Powerful insulation testers for troubleshooting and preventive maintenance applications

NEW FROM FLUKE: The Fluke 1587 FC Insulation Multimeter. The 1587FC combines a digital insulation tester with a full-featured, true-rms digital multimeter in a single compact, handheld unit.

Whether you work on motors, generators, cables or switch-gear, the Fluke Insulation Resistance testers are the ideal solution for maintaining the uptime of your electrical equipment. They are designed to be safe, simple to use and provide you noise-free, reliable results.

Watch the new Fluke 1587FC

6 steps to choose an insulation resistance tester

Trying to decide on an insulation resistance tester? Not sure exactly which model, what features, or what output test voltage is needed? Take a look at our 6 steps approach.

Download guide

Insulation resistance and electrical testing for HVAC compressor motors

An insulation resistance tester (IRT) supplies “non destructive” DC voltages to the windings and insulation points of a motor to measure the current leakage rate. Find out how IRT can help your daily testing.

Download application note

Powerful insulation testers for troubleshooting and
preventive maintenance applications

Fluke 1587
Insulation Multimeter

Fluke 1587 Insulation Multimeter

  • Two powerful tools in one digital insulation tester with a full-featured, true RMS digital multimeter in a single, compact, handheld unit
  • Maximum versatility for troubleshooting and preventive maintenance.
  • Also available with Fluke Connect® (Fluke 1587FC)

Where to buy

Fluke 1507
Insulation tester

Fluke 1507 Insulation tester

  • Compact, rugged, reliable, and easy to use.
  • Multiple test voltages
  • Ideal for troubleshooting, commissioning, and preventative maintenance applications.
  • Remote probe on this tool save both time and money when performing tests.

Where to buy


Fluke 1550C
Insulation Resistance tester

Fluke 1550C Insulation Resistance tester

  • Digital insulation testing up to 5kV
  • Ideal for testing high voltage equipment: switch gear, motors, and cables.

Where to buy

Which insulation resistance tester is right for you?

  • Fluke Connect enabled
  • Test voltages
  • AC/DC Volts
  • Current
  • Temperature (contact)
  • Diode test
  • Hold/Lock
  • Backlight

Select at least three criteria


Reduce your workplace environment risks with our safety programs.

FLUKE safety programs


Work accurately and get the most out of your test tools with our certified training.

FLUKE training


Try out our products with virtual demos before you buy.

FLUKE virtual demos

Where to buy

You can always turn to our Distributors and Service Centers for local assistance.
They’ll help you with traceability, calibration, repair, and self maintenance.

Find your distributor

Check out all Fluke promotions

Do you want to do troubleshooting before you use the Installation Tester?

You can measure voltage without test leads with our new T6 Electrical Tester.

Learn more