CN1171246C - Lighting arrester and its producing method - Google Patents
Lighting arrester and its producing method Download PDFInfo
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- CN1171246C CN1171246C CNB001098101A CN00109810A CN1171246C CN 1171246 C CN1171246 C CN 1171246C CN B001098101 A CNB001098101 A CN B001098101A CN 00109810 A CN00109810 A CN 00109810A CN 1171246 C CN1171246 C CN 1171246C
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- lightning arrester
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
- H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
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Abstract
This invention provides a lighting arrester, which has reduced number of parts and improved manufacturability, achieves miniaturization and prevents explosion or scattering from excessive grounding current. An arrester comprises at least one of non-linear resistors (1) mainly consisting of a zinc oxide and terminal electrodes (2) disposed at both end portions of the non-linear resistor (1) to be electrically conductive so as to construct an internal element (3). The arrester is characterized by an insulative woven fabric (4) impregnated with an insulation resin which is hardened by being heated, arranging the integrated internal element (3) in a mold, injecting a polymer resin into the mold, and hardening the polymer resin in the mold so as to form an insulator (7).
Description
The present invention relates to lightning arrester and manufacture method thereof, in this lightning arrester, be provided with 1 or to be provided with a plurality of according to the mode of tandem stack be the nonlinear resistance body of principal component with zinc oxide, form internal part, respectively terminal electrode being made conduction with two ends of this internal part is connected, The present invention be more particularly directed to lightning arrester and manufacture method thereof, the blast the during energising of the abnormal current of this lightning arrester dangerous minimum, and realization densification.
Generally, in electric power system,, can produce the occasion of abnormal voltage (lightning impulse),, adopt lightning arrester for to electric power system or power equipment protection abnormal voltage because of factor such as thundering.This lightning arrester adopts and present insulation characterisitic under normal voltage, and when applying abnormal voltage, presents the nonlinear resistance body of low resistance characteristic.
In addition, lightning arrester is connected between electric power system and the earth, and in the occasion that abnormal voltage takes place, discharging current flows through lightning arrester, thus the restriction abnormal voltage.In addition,, then stop discharge, turn back to original state of insulation at once if voltage returns to normal state.
Above-mentioned lightning arrester passes through following manner, form the internal part in the lightning arrester, this mode is: a plurality of nonlinear resistance bodies are stacked together, this nonlinear resistance body is principal component with zinc oxide, terminal electrode is made conduction with two ends up and down of this resistive element be connected, radially, a plurality of insulating bars are set equably, radially produce skew so that prevent these nonlinear resistance bodies, the upper and lower end parts of this nonlinear resistance body is fastening by the insulation nut.
This internal part is received in the insulating vessel,, lid is covered in the top ends of internal part, apply axial pressure, thereby above-mentioned internal part is fixed in the center of insulating vessel by spring.
Above-mentioned insulating vessel comprises the employing pottery, and the type of fluoropolymer resin adopts the type of fluoropolymer resin to be called " polymer-type lightning arrester " especially.The fixing means of nonlinear resistance body is except the method for pushing by insulating bar in the manner described above, also have such as, disclosed as the flat 1-255437 communique of TOHKEMY, the method of fixing by insulating tape, and as the flat 10-55904 communique of TOHKEMY is disclosed, by the insulation net method of fixing.
But, in the polymer-type lightning arrester in the past, because when internal part being assembled by insulating bar, operating personnel must be by handwork simultaneously to each parts, for example a plurality of nonlinear resistance bodies assemble with two terminal electrodes up and down, in addition for they are formed one, must use insulating bar, parts such as nut.In addition,, internal part must be fixed,, this internal part be fixed, adopt spring and lid, when assembling, have destabilizing factor like this in order to apply axial pressure internal part being received in the polymer insulation period of the day from 11 p.m. to 1 a.m.
In addition, by band or the net occasion that nonlinear resistance body is fixing, can produce partial discharge on the contact-making surface of nonlinear resistance body, the fluoropolymer resin of periphery sustains damage, even may destroy.In addition, flow through the occasion of lightning arrester at the electric current that oversteps the extreme limit, because the gas that is produced dissipates from the side, be positioned at the fluoropolymer resin of side like this, band or net are damaged, and the fragment of the nonlinear resistance body of damage may disperse towards the lightning arrester outside.
Also have, because the performance of polymeric material can be degenerated because of environment for use, people also require to improve the weather resisteant of light, salt damage or the sand and dust of resisting temperature, ultraviolet ray etc. like this.
The present invention be directed to above-mentioned situation proposes, the object of the present invention is to provide a kind of lightning arrester and manufacture method thereof, this lightning arrester reduces number of components, manufacturing is improved, realize densification, even under the situation that flows through the earth current that oversteps the extreme limit, still can prevent to break out the situation of dispersing simultaneously.
In addition, another object of the present invention is to provide a kind of lightning arrester and manufacture method thereof, this lightning arrester suppresses the generation of partial discharge, keeps reliability for a long time, has good weather resisteant.
To achieve these goals, the lightning arrester that relates to, it is provided with 1 or be provided with a plurality of nonlinear resistance bodies according to the mode of tandem stack, this nonlinear resistance body is principal component with zinc oxide, conduction is made in terminal electrode and two end to be connected, form internal part, it is characterized in that above-mentioned internal part around be coated with following insulating properties and weave cotton cloth, make this internal part form one, infiltration had the insulative resin that hardens by heating during this insulating properties was weaved cotton cloth, form in the internal part of one at this, form insulator by mould cast fluoropolymer resin.
In described lightning arrester, be provided with 1 or stacked a plurality of be the nonlinear resistance body of principal component with zinc oxide, with it with terminal electrode, by the insulating properties formation one of weaving cotton cloth, adopt fluoropolymer resin, they are carried out Unitarily molded, form lightning arrester, need not to be used for fixing the parts of these parts like this, can make densification.
Even in the action because of overstepping the extreme limit, nonlinear resistance body produce to connect destroys, and along with the generation of electric arc, produces gas in addition, under the situation that internal pressure rises since around it for the insulating properties covering of weaving cotton cloth, disperse out with can preventing Explosion of on Arrester like this.In addition,, do not produce partial discharge like this, can suppress the degradation of the insulator of fluoropolymer resin formation because nonlinear resistance body is engaged.
Described lightning arrester is characterised in that above-mentioned described insulating properties weaves cotton cloth by formation that the single thread of insulating properties or twist yarn are weaved, and it is along circumferentially being the tubular that does not have breakpoint continuous.
