Fluke 1550C
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$2.590
The Fluke 1550C is a high-voltage digital insulation resistance tester capable of testing up to 5,000 V, ideal for motors, cables, switchgear, and other high-voltage equipment. Trusted by professionals for predictive maintenance and safety assurance.
Fluke 1550C Insulation Resistance Tester.
The Fluke 1550C insulation resistance tester offers digital insulation testing up to 5 kV, making them ideal for testing a wide range of high voltage equipment including switchgear, motors, generators and cables.
Fluke insulation testers can now conduct the entire range of test voltages specified in IEEE 43-2000 with a best in class, 3 year warranty and CAT IV 600 V safety rating. With measurement storage and PC interface, the 1550C is the perfect tool for preventive or predictive maintenance programs designed to identify potential equipment failures before they occur.
Looking to compare insulation testers or alternative calibration instruments? See our article: Comparing Fluke vs Additel Loop Calibrators: 2025 Buying Guide for Precision, Performance, and Value
Key Features
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Wide Voltage Range: Selectable test voltages from 250 V to 5,000 V, in 50 V or 100 V steps
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Data Logging: Stores up to 99 test results, each with customizable labels
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High Resistance Measurement: Up to 2 TΩ
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Ramp Function: For controlled breakdown testing
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DAR & PI Calculation: Automatically measures Dielectric Absorption Ratio and Polarization Index
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Live Circuit Detection: Alerts user to presence of voltages up to 600 V AC/DC
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Surface Leakage Rejection: Integrated guard system improves high-resistance accuracy
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Battery Life: Performs over 750 insulation tests per charge
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Display: Large dual digital/analog LCD display for clear readouts
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Certified Safety: CAT IV 600V, CSA approved, and IP40 rated
Why Choose the Fluke 1550C?
This tester stands out for its comprehensive features, rugged build, and reliability in field conditions. Whether used in heavy industries, utilities, or service companies, the 1550C delivers consistent results and simplifies insulation diagnostics.
For other related tools, browse our Megohmmeters and Insulation Testers category or explore complementary Electrical Test Instruments.
What’s Included
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Fluke 1550C main unit
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Test cables with heavy-duty alligator clips (red, black, green)
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USB-IR cable & FlukeView® Forms software CD
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Infrared adapter and interface cable
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AC charging power cord
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Soft carrying case
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English printed manual & CD-ROM manual
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Quick reference card
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Software license agreement
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FlukeView® Forms installation guide
Technical Specifications
| Parameter | Details |
|---|---|
| Test Voltages | 250 V, 500 V, 1,000 V, 2,500 V, 5,000 V |
| Max Resistance | 2 TΩ |
| Min Resistance | 200 kΩ |
| Display Type | Digital LCD (75 mm x 105 mm) |
| Voltage Detection | Yes (up to 600 V AC/DC) |
| DAR & PI Calculations | Included |
| Timer | Yes (up to 99 minutes) |
| Data Storage | 99 memory locations |
| Interfaces | IR, USB |
| Power Source | 12V Lead-acid rechargeable battery (Yuasa NP2.8-12) |
| Charger Input | 85 V AC, 50/60 Hz, 20 VA |
| IP Rating | IP40 |
| Safety Rating | CAT IV 600 V, CSA Approved |
| Weight | 8.2 lbs (3.7 kg) |
| Dimensions (L x W x H) | 10.6 in x 10.9 in x 6.3 in |
| Warranty | 3 Years |
Applications
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High-voltage insulation testing
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Predictive maintenance in industrial facilities
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Electric motor and cable integrity testing
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Power utility and substation diagnostics
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Safety testing during commissioning or repairs
