GE LOGIQ P3, Руководство по обслуживанию

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GE PROPRIETARY TO GE
D
IRECTION
5308917-100, R
EVISION
8 LOGIQ P3 S
ERVICE
M
ANUAL
10-22 Section 10-7 - Electrical Safety Tests
10-7-8 Probe Leakage Current Test
10-7-8-1 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.
10-7-8-2 Generic Procedure for Leakage current
Measurements should be made with the ground open and closed, with power line polarity normal and
reversed, and with the unit Off and On. For each combination, the probe must be active to find the worst
case condition.
NOTE: Each probe will have some amount of leakage current, dependent 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.
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.
Figure 10-5 Set Up for Probe Leakage Current
Saline