250 KVA DISTRIBUTION TRANSFORMER
Capacity in kVA | 250 KVA |
Winding material | Electrolytic Copper |
Efficiency Level | Level 1 |
Losses at 50% Load | 980 W |
Losses at 100% Load | 2930 W |
No. of Phases | 3 Phase |
HV Voltage | 11,000 V |
LV Voltage | 433 V |
Cooling | ONAN (Oil Natural Air Natural) |
Reference Standards | IS:1180 Part 1 (2014) |
Frequency | 50 Hz |
Vector Group | DYn 11 |
Method of Connection : HV/LV | Delta/ Star |
Tapping | Off Load Type (OCTC) |
Tap Changer Range | +5% to -5% |
Steps/Positions/ Step Range | 4 Steps/ 5 Positions/ 2.5% |
Make of Conductor | Hindalco Birla make or equivelant |
Type of HV Conductor | DPC Insulated Round Wire |
Type of LV Conductor | DPC Insulated Rectangular Strip |
Cooling | ONAN |
Max. Ambient temperature | 50º C |
Temperature Rise Oil | 40º C |
Temperature Rise Winding | 45º C |
Brand of Kraft Paper used | ITC |
Transformer Oil Specification | As per IS: 335-1983 |
Transformer Oil Make | Savita / Apar /divyol/gandhar (Directly Imported) |
Core Type | CRGO (0.23/0.27 mm) Laser Grade |
Make of Core CRGO | POSCO/ Thyssen / NLMK |
Impedance | 4.50% subject to tolerance as per ISS |
Stationing Type | Indoor/Outdoor |
Class of Insulation | Class A |
Power Frequency/ Lighting Impulse | 28 kV/ 95 kV |
Paint Outdoor/ Indoor | PU Paint/ HOR Paint |
