EP2873082A1 - Verfahren zum schliessen eines schalters und schalter zur durchführung des verfahrens - Google Patents
Verfahren zum schliessen eines schalters und schalter zur durchführung des verfahrensInfo
- Publication number
- EP2873082A1 EP2873082A1 EP13756842.4A EP13756842A EP2873082A1 EP 2873082 A1 EP2873082 A1 EP 2873082A1 EP 13756842 A EP13756842 A EP 13756842A EP 2873082 A1 EP2873082 A1 EP 2873082A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- movable
- contact surface
- switch
- counter
- 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
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000000284 resting effect Effects 0.000 claims 1
- 239000012811 non-conductive material Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/42—Knife-and-clip contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
Definitions
- the invention relates to a method for closing a switch and a switch for carrying out the method according to the preambles of claims 1 and 4.
- Switches in the form of low-voltage switch disconnectors are known and serve for switching on and interrupting an electric current.
- a pole housing is provided, the side walls abut each other.
- switching contacts In each pole housing are movable and firmly arranged switching contacts, wherein the movable switch contacts are each at the free end of a pivoting lever.
- To open the switch the abutting contact surfaces of the switching contacts are separated from each other by means of a switching shaft, wherein the contact surfaces each extend parallel to each other.
- the selector shaft runs transversely to the
- the switch contacts are often in the form of blade contacts, one of which is fixed and the other is movable.
- the object of the invention is to propose a switch which ensures a low-wear closing, in particular when closing to a short circuit.
- the solution provides that a movable counter-pressure element presses the movable contact surface in the open position in the direction of the common contact plane, whereby the transverse offset is at least reduced, that the counter-pressure element is moved together with the movable switching contact in the closed position upon closing of the switch and that the counter-pressure element is held in the course of the closing movement, while the movable contact surface is moved further into the closed position.
- the movable contact surface is moved before and after the holding respectively in the contact plane or in a plane parallel to the contact plane and that the movable contact surface after stopping at the counter-pressure element and / or at the fixed contact surface in the Closed position slides.
- the energy available during opening can be best utilized if the movable contact surface is pressed in the direction of the common contact plane in the course of the opening movement.
- the solution provides that a movable counter-pressure element is provided, which presses in the open position against the movable contact surface and at least reduces the transverse offset, that the counter-pressure element together with the moving lent switching contact moves in the direction of the closed position and that the counter-pressure element remains in the course of the closing movement, while the movable contact surface moves further in the closed position.
- the movable contact surface moves before and after standing respectively in the contact plane or in a plane parallel to the contact plane and that the movable contact surface after standing still on the counter-pressure element and / or adjacent to the fixed contact surface in the Closed position slides, in which it rests only on the fixed contact surface.
- a technically simple solution provides that the stop is formed by the fixed switching contact.
- a secure closing is achieved when the movable contact surface slides on the fixed contact surface in the closed position.
- a particularly secure design is obtained when the movable switching contact is formed as facing each other resilient contact elements and the fixed switching contact as a contact blade (contact plate) between which pushes the contact blade in the course of the closing movement.
- a simple elastic embodiment provides that the contact elements are designed as contact springs.
- FIG. 2 shows the switch according to FIG. 1 in an intermediate position
- FIG. 3 the switch of FIG. 1 is turned on and Fig. 4 shows the switch of FIG. 2 with double contact.
- FIG. 1 shows a schematic illustration of an opened switch 1 in the form of a low-voltage switch-disconnector which serves to switch on and off an electrical current.
- the switch 1 has a plurality of pole housing la, the side walls lb abut each other.
- An open pole housing 1a is shown in FIG. 1, which shows the switch 1 in its open position.
- connection lugs 2, 3 are connected to the corresponding external power cable (not shown).
- the terminal lug 3 is connected to a fixed switching contact 4, which is designed as a contact blade 4a.
