Fluke 1537-II - Dielectric Absorption Ratio

13
Insulation Tester
Insulation Test Settings
Dielectric Absorption Ratio
If appropriate, as part of the insulation test, the Tester stores the dielectric
absorption ratio (DAR) with the measurement. A DAR test has a 1-minute duration
and is measured and stored as invalid data for all insulation tests <1 minute. The
DAR test automatically stops when the insulation test time reaches 1 minute. The
results are available for display after test or by storing the test results and viewing
the DAR eld in record. See Figure 6 .
The eld is identied by:
s
R
R
DAR
30
min1

s
R
R
DAR
15
min1

[CN]
The Tester also does the DAR test in accordance with the Chinese standards:
s
R
R
DAR
30
min1

s
R
R
DAR
15
min1

[CN]
Note
If appropriate, as part of the insulation test, the Tester stores the
capacitance measurement. The results are available for display after the
test is complete by viewing the capacitance eld in the stored record.
Figure 6. Dialectric Absorption Ratio
1 min.
1
1x = DAR
30 sec
1 min
R
R
DAR =
2