Tap changer
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United States of America Patent
Stats
-
Nov 24, 2009
Grant Date -
Jul 17, 2008
app pub date -
Nov 17, 2005
filing date -
Mar 1, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tap changer has an insulating housing and a plurality of annular arrays of contacts fixed in the housing. A vertical switching shaft in the housing carries contacts positioned to engage the fixed contacts of the respective array on rotation of the shaft. A tap-changer head closes an upper end of the housing, and a head flange above the tap-changer head is formed with threaded fastening bores. A geneva transmission on the tap-changer head has an output connected to the shaft and an input shaft projecting vertically upward from the head into the head flange. An upper transmission stage boltable to the bores on the head flange is connectable to the input shaft. A handwheel drive has a flange with an upper cover through which the input shaft extends and a handwheel or hex fitting on an upper end of the input shaft.
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