GE MEDICAL SYSTEMS
2127661
LOGIQ 400 SERVICE MANUAL
7–19 PERIODIC MAINTENANCE
REV 5
7–3–5 ECG Leakage Current Test (Continued)
Data Sheet for ECG Leakage Current
Follow the foregoing test procedure. The test passes when all readings measure less than the value shown in the
table below (TABLE 7–7).
TABLE 7–7
MAXIMUM ALLOWANCE LIMIT FOR ECG LEAKAGE CURRENT
Patient Lead to Ground Leakage Current Test
and
Patient Lead to Lead Leakage Current Test
AC POWER
SOURCE
115V 20 µA
220/240V 5mA
GROUND GROUND
OPEN CLOSED
115V 10 µA 10 µA
220/240V 500 µA 10 µA
MAXIMUM
ALLOWANCE LIMIT
AC POWER
SOURCE
MAXIMUM
ALLOWANCE LIMIT
Patient Lead Isolation Current Test
CAUTION
Equipment damage possibility. Never switch the Polarity when the unit is powered ON. Be
sure to turn the unit power OFF before switching the polarity using the POLARITY switch. Oth–
erwise, the unit may be damaged.
TABLE 7–8
DATA SHEET FOR ECG LEAKAGE CURRENT
ON NORM CLOSED
ON REVERSE CLOSED
ON NORM OPEN
ON REVERSE OPEN
OFF NORM CLOSED
OFF REVERSE CLOSED
OFF NORM OPEN
OFF REVERSE OPEN
ECG Tester Tester Tester Lead Selector
Power Polarity GROUND
Switch Switch RL RA LA LL C
Patient Lead Isolation Current Test
ON NORM CLOSED
ON REVERSE CLOSED
ON NORM OPEN
ON REVERSE OPEN
OFF NORM CLOSED
OFF REVERSE CLOSED
OFF NORM OPEN
OFF REVERSE OPEN
ECG Tester Tester Tester Lead Selector
Power Polarity GROUND
Switch Switch RL RA LA LL C
Patient Lead to Lead Leakage Current Test
ON NORM CLOSED
ON REVERSE CLOSED
ON NORM OPEN
ON REVERSE OPEN
OFF NORM CLOSED
OFF REVERSE CLOSED
OFF NORM OPEN
OFF REVERSE OPEN
ECG Tester Tester Tester Lead Selector
Power Polarity GROUND
Switch Switch RL RA LA LL C
Patient Lead to Ground Leakage Current Test
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