EP1953788A1 - Vorrichtung zum Schutz gegen Überspannungen mit beweglicher Elektrode und Entriegelungssystem der Verbindungsunterbrechungsvorrichtung - Google Patents
Vorrichtung zum Schutz gegen Überspannungen mit beweglicher Elektrode und Entriegelungssystem der Verbindungsunterbrechungsvorrichtung Download PDFInfo
- Publication number
- EP1953788A1 EP1953788A1 EP08354007A EP08354007A EP1953788A1 EP 1953788 A1 EP1953788 A1 EP 1953788A1 EP 08354007 A EP08354007 A EP 08354007A EP 08354007 A EP08354007 A EP 08354007A EP 1953788 A1 EP1953788 A1 EP 1953788A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection
- electrode
- energy
- electrical contacts
- connection pad
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 230000001012 protector Effects 0.000 claims description 26
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000010891 electric arc Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000013021 overheating Methods 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 230000004927 fusion Effects 0.000 abstract description 4
- 239000000155 melt Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 101100536354 Drosophila melanogaster tant gene Proteins 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
-
- 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
- H01H9/14—Adaptation for built-in safety spark gaps
-
- 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
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
- H01H9/465—Shunt circuit closed by transferring the arc onto an auxiliary electrode
Definitions
- the invention relates to an overvoltage protection device comprising an overvoltage limiter with non-linear elements variable with the voltage and a disconnection device with electrical contacts electrically arranged in series with the surge protector.
- the disconnecting device comprises a mechanism for actuating opening of the electrical contacts.
- the protection device comprises a first and a second connection pad.
- Overvoltage protection devices include an overvoltage limiter with non-linear elements variable with the voltage and a contact disconnection device actuated by an actuating mechanism.
- the surge protector and the disconnect device are connected in series.
- the contact disconnection device can adopt a triggering position and a latching position respectively corresponding to the open state and the closed state of the contacts.
- a tripping circuit cooperates with the actuating mechanism to cause the displacement of the contacts of the disconnection device to the open state especially in the event of destruction of the surge protector, especially at the end of life of said non-linear elements.
- the surge limiter including a varistor is connected to a thermal fuse to cause the opening of the circuit when the varistor heats up due to a malfunction.
- a heating up of the varistor can be generated by a leakage current following one or more lightning strikes.
- the fusion of the thermal fuse is generally accompanied by the displacement of the contacts of the disconnection device to an open state.
- the synchronization of the fusion of the thermal fuse with the opening of the contacts by the actuating mechanism is performed by a control kinematic chain comprising several mechanical means such as transmission shafts or billets.
- the use of this kinematic control system has the disadvantage of complicating the implementation of the protection device.
- the invention therefore aims to overcome the disadvantages of the state of the art, so as to provide a device for protection against overvoltages of simplified construction.
- the overvoltage protection device comprises an overvoltage limiter electrically connected to one of the connection pads by at least one fusible link, drive means exerting a displacement force displacing the surge protector in case of melting said at least one fuse link, moving said limiter acting directly on the actuating mechanism and causing the permanent opening of the contacts.
- the surge protector is electrically connected to the second connection pad by a first fusible link fused in case of overheating of said limiter.
- the first fuse link is a low temperature weld.
- the disconnection device comprises a first connection electrode in electrical connection with the first connection pad, a second connection electrode in electrical connection with the second pad and a third pad electrode.
- mobile arc switch electrically connected to the second connection pad.
- the actuating mechanism moves the third moving arc switching electrode to cause permanent opening of the electrical contacts when the protective device is traversed by electric currents having an energy greater than a triggering energy threshold.
- the surge protector is serially connected between the third movable arcing switch electrode and the second connection pad, the surge protector and the said second fusible link being simultaneously disconnected when an electric arc is switched between the first electrode connection and the second connection electrode.
- the surge protector is electrically connected to the second connection pad by a second fusible link undergoing fusion when traversed by alternating or short-circuit electrical currents having an energy lower than a triggering energy threshold.
- said triggering energy threshold corresponding to the threshold above which electrical currents of lightning waves of the 10/350 or 8/20 type cause permanent opening of the electrical contacts (4, 6).
- the third movable arc switching electrode is connected to the first connection electrode by an insulating piece forming a spark gap when the electrical contacts are closed.
- the third movable arc switching electrode is in contact with the first connection electrode when the electrical contacts are closed.
- the surge protector comprises a varistor.
