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Fluke 1550C/KIT Insulation Resistance Tester Kit, 5 kV

Model: 1550C/KIT

Ideal for preventive or predictive maintenance programs, this insulation resistance tester identifies potential equipment failures before they occur. This tool is Fluke Connect compatible tests digital insulation up to 5 kV. Additionally, it comes equipped with a certificate of calibration.

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2 to 3 Weeks

$5,199.99 USD

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Evaluate the trends, eliminate the doubt

Test up to 5 kV and makes data collection easy due to its compatibility with the Fluke Connect™ wireless application. This insulation meter is ideal for testing a wide range of high voltage equipment including switchgear, motors, generators, and cables.

Conduct the entire range of test voltages specified in IEEE 43-2000 with a best in class and CAT IV 600 V safety rating. With measurement storage and PC interface, it is ideal for preventative or predictive maintenance programs designed to identify potential equipment failures before they occur.


  • Quickly configure, start, and stop tests remotely, a safe distance away from any operating, energized equipment, using Fluke Connect® and a smartphone
  • Real time trending gives you easy-to-see visual cues, rather than hard to read, rapidly changing values
  • 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 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


  • High voltage
  • Preventive maintenance programs
  • Predictive maintenance programs
6 Tips for effective insulation testing

Disconnect any electronic devices like motor drives, PLC’s, transmitters, etc. before performing insulation testing. Electronics can be damaged by applying higher than normal voltage.


The effect of temperature should be considered - it is recommended that tests be performed at a standard conductor temperature of 20 °C (68 °F) or that a temperature baseline is established while compensating future readings by using a DMM with a probe or an infrared thermometer.


Select a test voltage appropriate for the insulation being tested. The objective is to stress the insulation but not to over-stress it. When in doubt, use a lower test voltage. It’s usually appropriate to test insulation at twice the voltage it normally sees: for example 460 V to 600 V rated equipment is often tested at 1000 V.


When using an insulation tester, leave the leads connected when you stop the test. The insulation tester can discharge any residual test voltage.


Conductors that are close to each other have a normal capacitance. This will cause an insulation resistance reading to start low and increase steadily until it stabilizes. This type of increase is normal, but if the reading jumps violently down and up again this indicates arcing.


Although the current is tightly limited, an insulation tester can generate sparks and minor but painful burns. The unexpected surprise can cause an operator to jerk away. As always, work away from live systems and use safe work practices when working overhead.

Insulation Resistance Testing Solutions

Fluke 1550C/KIT Specifications

Test Voltage (DC) 250 V
Range <250 kΩ
250 kΩ to 5 GΩ
5 to 50 GΩ
>50 GΩ
Accuracy (± Reading) Unspecified
Test Voltage (DC) 500 V
Range <500 kΩ
500 kΩ to 10 GΩ
10 to 100 GΩ
>100 GΩ
Accuracy (± Reading) Unspecified
Test Voltage (DC) 1000 V
Range <1 MΩ
1 MΩ to 20 GΩ
20 to 200 GΩ
>200 GΩ
Accuracy (± Reading) Unspecified
Test Voltage (DC) 2500 V
Range <2.5 MΩ
2.5 MΩ to 50 GΩ
50 to 500 GΩ
>500 GΩ
Accuracy (± Reading) Unspecified
Test Voltage (DC) 5000 V
Range <5 MΩ
5 MΩ to 100 GΩ
100GΩ to 1 TΩ
>1 TΩ
Accuracy (± Reading) Unspecified
Insulation Resistance Measurement
Bar Graph Range 0 to 1 TΩ
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 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 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 2.95 x 4.13" (75 x 105 mm)
Power 12 V lead-acid rechargeable battery, Yuasa NP2.8-12
Charger Input (AC) 85 to 250 V AC 50/60 Hz 20 VA
Operating Temperature -4 to 122°F (-20 to 50°C)
Storage Temperature -4 to 149°F (-20 to 65°C)
Humidity 80% to 88°F (31°C) decreasing linearly to 50% at 122°F (50°C)
Altitude 6561.7' (2000 m)
Enclosure Sealing IP40
Input Overload Protection 1000 V AC
Electromagnetic Compatibility EN 61326
Dimensions 10.6 x 10.9 x 6.3" (269 x 277 x 160 mm)
Weight 8.2 lbs (3.7 kg)
Click here for complete specifications on the Fluke 1550C/KIT

