Fluke 1587 FC Insulation Multimeter - True-RMS Tester

Our review of the Fluke 1587 FC finds it is a purpose-built tool for electricians and maintenance techs who need reliable insulation testing plus a full-featured multimeter in one unit. The single biggest reason to buy is the combined capability: a high-performance DMM and a state-of-the-art insulation tester that also saves and graphs results via the Fluke Connect mobile app, making troubleshooting and preventive maintenance faster and more traceable.

Key Features

• PI/DAR Timed Ratio Tests: Provides Polarization Index and Dielectric Absorption Ratio with Trend It graphs so technicians can identify insulation deterioration trends more quickly.
• Selectable Insulation Voltages: Offers 50 V, 100 V, 250 V, 500 V and 1000 V test voltages so users can match test level to equipment and safety needs.
• True-RMS Multimeter: Delivers accurate voltage and current readings even on non-sinusoidal signals, useful for industrial and motor-drive environments.
• VFD Low-Pass Filter: Includes a low-pass filter for accurate measurements on motor drives and variable frequency drives that would otherwise distort readings.
• Wireless Memory Storage: Stores measurements through the Fluke Connect Measurements App to eliminate manual entry, reduce errors and build historical records.
• Safety and Convenience: Auto discharge of capacitive voltage and temperature compensation via the app help protect the user and improve baseline accuracy.

Who It's For

The Fluke 1587 FC is aimed at commercial electricians, industrial maintenance professionals and predictive maintenance teams who need both a robust insulation tester and a high-quality DMM in one portable instrument. Its PI/DAR trend graphs and app connectivity make it especially useful for those managing asset condition over time.

Technicians who rarely perform insulation testing or who only need a basic handheld DMM may find the 1587 FC more capability than required; hobbyists or infrequent users should consider simpler, lower cost meters instead.

Pros & Cons

Pros

• Combines a high-performance DMM with a full insulation tester for versatile field use.
• PI/DAR timed ratio tests and Trend It graphs speed fault diagnosis and historical comparisons.
• Integration with the Fluke Connect app stores results and applies temperature compensation for accurate baselines.
• VFD low-pass filter ensures accurate readings on motor drives and VFD-equipped equipment.

Cons

• Higher cost compared with basic multimeters, which some buyers described as mixed value for money.
• Advanced features require using the mobile app to get full benefit, which adds a small workflow dependency.

Specifications

Our Verdict

The Fluke 1587 FC is a strong choice for professionals who need accurate insulation testing plus a rugged True-RMS multimeter in one instrument. Its PI/DAR trend features and app-based data logging make it valuable for preventive and predictive maintenance. Though pricier than basic meters, its combined functionality and measurement accuracy make it good value for commercial and industrial users.

Frequently Asked Questions

Does it save test results?
Yes, measurements can be stored and reviewed through the Fluke Connect Measurements App for historical tracking.

Can it measure on VFD-driven motors?
Yes, the built-in low-pass filter enables accurate measurements on motor drives and VFDs.

What insulation voltages are available?
The meter offers selectable insulation test voltages of 50 V, 100 V, 250 V, 500 V and 1000 V.