Description: AUGMENTATION OF ELECTRICAL INFRASTRUCTURE IN SMQ AREA AT AF STN JAMNAGAR PH II NAME OF WORK AUGMENTATION OF ELECTRICAL INFRASTRUCTURE IN SMQ AREA AT AF STN JAMNAGAR PHASE II Rev1 dtd 160923
Details: Supply, installation, testing & commissioning of transformer of capacity 500 KVA step down outdoor type copper wounded complete with standard fittings HT 11 KV 3 phase, LT 433 volts 3 phase 4 wire (at no load) AC 3 phase 50HZ with off load tapping, oil immersed naturally air cooled (ONAN COOLED) with external cooling tubes /radiator , laminated core type delta connected on primary side and star connected on LV side in accordance with vector symbol DY-11 (vector group 4) with neutral brought out on secondary side and having tapping on HV side to vary secondary voltage within limited range upto (±) 7.5% in step of (+) 2.5% and impedance 4.5%. Tap position to be changed by hand operated OFF LOAD tap changing gear. The maximum temperature rise should not exceed 45 degree centigrade in oil and 50 degree centigrade in HV/ LV winding when measured by the resistance method after continuous full load run in ambient temperature the transformer shall confirming to IS 1180 Part I 2014 ; Level
Sector: Defense