1.6 Types of Leakage Current Measurement
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This is electric current that flows through an "applied part human body ground" path.
Measure medical instruments with a signal input/output section and applied parts other than F-type. Mea-
sure assuming that medical equipment with a broken signal input/output section is connected. Instead of
connecting damaged medical equipment to generate a single-fault condition, input a voltage that is 110%
of the rated voltage.
(Use the T3 terminal on the instrument)
IEC 60601-1:2005 3rd Edition stipulates that the connection of damaged medical equipment does not
constitute a single-fault condition, but handles it as a normal condition.
Patient leakage current measurement (external voltage on a SIP/SOP)
JIS T0601-1:1999 treats patient leakage current II as patient leakage current I plus a
single fault condition.
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