GE Vivid S5 N, Руководство по обслуживанию

Страница: 824 / 834

GE
P
ART
N
UMBER
FN091065, R
EVISION
2 VS5 N
AND
VS6 N
S
ERVICE
M
ANUAL
10-24 Section 10-6 - Electrical Safety Tests
P R E L I M I N A R Y
10-6-5 Chassis Current Leakage Test
10-6-5-1 Definition
This test measures the current that would flow in a grounded person who touched accessible metal
parts of the bedside station, if the Ground wire should break. The test verifies the isolation of the power
line from the chassis.
The meter is connected from accessible metal parts of the case to Ground. Measurements should be
made with the unit ON and OFF, with the power line polarity Normal and Reversed. 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 with the unit ON and
OFF, with the power line polarity Normal and Reversed. 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 be 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 10-13 on page 10-21 .
DANGER
Electric Shock Hazard.
When the meter's Ground switch is OPEN,
do not touch the unit!
CAUTION
Equipment damage possibility.
Never switch the polarity and the neutral status when the unit is powered ON. Be sure to turn the unit
power OFF before switching them using the
Polarity switch and/or the Neutral switch. Otherwise, the
unit may be damaged.
Figure 10-3 Set Up for Chassis Source Current Leakage, IEC 601-1 Clause 19
Continuous Current Leakage and Patient, Auxiliary Currents