Revision B3-14
Maintenance: Domestic Electrical Safety Tests
MAC 5000 resting ECG analysis system
2000657-002
Leakage Tests
The leakage tests are safety tests to ensure that the equipment poses no
electrical health hazards. Use the table below to determine which tests
apply to the unit under test and the maximum allowable leakage
currents. For international leakage limits, refer to the internal standards
agencies of that particular country.
If the unit under test fails the leakage tests, do not allow the customer to
use the equipment. Call Tech Support for assistance. (See the “How to
Reach Us” page in the front of the manual.)
GE Marquette Medical Systems recommends that you perform these
tests:
■ Before applying power for the first time
■ Every 6 months as part of routine maintenance
■ Whenever internal assemblies are serviced
NOTE
The accuracy of the leakage tests depends
on a properly-wired wall outlet. Do not
proceed until you verify the integrity of the
power source.
WARNING
M15287-76A
Total system leakage
current must not
exceed 300
microamperes.
Table 3-2. Leakage Tests and Maximum Allowable Leakage Currents
Test Maximum Current (µA)
1 Ground-wire-leakage-to-ground 300
2 Chassis-leakage-to-ground 300
3 Patient-cable-leakage-to-ground 10
4 Patient-cable-leakage-into-patient-leads-from-120 V ac 20
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