Electrical safety tests
Ultrasound System – Common Service Information 4-19
Direction 5444964-100 English Rev. 5
Leakage current limits
The following acceptance limits and test conditions are
summarized from IEC 60601-1/A1:2012 (ed.3.1) including
national deviations and IEC 62353:2014 (ed.2) and in some
cases are lower than that specified by the standards.
Because the main source of leakage current is the mains supply,
there are different acceptance limits depending on the
configuration of the mains (100-130 Volt, 220-240 Volt, or
230-240 Volt mains).
WARNING
Energy Control and Power Lockout for Ultrasound System.
When servicing parts of the Ultrasound system where there is
exposure to voltage greater than 30 volts:
1. Follow LOCK OUT/TAG OUT procedures.
2. Turn off the breaker.
3. Unplug the Ultrasound system from the wall outlet, then
from the Ultrasound System.
4. Maintain exclusive control of the Ultrasound system power
cable.
5. Wait at least 30 seconds for capacitors to discharge as
there are no test points to verify isolation.
6. Remove/disconnect the battery if present.
Ultrasound System components may be energized.
Capacitors on Ultrasound Systems with the Shearwave Option
can take up to 5 minutes to discharge.
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