Transformer Hot Spot, Ageing and Harmonic Derating
Wired White v1 Model a 24-hour transformer load cycle, hot-spot temperature and insulation life use. Calculate harmonic loss factors and loss-based derating from a current spectrum.
Power systems and protection
Grids, lines, transformers and protection: relay coordination curves, CT saturation, transformer hot spot and loss of life, conductor ratings, line parameters. Each calc names the method, the standard and edition it follows and its limits; they are for screening and learning, and a protection or grid study still needs a qualified engineer.
Wired White v1 
Overcurrent Relay Coordination Calculator: IEEE & IEC TCC
Wired White v1 Plot IEEE and IEC relay curves with CT ratios, instantaneous trips and user fuse points. Screen grading margins and find a candidate upstream time dial and pickup interval.
