| 摘要 |
1293369 Gas blast switches WESTING- HOUSE ELECTRIC CORP 10 Nov 1969 [9 Dec 1968] 54839/69 Heading H1N A gas blast switch is arranged in a substantially U-shaped housing consisting of a grounded lower portion 26 and two arms 15, 28 each having an insulating weatherproof casing, one arm containing a circuit interrupter and the other arm containing either a terminal or a second circuit interrupter, the or each casing containing an interrupter having an inner insulating tube 18 and the space between casing 22 and tube 18 being filled with gas at a pressure intermediate the high pressure gas used for gas blast and the atmosphere. The interrupter (Figs. 7, 8, not shown) and its fluid operator (Fig. 6, not shown) are substantially as described in Specifications 1,261,289 and 1,293,607, respectively. The gas employed is SF 6 . |
