Engineering Tool
Data Center Sizing Calculator
Calculate required transformer capacity for mission-critical IT facilities based on active IT rack load, UPS conversion efficiency, CRAC/CRAH HVAC cooling, 2N/N+1 redundancy targets, and K-13 harmonic derating.
Load Parameters
Please enter valid power values.
Results will appear here
Enter your data center parameters and click Calculate
Calculated Load
kVA
Recommended Size
kVA (Cast Resin)
Calculation Breakdown
Suggested Transformer Type
Cast Resin Dry-Type Transformer (Class H 180°C)
F1 fire self-extinguishing safety, Pt100 RS485 thermal sensors, and K-13 harmonic protection.
Results are for preliminary estimation only. Final selection should be confirmed based on project specifications and engineering review.
IEEE C57.110 Standard
S (kVA) = [ (P_IT / η_UPS) + P_HVAC + P_Aux ] / (PF × L_target × K_derate)
2N / N+1 Redundancy Ratio
Target operating load limit is 75% for 2N redundant systems, 80% for N+1.
Harmonic K-13 Rating
Protects transformer windings against non-linear server switch-mode power supplies.
Transformer Academy
Learning Path
Start with the plain-English basics, then move into RFQ, testing, standards, cooling, and calculator tools.