| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a transformer for a gas insulated instrument, which can perform a field withstand voltage test per phase unit without gas treatment. <P>SOLUTION: A transformer for a gas insulated instrument comprises: a first stationary contact 13 placed on a primary winding 12 of an instrument transformer VT; an earth terminal 23, electrically-insulated from a metal container 10, extending from the inside to the outside of the metal container 10; a second stationary contact 14 placed at the end part of the earth terminal 23 in an internal side of the metal container 10; a movable blade 16 extending radially from the axial center of a driving axis; a disconnecting unit 1 connected to a gas insulated switchgear, which includes the movable blade 16 that is configured to be connected to and separated from the first stationary contact 13 and the second stationary contact 14; and an operating section, for rotating a free end of the movable blade 16, which is placed at an end of an insulation operating rod 18, for three phases respectively. <P>COPYRIGHT: (C)2012,JPO&INPIT |