Described lightning arrester is characterised in that the angle that constitutes single thread that described insulating properties weaves cotton cloth or two different directions in the twist yarn is in 30～160 ° scope.
In described lightning arrester, because the angle of single thread or twist yarn can obtain enough intensity like this in 30～160 ° scope.Best above-mentioned angle is 60 °, if less than 30 °, surpasses 160 °, and then fiber produces and slides, and can not obtain enough intensity.
Described lightning arrester is characterised in that the spacing that constitutes single thread that described insulating properties weaves cotton cloth or twist yarn is in the scope of 0.5～5mm.
In described lightning arrester, because the spacing of single thread or twist yarn can obtain good release of pressure characteristic, like this with enough intensity in the scope of 0.5～5mm.If above-mentioned spacing surpasses 5mm, then can not obtain enough intensity, if above-mentioned in addition spacing less than 0.5mm, then the gas that is produced can not dissipate, effect can't be improved.
Described lightning arrester is characterised in that above-mentioned described insulating properties weaves cotton cloth being provided with 1 or be provided with near the outer edge up and down of a plurality of nonlinear resistance bodies position according to the mode of tandem stack, is formed with the release of pressure peristome.
Described lightning arrester is characterised in that above-mentioned described insulating properties weaves cotton cloth being provided with 1 or be provided with near the outer edge up and down of a plurality of nonlinear resistance bodies position according to the mode of tandem stack, is provided with the release of pressure weak point.
In described lightning arrester, because the weave that all adopts the mesh of insulating properties in weaving cotton cloth to stop up, the insulating properties that is positioned at the upper and lower end parts of nonlinear resistance body is weaved cotton cloth and is provided with peristome, or as the release of pressure weak point, be provided with such as, the kink that insulating properties is weaved cotton cloth, the notch part that insulating properties is weaved cotton cloth, the part of the weave chap of fiber, insulative resin is less than the part of other part, like this in the occasion that produces electric arc owing to the action that oversteps the extreme limit, at nonlinear resistance body, insulating properties weave cotton cloth or the interface of insulator on short circuit current flow, peristome that this electric arc is weaved cotton cloth by insulating properties or weak point and with up and down terminal electrode conducting, meanwhile, the inner gas that produces dissipates along the vertical direction.Consequently,, still can make nonlinear resistance body be retained in the inside that insulating properties is weaved cotton cloth, can prevent volatile dispersing even under the situation that flows through excessive electric current.
Described lightning arrester is characterised in that above-mentioned described fluoropolymer resin comprises filler, and its weight content is in 0.5～40% scope.
In described lightning arrester, because fluoropolymer resin comprises filler, its content in the flexible while that keeps as fluoropolymer resin, can improve weather resisteant like this in 0.5～40% scope.Best above-mentioned content is in 20～38% scope, if this content is less than 0.5%, then be 24 hours the hydrophobic recovery time of the insulator of fluoropolymer resin formation, can't improve weather resisteant, if above-mentioned in addition content surpasses 40%, then the elasticity of the insulator of fluoropolymer resin formation suffers damage.
Described lightning arrester is characterised in that above-mentioned described filler is by SiO
2, TiO
2In at least a material form.
Described lightning arrester is characterised in that above-mentioned described fluoropolymer resin includes Pt, Fe, Ni, Ca, Mn, Na, K, Mg, and its content is in the scope of 1～50ppm.
In described lightning arrester, because above-mentioned fluoropolymer resin includes Pt, Fe, Ni, Ca, Mn, Na, K, Mg, its content can improve weather resisteant in the flexible while that keeps as fluoropolymer resin like this in the scope of 1～50ppm.Best above-mentioned content is in the scope of 5～30ppm, if this content is less than 1ppm, then be 20 hours the hydrophobic recovery time of the insulator of fluoropolymer resin formation, can't improve weather resisteant, if above-mentioned in addition content surpasses 50ppm, then the elasticity of the insulator of fluoropolymer resin formation suffers damage.
Described lightning arrester is characterised in that the glue hardness (go system hardness) of described fluoropolymer resin is in the scope of 30～60 Mohs' hardness.
In the described lightning arrester, because the glue hardness of fluoropolymer resin can improve anti-sand and dust characteristic like this in the scope of 30～60 Mohs' hardness.Here, less than 30 Mohs' hardness, then insulator is difficult to keep umbrella as pectin hardness, in addition as pectin hardness greater than 60 Mohs' hardness, then sustain damage easily.
Described lightning arrester is characterised in that the molecular weight of described fluoropolymer resin is the low-molecular-weight 2000～8000.
In described lightning arrester,, can obtain good short circuit characteristic and weather resisteant like this because the molecular weight of above-mentioned fluoropolymer resin is the low-molecular-weight 2000～8000.Here, less than 2000, the occasion greater than 8000 can not obtain good short circuit characteristic and weather resisteant at the molecular weight of above-mentioned fluoropolymer resin.
Described lightning arrester is characterised in that the anti-electric leakage of described fluoropolymer resin is in the scope of 3.5～5.5kV.
In the described lightning arrester, because the anti-electric leakage of above-mentioned fluoropolymer resin can obtain good short circuit characteristic and weather resisteant like this in the scope of 3.5～5.5kV.When resisting electric leakage property, confirmed in the weather resisteant test that the leakage current that insulator is turned up (ひ だ) portion surface increases the problem of generation time characteristic aspect here, less than 3.5kV.In addition,, then in the test of weather resisteant, confirmed, produced corona discharge if anti-electric leakage property surpasses 5.5kV.
Though the occurrence cause of this corona discharge is not clear and definite, can think, if improve anti-electric leakage property, savings electric charge easily on the surface of the folded up portion of insulator then, if it surpasses certain limit, then it is relevant with corona discharge.In addition, if produce corona discharge, because organic substance generation carbonization, its life performance reduces like this.
Described lightning arrester is characterised in that the ratio of mother liquor weight in the described fluoropolymer resin and curing agent weight is in 1: 0.9～1: 1.1 scope.
In described lightning arrester, because the ratio of mother liquor weight and curing agent weight is in 1: 0.9～1: 1.1 scope, mixing condition is good like this.Preferably aforementioned proportion is 1: 1, if exceed above-mentioned 1: 0.9～1: 1.1 scope, and the mixing condition that can't obtain to wish then.
Described lightning arrester is characterised in that according to weight percent meter the mother liquor content in above-mentioned relatively described fluoropolymer resin is 100%, and the content of curing agent is 100% situation, and the addition of colouring agent is in 0.05～2.0% scope.
