2 – 8 HS40 Service Manual
2.3. Electrical Safety
This equi pment is categorized as a Class I device with Type BF or Type CF (ECG) applied parts.
CAUTION
As for US requirement, the LEAKAGE CURRENT might be measured from a
center-tapped circuit when the equipment connects in the United States to
240V supply system.
To help assure grounding reliability, connect to a “hospital grade” or “hospital
only” grounded power outlet.
2.3.1. Prevention of Electric Shocks
In a hospital environment, hazardous current can form due to potential differences between
exposed conductive parts and connected devices. The solution to the problem is consistent
equipotential bonding. Medical equipment is connected with connecting leads made up of
sockets which are angled to the equipotential bonding network in medical rooms.
[Figure 2.1 Equipotential Bonding]
Additional equipment connected to medical electrical equipment must comply with the
respective IEC standards (e.g. IEC 60950/EN 60950 for data processing equipment, IEC 60601-
1/EN 60601-1 for medical devices). Furthermore, all configurations shall comply with the
requirements for medical electrical systems (see IEC 60601-1-1/EN 60601-1-1). Anybody
connecting additional equipment to signal input and output ports of medical electrical equipment
should make sure that the equipment complies with IEC 60601-1-1/EN 60601-1-1.
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