FR2641423A1 - SURGE PROTECTION DEVICE FOR THE PROTECTION OF ELECTRICAL LINES - Google Patents
SURGE PROTECTION DEVICE FOR THE PROTECTION OF ELECTRICAL LINES Download PDFInfo
- Publication number
- FR2641423A1 FR2641423A1 FR8817618A FR8817618A FR2641423A1 FR 2641423 A1 FR2641423 A1 FR 2641423A1 FR 8817618 A FR8817618 A FR 8817618A FR 8817618 A FR8817618 A FR 8817618A FR 2641423 A1 FR2641423 A1 FR 2641423A1
- Authority
- FR
- France
- Prior art keywords
- tube
- stack
- varistors
- capsules
- protection
- 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.)
- Granted
Links
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 6
- 239000000057 synthetic resin Substances 0.000 claims abstract description 6
- 239000002775 capsule Substances 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000005340 laminated glass Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Emergency Protection Circuit Devices (AREA)
- Thermistors And Varistors (AREA)
- Non-Insulated Conductors (AREA)
- Insulated Conductors (AREA)
- Parts Printed On Printed Circuit Boards (AREA)
Abstract
Description
264 1 423264 1,423
La présente invention a trait aux dispositifs parafoudres destinés à La protection des lignes électriques, tout particulièrement des lignes The present invention relates to lightning arresters intended for the protection of power lines, especially lines
aériennes a moyenne tension.medium voltage aerials.
En fait, l'invention se réfère spécialement aux parafoudres dans Lesquels l'élément d'isolation disposé entre Les deux capsules termina- les de connexion est constitué par un empiLage de varistances à base d'oxyde de zinc (ZnO) maintenues sous pression axiale. On sait qu'en fonctionnement normaL, un tel empilage présente des caractéristiques In fact, the invention particularly refers to surge arresters in which the insulation element arranged between the two terminal connection capsules is constituted by a stack of varistors based on zinc oxide (ZnO) maintained under axial pressure. . We know that in normal operation, such a stack has characteristics
d'isolation qui s'opposent à tout passage de courant entre les deux caD- insulation which oppose any current flow between the two caD-
suIes de connexion, aLors que sous L'effet d'une brusque élévation de la tension nominale due à la chute de la foudre sur la Ligne protégée, il devient momentanément conducteur en assurant La mise à la terre de connection suIs, when under the effect of a sudden rise in the nominal voltage due to the lightning strike on the protected Line, it becomes momentarily conductive ensuring the earthing of
ladite Ligne.said Line.
Si les dispositifs de ce genre connus en pratique donnent satisfac- If devices of this kind known in practice give satisfactory
tion en général, il convient toutefois d'observer que Leur utilisation However, it should be noted that their use
dans des milieux extérieurs exposés à des pollutions marines ou indus- in outdoor environments exposed to marine or industrial pollution
trielles peut provoquer un vieillissement anormal des varistances. En outre, les constructions usuelles avec enveloooe en porcelaine résistent assez mal aux manipulations inhérentes à la pose des parafoudres sur Les lignes electrioues, manipulations qui impartissent à l'élément isolant disoosé entre les capsules de connexion des contraintes mécaniques assez sévères. trielles can cause abnormal aging of varistors. In addition, the usual constructions with porcelain enveloooe resist quite poorly the manipulations inherent in the installation of surge arresters on the electrioues lines, manipulations which impart to the insulating element disoosed between the capsules of connection of the rather severe mechanical stresses.
C'est à ces inconvénients qu'entend princioalement remédier la pré- It is for these drawbacks that the pre-
sente invention, laquelle a pour objet un dispositif parafoudre essen- invention, which relates to an essential lightning arrester device
tiellement remarquable en ce que l'élément d'isolation est monté à l'in- particularly remarkable in that the insulating element is mounted internally
térieur d'un tube en matière isolante sur leauel est directement moulée une couche de résine synthétique propre à former une enveloppe étanche inside a tube of insulating material on the water is directly molded a layer of synthetic resin capable of forming a tight envelope
de contention.of compression.
