Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: dav08a
  • Content: Threads
  • Order by date
  1. dav08a

    are there any transformer need 3 REF protection?

    Dear all, The Areva P643 has 3 REF protection function. However, in the real world, would there be any transformer need 3 REF protection? i normally see Yy0d11 transformer (which will need 2 REF protection function), but i never see Yyy transformer. therefore, is it safe to say only 2 REF...
  2. dav08a

    Basic 3 phase power balance theory

    Dear all, i have been in Power industry for quite a few years, yet i still dont understand this simple basic theory. hope the expert here could enlighten me. The power system is 3 phase 120deg balance. however, when it come to consumer side, it will be step down to 415Vac and distribute single...
  3. dav08a

    excel or software to assist transformer bias differential testing?

    dear all, i am currently work on commissioning testing of transformer bias differential CRP. the client want to test a lot of test points, and scenarios, eg. heavy external fault. anyone here have excel sheet or software (or recommend me software) could help me determine the value of secondary...

Part and Inventory Search

Back
Top Bottom