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High Voltage Insulation Testers & Megohmmeters

Insulation breakdown isn't just inconvenient - it's highly dangerous. These high voltage insulation testers verify the insulation of an electrical installation to see if action must be taken to prevent dangerous electrical incidents. Read More about High Voltage Insulation Testers & Megohmmeters
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38 Products
  1. Kewtech KEW3125B High Voltage Insulation Tester (5kV)
    Kewtech logo
    2 In Stock
    Free UK Delivery
    Kewtech KEW3125B High Voltage Insulation Tester (5kV)
    (no reviews)
    £838.80 £699.00
    • The UK's smallest and lightest high voltage insulation tester
    • Selectable test voltages to 5000V (5kV)
    • Measure insulation resistance to 1TΩ, plus perform DAR and PI testing
    699 Reward Points
    Price Match Guarantee
    KEWIT3
  2. Megger MIT2500 Industrial/Utility High Voltage Insulation Tester-2.5kV
    Megger logo
    5 In Stock
    Free UK Delivery
    Megger MIT2500 Industrial/Utility High Voltage Insulation Tester-2.5kV
    (no reviews)
    £1,018.80 £849.00
    • Handheld, portable insulation tester
    • Variable test voltage from 50 to 2500V
    • Memory storage with Bluetooth wireless connection
    849 Reward Points
    Price Match Guarantee
    1004-745
  3. Fluke 1535 Insulation Resistance Tester & Megohmmeter
    Fluke logo
    Free UK Delivery
    Fluke 1535 Insulation Resistance Tester & Megohmmeter
    (no reviews)
    £1,422.00 £1,185.00
    • Selectable test voltage: 250 V, 500 V, 1000V, and 2500V
    • Insulation resistance: up to 500 GΩ
    • Automatic PI and DAR calculations
    1185 Reward Points
    Price Match Guarantee
    5592398
  4. Metrel MI3202 GigaOhm 5Kv Insulation Tester
    Metrel logo
    Lead Time: 2-3 Weeks
    Free UK Delivery
    Metrel MI3202 GigaOhm 5Kv Insulation Tester
    (no reviews)
    £1,543.20 £1,286.00
    • Insulation testing up to 5kV
    • Large LDC display
    • Compatible with PC
    1286 Reward Points
    Price Match Guarantee
    MI3202
  5. HD Electric PT-5000W High Voltage DC Leakage Tester
    HD Electric Company logo
    Free UK Delivery
    HD Electric PT-5000W High Voltage DC Leakage Tester
    (no reviews)
    Call for Pricing
    • Check de-energised and discharged primary and secondary voltage insulation systems and components
    • Two test voltages: 500 VDC and 5000 VD
    • Pressing and holding pushbuttons to issue the required test voltage prevents accidental operation
    We require additional information before you purchase this product.
    HD-PT-5000W
  6. Metrel MI3201 TeraOhm 5Kv Plus Insulation Tester
    Metrel logo
    Free UK Delivery
    Metrel MI3201 TeraOhm 5Kv Plus Insulation Tester
    (no reviews)
    £1,848.00 £1,540.00
    • Digital insulation testing up to 5kV
    • LCD screen and real-time graphs
    • Device storage and PC download
    1540 Reward Points
    Price Match Guarantee
    MI3201
  7. Chauvin Arnoux CA6505 Digital Megohmmeter
    Chauvin Arnoux logo
    Lead Time: 1-6 Days
    Free UK Delivery
    Chauvin Arnoux CA6505 Digital Megohmmeter
    (no reviews)
    £2,064.00 £1,720.00
    • Insulation resistance measurements to 10TΩ
    • 5100V voltage measurements
    • Polarisation index and DAR
    1720 Reward Points
    Price Match Guarantee
    P01139704
  8. Chauvin Arnoux CA6545 Digital Megohmmeter
    Chauvin Arnoux logo
    Free UK Delivery
    Chauvin Arnoux CA6545 Digital Megohmmeter
    (no reviews)
    £2,154.00 £1,795.00
    • Contains numerous programmable functions
    • Fixed voltage tests
    • Generously-sized LCD display with bar graph
    1795 Reward Points
    Price Match Guarantee
    P01139701
  9. Fluke 1537 Insulation Resistance Tester & Megohmmeter
    Fluke logo
