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.
It is a cycle.
) {' y" F2 t( q3 w& T; ?
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.

When 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.
, s6 J$ [2 \* \  x: xConfirm 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.

' s- j3 Z$ A! j4 n: ~3 ]( rThe next thing we can think of  is the coil, we took the coil out to have a close look.
) H/ s) T' j5 H0 A8 u. n5 A5 {3 S$ I, 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.
* @$ `0 u9 Q$ [0 V It is getting better  this time, we have 7-8 times of running before it quit working.

The coil should be the problem, we ordered two of them. But it will take 5-6 weeks for us to get them.
7 H% i8 u; w9 e, c. P% `
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

! h, V% l) w$ A/ T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
也想到这一点，不过这是新装的设备。
检查过触点没问题。