Conformément a un mode de mise en oeuvre préféré de l'invention, le tube rigide, avantageusement réalisé en stratifié de verre afin de présenter une tres grande rigidité jointe à une résistance mécanique tres elevee, est découoé d'au moins une lumière longitudinale de façon à ce Que lors du moulage, la résine synthétique pénètre à L'intérieur dudit tube et enrobe L'emoiLage de varistances qui constitue avec les In accordance with a preferred embodiment of the invention, the rigid tube, advantageously made of glass laminate in order to have a very high rigidity joined to a very high mechanical resistance, is cut off with at least one longitudinal light so that during molding, the synthetic resin penetrates inside said tube and coats the emoiLage of varistors which constitutes with the
capsules de connexion l'éLément d'isolation. En vue de renforcer L'étan- connection capsules the insulating element. To strengthen Etan-
chéeité de l'ensemble, les extrémités de L'enveLoope extérieure en résine moulée sont profilées pour présenter une Lèvre à profil circulaire qui est orientée axialement vers L'extérieur afin de venir s'engager dans un logement annulaire correspondant ménagé dans chacun de deux organes the whole, the ends of the outer molded resin envelope are profiled to present a lip with a circular profile which is oriented axially towards the outside in order to engage in a corresponding annular housing formed in each of two members
26 4 142326 4 1423
métaLLiques formant contacts pour le montage du dispositif parafoudre. metallics forming contacts for mounting the arrester device.
Le dessin annexé, donné à titre d'exemple, permettra de mieux comorendre L'invention, les caractéristiques qu'elle présente et les avantages qu'elLe est susceptible de procurer: Fig. 1 est une coupe axiale montrant, préalablement à L'opéra- tion de surmoulage destinée à La réaLisation de l'enveLoppe extérieure, Le noyau interne formé par L'empiLage de varistances, Les deux capsules The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing: FIG. 1 is an axial section showing, prior to the overmolding operation intended for the production of the external envelope, the internal core formed by the stacking of varistors, the two capsules
de connexion et Le tube rigide de protection. connection and The rigid protection tube.
Fig. 2 reproduit fig. 1 après réaLisation de l'enveloppe ex- Fig. 2 reproduced fig. 1 after making the envelope ex-
térieure.later.
Fig. 3 et 4 sont des coupes transversales suivant les plans Fig. 3 and 4 are cross sections along the planes
respectivement indiqués en III-III (fig. 1) et IV-IV (fig. 2). respectively indicated in III-III (fig. 1) and IV-IV (fig. 2).
Fig. 5 montre en coupe axiale l'extrémité supérieure du dispo- Fig. 5 shows in axial section the upper end of the arrangement
sitif parafoudre finalement réalisé. sitive lightning arrester finally realized.
Fig. 6 est une vue en élévation illustrant une variante de ré- Fig. 6 is an elevational view illustrating a variant of
alisation du tube riqcde.alization of the riqcde tube.
En fig. 1, la référence 1 désigne chacune des varistances à base In fig. 1, reference 1 designates each of the base varistors
d'oxyde de zinc dont l'empilage constitue l'éLément d'isolation du dis- zinc oxide, the stacking of which constitutes the insulation element of the
positif parafoudre à réaliser. Cet empilage prend appui contre une capsule de connexion 2 et reçoit l'action d'un ressort 3 associé à une autre caosule de connexion 4. L'ensemble 1-2-3-4 ainsi formé est logé à jeu réduit à l'intérieur d'un tube 5 en stratifié de verre, fermement rendu solidaire des deux capsules terminales 2 et 4 par le moyen de positive arrester to achieve. This stack is supported against a connection capsule 2 and receives the action of a spring 3 associated with another connection caosule 4. The assembly 1-2-3-4 thus formed is housed with reduced play inside. of a tube 5 made of glass laminate, firmly made integral with the two terminal capsules 2 and 4 by means of
gouoiLLes transversales 6.transverse dowel 6.
IL convient d'observer que le tube 5 est découoé de lumières longi- It should be noted that the tube 5 is stripped of long lights
tudinales 5a (cf. fig. 3), au nombre de trois dans l'exemple de réalisa- tudinal 5a (cf. fig. 3), three in number in the example of realization
tion envisagé. Chacune de ces lumières 5a s'arrête à courte distance des tion envisaged. Each of these lights 5a stops at a short distance from the
goupilles de fixation 6.fixing pins 6.
