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US 6,646,861 B1Granted
Gas insulated switchgear
AssigneeHitachi, Ltd.
InventorsHiroyasu Watanabe, Rei Henmi, Ryouichi Shinohara, Ryouichi Mitsugi, Shunji Ito
Life of this patent
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Abstract
In a gas-insulated switching device capable of reducing the physical installation space while suppressing the installation height of the device, busbar connecting lines are disposed perpendicularly to and between as pair of main busbars to connect the main busbars. Three sets (one set per phase) of three serially connected horizontal broker units are placed in parallel, and each of the main busbars has three busbar units along a portion extending vertically from the end of the busbar connecting line.
Claims11
A gas-insulated switching device comprising:
- a pair of main busbars which are disposed in parallel to each other,
- three-phase busbar connecting lines which are disposed perpendicularly to and between said main busbars for connection;
- and
- leader lines which are connected to said busbar connecting lines,
- wherein said busbar connecting lines are arranged along said main busbar and each phase thereof comprises horizontal breaker units serially connected to each other through breaker connecting units in a straight line,
- each of said main busbars has three busbar units arranged in parallel to each other and vertically along busbar connecting units which stand upright,
- two of said leader lines are led out from one of said breaker connecting units, and
- one of said two leader lines has a connecting busbar unit constituting said one leader line, said connecting busbar unit being led out horizontally from said one breaker connecting unit toward one side of a connecting busbar unit constituting the other of said two leader lines so as to be slantwise to an extending direction of said main busbars.
5 more elements
A gas-insulated switching device comprising
- a pair of main busbars which are disposed in parallel to each other,
- busbar connecting lines which are disposed perpendicularly to and between said main busbars for connection, and
- leader lines which are connected to said busbar connecting lines,
- wherein said busbar connecting lines comprise three horizontal breaker units connected through breaker connecting units in a straight line,
- each of said main busbars has three busbar units along busbar connecting units which stand upright,
- two of said leader lines are led out downward from one or said breaker connecting units, and
- one of said two leader lines has a connecting busbar unit constituting said one leader line, a first portion of said connecting busbar unit being parallel to said main busbars, and a second portion of said connecting busbar unit extending perpendicularly to an opposite direction between said main busbars opposite to each other from said first portion.
4 more elements
A gas-insulated switching device comprising
- a pair of main busbar arranged in parallel to each other,
- three-phase busbar connecting lines disposed perpendicularly to and between said main busbars and connecting between said main busbars, and
- leader lines connected to said busbar connecting lines,
- wherein said busbar connecting lines for three phases are arranged along said main busbars and each comprise three horizontal breaker units serially connected to each other through breaker connecting units in a straight lines,
- each of said main busbars has three busbar units arranged in parallel to each other and vertically along busbar connecting units which stand upright,
- said leader lines each comprises a connecting busbar unit, a current transformer unit and a bushing, and
- said leader lines are formed so that one end of said connecting busbar unit is connected to a cross-shaped branch type tank constituting a horizontal portion of one of said breaker connecting units through said current transformer unit, the other end of said connecting busbar unit is connected to said bushing and a portion between said one end and said other end of said connecting busbar unit is extended upright from said one end thereof, bent toward one of said main busbars and horizontally extended from the bent portion to said bushing.
4 more elements
Dependencies are inferred from the claim text.