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MJ15 5kV Insulation Tester

The Megger MJ15 is a compact 5kV insulation tester with simple operation & provides a quick, accurate readings of insulation resistance. Hand cranked or battery powered.

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Megger MJ15 5kV Compact Insulation Tester

The Megger BM15 is a general purpose 5kV Insulation Tester for electrical contractors and engineers who test machinery, transformers, switchgear, cables etc.

Simple to use, providing quick, accurate readings of insulation resistance; the Megger MJ15 has an analogue display with a maximum reading of 20 GΩ.

A voltage range enables measurement of AC or DC conductor potential with four test voltages available at 500 V, 1 kV, 2,5 kV and 5 kV.   A choice of push buttons are supplied; a locking button simplifies long term testing, or a nonlocking version is preferred for maximum safety.   A bezel allows a scale plate overlay to be added with pass/fail bands for go/no go testing - this is particularly useful for less experienced users and enables a rapid decision to be made.

Megger MJ15 Key Features:

  • Four test voltages to 5 kV
  • Dual power supply option giving the best of both worlds
  • Resilient mounted analogue scale for robustness
  • Voltage range to 600 V indicates auto discharge
  • Pass/fail overlays for rapid testing
  • Single scale for insulation values to avoid operator error


Megger MJ15 Application:

Insulation is important for the safety of all electrical systems, providing a barrier to hazardous live conductors. Insulation can deteriorate due to the affects of moisture, sunlight and heat.  A reduction in the value of insulation resistance can lead to a potentially dangerous situation caused by the dangers of electric shock, or arcing causing fire.  If insulation resistance is regularly monitored unusually low values can be investigated before they cause danger, or inconvenience and cost due to equipment downtime for repairs.

MJ15 has been designed for the following industries:

  • Electrical Contractors
  • Maintenance Engineers
  • Telecommunications Engineers
  • Gas and Water Utilities
  • Railway Companies
  • Cable Manufacturers
  • Mining Companies



Technical Specification for: Megger MJ15 5kV Insulation Tester

Resistance Range20GΩ
Capacitance Range5 µF
Test Voltage500V, 1000V, 2500V, 5000V
Safety RatingCATIII 300 V
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Accessory Code Description Price (Ex VAT)
1001-895 Lead Set Si Red/Black/Black 9.5 Plug £75.00 ADD
6111-217 Pack of 20 test record cards (5 kV) £16.00 ADD
6220-434 Lead Set ATR Series £58.00 ADD
6420-117 Carry Case with Lead Storage £50.00 ADD
6420-123 Pouch BMM Series Test+Carry £49.00 ADD
1008-022 Lead Set 3kV 3x3m Medium Clips £118.00 ADD