GE Voluson E8 Service Manual page 417

GE H DRAFT
EALTHCARE
D KTD102576, R
IRECTION
10-7-5 Chassis Leakage Current Test
Electric Shock Hazard.
DANGER
When the meter's ground switch is OPEN, DO NOT not touch the system!
!! DANGER:
Equipment damage possibility. Never switch the Polarity and the status of Neutral when the
CAUTION
system is powered ON. Be sure to turn the system power OFF before switching them using the
!! CAUTION: POLARITY switch and/or the NEUTRAL switch. Otherwise, the system may be damaged.
10-7-5-1 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 10-10 on page
• Table 10-11 on page
Record the highest reading.
10-7-5-2 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
• Table 10-11 on page
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 10-10 on page
• Table 10-11 on page
Follow the test conditions described for respective test points shown in
Table 10-14 Chassis Leakage Current Test Condition
TEST
1
7 DRAFT (A
EVISION
10-13, or
10-13, as applicable.
10-13, or:
10-13, as applicable.
10-13, or
10-13, as Chassis/Enclosure Leakage.
CONDITION
Potential equilibrium connector
(rear of system, on primary power supply RTN)
Chapter 10 - Care & Maintenance
23, 2012)
UGUST
V E8 / V
OLUSON OLUSON
S
ERVICE
Table 10-14.
TEST POINT (image)
E6
M
ANUAL
10-17