clamp system of for transformer iron core Download PDFInfo
- Publication number
- CN107424783B CN107424783B CN201710671526.6A CN201710671526A CN107424783B CN 107424783 B CN107424783 B CN 107424783B CN 201710671526 A CN201710671526 A CN 201710671526A CN 107424783 B CN107424783 B CN 107424783B
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- iron core
- coil
- transformer
- clamp system
- low
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a kind of clamp systems of for transformer iron core, including transformer case, the bottom centre position of transformer case, which installs cored iron core surface wrap, winding coil, the upper surface of iron core is equipped with clamp system, high tension terminal is installed on the left of the upper surface of transformer case, right side is equipped with low tension terminal, and tap switch is also inlaid on the shell between high tension terminal and low tension terminal；Clamp system includes fixed disc seat, fixed disc seat is fixedly mounted on above iron core on the shell wall of both sides, the center weld of fixed disc seat has indexing motor, indexing motor level is fixed, on machine shaft end-float coupling is socketed with by being socketed flange, end-float coupling extends laterally to iron core upper surface, and the end of end-float coupling is equipped with clamp jaw, and the claw front end of clamp jaw is welded with conductive sheet.The present invention can conveniently realize the adjusting of the input and output ratio to transformer, and the loss of control accuracy high-transmission is low.
Description
Technical field
The present invention relates to field of electrical equipment, specially a kind of clamp system of for transformer iron core.
Background technology
Transformer is the device for converting alternating voltage, electric current and impedance, when being connected with alternating current in primary coil, iron core
Exchange flux is just generated in (or magnetic core), makes to induce voltage (or electric current) in secondary coil.Transformer is by iron core (or magnetic core)
Formed with coil, coil there are two or more than two windings, wherein connect the winding of power supply primary coil, remaining winding
Secondary coil.In generator, either coil movement by magnetic field or Movement in Magnetic Field by fixed coil, can be in coil
Induced potential, this two kinds of situations, the value of magnetic flux is constant, but has variation with the magnetic flux quantity of coil intersecting chain, this is mutual inductance
The principle answered.Transformer is exactly a kind of utilization undesirable mutual electromagnetic inductance effect, voltage of transformation, the device of electric current and impedance.
In present electric system, transformer is the important equipment for realizing electrical power stabilization transmission, and wherein iron core is transformation
One of critical piece of device plays magnetic conduction and skeleton function in the structure of entire transformer.Fixing structure of iron core makes iron core interlayer
Closely, fill factor, the shape and size for ensureing iron core cross section, reduce oscillation crosswise when remagnetization, reduce transformer
No-load current, no-load loss and noise, and for coil and device is made to keep mechanically stable in transport and operation.
Want regulating winding the number of turns typically straight since the position between iron core and winding coil is relatively fixed adjustable transformer
It connects and moves up and down electric shock, not only control accuracy is poor, and since electric shock contact resistance is big, causes transmission loss very big.
Invention content
In order to overcome the shortcomings of that prior art, the present invention provide a kind of clamp system of for transformer iron core, energy
It enough conveniently realizes the input and output ratio to transformer to adjust, the loss of control accuracy high-transmission is low.
The technical solution adopted by the present invention to solve the technical problems is：A kind of clamp system of for transformer iron core,
Including transformer case, the transformer case is seal case structure, and the bottom centre position of transformer case is equipped with iron
Iron core described in core has winding coil, the upper surface of the iron core using multi-layer annular lamination superposition composition, iron core surface wrap
Clamp system is installed, high tension terminal is installed on the left of the upper surface of the transformer case, right side is equipped with low pressure wiring
Column is also inlaid with tap switch, the end of the tap switch on the shell between the high tension terminal and low tension terminal
Electric wire is connected to winding coil by clamp system；The clamp system includes fixed disc seat, and the fixed disc seat passes through
Fixed screw is fixedly mounted on above iron core on the shell wall of both sides, and the center weld of fixed disc seat has an indexing motor, described point
Degree motor level is fixed, and is socketed with end-float coupling by being socketed flange on machine shaft, the end-float coupling is laterally extended
Clamp jaw is installed to the end of iron core upper surface, and end-float coupling, the claw front end of the clamp jaw is welded with conductive sheet.
