[VALIDATION] Create test case from Annex D.2 (LV 480V Example)

[sramharack]

What to Validate

Complete calculation against IEEE 1584-2018 Annex D.2 worked example.

IEEE 1584-2018 Reference

• Annex D.2 (pages ~63-67)

Test Inputs

• Ibf = 45 kA
• Voc = 0.48 kV
• Gap = 32 mm
• Working distance = 455 mm (18")
• Config = VCB

Expected Results (fill in from Annex D.2)

• Iarc_600 = ___ kA
• Final Iarc = ___ kA (via Equation 25)
• VarCf = ___
• Iarc_min = ___ kA
• CF = ___
• Final E = ___ J/cm²
• AFB = ___ mm

Acceptance Criteria

• All values match within 1%
• Test added to tests/test_ieee1584.py