In described lightning arrester, because according to weight percent meter, whenever relative mother liquor content is 100%, the content of curing agent is 100% situation, the addition of colouring agent is in 0.05～2.0% scope, can carry out insulator so painted, thereby avoid lightning arrester inside to be subjected to ultraviolet influence.Here, according to weight percent meter, if the content of above-mentioned colouring agent less than 0.05%, then can't obtain the effect of colouring agent, if this content surpasses 2.0%, its weather resisteant variation then.
The manufacture method that relates to following lightning arrester, it is characterized in that this method comprises the steps: to be provided with 1 or to be provided with a plurality of according to the mode of tandem stack be the nonlinear resistance body of principal component with zinc oxide, conduction is made in terminal electrode and two end be connected, form internal part; Cover following insulating properties and weave cotton cloth around this internal part, make this internal part form one, infiltration has the insulative resin that hardens by heating in this insulating properties is weaved cotton cloth; The internal part that will form one afterwards is positioned over mould inside, from injection molding machine, will be mixed with mother liquor, curing agent, and the fluoropolymer resin of colouring agent is injected into above-mentioned mould inside, makes it in this mould inside sclerosis, forms insulator.
Described method is characterised in that described injection molding machine is by from accommodating mother liquor respectively, curing agent, the respective material jar of colouring agent feeds respective material the tubulose mixer that is provided with a plurality of mixing screw blades with its inside, mix, afterwards composite material is injected in the mould.
Described method is characterised in that before by mould cast fluoropolymer resin, in advance the weave cotton cloth surface that forms the unitary whole part of the insulating properties that covers infiltration around described internal part the insulative resin that hardens by heating is arranged carried out primer and handled.
Described method is characterised in that the ratio of mother liquor weight in the fluoropolymer resin that is injected in the described mould and curing agent weight is in 1: 0.9～1: 1.1 scope.
Described method is characterised in that according to weight percent meter the mother liquor content in being poured into described fluoropolymer resin relatively is 100%, and the content of curing agent is 100% situation, and the addition of colouring agent is in 0.05～2.0% scope.
Fig. 1 is the cutaway view of an embodiment of expression lightning arrester of the present invention;
Fig. 2 (A) (B), (C) is the key diagram of manufacturing step of an embodiment of the manufacture method of expression lightning arrester of the present invention.
Fig. 3 is the cutaway view of the tubulose mixer of presentation graphs 2 (C).
Below with reference to the accompanying drawings, embodiments of the invention are described.
The 1st embodiment
Fig. 1 is the cutaway view of an embodiment of expression lightning arrester of the present invention.
As shown in Figure 1, a plurality of is that the nonlinear resistance body 1 of principal component passes through conductive adhesive mutually with zinc oxide, connect with electrically conducting manner, thus, a plurality of nonlinear resistance bodies 1 are stacked together, form laminated body, terminal electrode 2 is made conduction with two ends up and down of this laminated body be connected, thereby constitute internal part 3.
There is the insulating properties of the insulative resin that hardens by heating to weave cotton cloth by infiltration and 4 covers these internal parts 3, and this insulating properties is weaved cotton cloth two ends up and down of 4 to be held on the stage portion 5 that is formed on the terminal electrode 2 and the mode between the fixture 6 in fixing, make them form one, afterwards on the internal part 3 that forms one, by mould cast fluoropolymer resin, form insulator 7.
Above-mentioned nonlinear resistance body 1 is for having the zinc oxide sintered body of nonlinear resistance property, it is adapted to pass through electrically conducting manner with these sintered bodies connections, stacks together, and forms laminated body, or, conduction junction between zinc oxide is in order to increase bonding strength, between zinc oxide sintered body and zinc oxide sintered body, insertion has the metal electrode of conductivity, connect by the conduction formula, these sintered bodies are stacked together, form laminated body.In addition, though in the present embodiment, a plurality of nonlinear resistance bodies 1 connect by electrically conducting manner, stack together, and are not limited to this situation, also can be formed by 1 nonlinear resistance body.
In addition, the insulating properties that covers internal part 3 weaves cotton cloth 4 in following empire cloth, infiltration has the type of thermosetting resin, this empire cloth by such as, the warp thread of glass fibre, aramid fibre (ア ラ ミ ド Fiber Victoria), alumina fibre (ア Le ミ ナ Fiber Victoria), polyester fiber etc. and weft yarn form, and this thermosetting resin is the insulative resin of epoxy resin, phenolic resins, mylar etc.In addition, as weave cotton cloth 4 shape of insulating properties, be generally sheet, but in the lightning arrester of present embodiment, this cloth adopts following type, promptly the single thread or the twist yarn of insulating properties is weaved, its weave does not have breakpoint to keep continuously along circumferentially being, this cloth be shaped as tubular.Also have, constitute insulating properties weave cotton cloth 4 single thread or twist yarn, the angle of different both directions is in 30～160 ° scope, and its spacing is set in the scope of 0.5～5mm.
In addition, on the top of the stage portion 5 of terminal electrode 2, be processed with threaded portion 8, make such as, fixture 6 and this threaded portion 8 of pad or nut etc. screw togather, and be by this fixture 6, that weave cotton cloth two ends up and down of 4 of insulating properties are fastening.Also have, on stage portion 5, be formed with fillet part 9.
The fluoropolymer resin that forms insulator 7 adopts, such as being the silicones (シ リ コ Application Trees fat) of principal component with dimethyl polysiloxane (ジ メ チ Le Port リ シ ロ キ サ Application dimethyl polysiloxane), the filer content that it comprised is in 0.5～40% scope, and this filler is by SiO
2, TiO
2In at least a material form.In addition, above-mentioned silicones also can comprise Pt, Fe as catalyst, Ni, Ca, Mn, Na, K, Mg in the scope of 1～50ppm.In addition, the glue hardness of fluoropolymer resin is in the scope of 30～60ppm, and it is a molecular weight in 2000～8000 low-molecular-weight, and its anti-electric leakage property is set in the scope of 3.5～5.5kV.
Effect to the lightning arrester of present embodiment is described below.
At first, owing to the internal part in the lightning arrester 3 is weaved cotton cloth for insulating properties and 4 is covered and to form one, its assembling is very simple like this, operation easily, in addition, the 4 replacement insulating bars because the employing insulating properties is weaved cotton cloth, insulation nut and spring, internal part 3 is fixing, can reduce number of components like this, obtain stable internal part 3 on the structure, and the very little internal part 3 of easy acquired character fluctuation.
Promptly, with a plurality of be that the nonlinear resistance body 1 of principal component stacks together with zinc oxide, with it with terminal electrode 2, weave cotton cloth by insulating properties and 4 to form one, adopt fluoropolymer resin, they are poured into a mould together, form insulator 7 by mould, need not to be used for fixing the parts of these parts thus, be expected densification.
