Transformer Selection Calculator
⚠️
Prices are
reference estimates
(FOB Qingdao, EXW), not final quotes. Sizing is preliminary — verify against your project and local standards.
⚙️ Your Load & Specs
Load input
kW
kVA
Amps
Connected load (kW)
Power factor
Phase
3-phase
1-phase
Equipment type
Oil-Immersed Transformer
Dry-Type Transformer
Amorphous Alloy Transformer
Box-Type Substation
Winding
Copper
Aluminum
Efficiency / series
Type
Oil amorphous (SBH)
Dry amorphous (SCBH)
Winding
Copper
Aluminum
Internal transformer
Oil-immersed
Dry-type
HV unit
Load switch
Vacuum CB
SF6 RMU
Efficiency / series
HV voltage (kV)
LV voltage (kV)
0.4
0.38
0.48
0.22
Design margin (%)
📊 Result
Fill in your load on the left — the result appears here instantly.
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Transformer Selection Calculator
from QDTB.