It's not a document,it comes from a short article about Thai Army's Oplot-T and VT-4 on Weibo,all data based on unclassified information
The author speculated the turret can provide about 600mm vs KE and 630mm vs CE without ERA based on these two article
http://btvt.info/1inservice/t-80ud/t-80ud.htm
http://btvt.info/1inservice/t-80u.htm
ERA protection capability comes from this article
http://btvt.info/3attackdefensemobility/duplet.htm
The values are for reference only,but I think Oplot-M is too easy to be penetrated in the game even Russian tank is using new ammo like svinets-1/2