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Megger MJOLNER 200 Micro-Ohmmeter - Choice of Cable Set

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The Megger MJOLNER200 is a high accuracy low resistance ohmmeter, made for testing the resistance levels of circuit breaker contacts, bus-bar joints, contact elements in bus-bars and other high current links.

Built inside its own suitcase for easy transportation, the MJOLNER200 is powered by a built-in microprocessor system to ensure fast response, easy access to all of the procedures you need and even gives you the ability to carry out fully automatic testing.

Megger's MJOLNER200 is designed for low current applications up to 200A DC; this is best suited when testing high current devices such as circuit breakers, ensuring your test results are as accurate as possible.

For added safety, the MJOLNER200 is equipped with Megger's DualGround. This grounds both sides of the unit, ensuring a safe, fast and easy workflow and giving you the peace of mind to know you're working safely even in demanding conditions.

The MJOLNER200 is equipped with an interface for connection to PC and even has a built-in printer as standard for on-the-go reporting.

Megger MJOLNER200 Micro-Ohmmeter Key Features

  • Fully automatic testing - controlled by a powerful microprocessor
  • Dual-Ground - grounded on both sides for added safety
  • Current up to 200A DC; best suited for low current applications
  • True DC ripple-free current
  • Built inside its own lightweight suitcase designed to resist impact, water, dust and sand
  • Built-in thermal printer
  • PC interface connection

What's Included?

  BB-19193 BB-19100
Megger MJOLNER 200 Micro-Ohmmeter

Ground Cable

5m, 35mm² Current Cables ✔x2
5m, 35mm² Sensing Cables ✔x2
XA-12992 DualGround Kit

Megger MJOLNER200 Technical Specifications

Specifications are valid at nominal input voltage. Specifications are subject to change without notice
Application Field The instrument is intended for use in high voltage substations and industrial environments
Operating Temperature -20 to +50°C (-4 to +122°F)
Storage and Transport Temperature -40 to +70°C (-40 to +158°F)
Humidity 5 to 95% RH, non-condensing
LVD 2014/35/EU
EMC 2014/65/EU
General Specifications
Mains Voltage 100 to 120, 200 to 240V AC, 50/60Hz
Input Current (Max) 13A at 100V, 6A to 230V (3 seconds)
Protection Fuses (200mAT and 400mAT)
Thermal Fuse
Shut Off Temperature: 70°C (158°F)
Internal Temperature
Dimensions 486 x 392 x 192mm (19 x 15 x 7.5 inches)
Weight 13.8kg (30.4lbs)
Display LCD and LED
Available Languages English, Dutch, French, Spanish and Swedish
Printer Thermal printer (takes thermal paper rolls with width of 57.5mm and diameter of 30mm)
Current Cables 2 x 3m (9.8ft), 35mm²
Sensing Cables 2 x 3m (9.8ft), 2.5mm²
Measurement Section
Range 0 to 999.9mΩ
Resolution 0.01μΩ - below 100μΩ
0.1μΩ - below 1.0mΩ
1μΩ - below 10mΩ
10μΩ - below 100mΩ
100μΩ - below 1000mΩ
Current Shunt 200A, 60mV
Sense Ranges 0 to 2mV, 0 to 20mV, 0 to 200mV, 0-5V
Inaccuracy Typical Maximum
100A, ta 25°C, R < 1mΩ ±0.2μΩ ±1μΩ
50-200A, ta 10-40°C, R < 1mΩ ±0.3μΩ ±2μΩ
50-200A, ta 0 to 50°C, R < 1mΩ ±0.7μΩ ±3μΩ
50 to 200A, ta -20 to +50°C, R < 1mΩ ±1.1μΩ ±4μΩ
100A, ta 10 to 40°C, 1mΩ < R < 8.4mΩ ±6μΩ ±25μΩ
50A, ta 10 to 40°C, 10mΩ < R < 100mΩ ±80μΩ ±500μΩ
5A, ta 10 to 40°C, 100mΩ < R < 1000mΩ ±1mΩ ±10mΩ
Range 5 to 200A DC (steps of 1A)
Max Output Voltage 5.25V at 600A
Max Ripple 80mVpp, 28.3mVrms at 0 to 50°C (+32 to +122°F)
Max Load Capacity 200A (continuous)
Output 100μV/A
Shunt Output From internal shunt 60mV at 200A
Inaccuracy ±1%
Sense Max 20V between terminals and to protective earth (ground)
Input Max 20V between terminals and to protective earth (ground)
DC Current Clamp Input Sensitivity Adjustable from 0.1 to 20mV/A
DC Current Clamp Input Impedance >1MΩ
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