GE H
EALTHCARE
D
IRECTION
5213326-100, R
EVISION
3
LOGIQ™ A3 S
ERVICE
M
ANUAL
Chapter 10
10-13
10-6-2
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. These tests are:
grounding continuity, chassis leakage current,and probe leakage current. All measurements are made
with an electrical safety analyzer Model 600/600E built by Dale Technology Corporation or equivalent
device.
Table 10-14 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
N/A
Other
0.1 mA
0.5 mA
0.5 mA
0.5 mA
Table 10-15 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
0.05 mA
0.05 mA
0.05 mA
0.05 mA
N/A
Other
0.1 mA
0.5 mA
0.5 mA
0.5 mA
5.0 mA
Table 10-16 Type CF Applied Part Leakage Current Limits - Surgical Probes
Country
Normal
Condition
Open Ground
Reverse Polarity
Open Neutral
*Mains Applied
USA
0.01 mA
0.05mA
0.05 mA
N/A
0.025 mA
Other
0.01 mA
0.05 mA
0.05 mA
0.05 mA
0.05 mA
State: RELEASE - Document is released and under formal Change Control. Changes are subject to the ECR/ECO Process.
See the GEHC Myworkshop System to determine the status of this document.
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