The foil unfolding time relay device has the advantages of reducing the movement of the electrode foil, decreasing the abrasion of the electrode foil, and increasing the whole precision.
本实用新型具有降低电极 箔的游动，减小电极箔的磨损，提高整体精度的优点。
That is, when the line failure, the relay circuit breaker tripping, the device auto-reclosing after a short time interval, so that a re-breaker.
即当线路出现故障，继电保护使断路器跳闸后，自动重合闸装置经短时间间隔后使断路器重新合上。
Using time relay type electronic drainage device emissions every 2 minutes: open a, an average of about 2 seconds leak compressed air every day, the leakage of time.
采用时间继电器式电子排水器排放：每2分钟开一次，平均约2秒泄露压缩空气，每天的泄露时间。
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