GE CARESCAPE Monitor B850, Руководство по обслуживанию

Страница: 116 / 192

CARESCAPE Monitor B850
108
2106778-001
When taking this measurement, flex the unit’s power cord along its length. There should
be no fluctuations in resistance.
Acceptance criteria:
•
For equipment without a power supply cord, the impedance between the protective
ground terminal and any accessible metal part which is protectively grounded shall not
exceed 0.1 Ohms.
• For equipment with a power supply cord, the impedance between the protective ground
pin in the mains plug and any accessible metal part which is protectively grounded shall
not exceed 0.2 Ohms.
8.2.5 Ground leakage current test
This test measures the current leakage flowing from the mains part through or across the
insulation into the protective ground conductor of the device under test.
Perform this test both in Normal Condition (NC) and in a Single Fault Condition (SFC), where one
of the supply conductors is open at a time. Perform the test with normal and reverse polarity.
NOTE: Refer to the instructions delivered with the safety analyzer to perform this test.
NOTE: *The measuring device (MD) represents the network and voltage measuring instrument
and its frequency characters according to IEC 60601-1.
1. Configure the safety analyzer as follows (NC):

Polarity: NORMAL

Neutral: CLOSED
2. Power on the device under test.
3. Read and record the current leakage indicated on the safety tester.
4. Configure the safety analyzer as follows (SFC):

Polarity: NORMAL

Neutral: OPEN