Performance Verification
N5500 Service Manual 25
Performance
Verification, N5500
3. Connect the ECG test cable between the ECG connector on the N5500 and the
appropriate input connector on the analyzer.
4. Turn on the N5500.
5. Perform the patient leakage current test as recommended by the analyzer operating
instructions.
6. Repeat the patient leakage current test for the SpO
2
and temperature patient
connections, using the appropriate test cables.
Note: Patient leakage current is measured under various conditions of the AC mains and
protective earth conductor. For each condition, the measured leakage current must
not exceed that indicated in Table 5.
Note: This test requires a test cable for each patient connector. For example, the ECG
test cable consists of the ECG cable connector, with all conductors shorted
together, connected to a test lead from the electrical safety analyzer. Test cables
for SpO
2
and temperature can be configured in a similar manner, by wrapping
each sensor end individually with aluminum foil filled with conductive gel (only
enough gel to ensure conductivity). Attach a wire to the foil that is connected to a
test lead from the electrical safety analyzer.
Table 5. Patient Leakage Current Values
Test Condition
Allowable Leakage Current (microamps)
Normal polarity
10
Normal polarity; Neutral open
50
Normal polarity; Earth open
10
Reverse polarity
50
Reverse polarity; Neutral open
50
Reverse polarity; Earth open
50
3.4.2.4 Patient Leakage Current - (Mains Voltage on the Applied Part)
WARNING: AC mains voltage will be present on the applied part terminals
during this test. Exercise caution to avoid electrical shock hazard.
WARNING: Do not touch the patient leads clips or the simulator parts connected
to patient leads during this test as an electrical shock will occur.
This test measures patient leakage current in accordance with IEC60601-1, clause 19,
for Class I, type CF equipment. In this test, 110% of mains voltage is applied between
each patient connection and earth (power ground). Patient leakage current is then
measured from any individual patient connection to earth.