As a kind of technical solution having choosing of the present invention, the winding coil includes high-tension coil and low-voltage coil, described
High-tension coil is around the outer surface for being connected on low-voltage coil, and liner has insulated plastic offset plate between high-tension coil and low-voltage coil.
As a kind of technical solution having choosing of the present invention, the indexing motor includes index dial, the indexing panel surface carving
It is carved with angle mark, the center of index dial, which is dug, circular through hole, is worn in through-hole and is connected to indexing spindle.
As a kind of technical solution having choosing of the present invention, the indexing spindle is the cylindrical shaft being horizontally arranged, cylindrical shaft
Interlude outer surface is socketed with dividing worm wheel, and there are servo motor, the servo in the surface of the dividing worm wheel by gear coupling
Motor is mounted on fixed disc seat side.
As a kind of technical solution having choosing of the present invention, the interior bottom portion of the high tension terminal is welded with high-pressure conductive line
Circle, the bottom of low tension terminal are welded with low pressure conductive coil, and high-pressure conductive coil and low pressure conductive coil are respectively connected to point
Connect the both sides output end of switch.
As a kind of technical solution having choosing of the present invention, the clamp jaw includes clamping cylinder, the clamping cylinder (gas
Retarder is socketed on cylinder telescopic shaft, the front end of the retarder is socketed with rotating threaded shaft.
As a kind of technical solution having choosing of the present invention, the leading screw end of the rotating threaded shaft is plugged with spring clip, described
The clip width of dehiscing of spring clip is equal to the width of winding coil.
As a kind of technical solution having choosing of the present invention, the cross section of the conductive sheet is groove structure, the internal diameter of groove
Size is just consistent around linear dimension with winding coil, and the switch-mode regulation terminal of conductive sheet and tap switch passes through conducting wire phase
Connection.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention is socketed in low-voltage coil surface formation coil windings by the way that high-tension coil is arranged, and with insulated plastic
Offset plate has not only realized high frequency transformer winding coil, but also effectively reduce overall volume as separating, and eliminate around
Loss caused by influence is interfered with each other between group coil, improves transformer efficiency of transmission；
(2) present invention connects high tension terminal and low tension terminal by the way that tap switch is arranged, by with clamp system
Cooperation clamps winding coil using clamp jaw and utilizes conductive sheet connecting wire, reduces contact resistance, form galvanic circle,
Input and output coil turn ratio can easily be changed, transformer is realized and export adjustable purpose；
(3) present invention controls moving up and down for end-float coupling by the way that indexing motor is arranged, and utilizes dividing worm wheel and servo
Angle change is converted into distance change by the accurate coupling of motor using index dial, significantly high control accuracy, to improve
Adjusting is accurately controlled to transformer output turn ratio.
Description of the drawings
Fig. 1 is structure of the invention block diagram；
Fig. 2 is indexing motor structural schematic diagram；
Fig. 3 is clamp jaw structural schematic diagram.
In figure：1- transformer cases；2- iron cores；3- winding coils；4- clamp systems；5- high tension terminals；6- low pressure connects
Terminal；7- tap switches；8- fixed disc seats；9- indexing motors；10- end-float couplings；11- clamp jaws；12- conductive sheets.
301- high-tension coils；302- low-voltage coils；303- insulated plastic offset plates.
901- index dials；902- indexing spindles；903- dividing worm wheels；904- servo motors.
1101- clamping cylinders；1102- retarders；1103- rotating threaded shafts；1104- spring clips.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
The direction and position term that the present invention is previously mentioned, for example, "upper", " in ", "lower", "front", "rear", "left", "right", "inner", "
Outside ", " side " etc. is only direction and position with reference to annexed drawings.Therefore, the direction and position term used is to illustrate
And understand the present invention, rather than to limit the present invention.
