Fluke 1550C – 5kV Digital Insulation Resistance Tester

High-Voltage Insulation Testing with 1 TΩ Range and Fluke Reliability

Product Overview:
The Fluke 1550C is a powerful, rugged digital insulation resistance tester that provides test voltages up to 5,000 V and insulation resistance measurement up to 1 TΩ. Built for industrial, utility, and commercial applications, this tester is ideal for assessing insulation integrity in motors, transformers, switchgear, and high-voltage cables.

It includes automated Polarization Index (PI) and Dielectric Absorption Ratio (DAR) testing, wireless data transfer, and Fluke Connect® compatibility for real-time mobile logging and reporting. With a large digital display, timer control, and internal memory, the 1550C offers both field ruggedness and data traceability for compliance and maintenance programs.

Key Features:

• Selectable Test Voltages: 250 V to 5000 V in 50 V increments

• Insulation Resistance Range: Up to 1 TΩ (1,000 GΩ)

• PI & DAR Testing with automatic calculation

• Wireless Fluke Connect® App Support for remote monitoring and saving results

• Internal Memory for Up to 99 Measurements

• Large Backlit LCD with Analog-Style Bar Graph

• Guard Terminal for Eliminating Surface Leakage Errors

• CAT III 1000 V / CAT IV 600 V Safety Rated

Best For:

• High-voltage electrical maintenance and diagnostics

• Power utility substations and switchyards

• Industrial motor and transformer testing

• Field service professionals needing wireless data access

What’s Included:

• Fluke 1550C Insulation Tester

• Test leads with clips and probes

• Hard carrying case

• Fluke Connect® software/app access

• User manual

• Batteries (installed)

🔍 How It Compares: