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DISPLAYING METHOD OF LOWERED GAS PRESSURE OF GAS-BLAST LOAD-BREAK SWITCH AND GAS-BLAST LOAD BREAK SWITCH
DISPLAYING METHOD OF LOWERED GAS PRESSURE OF GAS-BLAST LOAD-BREAK SWITCH AND GAS-BLAST LOAD BREAK SWITCH
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机译：气－高负荷突断开关的低气体压力显示方法及气－高负荷突断开关的显示
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摘要
PROBLEM TO BE SOLVED: To enable preparation for replacement in advance by displaying that a gas-blast load-break switch will be inoperable in the near future when the gas pressure is lowered. ;SOLUTION: When the gas pressure in a case is within a specified pressure range, an engagement adjustment member 23 and an engagement recess 320 of a rotational- movement plate 323 are engaged with each other, and a normal display port 340c can be visualized from a display window. When the gas pressure is lowered, a bellows inflates, the engagement state of the engagement adjustment member 23 and the rotational movement plate 323 is released, the engagement adjustment member 23 passes through a pressure reduction prediction guide part 321 and is engaged with a prediction state engagement part 330, and a prediction display port 340b can be visualized. This indicates that a gas-blast load-break switch will be inoperable in the near future. Therefore, preparation for replacing the gas-blast load-break switch can be done in advance. If the gas pressure is further lowered, the bellows inflates more, the engagement state with the engagement adjustment member 23 and the rotational movement plate 323 is released, the pressure reduction display port can be visualized, and an operation handle is inoperable.;COPYRIGHT: (C)1997,JPO
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