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Title:
STATIONARY INDUCTION APPARATUS WITH ON-LOADING TAP SWITCH
Document Type and Number:
Japanese Patent JP2009026949
Kind Code:
A
Abstract:

To provide a stationary induction apparatus which has superior fire preventiveness and long-period operation stability and is equipped with an on-loading tap switch.

The stationary induction apparatus with the on-loading tap switch is equipped with a tank, an electromagnetic induction equipment put in the tank together with a liquid insulator whose flash point exceeds 250C and the in-loading tap switch which controls the voltage of the electromagnetic induction equipment, wherein the in-loading tap switch has a changeover opening/closing device and a tap selector, and silicone liquid to which specified polyol ester whose flash point exceeds 250C is added is charged at least as the insulating medium of the tap selector.


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Inventors:
MOROOKA HISASHI
YAMAGISHI AKIRA
SHIRASAKA YUKIYASU
SANPEI HIROYUKI
WASHIYAMA TAKEKI
Application Number:
JP2007188411A
Publication Date:
February 05, 2009
Filing Date:
July 19, 2007
Export Citation:
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Assignee:
HITACHI LTD
JAPAN AE POWER SYSTEMS CORP
International Classes:
H01F29/04
Domestic Patent References:
JP2004273291A2004-09-30
JPH088012B21996-01-29
JPH01205407A1989-08-17
JP2006114615A2006-04-27
JPH04211499A1992-08-03
Foreign References:
WO2005118756A12005-12-15
Attorney, Agent or Firm:
Polaire Patent Business Corporation



 
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