Mallinckrodt NELLCOR NPB-4000, Service Manual, Page: 33 / 219

Section 3: Performance Verification
3-21
Table 3-7: Patient Leakage Current Values— Mains Voltage on Applied Part
Test Condition
Allowable Leakage
Current (microamps)
Normal polarity 50
Reverse polarity 50
3.4.2.5 Patient Auxiliary Current
This test measures patient auxiliary current in accordance with IEC 601-1, clause 19,
for Class 1, type CF equipment.
The applied voltage for AAMI ESI is 120 volts, 60 Hz, and for IEC 601-1 the voltage
is 264 volts, 50 to 60 Hz.
Patient auxiliary current is measured between each ECG test lead and between each
sensor connection for all possible connections.
Note: This test requires the same test cables for each patient connector as
described in paragraph 3.4.2.3.
1. Configure t he e lectrical safety analyzer as recommended by the electrical
analyzer’s operating instructions.
2. Connect the monitor’s AC mains power cord to the electrical analyzer as
recommended by the electrical analyzer’s operating instructions.
3. Connect the patient test lead combination in table 3-8 to the appropriate
input connector on the electrical analyzer.
4. Turn on the NBP-4000/4000C.
5. Perform patient auxiliary current test per table 3-9 as recommended by electrical
analyzer’s operating instructions.
6. Repeat the patient auxiliary current test for each test lead combination as listed
in Table 3-8 and measure each patient auxiliary current.
Temperature SpO
2
ECG #3 (RA) SpO
2
ECG #2 (LL) SpO
2
ECG #1 (LA) SpO
2
ECG #3 (RA) Temperature
Table 3-8: Test Lead Combinations
First Test Lead Second Test Lead
ECG #2 (LL) Temperature
ECG #1 (LA) Temperature
ECG #2 ( LL ) ECG #3 (RA)
ECG # 1 (LA) ECG # 2 (LL)
ECG #1 ( L A) ECG #3 (RA)