In a Existing industrial setup, there is a 33kV HT Panel feeding one Transformer, Due to expansion, we need to install one more 2500kVA Trasformer and 33KV HT Panel, can I fed the new HT Panel through existing HT Cable by looping both the HT panels with same HT cable...
Is it possible and safe??

This site is a DYI "Residential" forum.

For this type of work you need to be consulting with an Electrical Engineer. What country are you in?

If you have to ask, you shouldn't be doing this work. As donf said, this is a DIY forum. Clearly this isn't the type of topics covered here. Consult a licensed, capable professional to do this work.