Embodiment：
As shown in Figure 1, the present invention provides a kind of clamp system of for transformer iron core, including transformer case 1, institute
It is seal case structure to state transformer case 1, and the bottom centre position installation cored 2 of transformer case 1, the iron core 2 is adopted
It is superimposed and is formed with multi-layer annular lamination, it includes high-tension coil that 2 surface wrap of iron core, which has winding coil 3, the winding coil 3,
301 and low-voltage coil 302, the high-tension coil 301 is around the outer surface for being connected on low-voltage coil 302, and high-tension coil 301 and low pressure
Liner has insulated plastic offset plate 303 between coil 302, and wherein high-tension coil 301 is for connecting high voltage input terminal, low-voltage coil 302
For connecting low-voltage output, insulated plastic offset plate 303 separates high-tension coil 301 and low-voltage coil 302, between reduction coil
The influence to intercouple improves the efficiency of transmission of transformer to reduce output resistance；
The upper surface of the iron core 2 is equipped with clamp system 4, and height is equipped on the left of the upper surface of the transformer case 1
Terminal 5 is crimped, right side is equipped with low tension terminal 6, is also inlayed on the shell between the high tension terminal 5 and low tension terminal 6
Embedded with tap switch 7, the end electric wire of the tap switch 7 is connected to winding coil 3 by clamp system 4；The high-voltage connecting
The interior bottom portion of terminal 5 is welded with high-pressure conductive coil, and the bottom of low tension terminal 6 is welded with low pressure conductive coil, and high pressure is led
Electric coil is respectively connected to the both sides output end of tap switch 7 with low pressure conductive coil；High tension terminal 5 and low tension terminal 6
High-tension coil 301 and low-voltage coil 302 are connected to by tap switch 7 respectively, using tap switch 7, by tap switch 7 with
Different transformer winding taps connects to change the turn ratio of transformer high-low-voltage winding, and transformer output is adjusted to reach
The purpose of voltage；
The clamp system 4 includes fixed disc seat 8, and the fixed disc seat 8 is fixedly mounted on iron by fixed screw
On the shell wall of 2 top both sides of core, the center weld of fixed disc seat 8 has indexing motor 9, and the indexing motor 9 is horizontal fixed, electricity
It is socketed with end-float coupling 10 by being socketed flange in machine shaft, the end-float coupling 10 extends laterally to 2 upper surface of iron core,
And the end of end-float coupling 10 is equipped with clamp jaw 11, the claw front end of the clamp jaw 11 is welded with conductive sheet 12；It is described
Clamp system 4 passes through the company of change clamp system 4 and winding coil 3 for realizing the connection of tap switch 7 and winding coil 3
The turn ratio to high-low pressure coiling group can be thus achieved in contact；
It should be noted that the clamp system 4 is symmetrical mechanism, the clamp system in left side is used for and high-tension coil 301
Connection, for the clamp system on right side for being connect with low-voltage line 302, the fixed disc seat 8 is respectively used to the clamping at fixed both ends
Mechanism, the indexing motor 9 are to accurately control the driving source for realizing clamp system movement；
As shown in Fig. 2, the indexing motor 9 includes index dial 901, the angled mark of 901 surface engraving of the index dial,
The center of index dial 901, which is dug, circular through hole, is worn in through-hole and is connected to indexing spindle 902；The indexing spindle 902 is put for level
The interlude outer surface of the cylindrical shaft set, cylindrical shaft is socketed with dividing worm wheel 903, and the surface of the dividing worm wheel 903 passes through tooth
Wheel is coupled with servo motor 904, and the servo motor 904 is mounted on 8 side of fixed disc seat；The servo motor 904 passes through
External power supply is started to work, and the work rotation of servo motor 904 drives dividing worm wheel 903 to rotate, and the coupling of dividing worm wheel 903 drives
Indexing spindle 902 rotates, and when indexing spindle 902 rotates corresponding angle, corresponding distance is converted by index dial 901, into
And the realization of clamp jaw 11 is driven to move up and down by end-float coupling 10；
As shown in figure 3, the clamp jaw 11 includes clamping cylinder 1101, on the Telescopic-cylinder axis of the clamping cylinder 1101
It is socketed with retarder 1102, the front end of the retarder 1102 is socketed with rotating threaded shaft 1103；The clamping cylinder 1101 passes through
External power supply starts, and clamping cylinder 1101 is vented outward when working, and clamps telescopic shaft and is pushed out, and is turned by the adjustment of retarder 1102
Speed, for output motive force to rotating threaded shaft 1103, rotating threaded shaft 1103 rotates counterclockwise back-out, the leading screw of the rotating threaded shaft 1103
End is plugged with spring clip 1104, and the clip width of dehiscing of the spring clip 1104 is equal to the width of winding coil 3, by spring clip
1104 are pushed forward, and 1104 ontology of spring clip, which is adopted, to be made from an insulative material, and Forward fits closely clamping as winding coil；
Further illustrate, the cross section of the conductive sheet 12 is groove structure, the internal diameter size of groove just with around
The consistent around linear dimension of coil 3 is organized, and conductive sheet 12 is connected with the switch-mode regulation terminal of tap switch 7 by conducting wire, is led
Electric piece 12 is moved up and down with spring clip 1104 to different coil turns, is close to winding coil when spring clip 1104 clamps
3 single turn conducting wire forms galvanic circle, to export the voltage of different proportion value.
