EP3001878A1 - Procédé de coulée permettant de produire une gaine de protection autour d'un parafoudre et moule pour ledit procédé - Google Patents

Procédé de coulée permettant de produire une gaine de protection autour d'un parafoudre et moule pour ledit procédé

Info

Publication number
EP3001878A1
EP3001878A1 EP14739746.7A EP14739746A EP3001878A1 EP 3001878 A1 EP3001878 A1 EP 3001878A1 EP 14739746 A EP14739746 A EP 14739746A EP 3001878 A1 EP3001878 A1 EP 3001878A1
Authority
EP
European Patent Office
Prior art keywords
mold
casting
surge arrester
recesses
around
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14739746.7A
Other languages
German (de)
English (en)
Inventor
Bernd Kruska
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3001878A1 publication Critical patent/EP3001878A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/021—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles by casting in several steps
    • B29C39/025—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles by casting in several steps for making multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof

Definitions

  • the invention relates to a casting method for producing a protective coating around a surge arrester for high and medium voltage applications according to the preamble of patent claim 1, and a mold for performing the casting process.
  • Surge arresters which are intended to be used outdoors, are surrounded by a protective sheath, for example of silicone. Even when used in buildings, such a protective coating, for example for
  • This protective sheathing serves on the one hand to protect the surge arrester from the effects of the weather and, on the other hand, of electrical insulation. To provide a sufficient creepage path, the protective cover often has umbrellas.
  • surge arresters are those which are suitable for high voltages and medium voltages.
  • Such protective sheaths are often applied to the surge arrester in an injection molding process.
  • the shape of the protective casing is given by a mold, in particular an injection mold.
  • Known casting molds have two composite semi-molds as a die, wel ⁇ che forms the negative of the outer mold.
  • the two half-forms are put together.
  • the die and the core together form a mold, which corresponds to the negative mold of the protective coating to be cast.
  • the mold is ejected with a casting compound such as silicone under high pressure.
  • the pressure can range from a few megapascals (10 bar) to more than 100 megapascals (1000 bar).
  • the mold may be evacuated prior to injection of the molding compound. After curing or polymerization of the casting, the half-molds are taken apart.
  • Surge arrester is now firmly surrounded by the protective sheath and can be removed from the mold. The mold is then cleaned and is available for another casting process.
  • Surge arresters are often manufactured in the so-called cage design. It is one of a stack of
  • Varistor elements existing active part surrounded by a cage of tension elements, for example, glass fiber reinforced plastic, which are braced in end fittings and thus hold the active part together.
  • tension elements for example, glass fiber reinforced plastic
  • Such a surge absorber can reach a length of several meters. Due to the high pressure of the silicone during the casting process, the active part can be bent out of its axis or the tension elements can be moved against the active part or pressed apart. This may result in the surge arrester failing the prescribed electrical and mechanical tests and being considered scrap. A Na ⁇ charity is not possible in the rule.
  • WO 2012/062695 AI describes a stretchable sleeve, which is placed around the tension elements, and these fixed against each other.
  • the present invention has for its object to provide a casting process, the ER reliable encapsulation enables, without any active part or cage Werele ⁇ elements deform, and at no extra
  • the object of the casting method is achieved with the with ⁇ stuffs the invention according to claim. 1
  • a casting method for producing a protective sheathing around an overvoltage arrester.
  • the diverter usually consists of a stack of cylindrical varistor blocks.
  • the end fittings are located at the ends of the stack.
  • the stack must be compressed mechanically.
  • a cage surrounding the discharge element of holding rods which are clamped in the end fittings.
  • the support rods are made of an electrically insulating and mechanically tensile material such as glass fiber reinforced plastic.
  • the Hal ⁇ testäbe are firmly clamped with their ends in the end fittings, for example by screwing, wedging or crimping.
  • the first form usually consists of two half-forms, the are composable.
  • the surge arrester is placed in one of the half molds, and the first mold is closed with the second half mold.
  • the half molds are compressed hydraulically, pneumatically or mechanically. Seals and sealing surfaces ensure a good seal of the first shape, so that no casting compound can escape.
  • vents may be arranged in the first mold.
  • the first mold can be evacuated. Casting compound is then poured into the first mold during a first casting process or injected under high pressure.
  • a support member is integrally formed with the surge arrester, the cylindrically each fillet-shaped with its inside adapts to the diverter element and, with its Au ⁇ Hzseite around each of the support rods.
