With non power failure test possible ground protected machine attaching high tension air break switch

摘要

Topic With non power failure, join test of the ground protected machine attaching high tension air break switch to be cheap to the utmost, furthermore, try to be able to make the time measurement of join test accurate.SolutionsHigh tension air break switch 10 makes normally closed, bypass switch 30 makes normally open. When doing join test, it tests with bypass switch 30 as a closing, but high tension air break switch 10 load side does not have a power failure with test to an open. When test ends, with high tension air break switch 10 as closing after manipulation ends with bypass switch 30 as an open. Because as for bypass switch 30, as for opening and closing high tension electric current it is not, if there is an electrification function, it can produce well economically cheaply. Choice figure Drawing 4