In conclusion the main characteristic of the invention lies in that：
(1) present invention is socketed in low-voltage coil surface formation coil windings by the way that high-tension coil is arranged, and with insulated plastic
Offset plate has not only realized high frequency transformer winding coil, but also effectively reduce overall volume as separating, and eliminate around
Loss caused by influence is interfered with each other between group coil, improves transformer efficiency of transmission；
(2) present invention connects high tension terminal and low tension terminal by the way that tap switch is arranged, by with clamp system
Cooperation clamps winding coil using clamp jaw and utilizes conductive sheet connecting wire, forms galvanic circle, can easily change
Input and output coil turn ratio realizes transformer and exports adjustable purpose；
(3) present invention controls moving up and down for end-float coupling by the way that indexing motor is arranged, and utilizes dividing worm wheel and servo
Angle change is converted into distance change by the accurate coupling of motor using index dial, significantly high control accuracy, to improve
Adjusting is accurately controlled to transformer output turn ratio.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (6)
1. a kind of clamp system of for transformer iron core, it is characterised in that：Including transformer case (1), outside the transformer
Shell (1) is seal case structure, and the bottom centre position of transformer case (1) installs cored (2), and the iron core (2) uses
Multi-layer annular lamination superposition composition, iron core (2) surface wrap have winding coil (3), the upper surface of the iron core (2) to be equipped with
The upper surface left side of clamp system (4), the transformer case (1) is equipped with high tension terminal (5), and right side is equipped with low pressure and connects
Terminal (6) is also inlaid with tap switch (7) on the shell between the high tension terminal (5) and low tension terminal (6), described
The end electric wire of tap switch (7) is connected to winding coil (3) by clamp system (4)；
The clamp system (4) includes fixed disc seat (8), and the fixed disc seat (8) is fixedly mounted on by fixed screw
Above iron core (2) on the shell wall of both sides, the center weld of fixed disc seat (8) has indexing motor (9), the indexing motor (9)
Level is fixed, and end-float coupling (10) is socketed with by being socketed flange on machine shaft, and the end-float coupling (10) is laterally prolonged
Iron core (2) upper surface is extended to, and the end of end-float coupling (10) is equipped with clamp jaw (11), the claw of the clamp jaw (11)
Front end is welded with conductive sheet (12)；
The indexing motor (9) includes index dial (901), the angled mark of index dial (901) surface engraving, index dial
(901) center, which is dug, circular through hole, is worn in through-hole and is connected to indexing spindle (902)；The indexing spindle (902) is put for level
The interlude outer surface of the cylindrical shaft set, cylindrical shaft is socketed with dividing worm wheel (903), and the surface of the dividing worm wheel (903) is logical
Crossing gear coupling has servo motor (904), the servo motor (904) to be mounted on fixed disc seat (8) side.
2. a kind of clamp system of for transformer iron core according to claim 1, it is characterised in that：The winding coil
(3) include high-tension coil (301) and low-voltage coil (302), the high-tension coil (301) is around being connected on the outer of low-voltage coil (302)
Surface, and liner has insulated plastic offset plate (303) between high-tension coil (301) and low-voltage coil (302).
3. a kind of clamp system of for transformer iron core according to claim 1, it is characterised in that：The high-voltage connection
The interior bottom portion of column (5) is welded with high-pressure conductive coil, and the bottom of low tension terminal (6) is welded with low pressure conductive coil, high pressure
Conductive coil is respectively connected to the both sides output end of tap switch (7) with low pressure conductive coil.
