Chassis Leakage Current Test - GE Voluson E Series Service Manual

Care and Maintenance

10.6.5 Chassis Leakage Current Test

Warning: Electric Shock Hazard!
When the meter's ground switch is OPEN, DO NOT touch the Voluson E-Series system!
Caution: Equipment damage possibility!
Never switch the Polarity and the status of Neutral when the Voluson E-Series system is powered ON.
Power off the Voluson E-Series system, allow the stored energy to bleed down, and turn the circuit breaker
off BEFORE switching the "POLARITY" switch and/or the "NEUTRAL" switch on the leakage meter to avoid
possible power supply damage.
10.6.5.1 Definition
This test, also known as Enclosure Leakage current test, measures the current that would flow through a
grounded person who touches the accessible conductive parts of the equipment during normal and fault
conditions.
The test verifies the isolation of the power line from the chassis.
The meter is connected to parts of the equipment, easily contacted by the user or patient.
Record the highest reading.
10.6.5.2 Generic Procedure
The test verifies the isolation of the power line from the chassis. The testing meter is connected from
accessible metal parts of the case to ground. Measurements should be made under the test conditions
specified in:
•
Table 10-10 on page 10-11
Record the highest reading of current.
1. Connect the Safety analyzer to an AC wall outlet.
2. Plug the equipment under test into the receptacle on the panel of the meter.
3. Connect the meter to an accessible metal surface (see:
cable provided with the meter.
4. Select the "Chassis" or "Enclosure Leakage" function on the meter.
5. Test opening and closing the ground with the Voluson E-Series system on and off.
For more information, refer to the safety analyzer's user manual that will be used to perform the test.
Note
The maximum allowable limit for chassis source leakage is shown in:
•
Table 10-10 on page 10-11
10-14
, as applicable.
, as Chassis/Enclosure Leakage.
Table 10-13
) of the Voluson E-Series using the
Voluson E-Series Service Manual
5539550APB Revision 6