Megger is a premier manufacturer of portable electrical test equipment, specializing in insulation testers, low resistance ohmmeters, and cable fault locators.
Megger is a globally recognized leader in the design and manufacture of portable electrical test and measurement instruments. With a history spanning over a century, the brand became synonymous with electrical insulation testing after introducing the world's first portable insulation tester. Today, Megger serves the electrical supply industry, building maintenance professionals, and industrial facilities with rugged, high-precision equipment designed to ensure the safety and reliability of electrical assets.
The company's extensive product portfolio encompasses a wide range of diagnostic tools, including insulation resistance testers, Micro-ohmmeters (DLRO), ground earth testers, and advanced cable fault locating systems. Known for accuracy and durability in harsh environments, Megger instruments are essential for technicians and engineers maintaining critical power infrastructure. The company operates manufacturing and support facilities worldwide to provide expert service and calibration.
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Refer to your specific model's manual for fuse location. Typically, Megger instruments use high-breaking-capacity (HBC) ceramic fuses located in a battery/fuse compartment. Always replace with the exact type and rating specified to maintain safety ratings.
A 'Noise' warning indicates that electrical noise or interference in the circuit is affecting measurement accuracy. If using a DLRO2X, you can switch to Noise Rejection mode; otherwise, try to eliminate the source of noise or improve test lead connections.
Software such as PowerDB and CertSuite Asset can be found on the Megger website under the Support or Products sections. Some basic functionality may be free, while advanced reporting features often require a license.
No. Insulation resistance testing must be performed on de-energized circuits. Most Megger testers have a voltage warning indicator that inhibits testing if a live voltage (typically >30V or >50V) is detected on the terminals.