Rad-97 Service Manual Chapter 4: Electrical Safety Testing
Masimo Corporation 52 www.masimo.com
Measuring Patient Leakage Current
Patient leakage current is the leakage current that flows from the individual patient connector (Lead/probe) of the DUT via the patient to earth.
Refer to schematic below for this test setup:
For more specific test setup, follow the setup instructions as part of your Electrical Safety Tester.
The following test conditions should be considered for Patient Leakage Current testing:
Measuring Point A Measuring Point B Input Voltage Frequency Device State Polarity Neutral Earth Test Condition Leakage Current Limit
3
Protective Earth DUT’s patient connector 120 Vac or 240 Vac 50 or 60 Hz ON Normal Closed Closed NC 100 μA
Protective Earth DUT’s patient connector 120 Vac or 240 Vac 50 or 60 Hz ON Reverse Closed Closed NC 100 μA
Protective Earth DUT’s patient connector 120 Vac or 240 Vac 50 or 60 Hz OFF Normal Open Closed SFC 500 μA
Protective Earth DUT’s patient connector 120 Vac or 240 Vac 50 or 60 Hz OFF Reverse Open Closed SFC 500 μA
Protective Earth DUT’s patient connector 120 Vac or 240 Vac 50 or 60 Hz ON Normal Closed Open SFC 500 μA
Protective Earth DUT’s patient connector 120 Vac or 240 Vac 50 or 60 Hz ON Reverse Closed Open SFC 500 μA
3
Patient Leakage Current limits based upon IEC 60601-1, 3rd Edition.
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