Any input on Cutler-Hammer Starter?

td456

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, r2 l$ M( e+ G$ }8 W0 mTwo  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.
- T1 t& z" u8 L7 Y# JIt is a cycle.
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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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0 C- e4 n9 f; [8 t! V  u8 l, bWhen 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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The next thing we can think of  is the coil, we took the coil out to have a close look.
" K; q8 p6 L# g& RThey  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 n( i. ^# Y5 W" ^/ o0 e1 R It is getting better  this time, we have 7-8 times of running before it quit working.
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/ W' f3 q( C9 D5 W1 O6 tThe 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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" D. d, f6 v% b2 t1 F) ]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

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.
Since 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
+ M* X( f5 n5 P3 M2 L9 g$ r" A# g也想到这一点，不过这是新装的设备。
- R4 F' v- L6 x5 e2 a; ?. I6 G检查过触点没问题。