- the surge protector comprises a varistor connected in series with a spark gap.
- the drive means comprise a spring.
- a high-energy disconnector is connected in series between the first connection electrode and the first connecting range, said high-energy disconnector being calibrated to disconnect when it is crossed by electric currents having an energy greater than the triggering energy threshold.
- the high-energy disconnector comprises means for acting on the actuating mechanism to cause the permanent opening of the electrical contacts.
- the high-energy disconnector comprises electromagnetic triggering means.
- the high energy disconnector comprises a fuse element.
- the overvoltage protection device 1 comprises an overvoltage limiter 2 with non-linear elements variable with the voltage and a disconnection device 3 with electrical contacts 4, 6.
- the surge protector 2 and the disconnection device 3 are electrically series.
- the surge protector 2 preferably comprises a varistor 21.
- a spark gap 22 may also be placed in series with the varistor 21.
- the disconnection device 3 comprises a first connection electrode 40 in electrical connection with a first connection pad 41 and a second connection electrode 50 in electrical connection with a second connection pad 51.
- connection pads 41, 51 are intended to be connected respectively to a phase and the neutral or vice versa.
- connection pads 41, 51 are intended to be connected respectively to a phase and earth or vice versa.
- the surge protector 2 is electrically connected in series with the disconnecting device 3 by at least one fuse link 8, 9.
- Drive means 10 permanently exert a displacement force Fd on the surge protector 2. If at least one of the fuse links is destroyed, the surge protector 2 then moves under the action of the displacement force Fd.
- the displacement of said limiter acts directly on an actuating mechanism 7 of the disconnection device 3 to cause permanent opening of the contacts 4, 6.
- the drive means 10 preferably comprise a spring.
- This coil-type spring is compressed or stretched to exert the displacement force Fd directly on the varistor 21.
- the varistor 21 is connected in series with the disconnection device 3 through two connection terminals 22, 24 .
- a first terminal 22 is connected to the disconnection device 3 by a flexible metal braid 23, and a second terminal 24 is connected to the second connection pad 51 by a rigid pin 25 integrating said at least one fuse link 8.9.
- the rigid axis 25 maintains the varistor 21 in a first position.
- the electrical contacts 4, 6 are then in a closed position.
- the rigid axis 25 releases the displacement of the varistor 21 under the action of the displacement force Fd.
- the varistor 21 moves to act directly on the actuating mechanism 7. Indeed, as shown on the Figures 6 and 7 the varistor 21 comes into contact with a trigger bar 71 of the actuating mechanism 7 which unlocks to place the contacts 4, 6 in the permanent open position.
- the contact disconnection device is calibrated firstly to discharge electrical currents of lightning waves of the 10/350 or 8/20 type without the actuating mechanism 7 being actuated, and secondly to actuate the actuating mechanism 7 and cause permanent opening of the contacts 4, 6 for alternating currents or continuous short circuit.
- the calibration of the known protection devices is carried out so that the actuating mechanism 7 of the disconnection device 3 remains locked in the presence of electric currents of lightning waves type 10/350 or 8/20. It is generally undesirable for the actuating mechanism 7 of the disconnecting device 3 to be unlocked and to cause the contacts 4, 6 to open permanently whenever an electric lightning current passes through it.
- the triggering energy threshold is directly dependent on the electric currents of 10/350 or 8/20 type lightning waves for which the opening of the contacts 4, 6 of the disconnection device 3 is not performed.
- said triggering energy threshold corresponds to the threshold beyond which electric currents of lightning waves of the 10/350 or 8/20 type would cause permanent opening of the electrical contacts 4, 6.
- the actuating mechanism 7 When the protection device is traversed by electric currents having an energy greater than a triggering energy threshold, the actuating mechanism 7 is actuated and moves the third moving arc switching electrode 60 and mechanically causing the permanent opening of the electrical contacts 4, 6.
- the electric currents responsible for actuating the actuating mechanism 7 are generally alternating currents or continuous short circuit.
- the protection device is effective and allows the flow of electric currents of lightning waves without their energy being responsible for material damage.
- the electric currents of 10/350 or 8/20 type lightning waves having an energy lower than the triggering energy threshold do not unlock the actuating mechanism of the disconnection device to cause the opening of the contacts.
- the contacts can generally open (repel) and close under a lightning strike without the actuating mechanism unlocking. These repulsions (openings) of the contacts during operation of the device of protection, are followed by an automatic re-closing of said contacts.