  • the casting compound is now cured, for example by heat.
  • the chains of the casting compound crosslink and form a solid but elastic body in which the support rods are fixed.
  • the support part thus forms an inner part of the protective cover.
  • the support member is thus a hollow cylinder radially enclosing the discharge element with an inner diameter which corresponds to the outer diameter of the discharge element and an outer diameter which corresponds to the center distance of two opposite holding rods.
  • the Students Kunststoffsabieiter with integrally formed support member is now taken out of the first mold and inserted as a core in a second mold.
  • the second form is how they will be ⁇ already used in the prior art a mold. It is a mat ⁇ rize for the outer shape of the protective coating.
  • An advantage of the casting method according to the invention is that are fixed by the support member, the support rods and the discharge during the second casting operation for the shield against deformation inward towards the discharge and toward the side of the adjacent holding rod out and therefore can not be bent or moved by the casting compound , This is avoided during the first casting process for the supporting part, since the first form has a he ⁇ considerably lower volume than the second shape and therefore less room for maneuver offers.
  • the casting material is not fully cured after the casting of the support ⁇ part, so that the casting compounds of the support member and screen part with ⁇ can cross-link during potting of the screen part and are so firmly connected.
  • the task relating to the casting mold is achieved by means of the invention according to claim 2. Accordingly has a mold as the first form of an inventive Gussverfah- ren first recesses for receiving the support rods of a defined ⁇ surge arrester, which is in each case
  • Hollow-shaped first recesses in this case comprise the holding rods on their outer side from the longitudinal axis of the
  • Surge absorber seen from, preferably less than half of its circumference.
  • the area between the support rods and the discharge element remains free. This area is filled with casting compound during the first casting process. This then encloses the support rods on their inside. After hardening of the casting compound, this nestles thereby
  • the support rods are fixed during the first casting process for the support member in the first recesses and can thus also during the first casting process not ver ⁇ be inserted.
  • the first form is composed of two half-forms.
  • the sectional area of the two half-forms extends along the longitudinal axis. In a direction perpendicular to the cut surface, the half-molds can be assembled and taken apart.
  • the first recesses extend in cross-section substantially in the opening direction, which facilitates the closing and opening of the first mold.
  • the first shape has second recesses for receiving the support rods, on which the support rods each rest along a surface line. While the support rods in the first recesses lie flat against a part of their lateral surface, they rest in the second recesses with only one surface line.
  • the generatrix lies outside of the support rods viewed from the longitudinal axis. The support rods are supported from the outside. The casting compound can then almost completely surround the holding rods in the region of the second recesses during the first casting process. Only the area of the generatrix of the support rods remains free of casting compound. The support member thus almost completely encloses the support rods in the region of the second recesses.
  • the second recesses surround the support rods egg ⁇ shaped.
  • the depth is dimensioned such that the support rods are fully received in its diameter and the width is dimensioned such that the cured cast therein ⁇ mass virtually completely surrounds the support rods.
  • the width approximately to twice diam ⁇ ser of the holding rods.
  • the support rods are thereby fixed against bending or deformation to the outside.
  • the first mold has a plurality of lugs on ⁇ that the diverter element radially against bending different bearing ⁇ zen. The lugs extend radially to the discharge element and support it at a plurality of points distributed around the circumference of the discharge element. This prevents bending of the diverting element against the longitudinal axis during the first encapsulation.
  • an advantageous embodiment of the invention provides that the lugs are each arranged between two second recesses.
  • the noses are thus formed by two be ⁇ adjacent legs of two adjacent U-shaped second recesses, which allows a simple design of ers ⁇ th form in the region of the second recesses.
  • the second recesses in a longitudinal direction are arranged in the center of the first mold and both sides in the longitudinal direction connect each first off ⁇ recesses thereon is preferred.
  • the first mold is divided into three longitudinal portions adjacent along the longitudinal axis Anei ⁇ Nander. In the middle longitudinal section, the first shape has the second recesses and the noses. In the longitudinal direction on both sides close to longitudinal sections, which have first recesses. The first shape is thus symmetrical.
  • the support rods are in their center, ie the area that tends most to bending, almost completely enclosed by the support member and fixed so.
