EP0942448B1 - Sectionneur à fusibles - Google Patents

Sectionneur à fusibles Download PDF

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Publication number
EP0942448B1
EP0942448B1 EP99103698A EP99103698A EP0942448B1 EP 0942448 B1 EP0942448 B1 EP 0942448B1 EP 99103698 A EP99103698 A EP 99103698A EP 99103698 A EP99103698 A EP 99103698A EP 0942448 B1 EP0942448 B1 EP 0942448B1
Authority
EP
European Patent Office
Prior art keywords
fuse
chambers
cover
walls
contacts
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.)
Expired - Lifetime
Application number
EP99103698A
Other languages
German (de)
English (en)
Other versions
EP0942448A3 (fr
EP0942448A2 (fr
Inventor
Gerhard Blaimer
Winfried Hunner
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 EP0942448A2 publication Critical patent/EP0942448A2/fr
Publication of EP0942448A3 publication Critical patent/EP0942448A3/fr
Application granted granted Critical
Publication of EP0942448B1 publication Critical patent/EP0942448B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/12—Adaptation for built-in fuse
    • H01H31/122—Fuses mounted on, or constituting the movable contact parts of, the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to a fuse disconnector with a lower part having fixed contact parts, with a cover for the lower part and a fuse holder with fuses for contacting the fixed contact parts.
  • a generic fuse breaker is known from DE-GM 92 08 693.4.
  • This fuse circuit breaker according to FIG 5 consists of a lower part 1 with the receiving contacts 2 for the blades 3 of low-voltage high-performance fuses 4.
  • the low-voltage high-performance fuses 4 are held in a fuse holder 5 via retaining lugs 6.
  • the fuse holder 5 is connected to the lower part 1 via a non-illustrated rotary joint.
  • the receiving contacts 2 are covered by a cover 7.
  • slots 8 are introduced for insertion of the blades 3.
  • the cover 7 is provided with an outwardly closed, slot-shaped arc guide 9, which has an outlet opening 10.
  • the fuse holder 5 When opening the fuse disconnector, the fuse holder 5 is separated from the lower part 1 by the contact blade 3 are pulled out of the receiving contacts 2 with rotation of the fuse holder 5. The resulting arc enters the slot-shaped arc guide 9. One part emerges from the outlet opening 10, another part is deflected into Lichtbogenumlenkwaitn.
  • This arc quenching device is used to switch off load currents.
  • the load currents are relatively low with peak values of approx. 1 kA.
  • the occurring arc is about 10 to 20 ms, ie relatively long.
  • the problem zone when switching off load currents is in front of the contact piece, which is why in this area to solve the problem Lichtbogenumlenkhuntn with the outlet opening 10 are provided.
  • the short-circuit currents which occur when switching on a short circuit are switched off by the fuses after reaching their peak values of approximately 100 kA after a relatively short duration (approximately 1 ms).
  • the high current gradient leads to an explosive propagation of metal vapors and ionized gases in all directions around the arc.
  • the problem zone is here in the area of the contact piece, i. below the problem zone relevant for switching off. Due to the metal vapors and ionized gases, a phase shift between juxtaposed contact pieces is possible without special precautions.
  • the housing has relatively large connection openings for the receiving contacts and if they are exposed, then it can not be ruled out that the metal vapors will come out of the receiving contact through the connection opening and if the fuse-switch disconnects on a grounded mounting plate, this will lead to a short circuit.
