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When testing breaker contacts, if the mV drop test gives acceptable results, is using a DLRO still required?

Issue:
In the document 0600IB1201, there is a statement saying that Square D recommends using a DLRO. Is that a requirement, even if the mV drop test gives acceptable results?

Product Line:
All circuit breakers

Resolution:
When testing breaker contacts, if the millivolt drop test gives acceptable results, no additional testing would be required. However if the millivolt drop test results are higher than acceptable, then the breaker contacts need to be conditioned. A method suggested in 0600IB1201 to condition the contacts is to perform instantaneous primary injection testing to clear the contacts of resistive films and oxidation. Once that is done, run the milivolt drop test again. Acceptable results indicate no further testing would be required.

In that document, we do state Square D recommends using a DLRO. From our experience, the DLRO gives good results. But we are NOT trying to state the DLRO is the only method. If a mV drop test gives acceptable results, further testing with a DLRO is not required.
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