US 8,471,166 B1 · Double break vacuum interrupter

Abstract

A double break vacuum interrupter includes a first contact system with an annular stationary contact, which is engaged by a primary moving contact with the moving contact 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 disposed on an end of the moving contact rod, which engages and operates a floating contact on the same axis. Both contact systems are enclosed in a sealed envelope. A mechanical adjustment system is provided for the floating contact, which controls its range of motion. The mechanical adjustment system allows the first and second contact systems to engage at approximately the same time. A system of capacitors and resistors is provided to balance the voltage between the first and second contact systems to provide more efficient interruption of the electric current.

Claims20

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;
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 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 said moving contact rod, wherein said first and second contact systems close at substantially the same time.

1 more element

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;
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 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 said moving contact rod, wherein said first and second contact systems close at substantially the same time;
and
a capacitor-resistor voltage divider is connected in series with said moving contact rod to distribute voltage equally between said first and second contact systems during interruption of electrical current flow, wherein said first and second contact systems close at substantially the same time.

3 more elements

Dependencies are inferred from the claim text.

Double break vacuum interrupter

Life of this patent

Double break vacuum interrupter

Life of this patent

Abstract

Claims20