Parameter	Old (Existing) Transformer Details	New Transformer Details	Comments
Phases
Transformer Type
Transformer Rating (kVA)
Primary Voltage (V)
Secondary Voltage (V)
Primary Current (A)
Secondary Current (A)
Vector Group
%Z (Impedance)
Tap Changer Type
Tap Changer Position
Insulation Temperature Class
Cooling Method
Winding Temperature Rise (°C)
Oil Temperature Rise (°C)
Oil Quantity (L)
Untanking Mass (kg)
Total Mass (kg)
Permissible Min/Max Pressure (kPa)
IP Rating
K-Factor
Transformer Termination

Transformer K Factor Rating General Guideline (Reference ANSI/IEEE C57.110 - 2018)
Factor	Description	Harmonics Level
K1	Standard transformer, general purpose, standard lighting, motors without drives	<15% load generates harmonics
K4	Induction heating, SCR drives, AC drives	15-35% load generates harmonics
K13	Institutional electronically controlled lighting, schools, hospitals, etc.	35-75% load generates harmonics
K20	Data processing equipment, computer server loads, critical care facilities and hospital operating rooms	60-100% load generates harmonics
K30	Known loads that are consistently generating harmonics, extra K-factor strength	100% load generates harmonics
K40	Known loads that are consistently generating harmonics, extra K-factor strength	100% load generates harmonics
K50	Known loads that are consistently generating harmonics, extra K-factor strength	100% load generates harmonics