Blog / Tag
#ct
2 posts filed under this tag, newest first.
Energy meter showing wrong readings: a checklist
Work out how wrong it is first — the size of the error names the cause. Ratio errors, reversed CTs, saturation and the ones that look plausible.
7 min read
CT ratio and burden: picking a CT that reads correctly
Why lead resistance dominates the burden on a 5 A secondary, what the S in class 0.5S buys you, and how an oversized ratio quietly loses accuracy at part load.
7 min read