Fluke 1550C 5 kV Digital Insulation Resistance Tester

  • 3 Year Fluke Warranty
  • Test voltages up-to 5 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
Categories: ,

£2,895.00 exc VAT / £3,474.00 inc VAT

Product price
Additional options total:
Order total:


Fluke 1550C Insulation Resistance Tester (5kV) Details

3 Year Fluke Warranty

Fluke 1550C Product Details:

The Fluke 1550C handles a wide range of high voltage equipment such as switchgear, motors, generators and cables.  Fluke’s 1550C is used for accurately measuring insulation resistance up to 1TΩ with selectable testing voltages of 250V, 500V, 1000V, 2500V and 5000V.

The Fluke 1550C insulation tester can conduct the entire range of test voltages specified in IEEE 43-2000 with a best in class and CAT IV 600 V safety rating. Featuring measurement storage and PC interface, the 1550C is the perfect tool for preventative or predictive maintenance programs designed to identify potential equipment failures before they occur.

The 1550 model is supplied with an IP67 hard case, NIST traceable certificate of calibration and additional rugged crocodile clips.

One greatest features of the Fluke 1550C is actually its portability. The Fluke 1550C is handheld, portable which provides a great solution when out on the field. To complement this the tester has a comfortable grip and includes a large-size LCD screen that makes it easy to read all testing results.


Fluke 1550C Insulation Resistance Tester Key Features:

  • Portable, unique design with large-size digital and analogue display
  • Test voltages of 250V, 500V, 1000V, 2500V and 5000V
  • Measurement range up to 1TΩ
  • Leakage current measurements from 1nA to 2mA
  • Capacitance measurements from 0.01μF to 15μF
  • Built in timer from 0 to 99 minutes
  • Live circuit warning
  • CAT III 1000V and CAT IV 600V safety ratings
  • 99 record memory
  • Automatic calculation of dielectric absorption (DAR and polarisation index (PI)
  • Long battery life lasts for over 750 tests between charger


Full List of Products Included

  • Fluke 1550C Insulation Resistance Tester
  • Test Cables with Alligator Clips (Red, Black and Green)
  • Infrared Adapter with Interface Cable
  • FlukeView Forms Basic CD-ROM
  • AC Power Cord
  • Soft Carrying Case
  • English Manual
  • User Manual on CD-ROM
  • Quick Reference Card
  • Software License Agreement
  • Registration Card
  • FlukeView Forms Installation Guide



Attribute Value
Tester Type Insulation Resistance Tester
Minimum Test Voltage 250V
Maximum Test Voltage 5000V
Maximum Insulation Resistance Measurement 1TΩ
Display Type LCD
Test Current 1 nA → 2 mA
Battery Life 750 Tests
Minimum Operating Temperature -20°C
Maximum Operating Temperature +50°C
Power Source Battery
Safety Category Level CAT III, CAT IV
Safety Category Voltage 600 V, 1000 V
Safety Category CAT III 1000 V, CAT IV 600 V
Height 160mm
Width 269mm
Dimensions 277 x 269 x 160mm
Weight 3.7kg
Model Number p 1550C
Battery Type Rechargeable Lead Acid (Yuasa NP2.8-12)
Length 277mm


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
500 V Range < 500 kΩ 500 kΩ to 10 GΩ 10 GΩ to 100 GΩ > 100 GΩ
Accuracy (± reading) Unspecified
1000 V Range < 1 MΩ 1 MΩ to 20 GΩ 20 GΩ to 200 GΩ > 200 GΩ
Accuracy (± reading) Unspecified
2500 V Range < 2.5 MΩ 2.5 MΩ to 50 GΩ 50 GΩ to 500 GΩ > 500 GΩ
Accuracy (± reading) Unspecified
5000 V Range < 5 MΩ 5 MΩ to 100 GΩ 100 GΩ to 1 TΩ > 1 TΩ
Accuracy (± reading) 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

Additional information

Weight 4000 g


There are no reviews yet.

Be the first to review “Fluke 1550C 5 kV Digital Insulation Resistance Tester”

Your email address will not be published. Required fields are marked *

Contact Us banner service team