Table 3-3: Enclosure Leakage Current Limits; Table 3-4: Patient Leakage Current Limits - Mallinckrodt NELLCOR NPB-195 Service Manual

3.4.2.3 Patient Applied Risk Current

Table 3-3: Enclosure Leakage Current Limits

AC LINE NEUTRAL
CORD LINE
CORD
Closed Closed
Closed Closed
Closed Open
Open Closed
Open Open
Open Closed
This test is in compliance with AAMI Standard ES1 (patient applied risk
current), and IEC 601-1 (patient auxiliary current). The leakage current is
measured between any individual patient connection and power (earth) ground.
The applied voltage for AAMI/ANSI is 120 VAC 60 Hz, and for IEC 601-1 the
applied voltage is 264 VAC 50 to 60 Hz.
1. Configure the electrical safety analyzer as follows:
Function:
Range: µA
2. Connect the monitor AC plug to the electrical safety analyzer as
recommended by the analyzer operating instructions for Patient Leakage
Current.
3. Connect the patient leakage input lead of the electrical safety analyzer to all
pins of the monitor's patient cable at the end of the cable.
4. The equipotential terminal is not connected to ground.
5. All functional earth terminals are not connected to ground.
6. Measure the leakage current between the patient connector and earth. See
Table 3-4.

Table 3-4: Patient Leakage Current Limits

AC LINE NEUTRAL
POLARITY LINE
Normal Closed
Normal Open
Normal Closed
Reverse Closed
Reverse Open
Reverse Closed
Section 3: Performance Verification
POWER
LINE
GROUND
CABLE
Closed
Open
Closed
Closed
Closed
Open
Patient Leakage
POWER
LINE
GROUND
CABLE
Closed
Closed
Open
Closed
Closed
Open
IEC 601-1 AAMI/ANSI
ES1
STANDARD
100 µA 100 µA
500 µA 300 µA
500 µA 300 µA
500 µA 100 µA
500 µA 300 µA
500 µA 300 µA
IEC 601-1 AAMI/ANSI
ES1
STANDARD
100 µA 10 µA
500 µA 50 µA
500 µA 50 µA
100 µA 10 µA
500 µA 50 µA
500 µA 50 µA
3-11