Fluke 1550C 5kV Insulation Resistance Tester

  • Tests insulation up to 5 kV DC
  • Real-time data via Fluke Connect
  • Resistance up to 2 TΩ measurable
  • Built-in timer and leakage current
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We offer a Price Match Promise! Find an equivalent tester for a cheaper price on a competitor site, and we’ll do our best to match it

Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

From £3,623.63 (ex VAT)

£4,348.36 (inc VAT)

Earn 3623 – 3653 points

Usually Ships In 6 to 13 Business Days
  • Tests insulation up to 5 kV DC
  • Real-time data via Fluke Connect
  • Resistance up to 2 TΩ measurable
  • Built-in timer and leakage current
Free Shipping

Spend over £100 on any new goods order and receive automatic free shipping

Rewards

Points make purchases! For every £1 spent, earn back 1p that can be spent on any future new goods purchase

Our Price Promise

We offer a Price Match Promise! Find an equivalent tester for a cheaper price on a competitor site, and we’ll do our best to match it

Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

From £3,623.63 (ex VAT)

£4,348.36 (inc VAT)

Earn 3623 – 3653 points

Usually Ships In 6 to 13 Business Days
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Fluke 1550C 5kV Insulation Resistance Tester

The Fluke 1550C 5kV Insulation Resistance Tester delivers advanced digital insulation testing up to 5000 V, bringing together safety and ease of use. With Fluke Connect™ wireless setup, you can use the device from a distance and see live trends directly on your phone. This lowers time spent in risky areas while showing clear test results.

You can check insulation performance easily thanks to the tester’s big screen and charting feature. Also, ready-made templates let you make reports quickly with company logos. The tester saves up to 99 named results, keeping records neat and clear.

Accurate and Efficient Measurements

This tester supports a wide voltage range from 250 V to 5000 V, in user-selectable steps. It also features a guard system to eliminate surface leakage effects, and includes DAR and PI calculations without extra configuration. Its ramp function allows you to perform insulation breakdown tests efficiently.

Built for Demanding Environments

With a rugged IP40-rated enclosure, long battery life and 3-year warranty, the Fluke 1550C 5kV is ideal for preventive and predictive maintenance. It meets IEC safety standards and withstands operating temperatures from -20°C to 50°C. Whether you work in utilities, industrial settings or field maintenance, this tester is built to perform.

Key Features
  • Measures insulation resistance up to 2 TΩ
  • Selectable voltages from 250 V to 5000 V
  • Fluke Connect enables remote test operation
  • Trend graphs available in real time via mobile
  • Generates customisable reports with branding
  • Calculates DAR and PI automatically
  • Built-in guard system for more accurate readings
  • Large LCD with digital and analogue scale
  • Leakage current and capacitance measurement
  • 99 user-labelled memory storage slots
  • Timer setting from 0 to 99 minutes
  • Meets CAT IV 600 V and CAT III 1000 V standards
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Fluke 1550C 5kV Insulation Resistance Tester

The Fluke 1550C 5kV Insulation Resistance Tester delivers advanced digital insulation testing up to 5000 V, combining safety and convenience. With Fluke Connect™ wireless capability, you can operate the device remotely and view real-time trends directly on your phone. This reduces time in hazardous areas while providing clear visual test data.

You can monitor insulation performance easily thanks to the tester’s large display and graphing capability. Additionally, pre-built templates let you generate reports quickly with professional branding. The tester stores up to 99 labelled results, making recordkeeping simple and organised.

Accurate and Efficient Measurements

This tester supports a wide voltage range from 250 V to 5000 V, in user-selectable steps. It also features a guard system to eliminate surface leakage effects, and includes DAR and PI calculations without extra configuration. Its ramp function allows you to perform insulation breakdown tests efficiently.

Built for Demanding Environments

With a rugged IP40-rated enclosure, long battery life and 3-year warranty, the Fluke 1550C 5kV is ideal for preventive and predictive maintenance. It meets IEC safety standards and withstands operating temperatures from -20°C to 50°C. Whether you work in utilities, industrial settings or field maintenance, this tester is built to perform.

Key Features
  • Measures insulation resistance up to 2 TΩ
  • Selectable voltages from 250 V to 5000 V
  • Fluke Connect enables remote test operation
  • Trend graphs available in real time via mobile
  • Generates customisable reports with branding
  • Calculates DAR and PI automatically
  • Built-in guard system for more accurate readings
  • Large LCD with digital and analogue scale
  • Leakage current and capacitance measurement
  • 99 user-labelled memory storage slots
  • Timer setting from 0 to 99 minutes
  • Meets CAT IV 600 V and CAT III 1000 V standards

 

Technical Specifications
SpecificationDetails
Test voltage range250 V to 5000 V DC (50 V steps to 1000 V, 100 V steps above)
Insulation resistance measurementUp to 2 TΩ depending on test voltage
Measurement range (at 5000 V)<5 MΩ to >1 TΩ
Accuracy at key ranges (5000 V)5% (up to 100 GΩ), 20% (up to 1 TΩ), unspecified above
Leakage current measurement1 nA to 2 mA, ±(5% + 2 nA)
Capacitance measurement0.01 µF to 15.00 µF, ±(15% reading + 0.03 µF)
Live circuit warning range30 V to 660 V AC/DC, 50/60 Hz
Voltage accuracy (warning function)±(15% + 2 V)
Charging rate for capacitive load5 seconds per µF
Discharge rate for capacitive load1.5 seconds per µF
Insulation test voltage accuracy-0%, +10% at 1 mA load current
Induced AC mains current rejection2 mA maximum
Timer range0 to 99 minutes
Timer resolution1 minute setting, 1 second indication
Display size75 x 105 mm
Power supply12 V lead-acid rechargeable battery (Yuasa NP2.8-12)
AC charger input85 V to 250 V AC, 50/60 Hz, 20 VA
Weight3.7 kg (8.2 lb)
Dimensions (L x W x H)269 x 277 x 160 mm (10.6 x 10.9 x 6.3 in)
Operating temperature-20°C to 50°C
Storage temperature-20°C to 65°C
Humidity tolerance80% to 31°C, decreasing linearly to 50% at 50°C
Maximum altitude2000 m
Enclosure sealingIP40
Input overload protection1000 V AC
Electromagnetic compatibilityEN 61326
Safety complianceIEC 61010-1, IEC 61010-2-030, IEC 61557-1, IEC 61557-2
Memory locationsStores up to 99 results with user-defined labels
Warranty3 years
Manufacturer part code4977402
What’s Included
  • Fluke 1550C 5kV Insulation Resistance Tester
  • Rechargeable 12 V lead-acid battery
  • AC charging cable (85 V to 250 V)
  • Instruction manual
  • Warranty documentation

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