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Intraoperative Transducers
I
S1
S2
S3
L
N
E
Testing Intraoperative Transducer Leakage Current (Source)
This test checks leakage current without mains voltage applied. For a diagram of this test, Test
1, see
WARNING
Electrical shock hazard: Do not touch the lead that you connect to the safety analyzer in step
7.
1. Plug the safety analyzer into the power source.
2. Plug the ultrasound system into the safety analyzer.
3. Connect the transducer being tested to the ultrasound system.
4. Immerse 5 cm (2 in) of the transducer in saline solution.
5. Set the safety analyzer Mode switch to the ECG position.
6. Set the safety analyzer Leads switch to the ALL (all ECG leads) position.
7. Connect a lead to any ECG terminal on the safety analyzer, and immerse the other end into
the saline solution.
8. Set the safety analyzer Line Polarity switch to Normal.
9. Note the normal condition leakage reading.
10. Hold the safety analyzer Ground Open switch in the Open position (single fault condition),
and note the leakage reading.
11. Repeat step 9 and step 10 with the Polarity switch in the Reverse position. These are the
applicable limits:
196
Current caused by e and stray capacitance, and optionally Z
Open earth lift ground switch
Line polarity switch
Isolation test button
Line mains supply
Neutral mains supply
Earth ground
"Leakage Current Testing for Intraoperative Transducers" on page
Leakage Current Testing for Intraoperative Transducers
193.
EPIQ 7 User Manual 4535 617 25341
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