16
Paragraph 10.2.13.5.3: Isolation
Test (Isolated Input)
Reserved for future use.
Paragraph 8.4.1.3.6.4: Between
Leads (Nonisolated Input)
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
FLOATING MEAS POINT (right)
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.
Set the POLARITY switch to the
NORMAL position.
7.
The power switch of the EUT is to be
ON.
8.
Connect a calibrated voltage meter
across the RED and GREEN LEAKAGE
banana plugs on the LCT -601. Set it to
read ~50uV.
9.
Connect the BLACK FLOATING
MEAS. POINT banana jack on the LCT-
601 to a patient-connected lead.
10. Connect the RED LEAKAGE banana
plug of the LCT-601 to each patient-
connected lead in turn and conduct
measurements for all four test
conditions. Each patient-connected
lead is to be energized by properly
switching the EUT.
11. Testing is done for each patient lead to
all other patient leads; that is, each pair
combination must be tested.
12. Read the current meter for both
conditions noted above and for each
patient-connected output pair. A
passing result is <50uA (<50uV on the
meter connected to the LCT-601) for any
condition.
13. See Figure 14 and Table 14 for a Test
Setup synopsis. This section is based
on NFPA 99 Fig. 10.2.13.5.4.1, see below.
Figure 12 Between Leads (Nonisolated)
Table 12 Between Leads (Nonisolated)
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
FLOATING MEAS. PT.
EUT nonisolated
patient connections
MEAS. POINT Switch
FLOATING
EARTH Switch
TEST IN BOTH
POSITIONS
NEUTRAL Switch
CONNECTED
POLARITY Switch
NORMAL
EUT Power Switch
ON
PASS Result:
<50uA
FIGURE 8.4.1.3.6.4 Test Circuit for Measuring
Leakage Current Between Patient Leads —
Nonisolated and Isolated.
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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