Fluke 1550C – Insulation Resistance Tester
The Fluke 1550C is a digital insulation resistance tester designed for insulation measurements up to 5000 V DC. The instrument offers selectable test voltages, automatic calculation of Dielectric Absorption Ratio (DAR) and Polarization Index (PI), as well as capacitance and leakage current measurement. The Fluke 1550C comes with a three-year manufacturer's warranty and specified safety ratings.
Features
- Selection of DC test voltages from 250 V to 5000 V in specified steps
- Automatic calculation of DAR and PI
- Insulation resistance measurement (stated up to 2 TΩ in the product description)
- Capacitance and leakage current measurements
- Warning function for voltage on line up to 600 V ac/dc
- Ramp function for breakdown testing and time control up to 99 minutes
- Guard system to eliminate surface current during high-resistance measurements
- Category safety: CAT III 1000 V and CAT IV 600 V
- Compatible with Fluke Connect for storing and sharing measurements (according to manufacturer documentation)
Typical Applications
The Fluke 1550C is used for insulation measurements on high-voltage equipment, including switchgear, motors, generators, and cables (indicated in the manufacturer's documentation as targets for this tester).
Included Accessories
- Test leads with alligator clips (red, black, green)
- Infrared adapter with interface cable
- AC power cord
- Soft carrying case
Documentation
Further technical details and electrical specifications can be found in the manufacturer's datasheet:
View datasheet from manufacturer
Specifications
- Test voltage (DC): 250 V to 5000 V, selectable in specified steps (50 V steps 250–1000 V, 100 V steps >1000 V) (according to manufacturer documentation)
- Automatic DAR and PI calculation
- Stated insulation resistance: up to 2 TΩ (indicated in product description)
- Capacitance measurement: 0.01 μF to 15.00 μF (indicated in the datasheet for this measurement range)
- Leakage current measurement: 1 nA to 2 mA (indicated in manufacturer documentation)
- Timer: 0 to 99 minutes
- Safety categories: CAT III 1000 V, CAT IV 600 V
- Warranty: 3 years (manufacturer information)
- Included accessories: test leads with alligator clips, infrared adapter with interface cable, AC power cord, soft carrying case
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