- a movable switching contact 5 is designed as a lever 8 and pivotable about an axis of rotation 6.
- the lever 8 carries at its free end resilient contact elements 5a, which have two facing contact surfaces 5b.
- the rotatably mounted on the rotation axis 6 lever end is connected via a conductive connecting piece 7 with the terminal lug 2.
- quenching plates 7a are provided for deleting a resulting when opening the switch 1 between the switching contacts 4, 5 arc.
- a plate-shaped pressure element 11 made of electrically non-conductive material, which presses the contact elements 5a and thus the contact surfaces 5b apart. It acts here as a spreading element IIa, which spreads the contact elements 5a elastic.
- the distance of the contact surfaces 5b is here by the expansion element IIa the width of the contact blade 4a (it can of course be greater than here in this embodiment).
- the expansion element IIa is independent of the movable contact elements 5a freely pivotable about a rotation axis 6a and connected via the contact surfaces 5b non-positively with the contact elements 5a.
- FIG. 2 shows the movable switch contact 5 in switch-on movement together with the expansion element IIa clamped between the contact elements 5a in an intermediate position in which the expansion element IIa bears against a stop 12, which is formed here by an edge 12a of the fixed switch contact 4.
- the expansion element IIa is simply taken along as far as the stop 12 when the movable switching contact 5 is pivoted.
- the movable switching contact 5 is in its closed position.
- the movable contact surfaces 5b are each applied to a (fixed) contact surface 4b of the contact blade 4a pressurized.
- Each two contact surfaces 4b, 5b are each in a common plane, which are hereinafter referred to as contact planes.
- the contact blade 4a in turn lies in the same plane as the plate-shaped counterpressure element 11, here referred to as the contact blade plane. So there are two parallel contact planes, which are spaced apart and between which lies centrally the contact blade level.
- the movable contact surfaces 5b in the intermediate position would have a transverse offset with respect to the contact planes when closing, which is almost compensated by the expansion element IIa by the spreading (can of course also be overcompensated as here in this embodiment).
- the movable contact surfaces 5b move before and after the stop 12 respectively in the contact plane or in a plane parallel to the contact plane and slide behind the stop 12 on the fixed contact surface 4b (and possibly also on the counter-pressure element 11) fitting in the closed position.
- the movable switching contacts 5 move in the course of the closing movement almost unhindered and in the shortest time to its closed position in which the contact surfaces 4b, 5b pressurized abut each other.
- the pressurization comes about through the transverse offset and corresponds approximately to the force with which the counter-pressure element 11, the resilient contact elements 5a (to compensate for the transverse offset) apart.
- Compensation of the transverse offset here means that the contact surfaces 4b, 5b slidingly move (with over-compensation at a distance) to the closed position and thereby already contact each other, wherein the effective contact surface in the contact area steadily (in overcompensation in the closed position abruptly) increased.
- the retarding effect of the friction between the contact surfaces 4b, 5b is negligible.
- the time and force claiming spreading is completely eliminated, since the contact elements 5a are already pushed apart.
- the stationary switching contact 4 designed as contact blade 4a emerges into the moving gap without reducing the switch-on speed, which is formed by the contact surfaces 5b of the contact elements 5a, wherein the expansion element IIa is successively replaced by the contact blade 4a.
- the transverse offset from the counter-pressure element 11 is not completely compensated (canceled) but only reduced, so that a (small) transverse offset remains. It is also possible that the transverse offset is overcompensated, so that the contact surfaces 4b, 5b coincide only in the closed position.
- the spreading takes place in the course of the opening movement, in which the expansion element IIa first abuts against the contact elements 5a and is taken along until it abuts against a stop with reference to FIG. 3, while the contact elements 5a move further in the direction of the stop and by the expansion element IIa be pushed apart by the force of the turn-off over the shift shaft 10.
- the switch-on of the switch contacts 4, 5 takes place with little force and higher switching speed. Higher switching speeds usually allow higher powers to be switched.
