Any input on Cutler-Hammer Starter?

td456

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.
$ h- Z1 L7 E8 z# MIt is a cycle.

2 H8 @. O4 ~, N" @! }6 n: h# aWe 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.
$ i# V( t1 C: J9 J  V4 c/ H( g7 Z' hThe problem should be inside the bucket.
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- d  k1 s8 m$ ^5 o& VWhen the problem happened, we observed that  the contactor has a pulling action but will not seal.
4 R( l+ n# L; {$ n3 Q4 A2 XUse a terminating screw divers to push in the contactor, it will not seal either.
$ n3 x8 q$ V3 N' QConfirm 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.

8 Y# c# E2 r( DThe next thing we can think of  is the coil, we took the coil out to have a close look.
They  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.
It is getting better  this time, we have 7-8 times of running before it quit working.
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The 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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% e9 ?+ E4 q5 }! t. y* xDo 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

8 U: ]3 w# Y2 i* K( \
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
% v1 b3 O* c6 q也想到这一点，不过这是新装的设备。
检查过触点没问题。