GE T8, Basic Service Manual

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Electrical safety tests
Vivid T9/Vivid T8 – Basic Service Manual 10-27
5795591-100 English Rev. 3
10-7-6 Probe leakage current test
10-7-6-1 Definition
This test measures the current that would flow to ground from
any of the probes through a patient who is being scanned and
becomes grounded by touching some other grounded surface.
NOTE: Some leakage current is expected on each probe, depending on
its design. Small variations in probe leakage currents are normal
from probe to probe. Other variations will result from differences
in line voltage and test lead placement. It is abnormal if no
leakage current is measured. If no leakage current is detected,
check the configuration of the test equipment.
10-7-6-2 Tools
For needed tools, see: 10-5 ‘Tools required’ on page 10-8 .
DANGER
DO NOT USE THE PROBE IF THE INSULATING MATERIAL
HAS BEEN PUNCTURED OR OTHERWISE COMPROMISED.
INTEGRITY OF THE INSULATION MATERIAL AND PATIENT
SAFETY CAN BE VERIFIED BY SAFETY TESTING
ACCORDING TO IEC60601-1.
CAUTION
Equipment damage possibility. Never switch the Polarity and
the status of Neutral when the Ultrasound system is powered
ON. Be sure to turn the Ultrasound system power OFF before
switching them using the POLARITY switch and/or the
NEUTRAL switch. Otherwise, the Ultrasound system may be
damaged.