Table 3-3: Enclosure Leakage Current Limits - Nellcor NPB-190 Service Manual

AC LINE
CORD
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3.4.2.3 Patient Applied Risk Current
AAMI/ANSI is
120 VAC 60 Hz, and for IEC 601-1 the applied voltage is 264 VAC 50 to 60 Hz.
1. Connect the monitor AC plug to the electrical safety analyzer as
recommended by the analyzer operating instructions.
2
2. Place a 200 cm foil in contact with the instrument case making sure the foil
is not in contact with any metal parts of the enclosure that may be grounded.
Measure the leakage current between the foil and earth.
The analyzer leakage indication must not exceed values listed in the table below:

Table 3-3: Enclosure Leakage Current Limits

NEUTRAL
LINE CORD
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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:
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 electrical safety analyzer patient leakage input lead 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.
Section 3: Performance Verification
POWER LINE IEC 601-1
GROUND CABLE
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Patient Leakage
µA
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
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