US 11,515,109 B2Granted

High voltage disconnector

AssigneeHitachi Energy Switzerland AG

InventorsEnnio Errico, Matteo Calamari, Roberto Fabbi

Life of this patent

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Abstract

A high voltage disconnection unit includes a fixed contact assembly having at least a first fixed main contact and a first fixed auxiliary contact, a movable contact assembly having at least a first movable main contact and a first movable auxiliary contact that rotate with respect to the first fixed main contact and first fixed auxiliary contact from a contacts closed position to a contacts open position. During an opening operation of the disconnection unit the separation of the first movable main contact from the first fixed main contact takes place before the separation of the first movable auxiliary contact from the first fixed auxiliary contact. The relative opening speed V1 between the first movable auxiliary contact and the first fixed auxiliary contact is greater than the relative opening speed V2 between the first movable main contact and the first fixed main contact.

Claims19

Dependent claims

A high voltage disconnection unit comprising:

a fixed contact assembly having at least a first fixed main contact and a first fixed auxiliary contact, and
a movable contact assembly having at least a first movable main contact and a first movable auxiliary contact that rotate with respect to the first fixed main contact and the first fixed auxiliary contact from a closed position to an open position, wherein the first movable main contact comprises a plurality of contact strips operatively couplable to the fixed contact assembly for providing a current path when the high voltage disconnection unit is in the closed position;
wherein during an opening operation of the high voltage disconnection unit, separation of the first movable main contact from the first fixed main contact takes place before separation of the first movable auxiliary contact from the first fixed auxiliary contact;
and
wherein a relative auxiliary opening speed between the first movable auxiliary contact and the first fixed auxiliary contact is greater than a relative main opening speed between the first movable main contact and the first fixed main contact.

2 more elements

A high voltage disconnection unit comprising:

a fixed contact assembly;
a movable contact assembly;
the fixed contact assembly comprising a first fixed main contact and a first fixed auxiliary contact;
the movable contact assembly comprising a first movable main contact and a first movable auxiliary contact;
and
the first movable main contact and the first movable auxiliary contact being respectively rotatable with respect to the first fixed main contact and the first fixed auxiliary contact in between a closed position and an open position, wherein the first movable main contact comprises a plurality of contact strips operatively couplable to the fixed contact assembly for providing a current path when the high voltage disconnection unit is in the closed position.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/973,073Filed 5 Jun 2019
Priority: EP 181767318 Jun 2018
Published: US 2021/0249207 A112 Aug 2021
Granted: 29 Nov 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H01H 33/123
Load break switches: in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement
H01H 33/64
Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of…: wherein the…
H01H 1/42
By sliding: knife-and-clip contacts
H01H 33/127
Comprising a separate circuit breaker: movable with a sectionalising contact arm and operated by such movement