GE GA000100, Service Manual

Page: 781 / 802

GE H
EALTHCARE
D
IRECTION
GA091568, R
EVISION
5 VIVID E9 S
ERVICE
M
ANUAL
Chapter 10 - Care & maintenance 10 - 25
10-6-5 Chassis Leakage Current Test
10-6-5-1 Definition
This 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.
Measurements should be made under the test conditions specified in:
• Table 10-9 on page 10-22 ,
or:
• Table 10-10 on page 10-22 ,
as applicable.
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 10-9 on page 10-22 ,
or:
• Table 10-10 on page 10-22 ,
as applicable.
Record the highest reading of current.
When using the Microguard or a similar test instrument, its power plug may be inserted into the wall
outlet and the equipment under test is plugged into the receptacle on the panel of the meter. This places
the meter in the grounding conductor and the current flowing from the case to ground will be indicated
in any of the current ranges.
The maximum allowable limit for chassis source leakage is shown in:
• Table 10-9 on page 10-22 , or
• Table 10-10 on page 10-22 ,
as Chassis/Enclosure Leakage.
CAUTION
Electric Shock Hazard. When the meter's ground switch is OPEN, don't touch the VIVID E9!
CAUTION
Equipment damage possibility. Never switch the Polarity and the status of Neutral when the
VIVID E9 is powered ON. Be sure to turn the VIVID E9 power OFF before switching them using
the POLARITY switch and/or the NEUTRAL switch. Otherwise, the VIVID E9 may be damaged.