Really thankful for so much reference to start with..I will follow the reference you have provided. Is it usual in industries to do the same circuit to connect split core CT that have voltage output type?
No, one in industry would consider doing it that way. It's quite a waste of time and effort, and a really inefficient and expensive solution anyway. One would search for a electrically matching split core CT, or use a "normal" CT and take the effort to open up the circuit to apply the CT, use a clamp-on CT with suitable output (these exist) or use a different meter.
IMO that split core CT is intended to be used as a part of a circuit (meter or whatever) that is developed to match its output. An industrial engineer wouldn't even consider to use such a CT with such a meter, as the CT doesn't adhere to the defacto standard for this application.
If it was my meter and split core CT (e.g. for a one-off project at home), I wouldn't go that route either. I'd open up the meter, analyze the current sensing circuitry (expecting to find either a small value shunt resistor, or a smallish PCB mounted CT) and modify the meter to accept that CT directly.