4. a kind of clamp system of for transformer iron core according to claim 1, it is characterised in that：The clamp jaw
(11) include clamping cylinder (1101), retarder (1102), institute are socketed on the Telescopic-cylinder axis of the clamping cylinder (1101)
The front end for stating retarder (1102) is socketed with rotating threaded shaft (1103).
5. a kind of clamp system of for transformer iron core according to claim 4, it is characterised in that：The rotating threaded shaft
(1103) leading screw end is plugged with spring clip (1104), and the clip width of dehiscing of the spring clip (1104) is equal to winding coil
(3) width.
6. a kind of clamp system of for transformer iron core according to claim 1, it is characterised in that：The conductive sheet
(12) cross section is groove structure, and the internal diameter size of groove is just consistent around linear dimension with winding coil (3), and conductive
Piece (12) is connected with the switch-mode regulation terminal of tap switch (7) by conducting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671526.6A CN107424783B (en) | 2017-08-08 | 2017-08-08 | A kind of clamp system of for transformer iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671526.6A CN107424783B (en) | 2017-08-08 | 2017-08-08 | A kind of clamp system of for transformer iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107424783A CN107424783A (en) | 2017-12-01 |
| CN107424783B true CN107424783B (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710671526.6A Active CN107424783B (en) | 2017-08-08 | 2017-08-08 | A kind of clamp system of for transformer iron core |
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| CN (1) | CN107424783B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637857B (en) * | 2018-11-05 | 2023-08-11 | 海鸿电气有限公司 | Efficient disk-type non-excitation tapping switch |
| CN110729114A (en) * | 2019-10-28 | 2020-01-24 | 江苏龙创电气有限公司 | Distribution transformer with iron core replacement function |
| CN112466662B (en) * | 2020-11-02 | 2022-07-12 | 丽水正阳电力建设有限公司 | Automatic production equipment for transformer winding of power system |
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| US3581189A (en) * | 1968-07-03 | 1971-05-25 | Maurice Sinet | On-load voltage regulators |
| JP2001169513A (en) * | 1999-06-29 | 2001-06-22 | General Electric Co <Ge> | Slip ring brush assembly and method |
| CN2580576Y (en) * | 2002-11-08 | 2003-10-15 | 金玮 | Rotary coil type contact voltage regulator |
| WO2012134977A1 (en) * | 2011-03-25 | 2012-10-04 | Abb Technology Ag | Tap changer having a vaccum interrupter assembly with an improved damper |
| CN104377018A (en) * | 2014-11-06 | 2015-02-25 | 华通机电股份有限公司 | Spiral contact voltage regulator |
| CN105845401A (en) * | 2016-05-13 | 2016-08-10 | 国网江苏省电力公司盐城供电公司 | High-voltage transformer with accurately-controlled transformation ratio |
| CN105957739A (en) * | 2016-07-13 | 2016-09-21 | 武汉泰普变压器开关有限公司 | Gear homing device for transformer tap-changer |
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2017
- 2017-08-08 CN CN201710671526.6A patent/CN107424783B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581189A (en) * | 1968-07-03 | 1971-05-25 | Maurice Sinet | On-load voltage regulators |
| JP2001169513A (en) * | 1999-06-29 | 2001-06-22 | General Electric Co <Ge> | Slip ring brush assembly and method |
| CN2580576Y (en) * | 2002-11-08 | 2003-10-15 | 金玮 | Rotary coil type contact voltage regulator |
| WO2012134977A1 (en) * | 2011-03-25 | 2012-10-04 | Abb Technology Ag | Tap changer having a vaccum interrupter assembly with an improved damper |
| CN104377018A (en) * | 2014-11-06 | 2015-02-25 | 华通机电股份有限公司 | Spiral contact voltage regulator |
| CN105845401A (en) * | 2016-05-13 | 2016-08-10 | 国网江苏省电力公司盐城供电公司 | High-voltage transformer with accurately-controlled transformation ratio |
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| Publication number | Publication date |
|---|---|
| CN107424783A (en) | 2017-12-01 |
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Effective date of registration: 20191209 Address after: 221300, Jiangsu City, Xuzhou province Pizhou Town Industrial Park Patentee after: Xuzhou national power power equipment Co., Ltd. Address before: 241000 Changjiang Road Anhui city Wuhu province Jiujiang district and South Industrial Park Patentee before: WUHU KAIXIN LIGHTNING ARRESTER CO., LTD. |