US 8,497,446 B1Granted

Encapsulated vacuum interrupter with grounded end cup and drive rod

OwnerMichael David Glaserinventor

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Abstract

An encapsulated vacuum interrupter with grounded end cup and drive rod is disclosed. The double break vacuum interrupter includes a first contact system including an annular stationary contact which is engaged by a primary moving contact with the moving contact drive rod extending through the primary moving contact and through the opening of the annular stationary contact. A second contact system includes a secondary moving contact placed on the end of the moving contact rod, which engages and operates a floating contact, which moves along the same axis. A mechanical adjustment system is provided for the floating contact. A coaxial moving contact drive rod system is provided. With the encapsulated vacuum interrupter, the lower portion of the vacuum envelope is insulated from the current path, which allows for the elimination of the long internal cavity in the encapsulation as the lower end cup of the vacuum envelope may be grounded.

Claims19

Dependent claims

A double break vacuum interrupter comprising:

a vacuum enclosure having a first end and a second end, said second end is opposite to said first end;
a first contact system includes a moving contact and a stationary contact, said stationary contact is retained inside said vacuum enclosure at substantially said first end thereof;
a second contact system includes a moving contact rod, a floating contact rod and a biasing means, said floating contact rod having a first rod end and a second rod end, said second rod end is opposite to said first rod end, said floating contact rod is slidably retained at said second end of said vacuum enclosure, said biasing means is retained on said second end of said vacuum enclosure, substantially said first rod end of said floating contact rod is retained by said biasing means, said second rod end of said floating contact rod is biased toward said first end of said vacuum enclosure, said moving contact is retained on one end of said moving contact rod, the other end of said moving contact rod is electrical isolated from said moving contact, the other end of said moving contact rod is grounded;
and
an actuator is retained at a bottom of said double break vacuum interrupter and attached to said moving contact rod.

2 more elements

A double break vacuum interrupter comprising:

a vacuum enclosure includes a first insulating cylinder and a second insulating cylinder, said first insulating cylinder is terminated with a first end cup, said vacuum enclosure having a first end and a second end, said second end is opposite to said first end;
a first contact system includes a moving contact and a stationary contact, said stationary contact is located inside said first insulating cylinder;
and
a second contact system includes a moving contact rod, a floating contact rod and a biasing means, said floating contact rod having a first rod end and a second rod end, said second rod end is opposite to said first rod end, said floating contact rod is slidably retained in said second insulating cylinder, said biasing means is retained on said second end of said vacuum enclosure, substantially said first rod end of said floating contact rod is retained by said biasing means, said second rod end of said floating contact rod is biased toward said first end of said vacuum enclosure, said moving contact is retained on one end of said moving contact rod, the other end of said moving contact rod is electrical isolated from said moving contact, said first end cup is grounded and the other end of said moving contact rod;
and
an actuator is retained at a bottom of said double break vacuum interrupter and attached to said moving contact rod.

3 more elements

A double break vacuum interrupter comprising:

a vacuum enclosure having a first end and a second end, said second end is opposite to said first end;
a first contact system includes a moving contact and a stationary contact, said stationary contact is retained inside said vacuum enclosure at substantially said first end thereof;
a second contact system includes a moving contact rod, a floating contact rod and a biasing means, said floating contact rod having a first rod end and a second rod end, said second rod end is opposite to said first rod end, said floating contact rod is slidably retained at said second end of said vacuum enclosure, said biasing means is retained on said second of said vacuum enclosure, substantially said first rod end of said floating contact rod is retained by said biasing means, said second rod end of said floating contact rod is biased toward said first end of said vacuum enclosure, said moving contact is retained on one end of said moving contact rod, the other end of said moving contact rod is electrical isolated from said moving contact, the other end of said moving contact rod is grounded;
and
a capacitor-resistor voltage divider is connected in series between said one end of said moving contact rod and the other end of said moving contact rod.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/196,046Filed 2 Aug 2011 · continuation in part
Priority: 24 Jan 2011
Granted: 30 Jul 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01H 33/666
Vacuum switches: operating arrangements
H01H 33/143
Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc: of different construction or type
H01H 33/664
Vacuum switches: contacts; Arc-extinguishing means, e.g. arcing rings
H01H 33/16
Means for extinguishing or preventing arc between current-carrying parts: impedances connected with contacts