Other useful features 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 Selectable test voltages in 50 V steps from 250 V to 1000 V, and 100 V steps above 1000 V CAT III 1000 V, CAT IV 600 V safety rating Warning function alerts the user that line voltage is present and gives the voltage reading up to 600 V AC or DC for increased user safety Measurements can be stored in up to 99 memory locations, with each location assigned a unique, user defined, label for easy recall Long battery life gives the user over 750 tests between charges Large digital/analog LCD for easy viewing Capacitance and leakage current measurement Ramp function for breakdown testing Resistance measurements up to 2 TΩ Timer settings up to 99 minutes for timed tests Specifications: Fluke 1550C FC 5 kV Digital Insulation Tester Electrical Specifications The tester’s accuracy is specified for one year after calibration at operating temperatures of 0°C to 35°C. For operating temperatures outside the range (-20°C to 0°C and 35°C to 50°C), add ± .25% per °C, except on the 20% bands add ± 1% per °C. Insulation Resistance Measurement Test voltage (DC) 250 V Range < 250 kΩ, 250 kΩ to 5 GΩ 5 GΩ to 50 GΩ > 50 GΩ Accuracy (± reading) Unspecified 5% 20% Unspecified 500 V Range < 500 kΩ 500 kΩ to 10 GΩ 10 GΩ to 100 GΩ > 100 GΩ Accuracy (± reading) Unspecified 5% 20% Unspecified 1000 V Range < 1 MΩ 1 MΩ to 20 GΩ 20 GΩ to 200 GΩ > 200 GΩ Accuracy (± reading) Unspecified 5% 20% Unspecified 2500 V Range < 2.5 MΩ 2.5 MΩ to 50 GΩ 50 GΩ to 500 GΩ > 500 GΩ Accuracy (± reading) Unspecified 5% 20% Unspecified 5000 V Range < 5 MΩ 5 MΩ to 100 GΩ 100 GΩ to 1 TΩ > 1 TΩ Accuracy (± reading) Unspecified 5% 20% Unspecified Bar graph range 0 to 1 TΩ (1550C) – 0 to 2 TΩ (1555) Insulation test voltage accuracy -0%, 10% at 1 mA load current Induced AC mains current rejection 2 mA maximum Charging rate for capacitive load 5 seconds per μF Discharge rate for capacitive load 1.5 s/μF Leakage current measurement Range 1 nA to 2 mA Accuracy ± (5% 2 nA) Capacitance measurement Range 0.01 μF to 15.00 μF Accuracy ± (15% rdg 0.03 μF) Timer Range 0 to 99 minutes Resolution setting 1 minute Resolution indication 1 second Live circuit warning Warning range 30 V to 660 V AC/DC, 50/60 Hz Voltage accuracy ± (15% 2 V) Software specifications FlukeView Forms™ basic software requires a PC running Windows XP, Windows Vista , Windows 7 or Windows 8. General Specifications Display 75 x 105 mm Power 12 V lead-acid rechargeable battery, Yuasa NP2.8-12 Charger Input (AC) 85 V to 250 V AC 50/60 Hz 20 VA This Class II (double insulated) instrument is supplied with a Class 1 (grounded) power cord. The protective earth terminal (ground pin) is not connected internally. The extra pin is for added plug retention only. Dimensions 269 x 277 x 160 mm (10.6 x 10.9 x 6.3 in) Weight 3.7 kg (8.2 lb) Temperature (operating) -20°C to 50°C (-4°F to 122°F) Temperature (storage) -20°C to 65°C (-4°F to 149°F) Humidity 80% to 31°C decreasing linearly to 50% at 50°C Altitude 2000 m Enclosure sealing IP40 Input overload protection 1000 V AC Electromagnetic compatibility EN 61326 Safety compliance IEC 61010-1: Overvoltage category II, Pollution Degree 2. IEC 61010-2-030: Measurement 600V CAT IV / 1000V CAT III IEC 61557-1, IEC 61557-2
