Can I Use Current Sensing Transformer Instead of Power Transformer
No, you can not use current transformer to sense voltage. You need a voltage sense transformer, and trying to use current-sense transformer instead will be very bad. Your particular one can have inductance of up to just 8000 microhenries (as opposed to multiple henries power transformers), which means it will dissipate ~150000 watts (and instantly explode) when if you connect it across the mains.

If you are asking these kinds of questions, I highly recommend sticking up to pre-made power adapters and clamp-on current transformers (http://www.digikey.com/product-detail/en/CR3110-3000/582-1004-ND/1045160) which do not require you to mess with exposed high-voltage wiring at all.