| 摘要 |
PROBLEM TO BE SOLVED: To provide a trip device capable of performing two functions such as calibration of long term delay and disconnection of voltage measurement by a simple and reliable method. SOLUTION: This trip device has a removable module 3 to determine a long term delay parameter, which is designed so as to be fixed to the front panel 2 of the trip device. The removable module 3 applies a pressure on a movable component 13 through an auxiliary component 16 at its fixed position and moves the movable component to a position where the processing circuit of the trip device is connected by voltage to a conductor in a power system to be protected. The movable component 13 is pressed to a cutting position by a spring 15. The component 13 can be rotated or paralleled.
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