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BM5200 5kV Insulation Resistance Tester – Megger


The Megger BM5200 tester is a battery-powered instrument with digital and analog arc display, designed for high voltage insulation resistance testing in the maintenance and servicing of cables, rotating plant machinery, transformers, switchgear and industrial installations.

  • 1 TΩ, 1.4 mA, 5 kV digital insulation tester with digital and analog display
  • Insulation (InS), Polarization Index (PI) and variable timed test (t) modes
  • Selectable DC or AC (incl. frequency) voltmeter functions
  • Guard terminal to shunt surface leakage currents
  • CATIII 600 V safety rating

Automatic discharge for capacitive circuits under test is provided and decaying voltage displayed. Design safety features include high voltage warning indicator, external voltage display after IR test, & automatic discharge of reactive loads. Carrying case, test leads & alkaline batteries are included.

Electrical insulating materials deteriorate with time leading to breakdowns and costly repair bills. Insulation resistance testers apply a regulated DC voltage across the insulation and measure current flow through it applying Ohm’s law to calculate insulation resistance. The current flows because no insulation material is perfect.

IR tester uses include:

  • Product test and qualification
  • Installation of equipment
  • Routine maintenance
  • Problem resolutions

Insulation testing with high voltage DC affects insulation polarization such that consecutive testing without complete discharge of the unit under test will yield different results.

Care should be taken to always employ the same process and technique of connecting to and testing an insulator to be able to trend results. It is important to record the temperature of the insulation as well as IR values.

5kV Insulation Resistance Tester BM5200 Specs 5kV Insulation Resistance Tester BM5200

Catalog Page 155a                    Insulation Resistance Tester Datasheet

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ME/1001-289Insulation Resistance Tester
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