Cardiac Science Atria 3100, Operating Instructions Manual

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70-00082-01 A Atria Electrocardiograph Operating Instructions 2-1
Chapter
2
Equipment Setup
External Connections
Equipotential Ground
The Atria Electrocardiograph is considered CLASS II (ungrounded)
equipment.
The exposed metal on the Atria is not likely to become energized because all
the exposed metal is double insulated from the internal live circuitry (i.e.,
will not become energized under single fault conditions). As a result, it is
safer not to connect the exposed metal to the internal chassis or the
functional earth of the Atria.
This method of protection is recognized by all national and international
consensus standards and safety agencies. Since the exposed metal in the
Atria cannot become energized by any fault of the internal live circuitry and
cannot become energized as a result of differences in the ground potential
(because the exposed metal is not connected to ground via any Protective
Earth conductor), then there is no reason to provide voltage equalization.
Therefore, the equipotential ground contact is not connected to the exposed
metal.
Input Power
!
WARNING
Patient shock. The Atria must only be used with a medical grade power
cord connected to medical grade AC outlet.
!
WARNING
Trip hazard. Route all cables away from main work areas to minimize risk
of tripping and injury.
!
WARNING
Shock hazard. Connect the Atria only to non-medical equipment
compliant with IEC 60950 or 60601-1.
In addition, the enclosure leakage current of non-medical equipment
connected to the Atria must not exceed 150µA in fault condition.
If necessary, use an additional isolating transformer or floating power
supply to maintain a proper enclosure leakage current and provide
additional protection.