Product selection guide: Insulation testers

Use our product selection guide to find the insulation tester that fits your needs best.

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	Fluke 1587 FC Insulation Multimeter	Fluke 1550C FC 5 kV Digital Insulation Tester

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Features

PI/DAR timed ratio test
Temperature compensation	Through Fluke Connect™ Measurements app
Memory storage	Through Fluke Connect™ Measurements app
Insulation test voltages	50 V, 100 V, 250 V, 500 V, 1000 V	User selectable 250 V to 5000 V
Insulation resistance	0.01 MΩ to 2 GΩ	250 KΩ to 1 TΩ
Auto-discharge of capacitive voltage
Insulation test smoothing reading
Frequency
Capacitance
Diode test
Temperature
Min-max
Low-pass filter (for work on VSDs)
AC/DC voltage
DC millivolts
AC/DC milliamps
Resistance	0.01 MΩ to 50 MΩ
Continuity
Warranty	3 years	3 years
Remote probe, test leads, alligator clips
Type K thermocouple
Rugged, utility hard case
Auto power off
Fluke Connect™ compatible

Basic features

Auto / manual ranging
Basic DC accuracy	0.09 %
Counts	6000
Digits	3.5
True RMS readings	AC
Wide bandwidth	5 kHz

Measurements

Capacitance	9,999 µF
Continuity with beeper
Current AC/DC	400 mA
Diode test
Frequency	99.99 kHz
Insulation test
Number of voltage test ranges
Resistance	50 MΩ
Temperature	-40 °C to +537 °C
Voltage AC/DC	1000 V

Display

Backlight
Wireless	Fluke Connect™ enabled

Diagnostics and data

Display hold
Min-max recording

Other features

Automatic power off
Closed case calibration
Fuse access
Low battery indication
Operating temperature range	-20 °C to +55 °C
Removable holster
Smoothing

Warranty and safety

Dangerous voltage indication
EN61010-1 CAT III	1000 V
EN61010-1 CAT IV	600 V
Input alert
IP rating	IP 40
Warranty	3 years

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