Pi (polarization index
measurement)
judgement standard
DAR (absorption ratio
measurement)
10-minute insulation resistance value /
1-minute insulation resistance value
＞ OR = 4 4——2
2.0——1.0
＜ OR = 1
best good warning bad
1-minute insulation resistance /
30-seconds insulation resistance
1-minute insulation resistance /
15-seconds insulation resistance
1.25——1.0
Pi (polarization index
measurement)
DAR (absorption ratio
measurement)
DAR (absorption ratio
measurement)
judgement standard
＞ OR = 1.4 ＜ OR = 1
best
good
bad
CON TINUI TY
AC. V
HOLD/
PRESS TO T EST
LOC K
<600V
R
CON TINUI TY
AC. V
HOLD/
<600V
CON TINUI TY
AC. V
HOLD/
PRESS TO T EST
LOC K
<600V
CON TINUI TY
AC. V
HOLD/
<600V
Note: This instrument is equipped with a 10MΩ precision resistor for
self-test.
Connect test lead to LINE and V holes, and twist the knob to any range of
the insulation measurements. Press "TEST" button, and the screen will
display 10.0MΩ, as shown below:
-12- -13-
0
O
D
I
S
C
H
U
T
A
A
R
G
E
0
O
D
I
S
C
H
U
T
A
A
R
G
E
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