EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY 23
The hazard electric current primarily depends the value the current passing through
the human body and its duration. 0,5% could not let go.
Curve Let-go-current for 99,5% the persons tested, i.1.
Curve Let-go-current for 50% the persons tested, i. 50% could not let go. The diagram may help in
the evaluation risks for different frequencies. remainder felt nothing.
Curve Threshold perception for 50% persons tested, i.e.e. remainder felt nothing. 99,5% could not let go. Important parameters regarding the risk electric shock,
besides the current and time aspects, are:
- frequency the current,
- resistance the human body (depending the frequency). Based
on publication the Association for the Advancement Medical Instrumentation
(AAMI) July 1971.
Figure 4.e.
Description curves:
Curve Conventional limits for current values normally not giving rise any reaction.
Curve Let-go-current for 0,5% the persons tested, i.
.e.e.3
Influence frequencies [according IEC 479 (1974), First edition].
Curve Threshold perception for 99,5% persons tested, i
