SUMMARY
Load calculations for transformers involve determining the maximum current based on the transformer's kVA rating and the line voltage. In this discussion, a 44kV line is distributed using eight transformers rated at 3750kVA, 2500kVA, and 1500kVA. The maximum primary current for a 3750kVA transformer is calculated as 49.2 amps per phase using the formula 3750 / (44 / SQRT(3)) / 3. Load distribution among transformers is influenced by their rated power and impedance voltage, with further details available in Transformer Riddle No. 27.
PREREQUISITES
- Understanding of kVA and its calculation (kVA = volts x amps)
- Knowledge of three-phase electrical systems
- Familiarity with transformer impedance voltage
- Basic electrical engineering principles
NEXT STEPS
- Study the calculation of maximum current for different transformer ratings
- Learn about three-phase power distribution systems
- Explore transformer impedance and its impact on load distribution
- Review Transformer Riddle No. 27 for detailed load calculation examples
USEFUL FOR
Electrical engineers, power system designers, and technicians involved in transformer load calculations and distribution systems.