  • a fuse disconnector in strip form in which the individual receiving contacts of hood-like covers are each surrounded by five sides. With one of the receiving contacts connected, running at a small distance to the associated receiving contact pins, which are covered by the respective cover, are accessible via an opening of the cover. In this case, the openings can be closed substantially by contact tulips bridging the receiving contacts when they are plugged onto the free ends of the contact pins for bridging the receiving contacts.
  • the invention is based on the object, another fuse breaker of the above type ( DE 25 44 251 A ), by which also a harmful influence by occurring when switching on a short circuit metal vapors and ionized gases is avoided.
  • each of the terminals is disposed between each one of the walls of the chambers and one of the terminal outer opening of the cover so arranged that each of the walls of the chambers each have a partition forms one of the terminals for preventing the propagation of metal vapors and ionized gases to the associated outlet opening.
  • a particularly advantageous embodiment of the invention is when the chamber is open on the side facing the lower part, whereby a targeted pressure relief and a discharge of the ionized gases and metal vapors is made possible.
  • the fuse switch disconnector shown in FIG. 1 consists essentially of a lower part 11 with receiving contacts 12 for safety cutters 13 of low-voltage high-performance fuses 14, a cover 17 which can be snapped onto the lower part 11 and a fuse holder 15 which carries the low-voltage high-performance fuses 14 via retaining lugs 16.
  • the fuse holder 15 is connected to the lower part 11 via a not-shown known rotary joint.
  • the cover 17 covers the receiving contacts 12 and thus serves as protection against contact.
  • slots 18 are introduced for insertion of the safety blade 13 in a known manner.
  • the cover 17 is provided with chambers 19, in each of which one of the receiving contacts 12, that is, a fixed contact for each phase is added.
  • the fuse switch disconnector is shown in FIG. 1 in a position during the switch-on process, shortly after swiveling up Fuse holder 15 in which the fuse blade 13, the contacts 12 touch.
  • Arrows 20 indicate the propagation of metal vapors and ionized gases. These are held by a chamber 19 associated with the wall 21 and reflected.
  • the chamber 21 surrounds the receiving contact 12 on all sides by walls, wherein only one of the walls is interrupted by the slot 18 for contacting the safety blade 13 with the receiving contact 12. Downwards, ie towards the lower part 11, the chamber 19 is opened, in order to thereby provide a targeted pressure relief during the explosive propagation of the metal vapors and gases and to dissipate them therefrom.
  • the wall 21 of the chamber 19 is a foreclosure to the terminal 22 is out, which is accessible via a connection opening 23 on the housing outer wall.
  • a separate chamber 19 ie juxtaposed receiving contacts 12 of the three phases are also sealed off from each other by partitions, not shown here.
  • FIG 2 a fuse switch disconnectors according to the invention ßer type without a fuse holder and fuses shown.
  • the terminal 22 is formed here for connecting a cable lug, which is insertable through a wide connection opening 23 in the housing outer wall.
  • the metal vapors and ionized gases would be able to propagate unhindered to the connection opening 23 outwards and thereby considerably increase the risk of short circuits.
  • the same reference numerals as in FIG 1 are used here, since the embodiment is basically the same.
  • the cover 17 in a bottom view, i. from the viewpoint of the lower part 11.
  • the three individual chambers 19 are visible for each phase. These are each formed by the walls 21 and adjoining transverse walls 24, which surround the receiving contact 12 on all sides except for the receiving slot 18.
  • the transverse walls 24 also serve as partitions between adjacent receiving contacts 12. This encapsulation of the receiving contacts 12, a migration of the arc to adjacent receiving contacts and thus prevents short-circuiting.