Even because the action that oversteps the extreme limit, nonlinear resistance body 1 produces to connect and destroys, along with the generation of electric arc, produce gas in addition, under the situation that internal pressure increases since around weave cotton cloth for insulating properties and 4 to cover, disperse out with can preventing Explosion of on Arrester like this.In addition,, partial discharge can be do not produced like this, the degradation of the insulator 7 that forms by fluoropolymer resin can be suppressed because nonlinear resistance body 1 is engaged.
In addition, since with nonlinear resistance body 1 in two terminal electrode 2 places that the end is connected up and down, be formed with stage portion 5, between this stage portion 5 and fixture 6, clamping has weave cotton cloth 4 end of the insulating properties that covers internal part 3, this end is fastening by fixture 6, can apply vertically pressure to internal part 3, even like this in the action that oversteps the extreme limit owing to rare generation, nonlinear resistance body 1 produces to connect and destroys, in addition along with the generation of electric arc, produce gas, under the situation that internal pressure increases, gas radially blows out from the weave cotton cloth fluoropolymer resin part of the mesh part 4 of insulating properties, only the partly breakage of insulator 7 that is formed by fluoropolymer resin can prevent that like this this insulator 7 from dispersing out in possible trouble explosively.
4 empire cloths of serving as reasons and forming such as, the warp thread of glass fibre etc. and weft yarn because insulating properties is weaved cotton cloth, infiltrating thereon has the thermosetting resin of the insulating properties of epoxy resin or mylar etc. to form, easy to manufacture like this, also is good aspect cost.In addition, because insulating properties is weaved cotton cloth and 4 is tubular, can just successively a plurality of nonlinear resistance bodies 1 and terminal electrode 2 be inserted wherein, assembling work is simple like this, can make the raising of making property.
Also have, weave cotton cloth two ends of 4 of the insulating properties of tubular are by being folded on the stage portion 5 that is formed on the terminal electrode 2, and are fixing by fixture 6 afterwards.That is, the top of the stage portion 5 in terminal electrode 2 is processed with threaded portion 8, and is by fixture 6, that weave cotton cloth 4 end of insulating properties is fastening.In addition, owing on stage portion 5, be formed with fillet part 9, the operation that the easy like this insulating properties of reeling was weaved cotton cloth 4 o'clock, engagement state also is good.
In addition, the occasion of weaving cotton cloth in the insulating properties of sheet too, after 2～3 circles of in internal part 3, reeling, sheet end during insulating properties weaved cotton cloth is fixed, thus, and nonlinear resistance body 1 and terminal electrode 2, weaving cotton cloth with insulating properties forms one, thereby can apply axial pressure.
Weave cotton cloth the angle of 4 single thread or the different both direction in the twist yarn in 30～160 ° scope owing to constitute insulating properties, can obtain enough intensity like this.Its angle is preferably 60 °, if above-mentioned angle less than 30 °, surpasses 160 °, fiber produces and slides, and can not obtain enough intensity.
Because the spacing between single thread or the twist yarn is in the scope of 0.5～5mm, the pressure release characteristics is good like this, can obtain enough intensity.If above-mentioned spacing surpasses 5mm, then can not obtain enough intensity, in addition, if above-mentioned spacing less than 0.5mm, then the gas that is produced can not disappear, thereby can not be improved effect.
Near 4 the positions outer edge up and down of the nonlinear resistance body 1 that is provided with according in series stacked a plurality of mode if insulating properties is weaved cotton cloth, as be provided with the peristome that release of pressure is used, weave cotton cloth 4 kink of insulating properties, weave cotton cloth 4 notch part of insulating properties, the part of the weave chap of fiber, relative other part, the words of the weak point that the release of pressure of the part that insulative resin is less etc. is used, then in the occasion that produces electric arc by overstepping the extreme limit, at nonlinear resistance body 1, insulating properties weaves cotton cloth 4, the short circuit current flow at the interface of insulator 7, above-mentioned electric arc is by insulating properties weave cotton cloth 4 peristome or weak point, with terminal electrode conducting up and down, meanwhile, the inner gas that is produced dissipates along the vertical direction.Consequently, even have under the situation that excessive electric current flows through, nonlinear resistance body 1 still can be retained in weave cotton cloth 4 inside of insulating properties, can prevent volatile dispersing.
Because the insulator 7 that is formed by fluoropolymer resin comprises 0.5～40% filler, then, can improve weather resisteant in the flexible while that keeps as polymer.Above-mentioned content is preferably in 20～38% the scope, if less than 0.5%, then be 24 hours the hydrophobic recovery time of the insulator 7 that is formed by fluoropolymer resin, weather resisteant does not improve like this, in addition, if above-mentioned content surpasses 40%, then the elasticity of the insulator that is formed by fluoropolymer resin is impaired.
Because as catalyst, its content in the flexible while of maintenance as fluoropolymer resin, can improve weather resisteant to the insulator that is formed by fluoropolymer resin like this in the scope of 1～50ppm with Pt, Fe, Ni, Ca, Mn, Na, K, Mg.Best above-mentioned content is in the scope of 5～30ppm, if less than 1ppm, then be 20 hours the hydrophobic recovery time of the insulator 7 that is formed by fluoropolymer resin, weather resisteant does not improve like this, in addition, if above-mentioned content surpasses 50ppm, then the elasticity of the insulator 7 that is formed by fluoropolymer resin is impaired.
In addition, because the glue hardness of fluoropolymer resin then can improve anti-sand and dust characteristic in 30～60 scope.Here, when glue hardness less than 30 the time, insulator is difficult to keep umbrella, surpasses 60 as pectin hardness in addition, then damage easily.In addition, because the molecular weight of fluoropolymer resin is the low-molecular-weight in 2000～8000 scopes, can obtain good short circuit characteristic and weather resisteant like this.If the molecular weight of fluoropolymer resin less than 2000, surpasses 8000, then can not obtain good short circuit characteristic and weather resisteant simultaneously here.
Because the anti-electric leakage of fluoropolymer resin can obtain good short circuit characteristic and weather resisteant like this in the scope of 3.5～5.5kV., when resisting electric leakage property, in the test of weather resisteant, confirm that the electric leakage on the folded up portion surface in the insulator 7 increases here, have the problem of life characteristic aspect less than 3.5kV.Also have,, then in the test of weather resisteant, confirm to produce corona discharge if anti-electric leakage property surpasses 5.5kV.
