EP0865661B1 - Schützsicherheitskombination - Google Patents
Schützsicherheitskombination Download PDFInfo
- Publication number
- EP0865661B1 EP0865661B1 EP96946017A EP96946017A EP0865661B1 EP 0865661 B1 EP0865661 B1 EP 0865661B1 EP 96946017 A EP96946017 A EP 96946017A EP 96946017 A EP96946017 A EP 96946017A EP 0865661 B1 EP0865661 B1 EP 0865661B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contactors
- safety combination
- combination according
- contactor safety
- contactor
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/001—Means for preventing or breaking contact-welding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/32—Latching movable parts mechanically
- H01H50/323—Latching movable parts mechanically for interlocking two or more relays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/001—Means for preventing or breaking contact-welding
- H01H2003/002—Means for preventing or breaking contact-welding with lockout, e.g. two contact pairs in series
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
- H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
Definitions
- the invention relates to a contactor safety combination with a restart lock by mutual locking the shooter.
- Contactor safety combinations of the generic type are considered electrical Circuits known. They usually consist of three Auxiliary contactors or relays. A contactor K1 the position of the contactors K2 and K3 queried before switching on according to the circuit shown in FIG 8. Im trouble-free Operation will be the release group consisting of Series connection of NC contacts K1, NO contacts K2 and NO contacts K3, switched through by NC contact K1. Safe shutdown even in In the event of a fault, the make contact K2 and K3 guaranteed. The functionality of these versions is by an electrical lock or position query the K1, K2 and K3 contactors are guaranteed. Characteristic for the embodiment is a high wiring effort. To avoid wiring errors, the main part the necessary wiring via a printed circuit board realized. The quality of the enabling current path on the circuit board determines the permissible current. This is known Contactor safety combinations below the permissible Current of single contactors.
- DE 24 40 361 B2 discloses a locking module, who connects two contactors via their switching heads.
- the locking module does not act as a restart lock in the fault state of one of the two contactors, but to ensure that during normal operation in Switching state "ON" of the one contactor forced this other contactor is in the "OFF" switching state.
- a relay is prevented from being switched on again DE 36 02 692 Al known.
- the restart lock of one two contact arrangements simultaneously by means of a switching finger switching relay is realized here.
- On the two Movable contacts of the contact arrangements engage a common one Switching element on which a pointer is formed. Its free end lies in the path of the shift finger, when both movable contacts in the same position stand.
- the pointer and the shift finger are so narrow that the operating surface of the pointer outside the Trajectory of the shift finger is when the switching element due to different position of the two movable Contacts, i.e. when gluing one of the contacts, pivoted is.
- the invention has for its object a contactor safety combination of the above type to create the is inexpensive and simple to use Sagittarius of any size and with only two shooters gets along.
- the object is achieved according to the features Claim 1 solved.
- the advantage of this solution is that any size contactors can be switched, and that it is also possible to switch powerful consumers. Standard shooters can be used in conjunction with the Locking module from the customer to a contactor safety combination be assembled together.
- the solution is suitable for both AC and DC contactors.
- 1 shows the position of contactors 1 and 3 before switching on in undisturbed condition.
- Each of the two shooters 1 or 3 has a first contact carrier 2 or a second Contact carrier 4, through which - as indicated - make contacts 15 or 16 are switchable.
- the contact carrier 2 or 4 have projections 6 through a recess 7 in the project through the respective housing wall 8 of the contactors 1 and 3 and are provided at the end with a round pin 17.
- the recesses 7 are dimensioned so that the formations 6 on the contact carriers 2 and 4 when switching on Normally open contacts 15 and 16 can move freely in them.
- the locking module 5 comprises a heart-shaped coupling element 9, the tip of which is designed as a nose-shaped projection 10 is, as well as two scissors crossed, rotatably mounted beams 12, which are directed towards the coupling element 9
- the ends are pointed, while the opposite ends are connected to each other by a tension spring 13.
- the locking components 9, 12, 13 are cuboid Housing 19 arranged. Through the two bars 12 is one Opening 11 is formed, in which the nose-shaped projection 10 of the Coupling element 9 dips when contactors 1 and 3 are switched on.
- the coupling element arranged above the opening 11 9 has slots 18 on both sides, into which the round pins 17 of the projections 6 of both contactors 1 and 3 inserted are. This results in pivot bearings via which the coupling element 9 held and rotatable about its center of gravity.
- Stops 20 are provided, their function elsewhere is described.
