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goshen
03-07-2012, 07:59 PM
Hi
would anyone know what type of ct ratio is needed for the ISM for a 1000 tr unit?
the motor is 1070 amp, the starter is a external one not supplied by carrier or benshaw !!
thx
:(

install monkey
03-07-2012, 10:43 PM
http://www.mediafire.com/view/?anh57a3mjgchmx5
install operation manual if it helps

goshen
04-07-2012, 05:51 AM
Hi IM
thx for your reply ,i have all the manuals ,this problem is trickey,carrier reps had no answer! and if i wait for them i probably should buy a new unit !!

james10
04-07-2012, 01:04 PM
Do you have Manual 19XR-6SS?

Motor CurrentCT Ratio
ISM_CONF — Enter ratio (reduced to a ratio to1) of current transformers wired to terminal J4 ofISM. This value shall always be “100” for BenshawRediStart MX3 wye-delta and solid-statestarters.

goshen
04-07-2012, 02:01 PM
Hi
thx for your reply ,i indeed have his manual ,i am not using a benshaw starter,i am using an external starter with the ism installed inside,so the ct's connect directly to it ,
so that is my problem !!

goshen
04-07-2012, 02:18 PM
thx for your reply ,i indeed have his manual ,i am not using a benshaw starter,i am using an external starter with the ism installed inside,so the ct's connect directly to it ,<br>so that is my problem !!<br></strong></span>