Over current protection device: when the sample breakdown in the 0.1s cutoff the power.
过电流保护装置：试样击穿时在0.1 S内切断电源。
2
Guide vanes have inhibiting device, and the guide vane which has been cutoff will not spin in order to avoid collisions with other guide vanes.
导叶设有限位装置，剪断销剪断的导叶不能随意转动，避免与其他导叶碰撞。
3
In order to reduce the power cutoff which caused by electric shock accident and earth-fault power cutoff, it must install residual current operated protective device.