- the disturbed State is based on welding one of the NO contacts 15 or 16, in the present case a NO contact 16 of the second protection 3 is welded, so that the associated second contact carrier 4 is caught and the other first contact carrier 2 of the undisturbed first Protection 1 moves freely upwards.
- the holder of the coupling element 9 via the pivot bearing 17, 18 enables such Movement in which the coupling member 9 rotates and its nose-shaped Projection 10 on the inside of one bar 12 slides along.
- the one exercised on the beam 12 Pressure can be due to the rotatable mounting of the bar 12 in Connection with the tension spring 13 without problems, i.e. without damaging Stress are recorded.
- FIG. 4 shows the position of the contact carriers 2 and 4 and the Coupling element 9 after completion of the switch-off process.
- the nose-shaped projection 10 engages behind the tapered End of the beam 12 facing the undisturbed first protection 1 is, and at the same time lies on one of the stops 20 on.
- the coupling element 9 blocked in this way is prevented a new activation of the first protection 1.
- the second protection is also locked 3, after one of the normally open contacts 15 of the first protection 1 is welded. This means that a release is only possible occurs when from a trouble-free state, i.e. Not welded normally open contacts 15 or 16 turned on becomes.
- FIG. 5 shows a circuit diagram of the contactor safety combination pictured.
- the normally open contacts 15 and 16 of the contactors 1 and 3 are connected in series. As a result, even then be switched off if during or after switching on weld 1 or 3 NO contacts to one of the contactors.
- the lock is designed so that the contactors are independent can open from each other. The error will appear the next time you turn it on reliably recognized.
- the wiring effort is limited to direct control of the coils and the wiring of the enabling circuits. Through the protection-appropriate Wiring is a limitation of the data of the individual devices not necessary for the combination.
- the locking module 5 can be between the shooters (see FIG. 6), on the front (FIG. 7) of the contactors, as also sit under the shooters.
- the contactor safety combination described still has the advantage that with slight welding of a contactor there is a possibility that the second protection when trying switching off the welding.
- Auxiliary switch, Blocks and other accessories can be used for the shooter as well be used before.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
- FIG 1
- zwei Schütze und einen diese koppelnden Verriegelungsbaustein in der Stellung der Schütze vor dem Einschalten im ungestörten Zustand,
- FIG 2
- die prinzipielle Kopplung zweier Schütze mit einem Verriegelungsbaustein in der Stellung der Schütze nach dem Einschalten im ungestörten Zustand,
- FIG 3
- die prinzipielle Kopplung zweier Schütze mit einem Verriegelungsbaustein mit während des Ausschaltvorgangs im gestörten Zustand,
- FIG 4
- die prinzipielle Kopplung zweier Schütze mit einem Verriegelungsbaustein nach Beendigung des Ausschaltvorgangs im gestörten Zustand,
- FIG 5
- eine elektrische Schaltung der Schützsicherheitskombination,
- FIG 6
- eine Anordnung des Verriegelungsbausteines gemäß FIG 1 bis 4 zwischen zwei Schützen,
- FIG 7
- eine Anordnung des Verriegelungsbausteins gemäß FIG 1 bis 4 an der Frontseite zweier Schütze.
Claims (9)
- Schützsicherheitskombination mit zwei Schützen (1,3) und mit einer Wiedereinschaltsperre durch gegenseitige Verriegelung der Schütze (1,3), dadurch gekennzeichnet, daß die Wiedereinschaltsperre durch einen Verriegelungsbaustein (5) realisiert ist, der mit Kontaktträgern (2,4) der Schütze (1,3) lösbar verbunden ist.
- Schützsicherheitskombination nach Anspruch 1, dadurch gekennzeichnet, daß die lösbare Verbindung als Steckverbindung ausgeführt ist.
- Schützsicherheitskombination nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Kontaktträger (2,4) jeweils eine Anformung (6) zur Ankopplung an den Verriegelungsbaustein (5) aufweisen und die Anformungen (6) durch Ausnehmungen (7) in einer Gehäusewand (8) der Schütze (1,3) hindurchragen.
- Schützsicherheitskombination nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Verriegelungsbaustein (5) ein mit den beiden Anformungen (6) gekoppeltes Koppelelement (9) aufweist, das bei Einschalten der Schütze (1,3) in ihrem ungestörten Zustand mit seinem nasenförmigen Vorsprung (10) in eine Öffnung (11) von einem Verriegelungsmechanismus (12,13) taucht.
