Fluke Biomedical DALE601 - Manual (Page 41)

Operation
Measuring MAP (Patient Lead Isolation) Current
2
2-17
For this test, the Analyzer provides a specially shielded line voltage secondary
on its power transformer that minimizes internal leakage currents from the
measuring circuit. This avoids the necessity of measuring the current and
subtracting it from all readings. The current is limited with a 120 K
Ω resistor
for user protection.
XW Warning
To avoid possible electrical shock or personal injury to the
patient, take care when handling the patient leads. High
voltage, 120/230 volts with respect to earth ground, is
accessible at the patient connections during part of this
test.
To measure lead isolation sink current:
1. Connect the patient leads to the universal lead connectors on the front of
the analyzer.
2. Set the FUNCTION switch to M.A.P .
MAI N S V OLTAGE
CURRE N T AMPS
EARTH RESISTA N CE
EARTH LEAKAGE
E N CLOSURE LEAKAGE
PATIE N T LEAD LEAKAGE
PATIE N T AUX CURRE N T
M.A.P.
EXTER N AL
fcu10.eps
3. Select the individual lead to be tested by the LEADS switch.