Insulation Tester plus full-featured true-RMS DMM


Insulation Multimeter is a high-performance wireless digital insulation tester plus full-featured true-RMS digital multimeter (DMM) combined into one versatile hand-held tool. The wireless 1587 FC provides enhanced versatility for both troubleshooting and preventive maintenance applications.

Technicians can use the tester in conjunction with the free Fluke Connect app to record and store measurement, then combine measurement data from multiple test tools to create and share reports from the job site via email and collaborate in real-time with other colleagues with ShareLive video calls.


  • PI/DAR timed ratio tests
  • Live circuit detection prevents insulation test if voltage > 30 V is detected for added user protection
  • VFD low-pass filter for accurate motor drive measurements
  • Auto-discharge of capacitive voltage for added user protection
  • Insulation test (1587 FC: 0.01 MΩ to 2 GΩ)
  • Insulation test voltages (1587 FC: 50 V, 100 V, 250 V, 500 V, 1000 V) for many applications
  • AC/DC voltage, DC millivolts, AC/DC milliamps, Resistance (Ω), Continuity
  • Capacitance, diode test, temperature, Min/Max, frequency (Hz)
  • Auto power off to save battery power
  • CAT III 1000 V, CAT IV 600 V measurement category
  • Large display with backlight
  • Rugged, utility hard case allows you to bring everything you need for the job
  • Included accessories: Remote probe, test leads and probes, alligator clips, K-type thermocouple
  • Accepts optional Fluke TPAK Magnetic Meter Hanger for convenient hands free operation
  • Three-year standard warranty; extendable to five-years through product registration within 45 days of purchase

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