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Megger MOM3 Microohmmeter (Choice of Kits)

Megger
SKU: MEGGMOM3
  • Delivers test currents up to 300A DC
  • Auto range from 0.1µΩ to 3000mΩ
  • Complies with IEEE and IEC standards
More Info
Typically ships in 7-10 working days

The Megger MOM3 Microohmmeter (Choice of Kits)

The Megger MOM3 Microohmmeter is a lightweight, battery-powered handheld instrument that can deliver up to 300A DC test current for resistance measurements up to 3Ω, with high resolution and accuracy.

At its core are ultracapacitors, which provide instant high-current output to perform successive resistance tests without drawing directly from the battery. Featuring auto-ranging from 0.1 µΩ to 3000 mΩ, a high-resolution, backlit display, and an intuitive interface, the Megger MOM3 ensures simple navigation and reliable test execution in challenging conditions. It features an internal memory that stores over 2000 test results with efficient data export via USB-C. The Megger MOM3 is built to withstand the rigours of industrial environments, meeting both IEEE and IEC standards for shock, vibration, and transport. It is able to operate in temperatures ranging from -20°C to +50°C as well as altitudes of up to 3000 metres. Features such as durable rubber housing, an IP54 rating, audible feedback, and robust connectors add to its usability and dependability in the field.

Applications

The Megger MOM3 is designed to measure low resistance in electrical systems where poor connections may cause power loss, overheating, or equipment failure. The most common tests the Megger MOM3 performs include contact resistance measurements and connection checks on low-, medium-, and high-voltage circuit breakers, busbar joints, disconnecting devices, switches, fuses, cables, welding points, and grounding systems. Regularly monitoring electrical installations with the Megger MOM3 can help prevent faults while also ensuring safety and efficiency. For example, a contact resistance of just 1 mΩ at 10 kA can lead to a 100 kW power loss, posing serious risks and possibly premature failure if left unchecked.

Here's a table that demonstrates the importance of low resistance joins within high current applications:

Current Contact resistance Power loss
10 kA 1 mΩ 100 kW
10 kA 0.1 mΩ 10 kW
1 kA 1 mΩ 1 kW
1 kA 0.1 mΩ 100 W

Choice of Megger MOM3 Kits:

  • Megger MOM3 Microohmmeter with Kelvin Probes (BK-30191)
  • Megger MOM3 Microohmmeter with 3m Kelvin Clamps (BK-30291)
  • Megger MOM3 Microohmeter with 5m Kelvin clamps 5 m cable set (BK-30381)

Key Features

    • Delivers test currents up to 300A DC
    • Powered by internal ultracapacitor
    • Auto range from 0.1µΩ to 3000mΩ
    • High-contrast backlit display
    • Internal data storage for up to 2000 test results
    • Complies with IEEE and IEC standards
    • Battery powered
    • IP54 rated

What's In The Box?

  • Megger MOM3 Microohmmeter
  • Ground cable
  • Battery charger
  • USB-C to USB-C cable
  • Carrying strap
  • Soft carrying case
Specification

Specifications

  • Test Current: Selectable from 5A to 300A
  • Resistance Range: 0.1µΩ to 3000mΩ (Auto-ranging)
  • Resolution: 0.1µΩ (minimum), varies by range
  • Accuracy: ±0.1% of reading ±0.05% of range
  • Output Voltage: Max 5VDC
  • Output Range: Max 300A DC (resistance ≤2mΩ)

Power & Battery

  • Battery Type: Li-Ion, 19.8Wh
  • Battery Life: Up to 2000 measurements at 50A, 1500 at 100A, 500 at 300A
  • Recharge Time: Approximately 3 hours at 25°C
  • Charging Input: 100–240V AC, 50/60Hz, 1.3A
  • Charging Output: 5.0V, 3.0A (15W)

Physical & Environmental

  • Dimensions (Instrument only): 230 x 108 x 98.5mm
  • Weight: 1.15 kg (instrument only), 4.3kg (with case & accessories)
  • IP Rating: IP54
  • Operating Temperature: -20°C to +50°C
  • Storage Temperature: -40°C to +70°C
  • Altitude: Up to 3000m operational
  • Relative Humidity: 5% to 95%, non-condensing

Connectivity & Data

  • Data Storage: >2000 measurements
  • Logger Info: Timestamp, Current, Resistance (with labelling options)

Compliance & Safety

  • Certifications: CE Marking (RED 2014/53/EU)
  • Standards: IEC 60068-2-27 (Shock), IEC 60068-2-6 (Vibration), ISTA 2A (Transport)
  • Flammability Class: V0