User Guide

11
IRT803
OFF
ZERO
ZERO
FUSED
V
Ω
COM
INSULATION
V
1000V
500V
250V
100 V
I
N
S
U
L
A
T
I
O
N
T
E
S
T
E
R
600V
CAT IV 600V
CAT III 1000V
COMPARE
LOCK
PI/DAR
TEST
SELECT
HOLD
Apo
V
IRT803
0 0.1 M 1 M 10 M 100 M 1 G 20 G
V
DC
G
RUN TIME : m s
Polarization Index & Dielectric Absorption Ratios (1000V, 500V, 250V, 100V)
• Default =
TEST
PI/DAR
• Press X1 =
• Press X2 =
OFF
1000V
500V
250V
100 V
V
ZERO
OFF
1000V
500V
250V
100 V
V
ZERO
OFF
1000V
500V
250V
100 V
V
ZERO
Polarization Index (PI) is the ratio of the 10-minute insulation resistance to the 1-minute insulation resistance. Dielectric
Absorption Ratio (DAR) is the ratio of the 1-minute insulation resistance to the 30-second insulation resistance.
Features:
LOCK
PI/DAR
TEST
• Because of the time required for the PI and DAR tests, alligator clips are recommended.
• Use rotary selector dial to select desired test voltage.
• The display will show “----” until test starts.
• The High Voltage symbol will display if greater than 30V AC or DC is present.
• Press and hold the Test Button on the Meter or Remote Probe to start the test.
Note: When the resistance is higher than the maximum display range the tester displays the > symbol and the maximum
resistance for the range.
WARNING
NEVER measure resistance on a live circuit.