- Schützsicherheitskombination nach Anspruch 4, dadurch gekennzeichnet, daß die Öffnung (11) durch zwei scherenförmig gekreuzt liegende, drehbar gelagerte Balken (12) gebildet ist, die durch eine Zugfeder (13) miteinander verbunden sind.
- Schützsicherheitskombination nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Koppelelement (9) über Drehlager (17,18) an den Anformungen (6) gehalten ist.
- Schützsicherheitskombination nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Koppelelement (9) bei Ausschaltung der Schütze (1,3) nach Verschweißen eines der Kontakte (15 oder 16) sich unter Drehung um seinen Schwerpunkt aus der Öffnung (11) herausbewegt und einen der beiden Balken (12) hintergreift, wodurch die Einschaltbewegung blockiert wird.
- Schützsicherheitskombination nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Anformungen (6) an den Kontaktträgern (2,4) durch die Gehäuseseitenwände (8) der Schütze (1,3) hindurchragen und mit dem zwischen den Schützen (1,3) liegenden Verriegelungsbaustein (5) gekoppelt sind.
- Schützsicherheitskombination nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Schütze (1,3) über einen frontseitig angeordneten Verriegelungsbaustein (5) miteinander gekoppelt sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19545540 | 1995-12-06 | ||
DE19545540A DE19545540C2 (de) | 1995-12-06 | 1995-12-06 | Schützsicherheitskombination |
PCT/DE1996/002268 WO1997021238A2 (de) | 1995-12-06 | 1996-11-26 | Schützsicherheitskombination |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0865661A2 EP0865661A2 (de) | 1998-09-23 |
EP0865661B1 true EP0865661B1 (de) | 1999-08-18 |
Family
ID=7779365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96946017A Expired - Lifetime EP0865661B1 (de) | 1995-12-06 | 1996-11-26 | Schützsicherheitskombination |
Country Status (5)
Country | Link |
---|---|
US (1) | US6054656A (de) |
EP (1) | EP0865661B1 (de) |
CN (1) | CN1063574C (de) |
DE (2) | DE19545540C2 (de) |
WO (1) | WO1997021238A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101246791B (zh) * | 2007-02-12 | 2011-04-13 | 浙江正泰电器股份有限公司 | 具有机械互锁装置的低压电器 |
US8222548B2 (en) * | 2008-07-30 | 2012-07-17 | Generac Power Systems, Inc. | Automatic transfer switch |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2359606A (en) * | 1942-02-13 | 1944-10-03 | Fed Electric Prod Co | Electric switch with mechanical interlock |
US2604796A (en) * | 1950-09-08 | 1952-07-29 | Westinghouse Electric Corp | Interlock |
US3391257A (en) * | 1967-02-14 | 1968-07-02 | Westinghouse Electric Corp | Maintained-position interlocking mechanism for interlocking a pair of pushbutton switches |
US3735295A (en) * | 1972-03-28 | 1973-05-22 | Westinghouse Electric Corp | Electric control devices with mechanical interlock |
US3953697A (en) * | 1973-11-28 | 1976-04-27 | Teichert Allen L | Dual fulcrum switch |
DE2440361B2 (de) * | 1974-08-23 | 1977-01-27 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Mechanische verriegelung von beweglichen teilen |
US4544814A (en) * | 1984-01-19 | 1985-10-01 | Eaton Corporation | Mechanical interlock for contactors |
DE3602692A1 (de) * | 1986-01-30 | 1987-08-06 | Ako Werke Gmbh & Co | Wiedereinschaltsperre eines relais |
-
1995
- 1995-12-06 DE DE19545540A patent/DE19545540C2/de not_active Expired - Fee Related
-
1996
- 1996-11-26 EP EP96946017A patent/EP0865661B1/de not_active Expired - Lifetime
- 1996-11-26 WO PCT/DE1996/002268 patent/WO1997021238A2/de active IP Right Grant
- 1996-11-26 DE DE59602825T patent/DE59602825D1/de not_active Expired - Fee Related
- 1996-11-26 CN CN96198278A patent/CN1063574C/zh not_active Expired - Fee Related
-
1998
- 1998-06-04 US US09/077,905 patent/US6054656A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19545540C2 (de) | 1998-04-09 |
DE59602825D1 (de) | 1999-09-23 |
CN1063574C (zh) | 2001-03-21 |
WO1997021238A3 (de) | 1997-08-14 |
DE19545540A1 (de) | 1997-06-12 |
US6054656A (en) | 2000-04-25 |
CN1202267A (zh) | 1998-12-16 |
EP0865661A2 (de) | 1998-09-23 |
WO1997021238A2 (de) | 1997-06-12 |
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