carrier 19xr pic2

[goshen]

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]

http://www.mediafire.com/view/?anh57a3mjgchmx5
install operation manual if it helps

[goshen]

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]

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]

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]

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>