EP0466977A2 - Dispositif commutateur pour commuter des charges importantes - Google Patents

Dispositif commutateur pour commuter des charges importantes Download PDF

Info

Publication number: EP0466977A2
Authority: EP; European Patent Office
Prior art keywords: relay; contacts; parallel; circuit; diode
Prior art date: 1990-07-18
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

Application number

EP90124630A

Other languages

German (de)

English (en)

Other versions

EP0466977A3 (en

EP0466977B1 (fr

Inventor

Richard Siepmann

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

Siemens Corp

Original Assignee

Siemens AG

Siemens Corp

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.)

1990-07-18

Filing date

1990-12-18

Publication date

1992-01-22

1990-12-18 Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG

1992-01-22 Publication of EP0466977A2 publication Critical patent/EP0466977A2/fr

1992-11-25 Publication of EP0466977A3 publication Critical patent/EP0466977A3/de

1995-07-19 Application granted granted Critical

1995-07-19 Publication of EP0466977B1 publication Critical patent/EP0466977B1/fr

2010-12-18 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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Images

Classifications

- 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
- H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
- 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
- H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits

Definitions

the invention relates to a circuit arrangement for switching high loads with electromagnetic relays.
bridge contacts with erosion-proof contact material are often necessary.
these contact materials often have undesirably high, fluctuating contact resistances given the contact forces customary in relays.
To switch high voltages it is also known to connect contacts in series, which reduces the voltage drop across the individual contacts. However, such a circuit brings additional contact uncertainty because of the multiple contact resistance.
relays with a forward contact for switching such loads e.g. DE-B-1 175 807, DE-A-33 10 458
an earlier-closing and later-opening tungsten contact taking over the switching process and a silver contact in the switched on state ensures safe contact.
Such lead contacts require special production for the relays in question with a correspondingly increased outlay when processing different contact materials on common contact springs and a correspondingly complex adjustment for the chronological sequence of the switching.
the object of the invention is to provide a circuit arrangement which can be switched with a simple structure, high loads using series-produced relays, both the prevention of erosion and welding during switching itself and a good contact transition in the switched-on state are ensured.
the circuit arrangement according to the invention instead of a known complex lead contact in a relay, two standard relays with correspondingly different contacts are used and matched to one another with simple circuit means so that the relay with the erosion-resistant contacts takes over the switching on and off, while a second relay with good ones Contact transition properties when switched on takes over the majority of the load current.
the first relay has sweat and erosion-resistant single or bridge contacts made of common materials for this purpose, e.g. B. AgSn0 2 , W or AgCdO, while the second relay has single or double contacts from also known materials with low volume resistance, for example silver or silver-gold alloys.
the excitation windings of the two relays are connected in series, and a diode is connected in parallel to each winding via a capacitor such that the diode on the first relay blocks when switched on and the diode on the second relay is continuous when switched on .
the excitation windings must be designed for about half the operating voltage because of the series connection, the desired switching sequence of the two relays being ensured with the two diodes and the two capacitors.
a first resistor is expediently connected in parallel with the diode of the first relay and a second resistor in parallel with the capacitor of the second relay. Since the first operating voltage is also present at the first relay when it is switched on, it can also have a response value that is higher than half the operating voltage. Relays with higher response values can generate increased contact forces, which can be used to advantage here.
the circuit arrangement of Figure 1 shows a first relay A and a second relay B, which are connected in series in an excitation circuit, an operating voltage + U can be connected to the excitation windings via a switch contact k.
a diode D1 and a capacitor C1 are in series, weh A capacitor C2 and a diode D2 are connected in parallel with the winding of the relay B.
the diodes D1 and D2 are each polarized so that when the operating voltage is applied to the series connection of the relays, the diode D1 is initially blocked, while the diode D2 is conductive.
a resistor R1 is also connected in parallel with the diode D1, while a resistor R2 is connected in parallel with the capacitor C2.
the contact pairs a1 and a2 of relay A are connected in series as a bridge contact in the load circuit of a load resistor RL.
the two contact pairs b1 and b2 of relay B are also located in this load circuit parallel to the bridge contact.
the capacitor C1 is charged via the resistor R1 during operation. If the operating voltage is now switched off, the diode D2 blocks, while the diode D1 conducts, so that the relay B drops out immediately, but the relay A only drops out after the capacitor C1 has discharged. The capacitor C2 is then discharged via the resistor R2.
FIG. 2 shows the timing of the switching process described above over a time axis t.
Curve a shows the state of the switch contact k (0 or 1).
Curve b shows the curve of the excitation voltage U A at relay A, curve c the corresponding voltage curve U B at relay B.
Curves d and e show the corresponding switching state (0 or 1) of the associated contacts a1, a2 or b1 and b2. It can be seen that at time t1, relay A with contacts a1 and a2 switches through, but relay B with contacts b1 and b2 only delays at time t2. When switching off at time t3, relay B initially drops out, causing contacts b1 and b2 to open. Only then does relay A drop out with a delay and open contacts a1 and a2 (time t4).