- the functional principle can be applied to all switches in which there are at least one stationary and one movable switching contact 4, 5, which are generally designed in the form of blade contacts.
- Fig. 4 shows the switch 1 of FIG. 2 with double
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012215479.5A DE102012215479B4 (de) | 2012-08-31 | 2012-08-31 | Verfahren zum Schließen eines Schalters und Schalter zur Durchführung des Verfahrens |
PCT/EP2013/067437 WO2014033039A1 (de) | 2012-08-31 | 2013-08-22 | Verfahren zum schliessen eines schalters und schalter zur durchführung des verfahrens |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2873082A1 true EP2873082A1 (de) | 2015-05-20 |
EP2873082B1 EP2873082B1 (de) | 2016-09-28 |
Family
ID=49115483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13756842.4A Active EP2873082B1 (de) | 2012-08-31 | 2013-08-22 | Verfahren zum schliessen eines schalters und schalter zur durchführung des verfahrens |
Country Status (5)
Country | Link |
---|---|
US (1) | US9734958B2 (de) |
EP (1) | EP2873082B1 (de) |
CN (1) | CN104584169B (de) |
DE (1) | DE102012215479B4 (de) |
WO (1) | WO2014033039A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105185609A (zh) * | 2015-08-26 | 2015-12-23 | 江山市电器技术开发有限公司 | 一种带有利用电动力静触头的接地开关 |
US11158466B2 (en) * | 2018-05-10 | 2021-10-26 | Mitsubishi Electric Corporation | Switch |
EP3726553B1 (de) * | 2019-04-18 | 2022-10-19 | ABB Schweiz AG | Schaltvorrichtung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE714084C (de) * | 1940-04-03 | 1941-11-21 | Sachsenwerk Licht & Kraft Ag | Trennschalter |
DE1540591C3 (de) * | 1965-11-17 | 1974-09-19 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Lasttrennschalter mit beweglichem Schaltstück je Polbahn |
US4321436A (en) * | 1980-04-04 | 1982-03-23 | Federal Pacific Electric Company | Electrical circuit interruptors |
DE3338244A1 (de) * | 1983-10-21 | 1985-05-15 | K.A. Schmersal Gmbh & Co, 5600 Wuppertal | Elektrischer schnappschalter |
DE19510809C1 (de) * | 1995-03-24 | 1996-07-04 | Reinhausen Maschf Scheubeck | Lastumschalter eines Stufenschalters |
DE19612273C1 (de) * | 1996-03-28 | 1997-10-02 | E I B S A | Kontaktstücke für Lasttrennschalter |
DE102005060633A1 (de) * | 2005-12-13 | 2007-06-14 | Siemens Ag | Lasttrennschalter für eine gekapselte Schaltanlage |
EP2249359B1 (de) * | 2009-05-04 | 2018-08-15 | ABB Schweiz AG | Mittelspannungs-Hauptschalterkontaktanordnung |
-
2012
- 2012-08-31 DE DE102012215479.5A patent/DE102012215479B4/de not_active Expired - Fee Related
-
2013
- 2013-08-22 EP EP13756842.4A patent/EP2873082B1/de active Active
- 2013-08-22 US US14/421,891 patent/US9734958B2/en active Active
- 2013-08-22 WO PCT/EP2013/067437 patent/WO2014033039A1/de active Application Filing
- 2013-08-22 CN CN201380044126.2A patent/CN104584169B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2014033039A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN104584169A (zh) | 2015-04-29 |
DE102012215479A1 (de) | 2014-03-06 |
US9734958B2 (en) | 2017-08-15 |
US20150206667A1 (en) | 2015-07-23 |
WO2014033039A1 (de) | 2014-03-06 |
EP2873082B1 (de) | 2016-09-28 |
CN104584169B (zh) | 2017-04-05 |
DE102012215479B4 (de) | 2014-08-21 |
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