GE LOGIC C2 Series, Technical Publication

Page: 111 / 127

Electrical safety tests
Ultrasound System
–
Common Service Information
4-33
Direction 5444964-100 English Rev. 5
Isolated patient lead (sink) leakage-isolation test
Select the Individual Leads as well as All Lead position since the
test is performed with mains applied to all ECG leads at the
same time.
Isolated lead (sink) leakage test record
Table 4-14 shows a typical format for recording the isolated
patient lead sink leakage current.
Measurements should be recorded for full lead combination
under each set of test conditions specified in:
• Table 4-8 on page 4-21
Record all data and keep the record of the results with other
hard copies of maintenance data.
1. Connect the Safety analyzer to a wall AC power outlet.
2. Plug the equipment under test into the receptacle on the
panel of the Electrical Safety Analyzer.
3. Connect the ECG cable to the Ultrasound system and the
patient leads to the analyzer.
4. Select the “Patient Lead Leakage” function on the Electrical
Safety Analyzer.
5. Test with closed ground with the Ultrasound system on and
off.
NOTE: Refer to the electrical safety analyzer’s user manual that will be
used to perform the tests.
CAUTION
Line voltage is applied to the ECG leads during this test. To
avoid possible electric shock hazard, the Ultrasound system
being tested must not be touched by patients, users or anyone
while the ISO TEST switch is depressed.