• approved distributor

    Buy or Hire Test Equipment
    Repair | Calibrate | Training

  • product advice and demos

    Product advice & demos
    Aftersales support

  • competetive prices

    Competitive quotes
    Bespoke deals

  • approved distributor

    Approved distributor
    Approved service centre


Be the first to review this product

MIT525 5kV Diagnostic Insulation Resistance Tester

Megger MIT525 5kV Diagnostic Insulation Resistance Tester with extra features of: USB interface, on-board-memory, temperature value stored & time/date stamped results.

Part Number:

read more


Need Help ? Contact Us Request Demo Browse Accessories
Acutest's Price Promise
  • Competitive quote
  • Expert technical advice/demos
  • Trusted aftercare support


Manufacturer's RRP

3888.00 incl. VAT)
Add To Cart
  • Competitive quote
  • Expert technical advice/demos
  • Trusted aftercare support




Megger MIT525 Diagnostic Testing / Maintenance of HV Electrical Equipment

The Megger MIT525 is a 5kV output instrument with full diagnostic capabilities, featuring an easy-to-remove lid printed with a ‘quick start guide‘ to help you get started.

As well as measuring insulation resistance to 10 tera-ohm (TΩ), the MIT525 also offers various diagnostic tests such as polarisation index, dielectric absorption ratio, step voltage, dielectric discharge and ramp testing.

Equipped with a large LCD to display all your diagnostic measurements: resistance, voltage, leakage current, capacitance, battery status and time constant.  In addition, the elapsed time of the test is displayed constantly, removing the need for a separate timer.

Toughness you can rely on in the field - The MIT525 boasts a unique dual-case construction comprising a tough outer case and fire retardant inner case, for that extra reassurance!

▶ Video: Overview of the Megger MIT515 Insulation Resistance Tester

Video thumbnail for the Megger MIT515

Megger MIT Key Features:

  • Measures up to 10 TΩ
  • Selectable test voltage from 250 to 5000 V
  • Measures capacitance of test object (with test voltages over 5000 V)
  • IR, Timed IR, DAR, PI, DD, SV and Ramp diagnostic tests
  • High current – 3 mA short circuit current
  • High noise immunity – 3 mA (5 kV and 10 kV) 6 mA (15 kV) of noise rejection
  • Dedicated voltmeter function (30 V to 660 V)
  • Improved productivity – operate from line power/mains if battery dead
  • Large LCD display with back-light
  • Lithium-ion battery - extended capacity, rapid charge (fully charged in 2.5 hours)
  • Can also operate on mains power too
  • CAT IV 600 V safety rating

▶ Video: High Performance Guard Terminals

Video thumbnail for Megger High Performance Guard Terminals

Megger MIT525 Extra Features

What extra features does the MIT525 offer compared to the MIT515?

  • Advanced memory, on screen recall and real time clock for date / time stamped results
  • Download of on-board results via USB interface
  • Recorded temperature (measured by independent instruments) can be saved with test result
  • PowerDB Lite asset management software

What comes with the Megger MIT525?

  • Megger MIT525 5kV Insulation Resistance Tester
  • (1008-022) 3m Lead Set with Medium Clips
  • Power Lead
  • User Guide on CD-ROM
  • USB Cable
  • PowerDB Lite Software


Comparison Chart for: Megger MIT525 5kV Diagnostic Insulation Resistance Tester

Max. output voltage5 kV5 kV10 kV15 kV
Max. resistance10 TΩ10 TΩ20 TΩ30 TΩ
Accuracy from 1 MΩ to±5% ≤ 1 TΩ ±20% to 10 TΩ±5% ≤ 1 TΩ ±20% to 10 TΩ±5% ≤ 2 TΩ ±20% to 20 TΩ±5% ≤ 3 TΩ ±20% to 35 TΩ
Short circuit output current3 mA3 mA3 mA3 mA
Max. noise rejection3 mA3 mA3 mA6 mA
Four averaging filters
Safety rating (to max. altitude)CAT IV 600 VCAT IV 600 VCAT IV 600 VCAT IV 1000 V
Max. altitude3000 m3000 m3000 m3000 m
Battery charge2.5 hrs2.5 hrs2.5 hrs2.5 hrs
Battery life single charge6 hrs6 hrs4.5 hrs4.5 hrs
Remote control via USB***
USB interface
Bluetooth memory download and live stream
On-board memory
Temperature value stored
Humidity value stored***
Time / date stamped results
Compact / lightweight4.5 kg4.5 kg4.5 kg6.5 kg
Easy rotary switch operation
Digital / analogue display
Display backlight
Voltage output measurement
Dedicated voltmeter
Default voltmeter function
* Features available on S1 range only .


Accessory Code Description Price (Ex VAT)
1002-534 Leadset 3kV large clips (3 x 3 m) FOR 515/525/1025 £123.00 ADD
1002-641 5m leadset x 3 medium insulated clips £138.00 ADD
1002-642 8m Test Lead Set x 3; medium sized 6kV insulated clips £185.00 ADD
1002-643 10m Leadset medium size insulated clips £205.00 ADD
1002-644 15m Leadset medium size insulated clips £280.00 ADD
1002-645 5m leadset x 3 large insulated clips £158.00 ADD
1002-646 8m leadset x 3 large insulated clips £205.00 ADD
1002-648 15m Leadset large size insulated clips £300.00 ADD
1002-913 Bare clip Fused 1kV HV Leadset £110.00 ADD
6220-822 Leadset 1 kV Red/Black for 5&10KV ( 2 x 3m) £99.00 ADD
6311-077 CB101 5 kV Calibration Box £385.00 ADD
6311-080 15m (50ft) Leadset 5kV Screened Compact Clips £350.00 ADD
1008-022 Lead Set 3kV 3x3m Medium Clips £118.00 ADD