  • the first mold can be composed of modules, wherein at least two modules comprise first from ⁇ recesses and at least one second module has recesses.
  • the first form is assembled longitudinally from several ⁇ ren modules. The modules are clamped or screwed against each other. In the middle of the mold, a module with second recesses is arranged, followed on both sides by modules with second recesses.
  • Figure 1 shows a known surge arrester in a
  • FIG. 3 shows a section through the first mold in the region of the first recesses
  • FIG. 4 shows a part of the first mold with first recesses in three-dimensional representation
  • Figure 6 shows a part of the first mold with second recesses in a three-dimensional representation
  • Figure 7 shows a surge arrester with molded
  • FIG. 8 shows a support part in a three-dimensional representation
  • FIG. 9 shows a section through an overvoltage arrester with a molded protective cover
  • Surge arrester 1 has a cylindrical discharge element 4, which consists of cylindrical Varistorblöcken, which are assembled into a column. At the ends of these surge arrester 1. Handrails 5 form a cage around the discharge element 4 and are clamped in the end fittings 3 and thus hold the discharge element 4 together. To protect against the weather is the
  • Surge Arrester 1 provided with a protective jacket 20.
  • the protective sheath 20 surrounds the discharge element 4 completely. Only parts of the end fittings 3 protrude out of the protective casing 20. To the creepage between the
  • the protective sheath 20 umbrellas 21, which are distributed at equal intervals over the length of the protective sheath 20.
  • the screens 21 have two different sizes, which are arranged alternately.
  • the protective casing 20 has the shape of a cylindrical body which surrounds the diverting element 4 and has end regions adjoining the end side, which terminate tightly with the end fittings 3.
  • the protective sheath 20 is often made of a polymer, such as silicone, which is applied directly to the surge arrester 1 in a casting process, often an injection molding process. One speaks then of direct encapsulation. In the previously known casting method, the protective casing 20 is completely produced in a casting process.
  • a support member 30 is first formed on the surge absorber 1 in a first molding process and then in egg ⁇ nem second casting process, a shielding member 31, support member 30 and screen member 31 together form the protective coating 20, which will be explained in more detail in the following figures.
  • FIG. 2 shows a surge arrester 1 inserted into a first mold 10.
  • the first mold 10 extends along the longitudinal axis 17 and encloses the discharge element. ment 4.
  • the first form 10 is together ⁇ amount is composed of two half-molds 12th
  • the surge arrester 1 is first inserted into one of the half-molds 12.
  • the first mold 10 is then closed with the second half mold 12.
  • the contact surfaces of the half-molds 12 are machined so that they close tightly at entspre ⁇ chendem pressure.
  • At the ends of the first mold 10, for example bring against the end fittings 3 to ⁇ seals, so that no casting material can escape.
  • the first mold 10 is composed of a plurality of modules 18, 19.
  • a centrally arranged module 19 has not shown second recesses 15.
  • modules 18 Adjacent thereto on both sides, three modules 18 are arranged with not shown first recesses 11.
  • the modules 18, 19 are assembled into a half-mold 12 and fixed, for example, by bracing or screwing.
  • the first mold By inserting an additional module 18 into each half mold 12, the first mold can be extended to accommodate a longer surge absorber 1. Accordingly, by removing modules 18, the first mold 10 can be shortened.
  • FIG 3 shows a section through a first form 10 with inserted surge arrester 1 and already molded-on support member 30 in the region of a module 18, which Figure 4 is a Mo ⁇ dul 18 in three-dimensional representation.
  • the first mold 10 could also be designed as a hollow circular cylinder instead of the first recesses 11 shown here.
  • the support rods 5 would then rest against the inner wall of the hollow cylinder.
  • a preferred embodiment is shown in which the first mold 10 in the region of the module 18 has grooved first recesses 11.
  • the first recesses 11 are designed as recesses which extend substantially in the opening direction 13. The first recesses 11 receive the support rods 5 and nestle against them.
  • the support rods 5 are thus fixed with the first mold 10 closed to the outside from the longitudinal axis and also hereus ⁇ Lich against deformation or bending supported by the first mold 10. If now casting material into the first mold 10 is ⁇ is injected, the support rods 5 are defined by the first mold 10 fixed. A bending or deformation of the support rods 5 is thereby avoided.
  • the casting compound injected into the first mold during the first casting operation forms the support part 30 after curing.
  • This support part 30 is a hollow-cylindrical body which fills the space between the discharge element 4 and the first mold 10. On its inside, the support member 30 nestles around the discharge element 4. On the outer ⁇ side of the support member 30, the casting material forms around the Haltestä ⁇ be holkhlförmige depressions nestling around the support rods 5. Will the first mold 10 in the opening direction