Landscapes

Relay Circuits (AREA)
Electronic Switches (AREA)
Keying Circuit Devices (AREA)

EP90124630A 1990-07-18 1990-12-18 Dispositif commutateur pour commuter des charges importantes Expired - Lifetime EP0466977B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4022893		1990-07-18
DE4022893A DE4022893C1 (fr)	1990-07-18	1990-07-18

Publications (3)

Publication Number	Publication Date
EP0466977A2 true EP0466977A2 (fr)	1992-01-22
EP0466977A3 EP0466977A3 (en)	1992-11-25
EP0466977B1 EP0466977B1 (fr)	1995-07-19

Family

ID=6410548

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90124630A Expired - Lifetime EP0466977B1 (fr)	1990-07-18	1990-12-18	Dispositif commutateur pour commuter des charges importantes

Country Status (3)

Country	Link
EP (1)	EP0466977B1 (fr)
AT (1)	ATE125391T1 (fr)
DE (2)	DE4022893C1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR3087957B1 (fr) *	2018-10-31	2021-07-16	Schneider Electric Ind Sas	Dispositif d'interconnexion d'appareils de coupure d'un courant electrique
DE102022207772A1 (de) *	2022-07-28	2024-02-08	Robert Bosch Gesellschaft mit beschränkter Haftung	MEMS-Relais mit Sicherheitsfunktion

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1175807B (de) *	1959-04-10	1964-08-13	Schaltbau Gmbh	Elektrische Zwillingskontaktanordnung mit zeit-lich nacheinanderschaltenden Kontaktpaaren
DE2808942A1 (de) *	1978-03-02	1979-09-06	Tekade Felten & Guilleaume	Schaltungsanordnung zum umschalten von relais
DE3310458A1 (de) *	1983-03-23	1984-10-04	Standard Elektrik Lorenz Ag, 7000 Stuttgart	Elektrische schaltvorrichtung
US4584621A (en) *	1984-01-23	1986-04-22	Yang Tai Her	Two or more than two poles switch means having unequal contact gaps and turn off capacities
GB2170654A (en) *	1985-02-01	1986-08-06	Greenwood Systems Limited	Switching arrangement

1990
- 1990-07-18 DE DE4022893A patent/DE4022893C1/de not_active Expired - Fee Related
- 1990-12-18 AT AT90124630T patent/ATE125391T1/de active
- 1990-12-18 DE DE59009423T patent/DE59009423D1/de not_active Expired - Fee Related
- 1990-12-18 EP EP90124630A patent/EP0466977B1/fr not_active Expired - Lifetime

Also Published As

Publication number	Publication date
ATE125391T1 (de)	1995-08-15
DE4022893C1 (fr)	1991-08-29
EP0466977A3 (en)	1992-11-25
DE59009423D1 (de)	1995-08-24
EP0466977B1 (fr)	1995-07-19

Legal Events

Date	Code	Title	Description
1991-12-07	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1992-01-22	17P	Request for examination filed	Effective date: 19901218
1992-01-22	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT DE FR GB IT
1992-10-05	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1992-11-25	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT DE FR GB IT
1995-01-11	17Q	First examination report despatched	Effective date: 19941124
1995-06-02	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-07-19	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT DE FR GB IT
1995-07-19	REF	Corresponds to:	Ref document number: 125391 Country of ref document: AT Date of ref document: 19950815 Kind code of ref document: T
1995-08-24	REF	Corresponds to:	Ref document number: 59009423 Country of ref document: DE Date of ref document: 19950824
1995-10-13	ITF	It: translation for a ep patent filed
1995-10-25	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19950925
1995-11-03	ET	Fr: translation filed
1995-11-23	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19951123 Year of fee payment: 6
1995-11-29	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19951129 Year of fee payment: 6
1995-12-26	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19951226 Year of fee payment: 6
1996-05-24	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1996-05-24	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1996-07-10	26N	No opposition filed
1996-09-03	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19960903
1996-12-18	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19961218 Ref country code: AT Effective date: 19961218
1997-08-06	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19961218
1997-08-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19970829
1997-10-31	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2005-12-18	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051218

Publication	Publication Date	Title
EP1228519A1 (fr)	2002-08-07	Commutateur de securite servant a la mise sous tension et a la mise hors tension de securite d'un recepteur electrique, en particulier d'une machine a entrainement electrique
DE1118858B (de)	1961-12-07	Leistungsschalter mit Parallelkapazitaeten
DE3217528C2 (de)	1986-04-03	Kontaktanordnung für Relais
DE3541338C2 (fr)	1989-03-09
EP0466977B1 (fr)	1995-07-19	Dispositif commutateur pour commuter des charges importantes
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DE2019184C3 (de)	1975-03-20	Starkstromschalteinrichtung
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DE3127460C2 (de)	1985-09-19	Schaltungsanordnung für einen leistungsbegrenzten Wechselrichter
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DE2355514B2 (de)	1980-05-08	Lastumschalter für Transformatoren
DE2736521C3 (de)	1980-10-09	Lastumschalter für Transformatoren
DE2451011C2 (de)	1984-06-07	Hochspannungs-Leistungsschalter mit Ein- und Ausschaltwiderständen
DE2359628C3 (de)	1981-11-26	Wender zum Umschalten der Fein- oder Grobstufenwicklung eines mit einem Stufenschalter ausgerüsteten Transformators
DE3153262C2 (de)	1987-03-05	Schaltungsanordnung zum Betrieb eines bistabilen Relais mit monostabiler Schaltcharakteristik
DE3425831A1 (de)	1986-01-16	Heizvorrichtung
DE2804320C3 (de)	1982-02-11	Lastumschalter für Transformatoren
DE4228643C2 (de)	1995-04-13	Schaltmodul
DD157237A1 (de)	1982-10-20	Schaltungsanordnung zur erhoehung der schaltleistung bei schwellwertschaltern mit relaisausgang
DE2125763A1 (fr)	1972-12-07