Because in the fluoropolymer resin, the ratio between mother liquor weight and the curing agent weight is in 1: 0.9～1: 1.1 scope, and mixing condition is good like this.Preferably this ratio is 1: 1, if exceed 1: 0.9～1: 1.1 scope, and the mixing condition that can't obtain to wish then.
Below according to Fig. 2 (A)～(C), the manufacture method of the lightning arrester of present embodiment is described.
At first, shown in Fig. 2 (A), pass through conductive adhesive, with a plurality of be that the nonlinear resistance body 1 of principal component is made conduction and connected with zinc oxide, they are stacked according to series system, by conductive adhesive, terminal electrode 2 is made conduction respectively with two ends up and down of above-mentioned laminated body be connected, form internal part 3.
Then, shown in Fig. 2 (B), the insulating properties that covering infiltration around internal part 3 has the insulative resin that hardens by heating weaves cotton cloth 4 and internal part 3 is formed one.
Afterwards, shown in Fig. 2 (C), mould 10 inside in the chamber that is formed with umbrella, the internal part 3 of above-mentioned formation one is set, adopts injection moulding forming machine 11, from its sprue gate 10a, to be mixed with mother liquor, curing agent, the fluoropolymer resin of colouring agent are injected into mould 10 inside, in these mould 10 inside, make above-mentioned hardening of resin, form insulator 7,, make this by such method
The lightning arrester of embodiment.
Here, injection moulding forming machine 11 is from accommodating mother liquor respectively, curing agent, the mother liquor tank 12 of colouring agent, curing agent jar 13, colouring agent jar 14 is supplied with tubulose mixer 16 by force lift 15, makes mother liquor, curing agent, colouring agent feeds in this tubulose mixer 16, and these compositions are mixed, and afterwards it is filled into mould 10 inside.As shown in Figure 3, in the inside of this tubulose mixer 16, be provided with a plurality of mixing screw blades 17.In addition, from outlet 10b,, attract to be poured into the remaining fluoropolymer resin of mould 10 inside by the aspirating mechanism of vacuum pump etc.
In addition, be preferably in by before the mould cast fluoropolymer resin, 4 coat weaving cotton cloth for insulating properties in advance, the primer processing is carried out on the surface that forms the unitary whole part.Thus, easily fluoropolymer resin is engaged with above-mentioned single piece.
In addition, the inside at mother liquor tank 12 accommodates fluoropolymer resin, the catalyst of Pt etc., and SiO
2, TiO
2Deng filler.Inside at curing agent jar 13 accommodates fluoropolymer resin, the curing agent of RSiX (R=methyl etc., X=methoxyl group etc.).
Also have, be poured in the fluoropolymer resin of mould 10 inside, ratio between mother liquor weight and the curing agent weight is in 1: 0.9～1: 1.1 scope, in addition, according to weight percent meter, whenever the content of above-mentioned relatively mother liquor is 100%, the content of curing agent is 100% occasion, the addition of colouring agent is in 0.05～2.0% scope, this colouring agent adopts with any colouring agent as principal component in dimethyl-silicon (ジ メ チ Le シ リ コ Application, dimethyl silicon), titanium, the carbon.
If in the manner described above, adopt the manufacture method of the lightning arrester of present embodiment, because terminal electrode 2 is made conduction with two ends of the nonlinear resistance body that stacks together to be connected, form internal part 3, covering infiltration around this internal part 3 has the insulating properties of the fluoropolymer resin that hardens by heating to weave cotton cloth 4, this internal part is formed one, the internal part 3 that will form one afterwards is arranged at mould inside, from injection moulding forming machine 11, to be mixed with mother liquor, curing agent, the fluoropolymer resin of colouring agent is poured into the inside of mould 10, sclerosis in this mould 10, thus can form insulator 7, so just, manufacturing efficient can be improved, high-quality lightning arrester can be made.
In addition, if adopt the manufacture method of the lightning arrester of present embodiment, according to weight percent meter, whenever the content of relative mother liquor is 100%, the content of curing agent is 100% occasion, the addition of colouring agent is in 0.05～2.0 scope, can carry out paintedly like this to insulator, avoids lightning arrester inside to be subjected to ultraviolet influence.Here, when according to weight percent meter, the addition of colouring agent then can't obtain the effect of colouring agent less than 0.05% o'clock, if according to weight percent meter, above-mentioned addition surpasses 2.0%, and the tendency of weather resisteant variation is then arranged.
Concrete example to present embodiment is described below.
The 1st example
Pass through low-melting-point metal, 3 nonlinear resistance bodies 1 and 2 terminal electrodes 2 are stacked together, the diameter of this nonlinear resistance body 1 is 30mm, highly be 30mm, with zinc oxide is principal component, is processed with threaded portion 8 on the above-mentioned terminal electrode 2, and this electrode 2 is the regulation shape, by heating, above-mentioned nonlinear resistance body 1 is connected with terminal electrode 2.Then, in advance glass fibre is formed the twist yarn that diameter is about 0.5mm, make weaving cotton cloth along the tubular that does not circumferentially have breakpoint.The formed angle of twist yarn is 60 °, and its spacing is 3mm.
On this is weaved cotton cloth, infiltration epoxy resin, length is cut off it according to the rules, inserts nonlinear resistance body 1.Insulating properties is weaved cotton cloth 4 ends restrict on terminal surface,, this end is fixed by nut as fixture 6.
Under 160 ℃ temperature,, make epoxy resin cure as fluoropolymer resin to the single piece of this nonlinear resistance body 1 heating 1 hour.Then, after carrying out the primer processing, above-mentioned single piece is arranged in the mould 10 in the chamber that is formed with umbrella, the mode that is 1: 1 according to the mother liquor and the ratio between the curing agent of fluoropolymer resin, supply with injection moulding forming machine 11, according to the mode of not sneaking into bubble, by having the tubulose mixer 16 of a plurality of mixing screw blades 17, mix, be poured in the mould 10 from sprue gate 10a.In addition, under 160 ℃ temperature, heated 2 hours, make the fluoropolymer resin sclerosis, thereby obtain lightning arrester.Here, from outlet 10b, with the remaining fluoropolymer resin sucking-off that is poured in the mould 10.
In addition, in this example, as fluoropolymer resin, adopting with the dimethyl polysiloxane is the silicones of principal component.
According to lightning arrester international standard [IEC60-99-4 (1999)],, carry out short circuit test to the lightning arrester of making in the manner described above.In this test, be applied for 1.1 times the voltage 5～10 minutes of lightning arrester action beginning voltage, connect short circuit current afterwards.In this test, even under the situation of the short circuit current that flows through 34kA, still do not have the volatile situation of dispersing, nonlinear resistance body 1 does not disperse out yet, and obtains good result.The lightning arrester of this example is the 5kA grade, and its standard is 5kA, but can confirm that this example can be adapted to above-mentioned above grade always.