  • FIG. 5 shows a section through a first form 10 with inserted surge arrester 1 and already molded-on support member 30 in the region of a module 19, Figure 6 a Mo ⁇ dul 19 in three-dimensional representation.
  • the first mold 10 has second recesses 15 for receiving the support rods 5.
  • the second recesses 15 are U-shaped depressions that record in their depth the Haltestä ⁇ be 5 in its full diameter.
  • the support rods 5 rest therein with a surface line 23 and are supported by the first mold in the region of the module 19 with the second recesses 15.
  • the width of the second recesses 15 corresponds to about twice the diameter of a holding ⁇ rod 5.
  • the first mold 10 can be easily opened by pulling the two half-molds in the opening direction 13. Except in the area of the contact surface 24, the legs of the U-shaped depressions of respectively adjacent second recesses 15 form lugs 16, which extend as far as the discharge element 4 and support it during the first casting operation.
  • the diverter 4 is thereby fixed and can not be bent or deformed by injected molding compound.
  • the poured into the second recesses 15 casting compound encloses the support rods 5 almost completely. Only in the area of the surface line 23, the holding rods 5 protrude out of the casting mass forming the support part 30.
  • FIG. 7 shows a taken out from the first mold surge arrester 1 with a molded support member 30, the figure 8, a single support member 30.
  • longitudinal section 26 In a centrally arranged to the longitudinal ⁇ axle 17 longitudinal section 26 can be seen how the support member 30 in the area of the module 19 second recesses 15 is formed.
  • the cured casting compound encloses the support rods 5 here almost completely.
  • the support member has groove-like Ver ⁇ depressions 22 which receive the holding rods 5 and fixie ⁇ ren.
  • the support rods 5 are fixed so that they can not be bent against each other or against the diverter 4.
  • the surge arrester 1 with the integrally formed support part 30 is inserted into a second shape, which is not shown here.
  • the second form can be used a known per se form, which has been used to produce the protective sheath 20 in a single casting process. There was so far only the
  • Surge arrester 1 inserted as a core.
  • the surge arrester 1 with integrally formed support part 30 serves as the core.
  • FIG. 9 shows a section in the region of the length section 26.
  • the molded-on support part 30 can be seen around the discharge element 4, in the region radially outside of it the shield part 31 formed in the second casting process with a screen 21, in this case a screen 21 in FIG smaller of the two sizes and lying behind a screen 21 in the larger of the two sizes.
  • FIG. 10 shows a section in one of the longitudinal sections 25. Again, the support part 30 formed in this area and the screen part 31 molded radially outwards can be seen. Here, the screen part on a screen 21 in the larger of the two sizes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un procédé de coulée permettant de produire une gaine protectrice (20) autour d'un parafoudre (1), lequel comprend un élément de déviation cylindrique (4) disposé entre deux ferrures d'extrémité (3) et plusieurs barres de retenue (5) montées dans les ferrures d'extrémité (3) et entourant l'élément de déviation (4). Le procédé de coulée comprend les étapes consistant à : - insérer le parafoudre (1) dans un premier moule (10), - enrober le parafoudre (1) d'une masse de remplissage pour former une partie de support (30), laquelle, par sa face inférieure, épouse de manière cylindrique l'élément de dérivation (4), et laquelle, par sa face extérieure, épouse chacune des barres de retenue (5) respectivement en formant un congé, - faire durcir la masse de remplissage pour fixer les barres de retenue (5) les unes contre les autres et contre l'élément de déviation (4), - retirer du premier moule (10) le parafoudre (1) sur lequel est formée la partie de support (30) et l'insérer dans un second moule, - enrober le parafoudre (1) sur lequel est formée la partie de support (30) d'une masse de remplissage pour former une partie de protection (31), laquelle présente la forme extérieure de la gaine de protection (20), - faire durcir la masse de remplissage. L'invention concerne en outre un moule de coulée faisant office de premier moule (10) pour un procédé de coulée, lequel comprend des premiers évidements (11) permettant de loger les barres de retenue (5) d'un parafoudre (1) inséré et épousent respectivement les barres de retenue (5) en formant des congés. L'avantage du procédé de coulée selon l'invention et du moule de coulée réside dans le fait que les barres de retenue et l'élément de déviation sont fixés par une partie de support formée au cours d'une première procédure de coulée, raison pour laquelle au cours de la procédure de coulée suivante, ils ne peuvent plus être déformés ou décalés les uns par rapport aux autres.
EP14739746.7A 2013-07-12 2014-07-08 Procédé de coulée permettant de produire une gaine de protection autour d'un parafoudre et moule pour ledit procédé Withdrawn EP3001878A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013213688.9A DE102013213688A1 (de) 2013-07-12 2013-07-12 Gussverfahren zur Herstellung einer Schutzummantelung um einen Überspannungsableiter und eine Gießform hierfür
PCT/EP2014/064575 WO2015004121A1 (fr) 2013-07-12 2014-07-08 Procédé de coulée permettant de produire une gaine de protection autour d'un parafoudre et moule pour ledit procédé