- the term "permanent opening" of the contacts means an opening caused by the actuating mechanism. The re-closing of the contacts is possible only by a voluntary external action of a user.
- the disconnecting device 3 further comprises a third movable arc switching electrode 60 electrically connected to the second connection pad 51.
- the actuating mechanism 7 moves the third movable arc switching electrode. 60 to cause the permanent opening of the electrical contacts 4, 6 when the protective device 1 is traversed by electric currents having an energy greater than a triggering energy threshold.
- the third movable arc switch electrode 60 is in contact with the first connection electrode 40 when the electrical contacts 4, 6 are closed.
- the surge protector 2 is then connected in series between the third movable arc switching electrode 60 and the second connection pad 51. According to the embodiment as presented on the FIG. Figures 10 to 12 , the displacement of said third electrode causes the permanent opening of the contacts 4, 6.
- the third mobile arc switching electrode 60 passes from a service position to a so-called switching position.
- the protection device comprises an arc extinguishing chamber 101.
- the first connection electrode 40 and the second connection electrode 50 are arranged facing the arc extinguishing chamber 101 and define the mouth of said chamber.
- arc extinction 101 Said chamber arc extinguishing device 101 comprises deionization fins 102 for cooling an electric arc 100 and extinguishing it.
- the surge protector 2 can be electrically connected to the second connection pad 51 by two fusible links 8, 9.
- a first fusible link 8 undergoes a melting in the event of overheating of the surge limiter 2, in particular of the varistor 21.
- the rigid axis connecting the varistor to the second connection pad 51 is soldered to the second terminal 24 of the varistor 21 by a low temperature solder. This solder melts in case of heating of the varistor.
- a second fusible link 9 acts as a disconnector against alternating or continuous currents of short circuits. Indeed, the second fusible link melts when it is crossed by alternating or continuous short circuit electric currents having an energy lower than the triggering energy threshold.
- the rigid axis 25 connecting the varistor 21 to the second connection pad 51 then comprises a section calibrated to melt when said axis is traversed by short-circuit electrical currents whose energy is below the tripping threshold.
- the surge protector 2 and the second fusible link 9 are simultaneously switched off when an electric arc 100 is switched between the first connection electrode 40 and the second connection electrode 50.
- the third movable arc switching electrode 60 is connected to the first connection electrode 40 by an insulating piece when the electrical contacts 4, 6 are closed.
- the insulating part forms a spark gap 22 electrically positioned in series with the varistor 21 of the surge protector 2.
- a high-energy disconnector 11 is connected in series between the first connection electrode 40 and the first connection pad 41. Said high-energy disconnector 11 is calibrated to disconnect when electrical currents having a higher energy flow through it. at the trigger energy threshold.
- said high energy disconnector is intended to act on the actuating mechanism 7 to cause permanent opening of the electrical contacts 4, 6.
- the high-energy disconnector 11 is then calibrated to act on the actuating mechanism 7 when it is crossed by electric currents having an energy higher than the triggering energy threshold.
- Said high-energy disconnector then comprises means for acting on the actuating mechanism 7 to cause permanent opening of the electrical contacts 4, 6.
- the high-energy disconnector 11 comprises electromagnetic tripping means or a fuse element.
- the disconnecting device comprises resetting means 72.
- the resetting means 72 allow the displacement of said third electrode from the so-called switching position to the so-called service position.
- the resetting means 72 it is possible to mechanically cause the closing of the contacts 4, 6 after permanent opening of said contacts.
- the rearming means 72 also allow to act on the actuating mechanism 7 to cause the permanent opening of the electrical contacts 4, 6.
