User Manual

1587 FC/1587/1577
Calibration Manual
26
Insulation Function, Source Voltage Accuracy Test
The following test verifies the accuracy of the source voltage for the insulation
function.
WCaution
To prevent damage to the Test DMM use a HV Probe
(Divider) with the Test DMM when testing the 1000V range
of the UUT.
1. Connect the output of the HV Probe to the V – Com inputs on the Test DMM
and turn the rotary switch to E.
2. Connect the input of HV Probe to the INSULATION output terminals on the
UUT as shown in Figure 7.
3. Set the rotary switch to INSULATION.
4. Refer to Table 5, and complete steps 1 through 5. For each step, select the
specified range on the UUT, press , and verify that the voltage
readings on both the UUT (lower right hand corner) and the DMM are within
the limits shown in the table.
M
IN M
A
X
H
O
LD
REL
%
m
s
H
z
R
A
N
GE
d
B
d
B
a
c+
d
c
a
c+
d
c
a
c
+
dc
a
c
+
d
c
F
n
S
mA
mA
A
mV
V
mV
V
O
F
F
C
A
A
A
A
m
A
C
O
M
V
TEMPERATURE
A
a
c
+
dc
Au
toHOLD
LOGGING
SA
VE
CANCEL
YES
NO
C
L
E
A
R
M
E
M
V
IE
W
SETUP
Insulation
Test DMM
UUT
ebp06f.eps
Figure 7. Source Voltage Accuracy Test
Table 5. Insulation Mode, Source Voltage Accuracy Tests
Step Function Range Test DMM Display Reading UUT Display Reading
1 Insulation 500 V 500.0 to 600.0 500 to 600
2 Insulation 1000V 1000.0 to 1200.0 1000 to 1200
1587 FC/1587 Only
3 Insulation 50V 50.0 to 60.0 50 to 60
4 Insulation 100V 100.0 to 120.0 100 to 120
5 Insulation 250V 250.0 to 300.0 250 to 300