Hints For Correct Performance Of Safety Tests; Guideline For Performance Of Safety Tests - Philips M1013A IntelliVue G1 Service Manual

Safety Tests

Hints for Correct Performance of Safety Tests

• Perform a visual inspection on all detachable power cords used with the monitoring system and
include these in all safety test procedures.
• Connection lines such as data lines or functional earth conductors may appear to act like protective
earth connections. These may lead to incorrect measurements and need to be considered during
testing. If necessary, unplug these connections.
• During measurements, the device under test shall be isolated from earth (e.g. test on an insulated
work bench), except the protective earth conductor in the power supply cord.
• Position all cables and cords in such a manner that they do not influence the safety tests.
• Measurement of insulation resistance is not required.
• When testing a medical electrical system, where possible, test it such that potential ground voltage
variations are present as they may be during actual use.

Guideline for Performance of Safety Tests

This section introduces the general principle of performing recurrent safety tests. Product specific test
descriptions are described in the following sections.
Connect the detachable power cord of the device under test to the safety analyzer's test mains port.
Connect the enclosure test lead of the safety analyzer to the enclosure of the device under test, e.g. to
the equipotential connector. Refer to the documentation that accompanies the safety analyzer for
further details on how to set up and perform the test.
Figure 4 Protective Earth Resistance Test - Setup Example
N O T E The test lead needs to go to parts that require protective earthing. This may be a single connection or
several tested after each other.
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