Product selection guide: Insulation testers

Use our product selection guide to find the insulation tester that fits your needs best.
Fluke 1550C 5 kV Insulation Tester with standard ir3000 FC wireless data connector
Fluke 1587 FC Insulation Multimeter
Fluke 1550C FC 5 kV Digital Insulation TesterFluke 1587 FC Insulation Multimeter
PI/DAR timed ratio test   
Memory storage Through Fluke Connect™ Measurements app 
Insulation test voltagesUser selectable 250 V to 5000 V50 V, 100 V, 250 V, 500 V, 1000 V 
Insulation resistance250 KΩ to 1 TΩ0.01 MΩ to 2 GΩ 
Auto-discharge of capacitive voltage   
Warranty3 years3 years 
Remote probe, test leads, alligator clips   
Rugged, utility hard case   
Auto power off   
Temperature compensationThrough Fluke Connect™ Measurements app 
Insulation test smoothing reading  
Diode test  
Low-pass filter (for work on VSDs)  
AC/DC voltage  
DC millivolts  
AC/DC milliamps  
Resistance0.01 MΩ to 50 MΩ 
Type K thermocouple  
Fluke Connect™ compatible  
Auto / manual ranging  
Basic DC accuracy0.09 % 
True RMS readingsAC 
Wide bandwidth5 kHz 
Capacitance9,999 µF 
Continuity with beeper  
Current AC/DC400 mA 
Diode test  
Frequency99.99 kHz 
Insulation test  
Number of voltage test ranges  
Resistance50 MΩ 
Temperature-40 °C to +537 °C 
Voltage AC/DC1000 V 
WirelessFluke Connect™ enabled 
Display hold  
Min-max recording  
Automatic power off  
Closed case calibration  
Fuse access  
Low battery indication  
Operating temperature range-20 °C to +55 °C 
Removable holster  
Dangerous voltage indication  
EN61010-1 CAT III1000 V 
EN61010-1 CAT IV600 V 
Input alert  
IP ratingIP 40 
Warranty3 years 
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