求翻译：现场测试过程中，最初接触器吸合都很正常，大约在分、合20次时，接触器有一次吸合后又立刻弹开，随后上电又正常是什么意思？

Field testing process, initially contactor is normal, around the points, or 20 times, contact a pull and then immediately bounce, then power on normal

On-site during the test, the initial contactor closed are all normal, about 20 minutes, with time, the contactor is closed after a time he immediately popped open, and then power up again properly

In the scene test process, the initial contact device attracts gathers very is all normal, probably when the minute, gathers 20 times, after the contact device has one time attracts gathers the ball to start immediately, on afterwards the electricity also is normal

During the field test, the initial contact was normal, in minutes, about 20 times, immediately after contact with a snap-pop open, then power on properly

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