| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-road installed type transformer device which can significantly simplify preparing work and ending work in inspecting a PT (instrument transformer) and a CT (instrument current transformer). SOLUTION: The on-road installed type transformer device includes a three-phase switch 11, a power fuse 12 constituted of three-phase portion and a power transformer 13 filled with an insulating oil 13b and is accommodated in an outer box 14. The instrument transformer 18 and the instrument current transformer 19 for measuring power amount is provided in the insulating oil on the high-voltage side of the power transformer. An inspection voltage applying terminal for a current transformer 13d is mounted to the transformer case 13c, while being inserted therethrough, An inspection use three-phase changeover switch 23 is provided, for switching among: a state where a load-side fixed electrode 15a3 is connected to the high-voltage side coil 13d1 of the power transformer at normal times; a state where the load-side fixed electrode is disconnected from the high-voltage side coil of the power transformer at inspecting the instrument transformer 18; and a state where the load-side fixed electrode is connected to the inspection voltage applying terminal for the current transformer at inspecting the instrument current transformer 19. COPYRIGHT: (C)2009,JPO&INPIT
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