In the lightning arrester of this example,, harden by insulative resin because nonlinear resistance body 1 is engaged, weaving cotton cloth with insulating properties 4 makes their form one, adopts fluoropolymer resin, by mould they is cast in together, can provide volume less like this, the lightning arrester of release of pressure characteristic good.
In the lightning arrester of this example, constituting the weave cotton cloth angle of 4 twist yarn of insulating properties is 60 °, but can confirm, even under the situation of this angle in 30 °～160 ° scope, equally still can obtain good result.If above-mentioned angle is less than 30 °, greater than 160 °, then fiber produces and slides, thereby can not obtain enough intensity.
Have, in the lightning arrester of this example, the spacing of twist yarn is 3mm again, even but under the situation in the scope of this spacing at 0.5～5mm, equally still can obtain good release of pressure characteristic.In addition, in this example, forming diameter is the twist yarn of 0.5mm, but is not limited to this situation, still can obtain same effect even can confirm under the situation of single thread.
In addition, because nonlinear resistance body 1 directly engages with terminal electrode 2, so in this example, do not produce partial discharge, the situation that the degradation of fluoropolymer resin is arranged unconfirmed can obtain good lightning arrester.
In addition, in this example, adopting with the dimethyl polysiloxane is the silicones of principal component, but can confirm, even for using other alkyl or phenyl instead, under other the situation of silicones that replaces methyl, still can form same lightning arrester, obtain same effect.
Also have, though main component in the silicones and the part by weight between the curing agent at 1: 1 o'clock, are the mixing condition of the best, can confirm, when relative this main component, the content of curing agent obtains same effect in 90～110% scope the time.
Have, can confirm, even at relative silicon materials, the addition of colouring agent still obtains same result less than under 2% the situation.
The 2nd example
In the 2nd example, identical with above-mentioned the 1st example, nonlinear resistance body 1 is engaged with terminal electrode 2, in advance according to the mode identical, make weaving cotton cloth of tubular by glass fibre with the 1st example.From appearance, the mesh between the twist yarn stops up.Infiltration has epoxy resin on this is weaved cotton cloth, and length is cut off it according to the rules, inserts nonlinear resistance body 1.Near the outer edge of end face in the nonlinear resistance body 1 that is connected and bottom surface, forming diameter is the peristome of 2mm.Then, according to the mode identical, obtain lightning arrester with the 1st example.
Identical with the 1st example, the lightning arrester that forms is in this manner carried out short circuit test, consequently,, still do not produce the fulminant situation of dispersing even be under the situation of 38kA at short circuit current, nonlinear resistance body 1 does not scatter yet, and obtains good result.
In this example, even under the situation of the weave that the mesh in the employing insulating properties is weaved cotton cloth stops up, because the upper and lower end parts place in the laminated body of nonlinear resistance body 1 is provided with peristome, like this at the occasion that produces electric arc because of overstepping the extreme limit, nonlinear resistance body 1, insulating properties weaves cotton cloth 4, or short circuit current flow on the interface of insulator 7, electric arc is by weave cotton cloth peristome in 4 of insulating properties, with terminal electrode 2 conductings up and down, meanwhile, the inner gas that produces dissipates along the vertical direction.Consequently, can think that even under the situation that flows through excessive electric current, nonlinear resistance body 1 still can be retained in weave cotton cloth 4 inside of insulating properties, can prevent volatile dispersing.
In addition, even passing through kink, notch part, the part of the weave chap of glass fibre, fluoropolymer resin is less than the part of other part relatively, replaces above-mentioned peristome, and forms under the situation of weak point, still can obtain same characteristic.
The 3rd example
In the 3rd example, identical with above-mentioned the 1st example, nonlinear resistance body 1 is engaged with terminal electrode 2, weaving cotton cloth 4 by insulating properties, their are formed after one, it is carried out primer handle, in silicones, add 40% SiO in advance as filler
2,, make lightning arrester according to the mode identical with the 1st example.
Identical with the 1st example, the lightning arrester that forms is in this manner carried out short circuit test, consequently,, still do not produce the fulminant situation of dispersing even be under the situation of 33kA at short circuit current, nonlinear resistance body 1 does not scatter yet, and obtains good result.In addition, in this example, obvious weather resisteant is improved.That is, in brine spray, applied working voltage 1000 hours, afterwards, distilled water is dropped onto on the polymer umbrella body as insulator 7, its contact angle is measured, relatively reach the recovery time of initial value, hydrophobicity is estimated.
In this example, be 2 hours recovery time, and this situation is similarly measured the 1st example so that relatively, be greater than 24 hours its recovery time, in this example, can confirm that weather resisteant is improved relatively.
In addition, can confirm, even at the TiO that adds 40%
2To replace SiO
2Situation under, still obtain same effect.In addition, if SiO
2Or TiO
2Content greater than 40% owing to be affected as the characteristic of the colloid of polymer, intensity reduces, effect like this is not improved.
In addition, in silicones, add the Pt of 50ppm in advance, make lightning arrester according to the same manner.Lightning arrester to making in the manner described above carries out short circuit test, and short circuit current 38kA obtains same good result.
Also have, in the weather resisteant test, be 2 hours recovery time equally, and this situation is good.In addition, in fluoropolymer resin, add Fe, Ni, Ca, Mn, Na, K, the Mg of 50ppm,, make lightning arrester, estimate, can confirm, in the weather resisteant test, all obtain same good result in short circuit test according to same way as to replace Pt.If addition surpasses 50ppm, because the characteristic of the colloid of polymer is affected, its intensity reduces, and effect like this is not improved.
The 4th example
In the 4th example, identical with above-mentioned the 1st example, nonlinear resistance body 1 is engaged with terminal electrode 2, weave cotton cloth by insulating properties 4 their are formed one after, carrying out primer and handle, in advance the degree of polymerization of silicones is adjusted, is that 3500 resin is as polymeric material with molecular weight.Then, according to the mode identical, make lightning arrester with the 1st example.
