Skip to product information
1 of 6



Contact us for more information on this product

View full details


Contact resistance measurement is one of the most important and common tests during switchgear manufacturing, commissioning and maintenance stages. Besides switchgear testing, DV Power's RMO digital micro-ohmmeters are designed for simple, safe and efficient testing of:

  • disconnecting switches
  • high-current bus bar joints
  • cable splices
  • welding joints
  • and different high-current links in factory and high-induction field environments

All DV Power RMO micro-ohmmeters use Kelvin’s 4-point measurement principle which is the most convenient for very small resistance measurements. The measurements are accurate and in accordance with international standards for AC high-voltage circuit breakers testing (IEEE C37.09 and IEC 62271-100).

Starting from 2003, DV Power has been a trendsetter on the market when our first 500 A micro-ohmmeter weighing only 8 kg (RMO500A /CPM500) was released.

Currently, DV Power micro-ohmmeters portfolio includes 19 models, divided into 4 series:

  • 13 portable models: RMO-A (6), RMO-G (7) series, and RMO-C (3) series
  • 6 handheld models: RMO-H (6) series

The instruments generate a user-selectable and ripple-free test current up to 800 A in an automatically regulated test ramp. Test current ramping significantly decreases the influence of the magnetic transients to measurement.

Download Items: 

RMO-C Series Data Sheet

RMO-G Series Data Sheet

RMO-A Series Data Sheet

RMO-H Series Data Sheet