GE MAC 1200 ST Service Manual

Revision D MAC 1200 resting ECG analysis system 7-9
2012250-095
Service and Maintenance: Technical Inspections/Preventative Maintenance
Enclosure Leakage Current Test
This test is performed to measure leakage current from chassis to ground during
normal condition (N.C.) and single fault conditions (S.F.C.).
In all cases, the leakage current is measured from any exposed conductive parts to
ground, the unit being tested has to be switched on and off.
Connect the unit being tested to your safety tester.
 During normal condition (N.C.), measurements have to be done under the
following conditions (refer to the electrical diagram):
 Polarity switch Norm and RVS
 GND switch GND closed
 S1 closed and open
 During single fault conditions (S.F.C.), measurements have to be done under the
following conditions (refer to the electrical diagram).
 Polarity switch NORM and RVS
 GND switch GND open
 S1 closed
The test has failed if the measured values are greater than the following:
N.C. S.F.C
100 µA 500 µA 
300 µA (UL requirements)
Electrical Diagram for Enclosure Leakage Current Test
Patient Leakage Current Test
This test performs a leakage current test under single fault conditions (S.F.C.)
depending on domestic power outlet of 115 or 230 V AC as source into the floating
inputs.
In all cases, the leakage current is measured from input jack of the unit being tested
to ground.
Connect the unit being tested to your Safety Tester.
 Referring to the electrical diagram, the measurements have to be done under the
following conditions.
 Polarity switch NORM and RVS
 GND switch GND closed
 S1 closed
021A
Safety Tester
[M]
GND
Power Cord
Probe to
Exposed
Chassis
NORM/RVS
High
GND
Low
Unit Under Test
Power Cord

GE MAC 1200 ST Specifications

General

Brand	GE
Model	MAC 1200 ST
Category	Medical Equipment
Language	English