L'ensemble ou noyau représenté en fig. 1 est ensuite disposé à l'intérieur d'un moule d'injection, conformé de façon telle que la résine synthétique injectée forme une enveloppe 7 (fig. 2) qui enrobe ledit ensemble en déterminant des ailettes extérieures 7a en saillie. On The assembly or core shown in fig. 1 is then placed inside an injection mold, shaped so that the injected synthetic resin forms an envelope 7 (FIG. 2) which coats said assembly by determining projecting external fins 7a. We
notera que la résine injectée, avantageusement constituée par un éLas- note that the resin injected, advantageously constituted by an elas-
tomère à base de silicone, pénètre à l'intérieur du tube 5 à travers les lumières 5a de celui-ci, si bien qu'on obtient un remplissage total, sans aucune bulle d'air, de l'interstice annulaire compris entre les silicone-based tomer, penetrates inside the tube 5 through the apertures 5a thereof, so that a total filling, without any air bubble, is obtained of the annular gap between the
varistances 1 et le tube 5, à la manière illustrée en fig. 4. varistors 1 and the tube 5, as illustrated in fig. 4.
A chacune de ses extrémités, l'enveloppe 7 s'ouvre vers l'extérieur en définissant une Lèvre axiale 7b à profil circulaire. Chacune de ces At each of its ends, the envelope 7 opens outwards by defining an axial lip 7b with a circular profile. Each of these
264 1 423264 1,423
levres 7b est en fait destinée à venir s'engager à force à l'intérieur d'un logement annulaire 8a (fig. 5) prévu à cet effet dans un organe métallique propre à former contact extérieur de branchement, constitué lips 7b is in fact intended to come forcibly engage inside an annular housing 8a (fig. 5) provided for this purpose in a metallic member capable of forming an external connection contact, constituted
par une coupelle terminale 8 rapportée au niveau de chacune des extré- by a terminal cup 8 attached to each of the ends
mités de l'enveloppe 7, La fixation de ces coupelles étant opérée à mites of the envelope 7, The fixing of these cups being operated at
l'aide de goujons filetés 9 vissés dans des taraudages 4a, respective- using threaded studs 9 screwed into threads 4a, respectively-
ment 2a, des capsules 4 et 2.ment 2a, capsules 4 and 2.
On comprend qu'on obtient finalement un dispositif parfaitement étanche, dont l'élément d'isolation se trouve totalement à l'abri des We understand that we finally obtain a perfectly sealed device, the insulating element of which is completely protected from
pollutions extérieures. La résistance mécanique de l'ensemble est remar- external pollution. The mechanical resistance of the assembly is remarkable.
quable par suite de la présence du tube 5 en stratifié de verre. due to the presence of tube 5 in glass laminate.
On observera que les lumières 5a jouent un rôle efficace à l'encon- It will be observed that the lights 5a play an effective role against
tre des risques d'explosion du dispositif parafoudre. On sait effecti- risk of explosion of the arrester device. We know indeed
vement que lorsqu'à la suite de contraintes trop éLevées et de l'effet vement that when following too high constraints and the effect
de vieillissement ainsi réalisé, les varistances perdent leurs caracté- as a result of aging, the varistors lose their characteristics
ristiques normales, il y a formation d'un arc le long de l'empilage avec un fort dégagement de chaleur et de gaz, les gaz ainsi engendrés étant susceptibles de provoquer l'explosion brutale du corps des parafoudres normal aristics, there is an arc formation along the stack with a strong release of heat and gas, the gases thus generated being capable of causing the sudden explosion of the body of the surge arresters
classiques, avec des risques de blessures au personnel environnant. conventional, with risk of injury to surrounding personnel.
Dans le cas du dispositif suivant l'invention, l'apparition d'un arc le long de l'emoilage de varistances 1 provoque la carbonisation et/ou La fusion de la résine qui emplit les lumières 5a, si bien que sous l'effet de la pression des gaz engendrés, l'enveloppe 7 se déchire le long des génératrices correspondant aux lumières précitees. Une 255 telle éaecnirure permet l'échappement des gaz dans l'atmosphère, sans In the case of the device according to the invention, the appearance of an arc along the interlocking of varistors 1 causes carbonization and / or fusion of the resin which fills the openings 5a, so that under the effect of the pressure of the gases generated, the envelope 7 tears along the generators corresponding to the aforementioned lights. Such a 255 allows the escape of gases into the atmosphere, without
explosion brutale.brutal explosion.
