Fluke – Insulation Resistance Testers (Model 1555)

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 Features include:

  • Test voltages to up 10 kV and save time by trending on the spot only with Fluke Connect™
  • 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
  • Selectable test voltages in 50 V steps from 250 V to 1000 V, and 100 V steps above 1000 V
  • 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
  • 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
  • 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
  • 3-year warranty

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) Range Accuracy (± reading)
250 V < 200 kΩ Unspecified
200 kΩ to 5 GΩ 5 %
5 GΩ to 50 GΩ 20 %
> 50 GΩ Unspecified
500 V < 500 kΩ Unspecified
500 kΩ to 10 GΩ 5 %
10 GΩ to 100 GΩ 20 %
> 100 GΩ Unspecified
1000 V < 200 kΩ Unspecified
200 kΩ to 20 GΩ 5 %
20 GΩ to 200 GΩ 20 %
> 200 GΩ Unspecified
2500 V < 200 kΩ Unspecified
200 kΩ to 50 GΩ 5 %
50 GΩ to 500 GΩ 20 %
> 500 GΩ Unspecified
5000 V < 200 kΩ Unspecified
200 kΩ to 100 GΩ 5 %
100 GΩ to 1 TΩ 20 %
> 1 TΩ Unspecified
10000 V (1555 Only) < 200 kΩ Unspecified
200 kΩ to 200 GΩ 5 %
200 GΩ to 2 TΩ 20 %
> 2 TΩ 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, 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 mm 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 mm x 277 mm x 160 mm (10.6 in x 10.9 in x 6.3 in)
Weight 3.7 kg (8.2 lb)
Temperature (operating) -20 ºC to 50 ºC (-4 ºF to 122 ºF)
Temperature (storage) -20 ºC to 65 ºC (-4 ºF to 149 ºF)
Humidity 80 % to 31 ºC decreasing linearly to 50 % at 50 ºC
Altitude 2000 m
Enclosure sealing IP40
Input overload protection 1000 V AC
Electromagnetic compatibility EN 61326
Certifications Fluke 1550c Certifications
Safety compliance IEC 61010-1: Overvoltage category II, pollution degree 2
IEC 61010-2-030: Measurement 600V CAT IIV / 1000V CAT III
IEC 61557-1, IEC 61557-2
Fluke Connect™ compatible Yes
 

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