Mallinckrodt NELLCOR NPB-4000, Service Manual

Page: 31 / 219

Section 3: Performance Verification
3-19
Table 3-5: Enclosure Leakage Current
AC Line
Cord
Neutral Line
Wire
Power Line
Ground
W ire
IEC 601-1
AAMI/ANSI
ES1
Standard
Closed Closed Closed
100
µ
A 100
µ
A
Closed Closed Open
500
µ
A 300
µ
A
Closed Open Closed
500
µ
A 300
µ
A
Open Closed Closed
500
µ
A 100
µ
A
Open Open Closed
500
µ
A 300
µ
A
Open Closed Open
500
µ
A 300
µ
A
3.4.2.3 Patient Leakage Current
This test measures patient leakage current in accordance with IEC 601-1, clause
19, for Class I, type CF equipment. Patient leakage current in this test is
measured from any individual patient connection to earth (power ground).
1. Configure the electrical safety analyzer as recommended by the analyzer
operating instructions.
2. Connect the monitor’s AC mains power cord to the analyzer as
recommended by the analyzer operating instructions.
3. Connect the ECG test cable between the ECG connector on the
NPB- 4000/C and the appropriate input connector on the analyzer.
4. Turn on the NPB- 4000/C.
5. Perform the patient leakage current test as recommended by the analyzer
operating instructions.
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 3-6.
6. Repeat the patient leakage current test for the SpO
2
and temperature patient
connections, using the appropriate test cables.
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.