Fig. 6 illustre une variante de mise en oeuvre de l'invention, suivant laquelle le tube rigide, ici référencé 15, est découpé d'une Fig. 6 illustrates an alternative embodiment of the invention, according to which the rigid tube, here referenced 15, is cut from a
lumière 15a à profil helicoidal qui remplace ainsi les lumières Longitu- light 15a with helical profile which thus replaces the Longitu-
dinales 5a et qui confèrent audit tube 15 une déformabilité élastique dans le sens axial telle qu'en lui conférant une longueur calculée pour que le montage des varistances 1 et des capsules 2 et 4 implique un effet de traction au niveau du tube 15, on peut se dispenser du ressort 3 destiné à opérer la compression initiale de l'empilage de varistances dinales 5a and which give said tube 15 an elastic deformability in the axial direction such that by giving it a length calculated so that the mounting of the varistors 1 and of the capsules 2 and 4 implies a pulling effect on the tube 15, it is possible to dispense with the spring 3 intended to operate the initial compression of the stack of varistors
1.1.
Il doit d'ailleurs être entendu que la description qui précède n'a It should also be understood that the above description has not
été donnée qu'à titre d'exemple et qu'elle ne limite nullement le domai- given as an example and does not limit the area
ne de l'invention dont on ne sortirait pas en remplaçant les détails ne of the invention which we would not leave by replacing the details
d'exécution décrits par tous autres équivalents. of execution described by all other equivalents.
264 1 423264 1,423
Claims (6)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8817618A FR2641423B1 (en) | 1988-12-30 | 1988-12-30 | SURGE PROTECTION DEVICE FOR THE PROTECTION OF ELECTRICAL LINES |
| AT9090420085T ATE105102T1 (en) | 1988-12-30 | 1990-02-20 | LIGHTNING PROTECTION DEVICE FOR ELECTRICAL CABLES. |
| ES90420085T ES2051491T3 (en) | 1988-12-30 | 1990-02-20 | LIGHTNING DEVICE FOR THE PROTECTION OF ELECTRICAL LINES. |
| DK90420085.4T DK0443286T3 (en) | 1988-12-30 | 1990-02-20 | Lightning conductor for electrical wiring |
| DE69008510T DE69008510T2 (en) | 1988-12-30 | 1990-02-20 | Lightning protection device for electrical lines. |
| EP90420085A EP0443286B1 (en) | 1988-12-30 | 1990-02-20 | Lightening arrester for the protection of electrical lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8817618A FR2641423B1 (en) | 1988-12-30 | 1988-12-30 | SURGE PROTECTION DEVICE FOR THE PROTECTION OF ELECTRICAL LINES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2641423A1 true FR2641423A1 (en) | 1990-07-06 |
| FR2641423B1 FR2641423B1 (en) | 1991-05-24 |
Family
ID=9373740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8817618A Expired - Lifetime FR2641423B1 (en) | 1988-12-30 | 1988-12-30 | SURGE PROTECTION DEVICE FOR THE PROTECTION OF ELECTRICAL LINES |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0443286B1 (en) |
| AT (1) | ATE105102T1 (en) |
| DE (1) | DE69008510T2 (en) |
| DK (1) | DK0443286T3 (en) |
| ES (1) | ES2051491T3 (en) |
| FR (1) | FR2641423B1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0443286A1 (en) * | 1988-12-30 | 1991-08-28 | FERRAZ Société Anonyme | Lightening arrester for the protection of electrical lines |
| EP0521805A1 (en) * | 1991-07-03 | 1993-01-07 | FERRAZ Société Anonyme | Defect indicator for arrester |
| FR2678765A1 (en) * | 1991-07-04 | 1993-01-08 | Ferraz | Method of manfacturing a lightning conductor and lightning conductor obtained by implementing this method |
| EP0545038A1 (en) * | 1991-12-04 | 1993-06-09 | Asea Brown Boveri Ag | Surge arrester |
| US5363266A (en) * | 1992-06-18 | 1994-11-08 | Raychem Corporation | Electrical surge arrester |