    Lead Time: 2-3 Weeks
    Free UK Delivery
    Fluke 1537 Insulation Resistance Tester & Megohmmeter
    (no reviews)
    £2,386.80 £1,989.00
    • Adjustable test voltage from 250 V to 2500 V in 100 V increments
    • Insulation resistance: up to 500GΩ
    • Automatic PI, DAR, & DD calculations & Ramp Test mode
    1989 Reward Points
    Price Match Guarantee
    5592405
  10. Metrel MI3205 TeraOhm XA 5kV High Voltage Insulation Tester
    Metrel logo
    Free UK Delivery
    Metrel MI3205 TeraOhm XA 5kV High Voltage Insulation Tester
    (no reviews)
    £2,426.40 £2,022.00
    • Perform high voltage diagnostics on a wide variety of equipment
    • Test voltage to 5kV
    • Memory storage with download to PC
    2022 Reward Points
    Price Match Guarantee
    MI3205-X
  11. Chauvin Arnoux CA6547 Digital Megohmmeter
    Chauvin Arnoux logo
    Lead Time: 1-2 Weeks
    Free UK Delivery
    Chauvin Arnoux CA6547 Digital Megohmmeter
    (no reviews)
    £2,718.00 £2,265.00
    • Memory storage and download functions
    • Wide insulation resistance range from 30kΩ to 10TΩ
    • 4 fixed testing voltages of 500, 1000, 2500 and 5000V
    2265 Reward Points
    Price Match Guarantee
    P01139702
  12. Megger MIT515 5kV Insulation Resistance Tester
    Megger logo
    In Stock
    Free UK Delivery
    Megger MIT515 5kV Insulation Resistance Tester
    (no reviews)
    £2,992.80 £2,494.00
    • Megger's entry-level HV insulation resistance tester
    • Test resistance levels to 10TΩ
    • IR, PI and DAR diagnostic testing
    2494 Reward Points
    Price Match Guarantee
    1001-935
  13. Metrel MI3210 TeraOhm XA 10kV High Voltage Insulation Tester
    Metrel logo
    Free UK Delivery
    Metrel MI3210 TeraOhm XA 10kV High Voltage Insulation Tester
    (no reviews)
    £3,228.00 £2,690.00
    • Measure insulation resistance and perform diagnostic testing on high voltage systems
    • Adjustable test voltage up to 10kV
    • Built-in memory storage with download to PC
    2690 Reward Points
    Price Match Guarantee
    MI3210-X
  14. Metrel MI3209 TeraOhmLT 10kV High Voltage Insulation Tester
    Metrel logo
    Free UK Delivery
    Metrel MI3209 TeraOhmLT 10kV High Voltage Insulation Tester
    (no reviews)
    £3,247.20 £2,706.00
    • Insulation resistance up to 10 TΩ
    • Adjustable test voltage between 50V & 10kV
    • Capacitance, voltage & frequency measurement & diagnostic, step voltage & withstanding voltage tests
    2706 Reward Points
    Price Match Guarantee
    MI3209
  15. Chauvin Arnoux CA6549 Digital Megohmmeter
    Chauvin Arnoux logo
    Lead Time: 1-6 Days
    Free UK Delivery
    Chauvin Arnoux CA6549 Digital Megohmmeter
    (no reviews)
    £3,334.80 £2,779.00
    • Thousands of results transferred to computer
    • Fixed and adjustable voltage tests
    • Automatic calculating of DAR, PI and DD ratios
    2779 Reward Points
    Price Match Guarantee
    P01139703
  16. Megger MIT525 5kV High Voltage Insulation Resistance Tester
    Megger logo
    In Stock
    Free UK Delivery
    Megger MIT525 5kV High Voltage Insulation Resistance Tester
    (no reviews)
    £3,662.40 £3,052.00
    • Tests resistance levels up to 10TΩ
    • Integrated memory storage and USB download to PC
    • 6 hour battery life with rechargeable batteries and optional mains power
    3052 Reward Points
    Price Match Guarantee
    1001-939
  17. Chauvin Arnoux CA6550 Digital Megohmmeter
    Chauvin Arnoux logo
    Free UK Delivery
    Chauvin Arnoux CA6550 Digital Megohmmeter
    (no reviews)
    £3,718.80 £3,099.00
    • Stores up to 80,000 results
    • Tests insulation and conducts voltage
    • DataView software included
    3099 Reward Points
    Price Match Guarantee
    P01139705
  18. Fluke 1550C Insulation Resistance Tester (5kV)
    Fluke logo
    Only 1 In Stock
