Test Your Knowledge – Part 2
For the next few weeks we will post a motor reliability question for you to test your knowledge. Scroll to the end to see the correct answer. Over a series…
Tip of the Week
Test Your Knowledge – Part 1
For the next few weeks we will post a motor reliability question for you to test your knowledge. Scroll to the end to see the correct answer. Per IEEE Standard…
No Current Imbalance Doesn’t Mean No Problem
Just because the three phase current data being returned by the installed relay is balanced, doesn’t clear the power circuit of possible anomalies. Remember from previous tips that the opposition…
Out With The Old In With The New!
PdMA Corporation is proud to announce the release of their new updated website. PdMA has always maintained a strong commitment to bringing you the latest technical information through Case Studies, White…
EASA AR-100 Changes That Affect You – Part 2
Part 2 (Resistance Unbalance Tolerances) Another very good change to the AR-100 is the addition of resistance unbalance limits for random and form wound coils. For over thirty years PdMA…
EASA AR-100 Changes That Affect You – Part 1
Part 1 (Minimum Insulation Resistance) A very good and practical change to the AR-100 is the minimum insulation resistance for DC armatures being lowered to 5Mohms. Yes, 5 Mohms! In…
Submit Your Tips
Submit an Electric Motor Testing Tip of your own and receive a free PdMA mug or hat if we publish it! Contact Lou.