| EP0847062A1 (en) * | 1996-12-06 | 1998-06-10 | Asea Brown Boveri AG | Surge arrester |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2685533B1 (en) * | 1991-12-20 | 1994-04-01 | Soule | SURGE PROTECTOR COMPRISING AN IMPROVED CONTACT PART. |
| FR2685532B1 (en) * | 1991-12-20 | 1994-12-30 | Soule Sa | SURGE PROTECTOR WITH IMPROVED MECHANICAL PROPERTIES. |
| FR2747500B1 (en) * | 1996-04-12 | 1998-06-26 | Soule Materiel Electr | PERFECTED SURGE PROTECTOR BASED ON VARISTORS |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404614A (en) * | 1981-05-15 | 1983-09-13 | Electric Power Research Institute, Inc. | Surge arrester having a non-fragmenting outer housing |
| DE3426054A1 (en) * | 1984-06-01 | 1985-12-12 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Overvoltage suppressor |
| DE3544141A1 (en) * | 1984-12-14 | 1986-06-26 | Hubbell Inc Harvey | WINDED ELECTRICAL ARRANGEMENTS AND METHOD FOR PRODUCING SUCH |
| CH659909A5 (en) * | 1982-11-09 | 1987-02-27 | Bbc Brown Boveri & Cie | Method for producing an overvoltage suppressor |
| EP0233022A2 (en) * | 1986-01-29 | 1987-08-19 | Bowthorpe Industries Limited | Electrical surge arrester/diverter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2641423B1 (en) * | 1988-12-30 | 1991-05-24 | Ferraz | SURGE PROTECTION DEVICE FOR THE PROTECTION OF ELECTRICAL LINES |
-
1988
- 1988-12-30 FR FR8817618A patent/FR2641423B1/en not_active Expired - Lifetime
-
1990
- 1990-02-20 ES ES90420085T patent/ES2051491T3/en not_active Expired - Lifetime
- 1990-02-20 EP EP90420085A patent/EP0443286B1/en not_active Expired - Lifetime
- 1990-02-20 AT AT9090420085T patent/ATE105102T1/en not_active IP Right Cessation
- 1990-02-20 DE DE69008510T patent/DE69008510T2/en not_active Expired - Fee Related
- 1990-02-20 DK DK90420085.4T patent/DK0443286T3/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404614A (en) * | 1981-05-15 | 1983-09-13 | Electric Power Research Institute, Inc. | Surge arrester having a non-fragmenting outer housing |
| CH659909A5 (en) * | 1982-11-09 | 1987-02-27 | Bbc Brown Boveri & Cie | Method for producing an overvoltage suppressor |
| DE3426054A1 (en) * | 1984-06-01 | 1985-12-12 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Overvoltage suppressor |
| DE3544141A1 (en) * | 1984-12-14 | 1986-06-26 | Hubbell Inc Harvey | WINDED ELECTRICAL ARRANGEMENTS AND METHOD FOR PRODUCING SUCH |
| EP0233022A2 (en) * | 1986-01-29 | 1987-08-19 | Bowthorpe Industries Limited | Electrical surge arrester/diverter |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0443286A1 (en) * | 1988-12-30 | 1991-08-28 | FERRAZ Société Anonyme | Lightening arrester for the protection of electrical lines |
| EP0521805A1 (en) * | 1991-07-03 | 1993-01-07 | FERRAZ Société Anonyme | Defect indicator for arrester |
| FR2678764A1 (en) * | 1991-07-03 | 1993-01-08 | Ferraz | FAULT INDICATOR FOR A SPD. |
| FR2678765A1 (en) * | 1991-07-04 | 1993-01-08 | Ferraz | Method of manfacturing a lightning conductor and lightning conductor obtained by implementing this method |
| EP0545038A1 (en) * | 1991-12-04 | 1993-06-09 | Asea Brown Boveri Ag | Surge arrester |
| CH682858A5 (en) * | 1991-12-04 | 1993-11-30 | Asea Brown Boveri | Surge arresters. |
| US5291366A (en) * | 1991-12-04 | 1994-03-01 | Asea Brown Boveri Ltd. | Surge voltage arrester |
| AU655083B2 (en) * | 1991-12-04 | 1994-12-01 | Abb Schweiz Ag | Surge voltage arrester |
| US5363266A (en) * | 1992-06-18 | 1994-11-08 | Raychem Corporation | Electrical surge arrester |
| EP0847062A1 (en) * | 1996-12-06 | 1998-06-10 | Asea Brown Boveri AG | Surge arrester |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2051491T3 (en) | 1994-06-16 |
| DE69008510D1 (en) | 1994-06-01 |
| DE69008510T2 (en) | 1994-08-18 |
| ATE105102T1 (en) | 1994-05-15 |
| EP0443286A1 (en) | 1991-08-28 |
| DK0443286T3 (en) | 1994-05-30 |
| FR2641423B1 (en) | 1991-05-24 |
| EP0443286B1 (en) | 1994-04-27 |
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