Megger MOM3 Handheld micro-ohmmeter 300 A

The MOM3 uses two ultracapacitors to generate the current output. Thanks to the low internal resistance, ultracapacitors are capable of instantaneous delivery of very high currents, in MOM3 up to 300 A up to 2 mΩ. With ample energy stored in the ultracapacitors, it is possible to make multiple tests in very rapid sequence. The current output of MOM3 is also regulated and kept at the set value for the duration of the test time. With an ultra-short measurement time, the MOM3 does not heat up the measurement object and thus eliminates the need for bidirectional measurements otherwise commonly used in micro-ohm measurements.

APPLICATIONS

The MOM3 test system is designed to serve several applications. The most common tests are contact resistance measurements and connection checks for low, medium, and high voltage circuit breakers, as well as for busbar joints and connections. MOM3 is also ideal for all applications in which a low resistance need to be verified, e.g. in switches, disconnecting devices, safety ground connections, welding points, fuses and cables. If the measured resistance is abnormally high this will lead to power loss and temperature rise, which often leads to serious trouble. To avoid such problems, it is necessary to check the resistance at regular intervals