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Micro-Ohmmeters

Home > CB Testing > Micro-Ohmmeters

Micro-Ohmmeters

Posted on June 13, 2022November 17, 2022 by Nasir Anwar
0

Contact resistance measurement is one of the most important and common tests during switchgear manufacturing, commissioning and maintenance stages. Besides switchgear testing, the 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 trend-setter on the market when our first 500 A micro-ohmmeter weighing only 8 kg (RMO500A / CPM500) was released.

Currently, DV Power products portfolio includes 16 models, divided into 3 series:

  • 13 portable models: RMO-A (6) and RMO-G (7) 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.

For more information about Micro-Ohmmeters get in touch with us here.

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