Tolerable body currents - All Electron - All about High Voltage systems

Tolerable body currents

Ask 10 persons to read the graph and you get 10 different answers. So why not describe it with a formula? The IEC curves (from IEC 60479-1) below are established using the formula’s as provided in this article (c2, c3 and c4 curve) and this brochure (c1 curve). For reference, the IEEE curves (from IEEE std80) are also included.

Active curve:

Duration (ms):

Body current Ib (mA):

Tip: Click a curve in the plot to select it. Sliders and inputs stay synchronized with the active curve and clamp to its valid domain.

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