Landscapes

  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (2)

  1. Sectionneur à fusibles comprenant une partie inférieure (11) avec des contacts de réception (12) pourvus de bornes de connexion (22), un capotage de recouvrement (17) de la partie inférieure (11), et un support de fusibles (15) avec des fusibles (14) pour contacter les contacts de réception (12), sectionneur dans lequel au capotage de recouvrement (17) sont intégrés des compartiments (19) destinés à recevoir les contacts de réception (12), dans lequel des parois de séparation (24) des compartiments (19) cloisonnent mutuellement des contacts de réception (12) voisins, dans lequel les compartiments (19) présentent sur le côté opposé à celui où se trouve le fusible (14) respectif, une paroi (21), et dans lequel des parois extérieures de boitier du capotage de recouvrement s'étendant parallèlement aux parois (21) des compartiments (19), sont pourvues chacune d'une ouverture de raccordement (23) pour l'accès à l'une des bornes de connexion (22) respective,
    caractérisé en ce que chacune des bornes de connexion (22) est agencée respectivement entre l'une des parois (21) des compartiments (19) et une paroi extérieure de boitier du capotage de recouvrement pourvue de l'ouverture de raccordement (23) de façon telle que chacune des parois (21) des compartiments (19) forme respectivement un cloisonnement par rapport à l'une des bornes de connexion (22) en vue d'éviter la propagation de vapeurs de métal et de gaz ionisés vers l'ouverture de sortie (23) associée.
  2. Sectionneur à fusibles selon la revendication 1, caractérisé en ce que les compartiments (19) sont ouverts du côté dirigé vers la partie inférieure (11).
EP99103698A 1998-03-10 1999-02-25 Sectionneur à fusibles Expired - Lifetime EP0942448B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29804247U 1998-03-10
DE29804247U DE29804247U1 (de) 1998-03-10 1998-03-10 Sicherungstrennschalter

Publications (3)

Publication Number Publication Date
EP0942448A2 EP0942448A2 (fr) 1999-09-15
EP0942448A3 EP0942448A3 (fr) 2000-01-05
EP0942448B1 true EP0942448B1 (fr) 2007-08-08

Family

ID=8053909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103698A Expired - Lifetime EP0942448B1 (fr) 1998-03-10 1999-02-25 Sectionneur à fusibles

Country Status (3)

Country Link
EP (1) EP0942448B1 (fr)
AT (1) ATE369613T1 (fr)
DE (2) DE29804247U1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2811812B1 (fr) * 2000-07-12 2003-06-27 Mecelec Ind Connecteur de raccordement et ensemble de raccordement electrique entre un jeu de barres et au moins un cable conducteur
EP1903589B1 (fr) * 2006-09-21 2014-10-01 Siemens Aktiengesellschaft Sectionneur à coupure en charge de sécurité doté d'une boîte d'extinction d'arc
CN100562960C (zh) * 2006-10-11 2009-11-25 上海华通电气有限公司 隔离开关熔断器组
DE102009033541A1 (de) * 2009-07-14 2011-01-20 Siemens Aktiengesellschaft Mehrpoliger elektrischer Schalter und Schaltkasten mit einem mehrpoligen elektrischen Schalter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1899474U (de) * 1964-05-22 1964-08-27 Leopold Neu Mehrteiliges sicherungsunterteil, insbesondere fuer sicherrungstrenner und sicherungslasttrenner.
DE6939831U (de) * 1969-10-14 1971-03-25 Siemens Ag Mehrphasiger lasttrennschalter.
DE2401030A1 (de) 1974-01-10 1975-07-17 Leopold Neu Halterung einer einteiligen beruehrungsschutzkappe an einem aufnahmekontakt
DE2544251B2 (de) * 1975-10-03 1980-07-03 Efen Elektrotechnische Fabrik Otto Frees Kg, 6229 Rauenthal Niederspannungs-Hochleistungs-Sicherungslasttrenner
DE7605708U1 (de) 1976-02-26 1976-09-09 Fa. Christian Geyer, 8500 Nuernberg NH-Sicherungsunterteil
DE3918816C2 (de) * 1989-06-09 1997-04-24 Efen Elektrotech Fab Abdeckung für NH-Sicherungsleisten oder -unterteile
DE9208693U1 (de) 1992-06-29 1993-10-28 Siemens AG, 80333 München Sicherungstrennschalter
DE9309654U1 (de) 1993-06-29 1993-09-02 Siemens AG, 80333 München Sicherungstrennschalter
DE9404155U1 (de) 1994-03-11 1994-04-28 Siemens AG, 80333 München Sicherungstrennschalter

Also Published As

Publication number Publication date
ATE369613T1 (de) 2007-08-15
EP0942448A3 (fr) 2000-01-05
EP0942448A2 (fr) 1999-09-15
DE29804247U1 (de) 1998-05-07
DE59914440D1 (de) 2007-09-20

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