| 摘要 |
<p>PURPOSE: To bring first, second and third contacts into contact with fixed contacts on the corresponding sides respectively by sliding first and second movable contacts by first and second driving levers rotated by the revolution of a shaft. CONSTITUTION: The places of engaging pins 33, 34 fixed on the other end sides of first and second driving levers 31, 32 respectively are moved by rotating a three-phase collective insulated rod 17, and first and second movable contacts 24, 29, to which can grooves 25, 30 engaged with these each engaging pin 33, 34 are formed respectively, are shifted, thus successively bringing first, second and third contacts into contact with corresponding arrester-side fixed contact 20, bushing-side fixed contact 21 for a breakdown strength test and a bus-side fixed contact 27 for distribution respectively. Accordingly, detaching having excellent operationability is made possible by simple structure, and a factory breakdown-strength test and a field cable breakdown-strength test can be executed without conducting gas treatment work at the time of the test.</p> |
