Any input on Cutler-Hammer Starter?

td456

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Two  cutler –hammer advantage  starters are  doing the same thing:
After start 2-3 times, they will quit working, if you toggle the  start and stop buttons on DCS screen  , you will get another 2-3 running before they quit working again.
It is a cycle.

We isolate the network control and use the local start and stop only, the problem remains.
Swap one of the defective buckets with a good one, the new bucket works fine.
The problem should be inside the bucket.
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4 |: c. n& Q" x$ w1 T4 ]1 MWhen the problem happened, we observed that  the contactor has a pulling action but will not seal.
Use a terminating screw divers to push in the contactor, it will not seal either.
Confirm with TECH support this should be a problem with the control circuit board inside the advantage starter, we  bought two new control circuit boards and replaced the old ones, the problem is still the same.
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) ^. U, B% h& @' ?The next thing we can think of  is the coil, we took the coil out to have a close look.
; @! u. ]3 C" B. @: pThey  have a fork to pinch inside the two leads to make connection, it is not a good design at all. We soldered  the connection and tried again.
8 H% z# X) h9 i- W It is getting better  this time, we have 7-8 times of running before it quit working.

# ]; _# S, z- T+ NThe coil should be the problem, we ordered two of them. But it will take 5-6 weeks for us to get them.
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Do you guys have any input on this issue?

侠客行

有时候主接触点太脏，也会造成启动器无法正常工作

贾电工

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! c4 |+ \9 f4 ]中国人在这里最好说中国话！说英语或想学英语请人到洋人论坛！

homestay

Don't know cutler –hammer advantage  starters very well, but had been worked on AB switch gears for a little while, which has two different coils, one to pull the vacum bottles up which employs larger current, another one uses less current to hold the connection---if the second coil fails, it won't be able to seal the connection.
  Z+ o- [0 N$ S+ s& Q% ^. M' l* JSince your cutler -hammer works couple times,  I guess 侠客行 is right, or the sealing connection is just worn out.

td456

2# 侠客行
也想到这一点，不过这是新装的设备。
1 E* f4 O0 K0 @$ Q4 F: T& Q检查过触点没问题。