MEGGER - MOM200A | MICRO-OHMMETER
 
The Megger MOM200A is a compact, high-current micro-ohmmeter engineered to check and measure contact resistances in heavy-duty electrical connections. Delivering true DC test currents up to 200 A, it is built to spot hidden oxidation, loose threads, and high-resistance joints before they lead to thermal failure. Weighing only 14 kg (31 lbs), it combines field-proven rugged portability with reliable performance, making it an excellent choice for utility substations, industrial switchyards, and manufacturing plants.
 
Features & Benefits
 
True high-current output capability up to 200 A DC for rigorous low-resistance testing
Capable of sustaining 100 A continuous output for extended testing without overheating
Direct analog or digital resistance readout simplifies immediate data interpretation in the field
The four-terminal Kelvin sensing method eliminates test lead and contact resistance errors
Built-in induction protection guards and decouples current output and sensing inputs against external overvoltages.
Highly flexible, heavy-duty connection cables facilitate easy hookups in cramped or difficult-to-reach locations.
Rugged, lightweight portable housing designed specifically for harsh field and utility environments.
 
Use cases / Application
 
Measuring contact resistance in high-voltage circuit breakers and disconnecting switches (isolators).
Checking integrity and resistance levels across heavy busbar joints and high-current cable links.
Inspecting knife-contact fuses, safety devices, and industrial grounding connections.
Preventive maintenance routines to detect abnormal heating risks caused by loose or oxidized joints.
Quality assurance checks for industrial manufacturing plants producing heavy electrical equipment.