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Fuses (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0700707A FR2912252B1 (fr) | 2007-02-01 | 2007-02-01 | Dispositif de protection contre les surtensions a electrode mobile avec systeme de deverrouillage du dispositif de deconnexion |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1953788A1 true EP1953788A1 (de) | 2008-08-06 |
EP1953788B1 EP1953788B1 (de) | 2010-02-24 |
Family
ID=38157923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08354007A Active EP1953788B1 (de) | 2007-02-01 | 2008-01-24 | Vorrichtung zum Schutz gegen Überspannungen mit beweglicher Elektrode und Entriegelungssystem der Verbindungsunterbrechungsvorrichtung |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1953788B1 (de) |
CN (1) | CN101277013B (de) |
AT (1) | ATE459089T1 (de) |
DE (1) | DE602008000677D1 (de) |
ES (1) | ES2338830T3 (de) |
FR (1) | FR2912252B1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2928026A1 (fr) * | 2008-02-27 | 2009-08-28 | Schneider Electric Ind Sas | Dispositif de protection contre les surtensions comprenant des moyens de deconnexion selectifs |
WO2012100793A1 (de) * | 2011-01-25 | 2012-08-02 | Ellenberger & Poensgen Gmbh | Schalteinheit zum schalten von hohen gleichspannungen |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2954579B1 (fr) * | 2009-12-18 | 2014-07-04 | Schneider Electric Ind Sas | Ensemble de protection contre les surtensions |
US11355925B2 (en) * | 2018-01-30 | 2022-06-07 | Hitachi Energy Switzerland Ag | System design solution for DC grid cost reduction and risk minimization |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0441722B1 (de) | 1990-02-08 | 1994-11-02 | Merlin Gerin | Abtrennbarer Überspannungsableiter für Niederspannungsnetz |
EP1607995A1 (de) | 2004-06-18 | 2005-12-21 | Schneider Electric Industries Sas | Sicherheitsvorrichtung gegen Überspannungen |
WO2006040418A1 (fr) * | 2004-10-08 | 2006-04-20 | Abb France | Dispositif de protection contre les surtensions pourvu de moyens de cisaillement d’arc et procede correspondant |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2840448B1 (fr) * | 2002-05-30 | 2004-07-23 | Schneider Electric Ind Sas | Dispositif de protection contre les surtensions |
FR2846478B1 (fr) * | 2002-10-25 | 2004-12-24 | Schneider Electric Ind Sas | Dispositif de protection contre les surtensions a electrode mobile |
-
2007
- 2007-02-01 FR FR0700707A patent/FR2912252B1/fr not_active Expired - Fee Related
-
2008
- 2008-01-24 DE DE602008000677T patent/DE602008000677D1/de active Active
- 2008-01-24 ES ES08354007T patent/ES2338830T3/es active Active
- 2008-01-24 EP EP08354007A patent/EP1953788B1/de active Active
- 2008-01-24 AT AT08354007T patent/ATE459089T1/de not_active IP Right Cessation
- 2008-01-31 CN CN200810004992.XA patent/CN101277013B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0441722B1 (de) | 1990-02-08 | 1994-11-02 | Merlin Gerin | Abtrennbarer Überspannungsableiter für Niederspannungsnetz |
EP1607995A1 (de) | 2004-06-18 | 2005-12-21 | Schneider Electric Industries Sas | Sicherheitsvorrichtung gegen Überspannungen |
WO2006040418A1 (fr) * | 2004-10-08 | 2006-04-20 | Abb France | Dispositif de protection contre les surtensions pourvu de moyens de cisaillement d’arc et procede correspondant |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2928026A1 (fr) * | 2008-02-27 | 2009-08-28 | Schneider Electric Ind Sas | Dispositif de protection contre les surtensions comprenant des moyens de deconnexion selectifs |
EP2096657A1 (de) * | 2008-02-27 | 2009-09-02 | Schneider Electric Industries SAS | Vorrichtung zum Schutz gegen Überspannungen, die selektive Unterbrechungsmittel umfasst |
US8009401B2 (en) | 2008-02-27 | 2011-08-30 | Schneider Electric Industries Sas | Voltage surge protection device comprising selective disconnection means |
WO2012100793A1 (de) * | 2011-01-25 | 2012-08-02 | Ellenberger & Poensgen Gmbh | Schalteinheit zum schalten von hohen gleichspannungen |
US8766760B2 (en) | 2011-01-25 | 2014-07-01 | Ellenberger & Poensgen Gmbh | Switchgear unit for switching high DC voltages |
AU2011338139B2 (en) * | 2011-01-25 | 2014-08-14 | Ellenberger & Poensgen Gmbh | Switchgear unit for switching high DC voltages |
Also Published As
Publication number | Publication date |
---|---|
ATE459089T1 (de) | 2010-03-15 |
FR2912252B1 (fr) | 2009-03-06 |
CN101277013B (zh) | 2012-07-04 |
EP1953788B1 (de) | 2010-02-24 |
FR2912252A1 (fr) | 2008-08-08 |
DE602008000677D1 (de) | 2010-04-08 |
CN101277013A (zh) | 2008-10-01 |
ES2338830T3 (es) | 2010-05-12 |
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