Identical with the 1st example, the lightning arrester to making in the manner described above carries out short circuit test, consequently, even be under the situation of 40kA at short circuit current, does not still produce the volatile situation of dispersing, and nonlinear resistance body does not scatter yet, and obtains good result.In addition, obvious in this example, weather resisteant is improved.That is, in this test, in brine spray, applying working voltage after 1000 hours, distilled water drops onto on the polymer umbrella as insulator 7, measures its contact angle, to comparing the recovery time that reaches initial value, estimates hydrophobicity.Can confirm that in this example, be half an hour recovery time, weather resisteant is further improved.In addition, the degree of polymerization of silicones changes to 8000 from 2000, and silicones is adjusted, and makes lightning arrester according to the same manner, and it is estimated, and can confirm, obtains good short circuit characteristic equally, weather resisteant.
The 5th example
In the 5th example, identical with the 1st example, pass through silicones cast step before, adjust the heating-up temperature and the heating time of silicon, the glue hardness of this silicon is made lightning arrester in 30～60 scope.
According to the mode identical with the 1st example, the lightning arrester to making in this manner carries out short circuit test, consequently, even be under the situation of 36kA, still do not produce the situation that explosion is dispersed at short circuit current, nonlinear resistance body does not disperse out yet, and obtains good result.In addition, in the weather resisteant test, be 1.5 hours recovery time equally, and this situation is good.In addition, in this example, obvious anti-sand and dust characteristic is improved.That is, by WA#240, carry out sandblast (blast) test, glue hardness is less than 60 Mohs' hardness, because its elasticity can surpass 60 Mohs' hardness as pectin hardness in the face of rejecting particle, then is subjected to the impact of particle, produces damage.In addition, less than 30 Mohs' hardness, then can not keep the umbrella shape shape as pectin hardness, be unaccommodated to lightning arrester like this.
The 6th example
In the 6th example, according to the identical mode of above-mentioned the 1st example, pass through to the step of watering before the depositing silicon resin, to adjusting the heating-up temperature and the heating time of silicon, the anti-leakage current characteristic that makes silicones is made lightning arrester greater than 3.5kV.
According to the mode identical with the 1st example, the lightning arrester to making in this manner carries out short circuit test, consequently, even be under the situation of 36kA, still can not produce volatile situation of dispersing at short circuit current, nonlinear resistance body does not disperse out yet, and obtains good result.In addition, in the weather resisteant test, be 1.5 hours recovery time equally, and this situation is good.
As mentioned above, lightning arrester of the present invention, covering infiltration around internal part has the insulating properties of the insulative resin that hardens by heating to weave cotton cloth, and makes it form one, form in the internal part of one at this, by mould cast fluoropolymer resin, form insulator, thus when assembling, number of components is reduced, thereby operation is easy, does not make the conveying after the assembling, the uncertain factor that the generation internal part comes off etc. during installation etc.In addition,, can prevent that still the volatile of lightning arrester from dispersing, can provide fail safe and weather resisteant good lightning arrester even under the situation of the action that oversteps the extreme limit.
In addition, the manufacture method of lightning arrester of the present invention, because terminal electrode is made conduction with the two ends of the nonlinear resistance body that stacks together to be connected, form internal part, covering infiltration around this internal part has the insulating properties of the insulative resin that hardens by heating to weave cotton cloth, make it form one, the internal part that will form one afterwards is arranged at mould inside, from injection molding machine, will be mixed with mother liquor, curing agent, the fluoropolymer resin of colouring agent is injected in the mould, makes it in this mould inside sclerosis, thereby forms insulator, make efficient like this and improve, can make high-quality lightning arrester.
Claims (19)
1. lightning arrester, it is provided with 1 or be provided with a plurality of nonlinear resistance bodies according to the mode of tandem stack, this nonlinear resistance body is principal component with zinc oxide, conduction is made in terminal electrode and two end to be connected, form internal part, the infiltration that is coated with on every side that it is characterized in that above-mentioned internal part has the insulating properties of the insulative resin that hardens by heating to weave cotton cloth, make this internal part form one, form in the internal part of one at this, by mould cast fluoropolymer resin, form insulator.
2. lightning arrester according to claim 1 is characterized in that above-mentioned insulating properties weaves cotton cloth by formation that the single thread of insulating properties or twist yarn are weaved, and it does not have breakpoint to keep continuous tubular along circumferentially being.
3. lightning arrester according to claim 2, the angle that it is characterized in that constituting single thread that insulating properties weaves cotton cloth or two different directions in the twist yarn is in 30～160 ° scope.
4. according to any one the described lightning arrester in the claim 1～3, the spacing that it is characterized in that constituting single thread that insulating properties weaves cotton cloth or twist yarn is in the scope of 0.5～5mm.
5. lightning arrester according to claim 1 is characterized in that above-mentioned insulating properties weaves cotton cloth being provided with 1 or be provided with near the outer edge up and down of a plurality of nonlinear resistance bodies position according to the mode of tandem stack, is formed with the release of pressure peristome.
6. lightning arrester according to claim 1 is characterized in that above-mentioned insulating properties weaves cotton cloth being provided with 1 or be provided with near the outer edge up and down of a plurality of nonlinear resistance bodies position according to the mode of tandem stack, is provided with the release of pressure weak point.
7. lightning arrester according to claim 1 is characterized in that above-mentioned fluoropolymer resin comprises filler, and its weight content is in 0.5～40% scope.
8. lightning arrester according to claim 7 is characterized in that above-mentioned filler is by SiO
2, TiO
2In at least a material form.
9. lightning arrester according to claim 1 is characterized in that above-mentioned fluoropolymer resin includes Pt, Fe, Ni, Ca, Mn, Na, K, Mg, and its content is in the scope of 1～50ppm.
10. lightning arrester according to claim 1, the glue hardness that it is characterized in that above-mentioned fluoropolymer resin is in the scope of 30～60 Mohs' hardness.
11. lightning arrester according to claim 1, the molecular weight that it is characterized in that above-mentioned fluoropolymer resin are the low-molecular-weight 2000～8000.
12. lightning arrester according to claim 1, the anti-electric leakage that it is characterized in that above-mentioned fluoropolymer resin is in the scope of 3.5～5.5kV.
13. lightning arrester according to claim 1, the ratio that it is characterized in that mother liquor weight in the above-mentioned fluoropolymer resin and curing agent weight is in 1: 0.9～1: 1.1 scope.
14. lightning arrester according to claim 1 is characterized in that according to weight percent meter, the mother liquor content in the above-mentioned relatively fluoropolymer resin is 100%, and the content of curing agent is 100% situation, and the addition of colouring agent is in 0.05～2.0% scope.
