46 1555 and 1550C Insulation Resistance Testers Powerful troubleshooting and predictive maintenance tools The Fluke 1555 and Fluke 1550C Insulation Resistance Testers offer digital insulation testing up to 10 kV, making them ideal for testing a wide range of high voltage equipment including switchgear, motors, generators and cables. • Test voltages up to 5 kV (1550C) and 10 kV (1555) provide solutions for all applications • Warning function alerts the user that line voltage is present and gives a voltage reading up to 600 V ac or dc for increased user safety • Measurements can be stored in up to 99 memory locations, and each location is assigned a unique, user-defined label for easy recall • Automatic calculation of Dielectric Absorption (DAR) and Polarization Index (PI) with no additional setup • Guard system eliminates the effect of surface leakage current on high-resistance measurements • Capacitance and leakage current measurement • Ramp function for breakdown testing Ordering information Models Included accessories FLUKE-1550C 5 kV Insulation Tester Test leads with alligator clips, infrared adapter with interface cable, FlukeView Forms software, ac power cord, soft carrying case, quick reference guide, users manual FLUKE-1555 10 kV Insulation Tester FLUKE-1550C KIT Test leads with ruggedized alligator clips, infrared adapter with interface cable, FlukeView Forms software, AC power cord, hard carrying case, quick reference guide, users manual, NIST traceable certificate FLUKE-1555 KIT Specifications Test voltage (dc) Range Accuracy (± reading) 250 V < 250 kΩ 250 kΩ to 5 GΩ 5 GΩ to 50 GΩ > 50 GΩ unspecified 5 % 20 % unspecified 500 V < 500 kΩ 500 KΩ to 10 GΩ 10 GΩ to 100 GΩ > 100 GΩ unspecified 5 % 20 % unspecified 1000 V < 1 MΩ 1 MΩ to 20 GΩ 20 GΩ to 200 GΩ > 200 GΩ unspecified 5 % 20 % unspecified 2500 V < 2.5 MΩ 2.5 MΩ to 50 GΩ 50 GΩ to 500 GΩ > 500 GΩ unspecified 5 % 20 % unspecified 5000 V < 5 MΩ 5 MΩ to 100 GΩ 100 GΩ to 1 TΩ > 1 TΩ unspecified 5 % 20 % unspecified 10000 V (1555 only) < 10 MΩ 10 MΩ to 200 GΩ 200 GΩ to 2 TΩ > 2 TΩ unspecified 5 % 20 % unspecified Functions Leakage current 1 nA to 2 mA ± (20 % + 2 nA) Capacitance measurement 0.01 uF to 20.00 µF ± (15 % rdg + 0.03 µF) Live circuit indicator 30 V to 1100 V ac/dc, 50/60 Hz ±(15 % + 2 V) Selection guide 1555 1550C Insulation test voltages: User selectable 250 V to 5000 V • Insulation test voltages: User selectable 250 V to 10,000 V • Insulation resistance 2 TΩ 1 TΩ Auto-discharge of capacitive voltage • • Warranty (years) 3 3 Instrument CarePlan Flexibility for testing wide range of high voltage applications. www.fluke.com/insulationtesters Insulation Resistance Testers INSULATION TESTERS