GE Transport Pro Service Manual page 62

4-20
Maintenance: Electrical Safety Tests
Compliance is checked by the following steps:
1. A current not less than 10A and not exceeding 25A from a current
source with a frequency of 50 or 60 Hz with a no-load voltage not
exceeding 6 V is passed for at least 5 s through the protective earth
terminal or the protective earth pin in the mains plug and the ground
tabs of the Video In connector which could become live in case of
failure in basic insulation.
2. The voltage drop between the parts described is measured and the
impedance determined from the current and voltage drop. It shall not
exceed the values indicated.
For equipment without a power supply cord the impedance between the
protective earth terminal and the ground tabs of the Video In connector
which is protectively earthed shall not exceed 0.1 ohms
For equipment with a power supply cord the impedance between the
protective earth pin in the mains plug and the ground tabs of the Video
In connector which is protectively earthed shall not exceed 0.2 ohms.
When taking this measurement, move the unit's power cord around.
There should be no fluctuations in resistance.
Transport Pro Patient Monitor
2012659-002
Revision A