Megger BT51 Low Resistance Ohmmeter

Megger BT51 Low Resistance Ohmmeter

The Megger BT51 is a precision low-resistance ohmmeter designed for testing high-current, low-resistance connections in critical electrical systems. Ideal for utilities, manufacturing, and maintenance professionals, the BT51 ensures accurate measurement of circuit breaker contacts, busbar joints, switchgear, transformer windings, and other low-resistance components.

Featuring a test current of 2 A and measurement ranges down to 1 mΩ resolution, the BT51 delivers dependable results that help identify loose, corroded, or high-resistance connections before they lead to costly failures. Its robust design includes a clear LED display for easy readings, even in challenging industrial environments.

Powered by a rechargeable Ni-Cad battery with an internal charger, the BT51 offers excellent portability and convenience for field use. Safety is prioritized with relay protection against accidental mains voltage application, and compliance with IEC 61010-1 and IEC 61326-1 ensures reliability and peace of mind.

Whether you’re commissioning new installations or performing preventive maintenance, the Megger BT51 provides the accuracy and durability you need for dependable low-resistance testing.

Megger BT51 Key Features

• • Fast, accurate diagnostics for 12 V lead-acid batteries
  • Measures state-of-charge, cranking ability, and overall battery health
  • Clear, easy-to-read digital display for immediate results
  • Intuitive interface for simple and efficient operation
  • Compact, rugged design built for workshop and field use
  • Supports non-invasive testing without disconnecting the battery
  • Suitable for automotive, industrial, and backup power systems

What’s in the Box Megger BT51

• Megger BT51 Battery Tester
• User manual
• Test leads / clamps (included)
• Batteries (pre-installed)

Technical Highlights

• Reliable and professional testing for 12 V lead-acid batteries
• Quick, accurate readings of voltage, state-of-charge, and battery condition
• Digital display with clear numerical results
• Fast-response measurement of cranking performance
• Durable, compact housing for portable field use
• Non-invasive testing to avoid battery disconnection
• Works reliably under varying environmental conditions
• Designed for automotive, industrial, and standby power applications