    Free UK Delivery
    Fluke 1550C Insulation Resistance Tester (5kV)
    (no reviews)
    £4,092.00 £3,410.00
    • Test voltage up to 5000V
    • Voltage breakdown detection alerts 
    • Selectable test voltages in 50 V steps from 250 to 1000 V, and 100 V steps above 1000 V
    3410 Reward Points
    Price Match Guarantee
    FLUKE1550C
  19. Fluke 1550C 5kV Insulation Resistance Tester with IR3000FC Connector
    Fluke logo
    Free UK Delivery
    Fluke 1550C 5kV Insulation Resistance Tester with IR3000FC Connector
    (no reviews)
    £4,092.00 £3,410.00
    • Measure resistance up to 1TΩ
    • Maximum selectable test voltage: 5kV
    • Use the IR3000FC Connector to communicate with the Fluke Connect App
    3410 Reward Points
    Price Match Guarantee
    1550C+IR3000FC
  20. Fluke 1555 Insulation Resistance Tester (10kV)
    Fluke logo
    Only 1 In Stock
    Free UK Delivery
    Fluke 1555 Insulation Resistance Tester (10kV)
    (no reviews)
    £4,195.20 £3,496.00
    • Test resistance up to 10KV and 2TOhms
    • Selectable test voltages
    • Guard system prevents leakage of surface current
    3496 Reward Points
    Price Match Guarantee
    FLUKE1555
  21. Megger MIT1025 10kV Insulation Resistance Tester
    Megger logo
    In Stock
    Free UK Delivery
    Megger MIT1025 10kV Insulation Resistance Tester
    (no reviews)
    £4,248.00 £3,540.00
    • High specification insulation resistance tester
    • Housed in its own protective casing
    • Wide variety of testing types and in-built memory
    3540 Reward Points
    Price Match Guarantee
    1001-943
  22. Fluke 1550C/Kit Insulation Resistance Tester Kit (5kV)
    Fluke logo
    Only 1 In Stock
    Free UK Delivery
    Fluke 1550C/Kit Insulation Resistance Tester Kit (5kV)
    (no reviews)
    £4,558.80 £3,799.00
    • Test voltages up to 10 kV provides solutions for all applications
    • Voltage breakdown detection alerts 
    • Selectable test voltages in 50 V steps from 250 to 1000 V, and 100 V steps above 1000 V
    3799 Reward Points
    Price Match Guarantee
    Fluke 1550C/Kit
  23. Fluke 1550C Insulation Tester Kit w/ IR3000FC Connector
    Fluke logo
    Free UK Delivery
    Fluke 1550C Insulation Tester Kit w/ IR3000FC Connector
    (no reviews)
    £4,558.80 £3,799.00
    • Measure resistance up to 1TΩ
    • Capacitance, leakage current, and breakdown testing
    • Transfer readings to a smartphone/ tablet using the IR3000FC Connector
    3799 Reward Points
    Price Match Guarantee
    1550CKIT+IR3000FC
  24. Chauvin Arnoux CA6555 Digital Megohmmeter
    Chauvin Arnoux logo
    Free UK Delivery
    Chauvin Arnoux CA6555 Digital Megohmmeter
    (no reviews)
    £4,674.00 £3,895.00
    • DataView software included for reports
    • Stores up to 80,000 results in memory
    • Measuring range of 10 kohm to 30 Tohm
    3895 Reward Points
    Price Match Guarantee
    P01139706

Showing 1 - 24 of 38 products

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About High Voltage Insulation Testers & Megohmmeters

All electrical insulation is susceptible to degradation over time. At the start of its service life, the insulation applied to an electrical system - whether it's a common appliance such as a kettle or a high-powered device like a transformer - should be strong enough to make leakage current non-existent or negligible and ensure that the electrical installation/appliance can be used safely.

However, insulation will degrade over time leading to more potential leakage current. As such the system becomes less and less safe over time, and this is exactly why insulation resistance tests must be regularly carried out to ensure that the resistance of the insulation is sufficiently high.

We have a range of different insulation testers depending upon the application they are to be used in.