3 Testing and Maintenance Tests
50
S(1) Part 2: System Enclosure Leakage current - Single Fault (open earth)
Expected test results:
♦ Single Fault maximum leakage current x2 ≤ 500µA (IEC 60601-1)
≤ 300µA (UL2601-1)
This measures leakage current of exposed metal parts of Instrument under Test (IUT) with Protective
Earth (PE) open circuit (S4 = open) and between parts of the system within the patient environment;
normal and reversed polarity using S2.
(**) Can be multiple different connections to different equipment at same time.
PE
Instrument under test
Applied part
S4
N (L)
S1
S2
L (N)
Signal parts
in- and/or
output
MD
Medical electrical system
Signal parts
in- and/or
output
Other
Instrument
(**)
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