GE HEALTHCARE - KRETZTECHNIK VOLUSON® 730EXPERT (BT03)
D
IRECTION 105899, REVISION 3 DRAFT (APRIL 29, 2008) SERVICE MANUAL
Chapter 10 - Care & Maintenance 10-13
10-7-2 GEMS Leakage Current Limits
The following limits are summarized for NFPA 99 (For USA) and IEC 60601-1 Medical Equipment
Safety Standards. These limits are GEMS standards and in some cases are lower than the above
standards listed.
NOTE: *Mains Applied refers to the sink leakage test where mains (supply) voltage is applied to the part to
determine the amount of current that will pass (or sink) to ground if a patient contacted mains voltage.
The following tests are performed at the factory and should be performed at the site.
- Grounding Continuity
- Chassis Leakage Current
- Probe Leakage Current
- ECG Leakage Current
All measurements are made with an electrical safety analyzer.
Table 10-11 Chassis Leakage Current Limits—Accessible Metal Surfaces
Country Normal Condition Open Ground Reverse Polarity Open Neutral
USA
N/A
0.3 mA 0.3 mA 0.3 mA
Other
0.1 mA
0.5 mA 0.5 mA 0.5 mA
Table 10-12 Type BF Applied Part Leakage Current Limits - Non-Conductive (Floating) Surface
and Cavity Probes
Country
Normal
Condition
Open Ground Reverse Polarity Open Neutral *Mains Applied
USA
0.1 mA
0.5 mA 0.5 mA 0.5 mA 5.0 mA
Other
0.1 mA
0.5 mA 0.5 mA 0.5 mA 5.0 mA
Table 10-13 Type CF Applied Part Leakage Current Limits - Surgical Probes and ECG
Connections
Country
Normal
Condition
Open Ground Reverse Polarity Open Neutral *Mains Applied
USA
0.01 mA
0.05mA 0.05 mA 0.05 mA 0.05 mA
Other
0.01 mA
0.05 mA 0.05 mA 0.05 mA 0.05 mA
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