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Transformer

Assess transformer rating, regulation and fault levels.

IEEE C57 · AS 60076 · GEMS

1 · Nameplate

Australian ladder preset; fills rating, impedance and losses
kVA

2 · Ratio and impedance

V
V
%
Blank uses the T4 typical value for the rating
Blank assumes 0.90; disclosed in the audit

3 · Losses and loading

W
W
pu
cos φ

4 · Source and earthing

5 · Taps

Blank uses the primary voltage
V
Blank uses the secondary voltage
V
%
%

Results update as you change inputs. Units: kVA, V, W, %.

Results

Rating, fault level and regulation first; supporting calculations follow.

solved
Detailed analysis Faults, regulation, efficiency, taps, through-fault and audit

Document

Keep project details, calculation notes and references together.

Calculation record

Notes

  1. Nameplate values assumed per the standard-size preset unless overridden — verify against the actual nameplate.
  2. Fault, regulation and efficiency evaluated at the stated operating point.
  3. Through-fault damage curve is an indicative overlay; confirm the manufacturer's withstand and any relay grading.

References

  • Awaiting inputs
— · Rev A · — Report Print / Save as PDF A professional aid, not engineering judgement — you remain responsible for verifying every input and result against the standards that apply to your work.