| 摘要 |
PURPOSE:To perform safety measurement of a bad insulator, by successively moving a measuring instrument between strain insulators by manipulating an expansible type insulated manipulating rod attached to the main body of the measuring instrument to measure the strength of the electric field of the insulator. CONSTITUTION:The main body B of a measuring instrument having an expansible type insulated manipulating rod C is placed on a strain insulator A and the rotary parallel drum 8 of the main body B is rotated by manipulating the manipulating rod C to rotate the main body B on the insulator A while a slip-off wheel 9 is slipped off between the insulators at the insulator interval and a contact electrode 10 is contacted with the metal fittings of the insulator A to keep the measuring position thereof. The voltage dividing device 30 of the main body B is rotated left and right by rotating the manipulating rod C left and right in this state and measuring electrodes 34, 35 provided thereto are contacted with the metal flat plate 10a of the electrode 10 to enable measurement while voltage is displayed by an electricity/light converting measuring instrument 60 through an optical fiber 50 to carry out measurement. By this constitution, the measuring instrument can be easily moved on the strain insulator at the high place of a pylon and safe measurement is enabled. |
