selection of CT | Miscellaneous › Others › selection of CT This topic has 1 reply, 2 voices, and was last updated 9 years, 9 months ago by Dheeraj Kumar. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts November 9, 2013 at 11:19 am #2700 ashwiniParticipant Hello, windmill gives 600KW output power at 690v,so that it produces 628.29A current.then how i select CT i.e. which CT ratio is suitable December 19, 2013 at 12:07 pm #10746 Dheeraj KumarParticipant Current Transformers Turns Ration=Secondary Current/Primary current so you were asking to find ct ratio…. Here Primary Current for CT Will be 628.29A but there is no way to find CT Ratio without knowing Secondary Current of CT Insufficient Data Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In