Electrical safety tests
LOGIQ V3/V5/V5 Expert – Basic Service Manual 10-21
5726264-100 English Rev.8
10-7-2 Leakage current limits
The following limits are summarized for IEC 60601-1 Medical
Equipment Safety Standards. These limits are GEMS standards
and in some cases are lower than the above standards listed.
Energy Control and Power Lockout for LOGIQ V3/V5/V5
Expert.
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.
4. Maintain control of the Ultrasound system power plug.
5. Wait for 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.
Compare all safety-test results with safety-test results of
previously performed safety tests (e.g. last year etc). In case of
unexplainable abrupt changes of safety-test results consult
experienced authorized service personnel or GE for further
analysis.
Table 10-12: Chassis Leakage Current Limits - Accessible Metal Surface
Country
Normal
Condition Open Ground
Reverse
Polarity Open Neutral
All (Except USA &
Canada)
0.1 mA 0.5 mA 0.5 mA 0.5 mA
USA & Canada 0.1 mA 0.3 mA 0.3 mA 0.3 mA
Table 10-13: Type BF Applied Part Leakage Current Limits - Probes Surface
Country
Normal
Condition
Open
Ground
Reverse
Polarity
Open
Neutral
*Mains
Applied
All 0.1 mA 0.5 mA 0.5 mA 0.5 mA 5.0 mA
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