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1. (US20080198569) Tap changer

Office : United States of America
Application Number: 11994351 Application Date: 28.06.2006
Publication Number: 20080198569 Publication Date: 21.08.2008
Grant Number: 07928329 Grant Date: 19.04.2011
Publication Kind : B2
Prior PCT appl.: Application Number:PCTEP2006063612 ; Publication Number: Click to see the data
IPC:
H01H 19/02
H05K 7/00
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
19
Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
02
Details
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
K
PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
7
Constructional details common to different types of electric apparatus
Applicants: Siemens Aktiengesellschaft
Inventors: Findeisen Jörg
Agents: Greenberg Laurence A.
Stemer Werner H.
Locher Ralph E.
Priority Data: 10 2005 031 359 30.06.2005 DE
Title: (EN) Tap changer
Abstract: front page image
(EN)

A tap changer is filled with an insulating liquid as well as devices for absorbing variations in the volume of the insulating liquid due to thermal conditions. A gas cushion is provided which is integrated into the tap changer vessel and is formed by members that absorb the variations in the volume of the insulating liquid by changing the shape thereof. Furthermore, a gas cushion envelope is provided which prevents the gas of the gas cushion to be mixed with the gases generated by the thermal decomposition of the insulating liquid.


Also published as:
EP1897102CN101233588IN5054/KOLNP/2007WO/2007/003537