15. the manufacture method of a lightning arrester, it is characterized in that this method comprises the steps: to be provided with 1 or to be provided with a plurality of according to the mode of tandem stack be the nonlinear resistance body of principal component with zinc oxide, conduction is made in two ends of terminal electrode and this to be connected, form internal part, covering infiltration around this internal part has the insulating properties of the insulative resin that hardens by heating to weave cotton cloth, make this internal part form one, the internal part that will form one afterwards is positioned over mould inside, to mix mother liquor from injection molding machine, curing agent, the fluoropolymer resin of colouring agent is injected into above-mentioned mould inside, makes it in this mould inside sclerosis, forms insulator.
16. method according to claim 15, it is characterized in that above-mentioned injection molding machine is by from accommodating mother liquor respectively, curing agent, the respective material jar of colouring agent, respective material is fed the tubulose mixer that is provided with a plurality of mixing screw blades with its inside, mix, afterwards composite material is injected in the mould.
17. method according to claim 15, it is characterized in that before in advance the insulating properties that covers infiltration around internal part the insulative resin that hardens by heating is arranged being weaved cotton cloth forms the unitary whole part and carry out primer and handle by mould cast fluoropolymer resin.
18. method according to claim 15, the ratio that it is characterized in that being injected into mother liquor weight in the fluoropolymer resin in the mould and curing agent weight is in 1: 0.9～1: 1.1 scope.
19. method according to claim 15 is characterized in that according to weight percent meter, the mother liquor content in the above-mentioned relatively fluoropolymer resin is 100%, and the content of curing agent is 100% situation, and the addition of colouring agent is in 0.05～2.0% scope.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPP11-196344 | 1999-07-09 | ||
| JP11196344A JP2001023807A (en) | 1999-07-09 | 1999-07-09 | Lightning arrester and manufacture thereof |
| JPP11196344 | 1999-07-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1280372A CN1280372A (en) | 2001-01-17 |
| CN1171246C true CN1171246C (en) | 2004-10-13 |
Family
ID=16356285
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001098101A Expired - Fee Related CN1171246C (en) | 1999-07-09 | 2000-07-07 | Lighting arrester and its producing method |
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| Country | Link |
|---|---|
| EP (1) | EP1067565A3 (en) |
| JP (1) | JP2001023807A (en) |
| CN (1) | CN1171246C (en) |
| CA (1) | CA2313743A1 (en) |
| TW (1) | TW493184B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110998756A (en) * | 2017-08-16 | 2020-04-10 | 西门子股份公司 | Surge arrester and method for producing a surge arrester |
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| US7015786B2 (en) * | 2001-08-29 | 2006-03-21 | Mcgraw-Edison Company | Mechanical reinforcement to improve high current, short duration withstand of a monolithic disk or bonded disk stack |
| KR100464277B1 (en) * | 2002-06-26 | 2005-01-03 | 한국전기연구원 | Manufacturing method of arrester module |
| US7075406B2 (en) | 2004-03-16 | 2006-07-11 | Cooper Technologies Company | Station class surge arrester |
| DE602006007864D1 (en) * | 2006-12-22 | 2009-08-27 | Abb Technology Ltd | Surge arresters |
| JP5203255B2 (en) * | 2009-02-27 | 2013-06-05 | 音羽電機工業株式会社 | Varistor device and manufacturing method thereof |
| JP2013513233A (en) | 2009-12-04 | 2013-04-18 | エー ビー ビー リサーチ リミテッド | High voltage surge arrester |
| CN101916633B (en) * | 2010-07-08 | 2012-05-09 | 深圳市银星电气股份有限公司 | Method for improving twisting resistance of composite coating lightning arrester, lightning arrester and manufacturing method thereof |
| JP2012099615A (en) * | 2010-11-01 | 2012-05-24 | Mitsubishi Electric Corp | Arrester and manufacturing method thereof |
| JP5787621B2 (en) * | 2011-05-30 | 2015-09-30 | 株式会社東芝 | Lightning protection support insulator |
| CN102267211B (en) * | 2011-07-29 | 2014-10-01 | 镇江巨能电气有限公司 | Die for manufacturing full-closed lightning arrester |
| CN102324293B (en) * | 2011-07-29 | 2013-04-24 | 镇江巨能电气有限公司 | Manufacturing method of full-closed arrester |
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| CN114613563A (en) * | 2020-12-08 | 2022-06-10 | 西安西电避雷器有限责任公司 | Lightning arrester and processing method thereof |
| CN114400508B (en) * | 2021-12-16 | 2023-03-21 | 南阳金牛电气有限公司 | Gap arrester discharge rod and discharge ball integrated electrode and manufacturing process |
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| FR2619244B1 (en) * | 1987-08-06 | 1992-09-04 | Sediver Ste Europ Isolateurs V | PROCESS FOR MANUFACTURING A SURGE PROTECTOR AND SURGE PROTECTOR OBTAINED BY THIS PROCESS |
| AU603020B2 (en) * | 1988-12-06 | 1990-11-01 | Asea Brown Boveri Ab | Surge arrester |
| US5047891A (en) * | 1990-07-18 | 1991-09-10 | Idsi Products Of Georgia | Surge arrester core |
| SE469247B (en) * | 1991-10-04 | 1993-06-07 | Asea Brown Boveri | surge |
| AU1975997A (en) * | 1996-03-01 | 1997-09-16 | Cooper Industries, Inc. | Self-compressive surge arrester module and method of making same |
| FR2747500B1 (en) * | 1996-04-12 | 1998-06-26 | Soule Materiel Electr | PERFECTED SURGE PROTECTOR BASED ON VARISTORS |
| ES1036799Y (en) * | 1997-03-26 | 1998-04-01 | Ind De Aparellaje Electrico S | SURGE VOLTAGE UNLOADER. |
| CN1282287C (en) * | 1997-08-06 | 2006-10-25 | 乔丝林制造公司 | Surge arrester having disconnector by end cap |
-
1999
- 1999-07-09 JP JP11196344A patent/JP2001023807A/en active Pending
-
2000
- 2000-06-30 TW TW89113033A patent/TW493184B/en not_active IP Right Cessation
- 2000-07-07 CA CA 2313743 patent/CA2313743A1/en not_active Abandoned
- 2000-07-07 EP EP00114655A patent/EP1067565A3/en active Pending
- 2000-07-07 CN CNB001098101A patent/CN1171246C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110998756A (en) * | 2017-08-16 | 2020-04-10 | 西门子股份公司 | Surge arrester and method for producing a surge arrester |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1067565A3 (en) | 2002-05-08 |
| JP2001023807A (en) | 2001-01-26 |
| CN1280372A (en) | 2001-01-17 |
| EP1067565A2 (en) | 2001-01-10 |
| CA2313743A1 (en) | 2001-01-09 |
| TW493184B (en) | 2002-07-01 |
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