Leakage Current Limits - GE Venue 50 Basic Service Manual

Care and Maintenance

Leakage current limits

WARNING
CAUTION
Table 10-11:
Country
All (Except USA & 0.1 mA
Canada)
USA & Canada 0.1 mA
Table 10-12:
Country
All
10-22
Energy Control and Power Lockout for Venue 50.
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.
The following limits are summarized for IEC 60601-1 Medical
Equipment Safety Standards. These limits are GE standards
and in some cases are lower than the above standards listed.
Chassis Leakage Current Limits - Accessible Metal Surface
Normal
Condition Open Ground
0.5 mA
0.3 mA
Type BF Applied Part Leakage Current Limits - Probes Surface
Normal Open
Condition Ground
0.1 mA 0.5 mA
Reverse
Polarity
0.5 mA
0.3 mA
Reverse Open
Polarity Neutral
0.5 mA 0.5 mA
Venue 50 – Basic Service Manual
5447566-100 English Rev. 7
Open Neutral
0.5 mA
0.3 mA
*Mains
Applied
5.0 mA