What's included with the Fluke 1550C/KIT

  • Insulation Resistance Tester
  • Certificate of Calibration
  • Test Cables with Alligator Clips
  • Infrared Adapter with Interface Cable
  • Heavy Duty Alligator Clip Leads
  • Carrying Case
  • AC Power Cord
  • English Manual
  • Users Manual on CD-ROM
  • Quick Reference Card
  • Software License Agreement
  • Registration Card
  • FlukeView® Forms Installation Guide
  • USB-IR Cable Installation Guide
  • FlukeView® Forms Basic CD-ROM
Fluke 1587 FC Insulation Multimeter Fluke 1577 Insulation Multimeter Fluke 1503 Insulation Resistance Meter Fluke 1507 Insulation Resistance Tester Fluke 1550C Insulation Resistance Tester Fluke 1555 Insulation Resistance Tester
Two in one tools Stand-alone tools
Insulation test features 1587 FC 1577 1503 1507 1550C 1555
Test voltages 50 V, 100 V, 250 V, 500 V, 1000 V 500 V, 1000 V 500 V, 1000 V 50 V, 100 V, 250 V, 500 V, 1000 V 250 V to 5000 V 250 V to 10,000 V
Insulation resistance range 0.01 MΩ to 2 GΩ 0.01 MΩ to 600 GΩ 0.01 MΩ to 2000 GΩ 0.01 MΩ to 10 GΩ 250 kΩ to 1 TΩ 250 kΩ to 2 TΩ
Auto discharge
Timed ramp test (Breakdown)
Pass/fail comparison
Est. # of IRT tests 1000 1000 2000 2000 Various Various
Voltage > 30 V warning
Memory With Fluke Connect App
Remote test probe
Lo ohms/earth-bond continuity 200 mA source (10 mΩ resolution) 200 mA source (10 mΩ resolution)
Display Digital LCD Digital LCD Digital LCD Digital LCD Digital LCD/ analog display Digital LCD/ analog display
Multimeter features
AC/DC volts

Note: Not all product features and specifications are listed in this table. For more complete information, see individual product data sheets.

1. Function useful for checking connections and motor windings. Also useful for users who are required to perform earth-bond continuity measurements during installation testing.
2. Filter for variable-speed motor drive measurements.

Continuity beeper
Temperature (contact)
Lo-pass filter2
Diode test
Other features
Software Fluke Connect compatible FlukeView® Forms Basic Fluke View® Forms Basic
Battery 4 AA (NEDA 15A or IEC LR6) 4 AA (NEDA 15A or IEC LR6) 4 AA (NEDA 15A or IEC LR6) 4 AA (NEDA 15A or IEC LR6) Rechargeable Rechargeable
Find out more about insulation testing
This product features Fluke Connect Technology

See it. Save it. Share it. All the facts, right in the field.

Fluke engineers have delivered an innovative mobile platform and tool that helps solve everyday problems, allowing you to instantly document measurements, retrieve historical data, and share live measurements with your team. All handled by the Android™ or iOS smart phone you already carry.

Fluke Connect with ShareLive™ video call is the only wireless measurement system that lets you stay in contact with your entire team without leaving the field. The Fluke Connect mobile app is works with over 20 different Fluke products - the largest suite of connected test tools in the world.

Make the best decisions faster than ever before by viewing temperature, mechanical, electrical and vibration measurements for each equipment asset in one place. Get started saving time and increasing your productivity.

Fluke Connect Features:

  • TrendIt™ Graphs: Use graphing to show changes in measurements, allowing you to graph and show problems instantly.
  • EquipmentLog™ History: Access equipment history building a database of equipment health and baselines with cloud backup.
  • ShareLive™ Video Calls: Save, collaborate and share measurements instantly with your team anytime, from anywhere.
  • AutoRecord™ Measurements: Instantly save measurements to your phone with Cloud backup.
  • Fluke Cloud™ Storage: Securely access equipment records anywhere, anytime.

Fluke Connect Benefits:

  • Maximize uptime
  • Minimize maintenance costs
  • Better assessments with accurate records
  • Higher efficiency with less walking around; no notebook and excel needed
  • Share troubleshooting knowledge live
  • Create and share helpful content in the field
  • Access to Fluke digital product manuals means no need to carry manuals in the field
  • Keep organized manually entered measurements


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Customer Reviews for the Fluke 1550C/KIT