| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a three-phase transformer of which the fitting structure of a thunder resistant element is simplified. <P>SOLUTION: A three-phase transformer 1 for power distribution is equipped with thunder resistant elements A<SB>1</SB>-A<SB>3</SB>of respective phases above a three-phase transformer body 3a stored in a transformer case 2, in the thunder resistant element fitting structure. The thunder resistant elements A<SB>1</SB>-A<SB>3</SB>of respective phases are arranged with a power supply side lead wire 22 led out, parallel to the leading-out direction of a high voltage side lead wire 21 of a high voltage bushing 20 of each phase, near the lower side of the transformer case 2 where the high voltage bushing 20 of respective phases is fitted. The high voltage side lead wires 21 of the high voltage bushing 20 of respective phases and the power supply side lead wires 22 of thunder resistant elements A<SB>1</SB>-A<SB>3</SB>of respective phases are connected to a high voltage receiving terminal 15 of a tap board 13 installed in the upper part of the three-phase transformer body 3a. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
