(2) Set the ECG switch to RA-LA. If possible, set the corresponding switch of
the UUT to the same position.
(3) Measure the leakage current between leads for the following conditions
with normal polarity selected:
UUT power off, grounded.
UUT power off, ground open.
UUT power on, grounded.
UUT power on, ground open.
(4) Perform steps (1) and (2) for the other interlead positions (RA-RL and LA-
RL). Ensure that you change ECG switch positions for both the safety analyzer and the
c. Perform Isolation Test. Refer to figure 2-2. Perform the following steps.
Set the switch to ISO TEST.
(2) Depress the ISO TEST button. This test measures the leakage current
that would result if line voltage is applied to the ECG terminals. Refer to paragraph 2-3f for
power down procedures.
Depressing the ISO TEST button applies line voltage to the ECG posts.
The current is internally limited to 1ma.
During the isolation test, select only the properly wired test receptacle condition
(normal polarity and closed ground).
If the UUT fails any safety test, document the measurements on the appropriate
form. Ensure that the equipment is tagged and turned in for repair according to
your shop's standing operating procedures (SOP). Refer to figure 2-2 for a
sample of leakage current limits.