"During the transmission, the equipment was taken to a training ground, where test flights were conducted, involving real aerial targets escort. Acceptance tests have been passed successfully", Almaz-Antey said in a statement.
The acceptance ceremony was held on Sunday in the country's southern Astrakhan region.
The S-350 Vityaz is designed to repel massive attacks by modern and prospective air attack weapons. It has a maximum range up to 120 km (around 75 miles) and can hit up to 12 targets on the altitude of 30 km (around 18.5 miles).