AMF CONTACT FOR VACUUM INTERRUPTER WITH INFORCEMENT ELEMENT

摘要

An AMF contact for a vacuum interrupter includes concentric opposing contact pieces. The contact pieces include an external electrode shaped like a coil with a plate as a bottom plate of the external electrode, which generates a strong axial magnetic field, and an inner internal electrode as a top electrode carrying the nominal current. To enable the outer electrode to generate the axial magnetic field as requested for an application, a rod is arranged between the top electrode and the bottom plate. A first end of the rod is fixed at a lower side of the top electrode, and a second end of the rod is guided through an opening of the bottom plate. The second end of the rod has an extended head which locks or tightens the rod in a defined axial position. The disclosed embodiments are applicable for standard AMF or TMF (cup) contacts to reinforce them.

主权项

1. An AMF contact for a vacuum interrupter, the AMF contact comprising: concentric opposing contact pieces, the contact pieces including
an external electrode shaped like a coil with a plate constituting a bottom plate of the external electrode, the external electrode being configured to generate a strong axial magnetic field, and an inner internal electrode as a top electrode configured to carry a nominal current of the vacuum interrupter; a rod arranged between the top electrode and the bottom plate, wherein a first end is fixed at a lower side of the top electrode, and a second end of the rod, which is opposite the first end of the rod, is guided through an opening of the bottom plate, and wherein at the second end of the rod, the rod has an extended head, which is configured to at least one of lock and tighten the rod in a defined axial position.