Publications (1)

Publication Number Publication Date
EP3001878A1 true EP3001878A1 (fr) 2016-04-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14739746.7A Withdrawn EP3001878A1 (fr) 2013-07-12 2014-07-08 Procédé de coulée permettant de produire une gaine de protection autour d'un parafoudre et moule pour ledit procédé

Country Status (5)

Country Link
US (1) US20160144536A1 (fr)
EP (1) EP3001878A1 (fr)
CN (1) CN105378859A (fr)
DE (1) DE102013213688A1 (fr)
WO (1) WO2015004121A1 (fr)

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DE102014222451A1 (de) * 2014-09-30 2016-03-31 Siemens Aktiengesellschaft Gussverfahren zur Herstellung einer Schutzummantelung um ein Aktivteil eines Überspannungsableiters
DE102015214944A1 (de) * 2015-08-05 2017-02-09 Siemens Aktiengesellschaft Vorrichtung mit einem Vorrichtungsende, das mindestens einen Kontaktbereich zur Verbindung mit mindestens einem Gegenstück aufweist, sowie System mit der Vorrichtung und Verfahren zur Montage des Systems
DE102015214942A1 (de) * 2015-08-05 2017-02-09 Siemens Aktiengesellschaft Vorrichtung mit Ausnehmungen zur Aufnahme von Stabilisierungsstangen eines Überspannungsableiters, System mit der Vorrichtung, Überspannungsableiter und Verfahren zur Montage eines Überspannungsableiters
US10137788B2 (en) 2015-09-16 2018-11-27 General Electric Company Power electronic device and method
USD811333S1 (en) * 2016-01-12 2018-02-27 M & I Materials Limited Varistor unit
DE102017205107A1 (de) * 2017-03-27 2018-09-27 Siemens Aktiengesellschaft Vorrichtung zur Aufnahme von Stabilisierungsmitteln eines Überspannungsableiters, Anordnung und Herstellungsverfahren
CN110853850A (zh) * 2020-01-15 2020-02-28 四川永星电子有限公司 一种新型齿形圆柱型内孔外壳
US20220020513A1 (en) * 2020-07-14 2022-01-20 TE Connectivity Services Gmbh Surge Arresters and Related Assemblies and Methods

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US5712757A (en) * 1996-06-27 1998-01-27 Raychem Corporation Surge arrester having ridged terminals
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DE102007056111A1 (de) * 2006-12-21 2008-06-26 Tridelta Überspannungsableiter Gmbh Verfahren und Vorrichtung zur Herstellung eines Überspannungsableiters und nach diesem Verfahren hergestellter Überspannungsableiter
DE102007048986B4 (de) * 2007-10-12 2011-02-03 Tridelta Überspannungsableiter Gmbh Überspannungsableiter
DE102010043655B4 (de) 2010-11-09 2012-08-30 Siemens Aktiengesellschaft Überspannungsableiter mit dehnbarer Manschette
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Also Published As

Publication number Publication date
CN105378859A (zh) 2016-03-02
WO2015004121A1 (fr) 2015-01-15
DE102013213688A1 (de) 2015-01-15
US20160144536A1 (en) 2016-05-26

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