Relay

Patent metadata

Field	Value
Publication number	US-2016172138-A1
Application number	US-201514903571-A
Country	US
Kind code	A1
Filing date	May 21, 2015
Priority date	Jun 4, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

The present invention relates to a relay ( 1 ), having a first terminal ( 2 ), a second terminal ( 3 ), a contact ( 4 ) which in a closed state brings about an electrical connection between the first and second terminals ( 2, 3 ) and which in an opened state electrically disconnects the first and second terminals ( 2, 3 ), a first electromagnet ( 5 ) which is configured in such a way that it places the contact ( 4 ) in the closed state if the first electromagnet ( 5 ) is switched on, and a second electromagnet ( 6 ) which is configured in such a way that it keeps the contact ( 4 ) in the closed state if the contact ( 4 ) is in the closed state and the second electromagnet ( 6 ) is switched on.

First claim

1 . A relay, having
a first terminal, a second terminal, a contact which in a closed state brings about an electrical connection between the first and second terminals and which in an opened state electrically disconnects the first and second terminals, a first electromagnet which is configured in such a way that it places the contact in the closed state if the first electromagnet is switched on, and a second electromagnet which is configured in such a way that it keeps the contact in the closed state if the contact is in the closed state and the second electromagnet is switched on.

2 . The relay according to claim 1 ,
wherein the second electromagnet is dimensioned in such a way that its magnetic field is strong enough to keep the contact in the closed state, and that its magnetic field is too weak to move the contact from the opened state into the closed state.

3 . The relay according to claim 1 ,
wherein the second electromagnet is also configured in such a way that it keeps the contact in the closed state if the first electromagnet is switched off.

4 . The relay according to claim 1 ,
wherein the relay is configured in such a way that the first electromagnet is switched off as a result of the fact that the contact is moved from the opened state into the closed state.

5 . The relay according to claim 1 ,
having a device which switches off the first electromagnet if the contact is in the closed state.

6 . The relay according to claim 1 ,
wherein the relay has a timer switch which switches off the first electromagnet after a predefined time after the contact has been moved from the opened state into the closed state.

7 . The relay according to claim 1 ,
wherein the first electromagnet is a lifting magnet.

8 . The relay according to claim 1 , wherein the second electromagnet is a holding magnet.

9 . The relay according to claim 1 ,
wherein the relay is configured in such a way that the contact is moved from the closed state into the opened state if the second electromagnet is switched off.

10 . The relay according to claim 1 ,
wherein, the second electromagnet is operated in a switched-on state with a power that is lower than the power with which the first electromagnet is operated in a switched-on state.

11 . The relay according to claim 1 ,
wherein the first electromagnet is configured to generate a magnetic field with a higher field strength than the second electromagnet.

12 . A contactor, having a relay according to claim 1 , wherein the relay is arranged in a gas-filled volume.

13 . A relay, having
a first terminal, a second terminal, a contact which in a closed state brings about an electrical connection between the first and second terminals and which in an opended state electrically disconnects the first and second terminals, a first electromagnet which is configured in such a way that it places the contact in the closed state if the first electromagnet is switched on, and a second electromagnet which is configured in such a way that it keeps the contact in the closed state if the contact is in the closed state and the second electromagnet is switched on, wherein the second electromagnet is a holding magnet and wherein the contact abuts the second electromagnetic in its closed state.

Assignees

• Epcos Ag

Inventors

• Bobert Peter

Classifications

• H01H50/045

  Details particular to contactors (H01H50/042 takes precedence) · CPC title

• H01H47/04 Primary

  for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current {(with switching regulator H01H47/325)} · CPC title

• H01H50/36 Primary

  Stationary parts of magnetic circuit, e.g. yoke · CPC title

• H01H50/86

  Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts (circuit arrangements for introducing delay H01H47/18; short-circuited conducting sleeves, bands, or discs H01H50/46) · CPC title