Safelock Cart - Chassis Current Leakage Test - GE Vivid i n Service Manual

GE H
EALTHCARE
D FQ091013, R
IRECTION
10-7-5

SafeLock Cart - Chassis Current Leakage Test

10-7-5-1 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.
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.
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 with the unit ON and
OFF, with the power line polarity Normal and Reversed. Record the highest reading of current.
Figure 10-3 Set Up for Chassis Source Current Leakage, IEC 601-1 Clause 19
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 10-14
1
EVISION
Continuous Current Leakage and Patient, Auxiliary Currents
on page 10-22.
Chapter 10 - Care and Maintenance
V V N S
IVID I N AND IVID Q
M
ERVICE ANUAL
10-25