5
Paragraph 10.2.13.5.1: Leakage
Current from Patient Connected
Leads to Ground (Nonisolated)
1.
Connect the LCT-601 to the EUT using
the female attachment plug cap pigtail.
2.
Connect the LCT-601 to mains power
using the male attachment plug cap
pigtail.
3.
Set the MEAS POINT Switch to the
CHASSIS MEAS POINT (left) position.
4.
Regarding the EARTH switch (second
switch from the top); the test is to be
conducted with the EARTH switch in
both positions.
5.
Set the NEUTRAL switch (third switch
from the top) to the NEUTRAL
CONNECTED position.
6.
Regarding the POLARITY switch; the
test is to be conducted with the
POLARITY switch in both positions.
7.
Regarding the power switch of the EUT,
the test is to be conducted with the EUT
power switch in both the ON and OFF
positions.
8.
Connect a calibrated voltage meter
across the RED and GREEN LEAKAGE
banana plugs on the LCT -601. Set it to
read ~100uV.
9.
Connect the RED LEAKAGE banana
plug of the LCT-601 to each patient-
connected lead in turn and conduct
measurements for all eight test
conditions. Each patient-connected
lead is to be energized by properly
switching the EUT.
10. Connect all patient-connected leads
together, connect them to the RED
LEAKAGE banana plug of the LCT-601
and conduct measurements for all eight
test conditions. For this test, switch the
EUT to the output condition that results
in the highest leakage output.
11. Read the current meter for the eight
conditions noted above and for each
patient-connected output, and for all
patient-connected outputs together. A
passing result is <100uA (<100uV on the
meter connected to the LCT-601) for any
condition.
12. See Figure 3 and Table 3 for a Test
Setup synopsis. This section is based
on NFPA 99 Fig. 10.2.13.5.1.4, see below.
Figure 3 Non-isolated Patient Leads
Table 3 Non-isolated Patient Leads
Jack/Switch
Position
FEMALE Cordset
To EUT
MALE Cordset
To Mains Power
RED LEAKAGE Jack
To voltage meter
and EUT
nonisolated patient
connections
GREEN LEAKAGE Jack
To voltage meter
RED RESISTANCE jack
N/C
MEAS. POINT Switch
CHASSIS
EARTH Switch
TEST IN BOTH
POSITIONS
NEUTRAL Switch
CONNECTED
POLARITY Switch
TEST IN BOTH
POSITIONS
EUT Power Switch
TEST IN BOTH
POSITIONS
PASS Result:
<100uA
FIGURE 10.2.13.5.1.4 Test Circuit for Measuring
Leakage Current Between Patient Leads and
Ground (Nonisolated).
Summary of Contents for LCT-601
Page 1: ...LCT 601 NFPA 99 Leakage Current Tester Instruction Manual COMPLIANCE WESTUSA...
Page 3: ...ii Rev 1 1 May 20 2005...
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