| 摘要 |
<p>The present disclosure relates to a high voltage gas circuit breaker, and particularly, to a high voltage gas circuit breaker capable of enhancing a breaking performance and durability by controlling a volume of an expansion chamber by a pressing member. A high voltage gas circuit breaker, comprises: a fixed unit including a fixed arc contactor (20) and a fixed contactor (25); and a movable unit including a movable arc contactor (30) and a movable contactor (35), and configured to selectively contact or be separated from the fixed unit, and wherein the movable unit comprises: a fixed cylinder (40); a compression cylinder (45) slidably-installed in the fixed cylinder; a movable rod (50) penetratingly-coupled to the compression cylinder, and configured to transmit an adjusting force of an operator; a pressing member (55) installed on an inner bottom part of the compression cylinder (45); and a compression plate (56) supported by the pressing member (55), and up-down moving in the compression cylinder by a pressure of an expansion chamber (A).</p> |
