The Delhi duo of Rashid Khan and Vinod Kumar along with Om Prakash Chouhan of Mhow are tied in second place with matching totals of nine-under-205.
Perera (65-72-67), who was overnight tied second, had his first success of the day on the fourth hole where he made a putt from 50 yards for birdie.
The 26-year-old made steady progress through the day as he birdied the eighth and 12th as well. He sank a 10-footer on the eighth and then found the green in two shots on the par-5 12th that set up a two-putt for birdie.
Perera, a two-time winner on the PGTI, surged with a birdie on the closing 18th where he landed his second shot from 130 yards to within five feet of the flag.
He thus ended the day with a 67 to raise his title hopes.
Rashid Khan