Timeline
  • Megger DLRO10HD vs 1000KVA XFMR

    I have noticed that the two DLRO10HD's i have had both have issues with the batteries and the 10 amp setting goes out and eventually the rest of the settings go out and you have to replace the battery to fix it...then the cycle repeats. I have done windings a couple times and once this issue begins with mine it just wont read windings well.

    Posted by Douglas_Neal on 05-19-2024
  • Megger DLRO10HD vs 1000KVA XFMR

    Did you adjust the scale down? Use the coil setting. It works better when you use leads with clamps, this way you can't slip.

    Posted by ElectricalTestTech on 05-19-2024
  • Important Safety Standards for the Electrical Construction Industry

    This is awesome! Thank you for posting! Each member of our team has been asked to put together a short safety presentation for an upcoming safety day revolving around MV Safety Awareness. Would anyone here already have a presentation/ slides/ power point etc. I could use to help me in building my own presentation? Ty

    Posted by cptviggi on 05-17-2024
  • Wye Wye configuration and Ferro Resonance?

    The customer hired a 3rd party engineering firm and yes, they said they are the wrong types of transformers for the application, though I never heard why. The original protection schemes were apparently never commissioned properly and didn't provide the protection intended or advertised. My employer has been hired to replace both transformers, associa...

    Posted by cptviggi on 05-17-2024
  • ABB SACE Tmax XT5H

    So I did some research last weekend and ended up having to take the trip unit off of the breaker to meg it phase to phase. The front cover has to come off and there are 3 torx screws that have to be loosened, and then there are 4 more allens on the bottom of the breaker, by the lugs, that have to come out, that hold the trip unit to the breaker. Once you get...

    Posted by Jonmad99 on 05-14-2024
  • Megger DLRO10HD vs 1000KVA XFMR

    Has anyone tried to find winding resistance with a Megger DLRO10HD on a 1000KVA XFMR with any success. We tried today and it was almost as if the ductor cut off because it just didn't have the capacity, but an AEMC will do it. Any info greatly appreciated.

    Posted by Jonmad99 on 05-14-2024
  • Passed My NETA LEVEL 2 exam, some pointers for anyone studying

    [quote="Sparky7064, post:1, topic:2340"] week i was getting 70s and 80s. so dont be discouraged if you get a low [/quote] I passed my NETA 2 in December of 2023. I took 20 practice exams from Testguy and studied my NETA MTS and ATS book. I'm studying for my NETA 3 now. Good luck everyone.

    Posted by user209 on 05-14-2024
  • High Excitation and No LV Winding Resistance Problems

    Hi, i would agree with RVAsparky on the test currents. Do you have a photo of the name plate? And have you had any luck with the higher currents?

    Posted by user536 on 05-13-2024
  • Tettex 2293 External Software communication

    For remote test control? section 22 page 182 For test data export? section 6.8 page 50

    Posted by RVAsparky on 05-09-2024
  • High Excitation and No LV Winding Resistance Problems

    LV dry types are a pain. I think your test current is really low. It may be "small" but with a 208 secondary the current is much larger than comparable mv unit. 500kva 208 is almost 1400 amps. snip below is from the TRAX manual.

    Posted by RVAsparky on 05-09-2024
  • Tettex 2293 External Software communication

    Hi everyone, Anyone knows how to communicate with a tettex 2293 winding tester with one external software? Thanks in advanced for your help.

    Posted by rodolfomatos on 05-08-2024
  • High Excitation and No LV Winding Resistance Problems

    Both units are throwing the same symptoms. Unit 1: In service until unneeded before sitting in storage for 20 years, no secondary connections, and wouldn't an open/short throw off the TTR (Tested at 125V after discovering the LV fault needed) results? WR was tested at 1A first since its a small XFMR and then 8A with no change. Unit 2: Built in 2019, never ...

    Posted by CTT1 on 05-08-2024
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