My company is entering a joint venture to manufacture CT's and I need some basic info on how they are manufactured and the different specs. Any websites or research documents anyone can provide would be appreciated.
Suggestion: CTs are rather special type of transformers. There are some documents pertaining to their applications and testing, e.g.
ANSI/IEEE Std C57.13-1978 "An American National Standard IEEE Standard Requirements for Instrument Transformers" that has additinal references included inside.
Also, try