Fluke 1550C User Manual

Insulation Tester
Measurements
19
3. Push  to call the menu item.
4. Push  or  to select the time.
5. Push  or  to use the settings.  starts the test.
Polarization Index (PI)
As part of the insulation test, the Tester measures and stores polarization index
(PI), when appropriate. A polarization index test requires 10 minutes to
complete. Therefore, the Tester will start a countdown at 10 minutes. When an
insulation test is 10 minutes or more, the polarization test is completed and
stored. The results are available for display during a test by pushing the 
button or by storing the test results and scanning the RESULTS fields. The
field is identified by PI.
min1
min10
×
×
=
R
R
PI
Dielectric Absorption Ratio
As part of the insulation test, the Tester measures and stores dielectric
absorption ratio (DAR), when appropriate. A DAR test requires 1 minute to
complete. Therefore, it is measured and stored as invalid data for all insulation
tests less than 1 minute. When an insulation test is 1 minute or more the DAR
test is included in the results. The results are available for display during a test
by pushing the  button or by storing the test results and scanning the
RESULTS fields. The field is identified by DAR.
sec30
min1
×
×
=
R
R
DAR
Capacitance
As part of the insulation test, the Tester measures and stores capacitance when
appropriate. The results are available for display during a test by pushing the
 button or by storing the test results and scanning the RESULTS fields.
The field is identified by C.

Fluke 1550C Specifications

General

Display type	-
Housing color	Grey, Yellow
Maximum voltage	5000 V
AC voltage range	250 - 5000 V
Operating altitude	0 - 2000 m
Overload protection	Yes
Storage temperature (T-T)	-20 - 65 °C
Operating temperature (T-T)	-20 - 50 °C
Operating relative humidity (H-H)	0 - 80 %
International Protection (IP) code	IP40
Battery technology	Sealed Lead Acid (VRLA)
Number of batteries supported	1

Weight and Dimensions

Depth	277 mm
Width	269 mm
Height	160 mm
Weight	3700 g