Megger

Megger

Megger is a UK-based manufacturer of electrical test and measurement instruments, widely recognized for its expertise in insulation resistance testing, earth and ground resistance measurement, and cable fault location. Founded in the late 19th century, Megger pioneered the megohmmeter — from which the brand derives its name — and has since expanded into a comprehensive portfolio covering all aspects of electrical safety and asset management testing.

Megger instruments are used by electrical engineers and maintenance professionals to verify the integrity of insulation in motors, transformers, cables, and switchgear. The company's earth resistance testers and clamp-on ground testers are essential tools for verifying grounding systems and lightning protection installations, including wind turbine applications. Their time-domain reflectometers (TDR) enable rapid fault location in underground and aerial cable networks.

Key Product Lines

• Insulation resistance testers (megohmmeters) for cables, motors, and transformers
• Earth and ground resistance testers for grounding system verification
• Cable fault locators and time-domain reflectometers (TDR) for underground cable diagnostics
• Low resistance ohmmeters (milliohmmeters and microohmmeters) for contact and bond resistance measurement
• Electrical safety analyzers and portable appliance testers (PAT)

Industries Served

Megger equipment is widely used in electrical utilities, power generation, industrial manufacturing, construction, telecommunications, railways, and renewable energy. Field service engineers rely on Megger instruments for preventive maintenance of high-voltage systems, commissioning of new electrical installations, and fault diagnosis in both low- and medium-voltage networks.