Forget the voltage and transformer, this raises another serious red flag...
Chillers are most often centrifugal machines. 380V implies it came from overseas, which would most likely mean it was designed for 50Hz. if you are connecting it in Tujunga, CA. (per your profile) or anywhere in North America, the frequency will be 60Hz. Your centrifugal chiller will run 20% faster than it was designed for. Because of the Affinity Law of centrifugal machine power being the cube of the speed change, the power that the machine will require at the increased speed will be 173% of what it required as designed (1.2 x 1.2 x 1.2). Your motors will not be able to handle that...