The MJÖLNER600 is a 600 A micro-ohmmeter with DualGround safety features. It has been designed to measure the resistance of circuit breaker contacts, bus-bar joints, contact elements in busbars, and other high-current links with safety, ease of use, and versatility in mind. Indeed, it's high current capability goes up to 600 A DC (a true DC ripple-free current), so you avoid will problems with incorrect test results due to low test current when testing high current devices such as circuit breakers. As such, this micro-ohmmeter can be used anywhere to measure a low resistance value with high accuracy.


The MJÖLNER600 also has the ability to make measurements according to the DualGround™ method. This means that the test object will be grounded on both sides throughout the test, giving you a safer, faster, and easier testing process. Additionally, its lightweight yet rugged case design makes the MJÖLNER600 an excellent choice when you need a portable solution in the field. When the case is closed, the product can withstand the impact of water, dust, or sand – it even floats!

Measurement 

Range: 0.1µΩ to 999.9mΩ 

Resolution: 

0.01 μΩ below 100 μΩ

0.1 μΩ below 1.0 mΩ

1 μΩ below 10 mΩ

10 μΩ below 100 mΩ

100 μΩ below 1000 mΩ

Current shunt: 600A, 60mV

Sense ranges: 0-2mV, 0-20mV, 0-200mV, 0-5V


Outputs

Range: 5A to 600A with steps of 1A

Max output voltage: 5.25V at 600A

Max continuous load capacity: 300A


Inputs

Sense: Max 20V between terminals and to protective earth (gorund)

Input DC current clamp: Max 20V between terminals and to protective earth (gorund)

Input sensitivity: Adjustable 0.1 – 20 mV/A

Input impedance: >1 MΩ





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