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- CT saturation test
  
  NETA Level 2 Exam (1 replies)
  
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- XFMR test question - wye-delta TTR
  
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  A wye-delta transformer has a primary line voltage of 7200 V and a secondary line voltage of 480 V. What is the turns ratio? Your Answer: 15:1 Not sure...
  
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- Limited - Prohibited - Restricted Boundaries
  
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  I have been told there are only two Boundaries now. If this is true, what has been eliminated and what are the new values?
  
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- Limited Approach Boundary for 35kV switchgear
  
  NETA Level 3 Exam (4 replies)
  
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- CT with turns calculation
  
  NETA Level 2 Exam (1 replies)
  
  Shown below is a current transformer with the number of turns between taps. In the space provided, write the calculated voltage for taps X1 to X3 when 200 V is...
  
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  A comprehensive guide to surge arrester selection, application, maintenance and testing. Continue Reading
  
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- Ground Fault Protection Systems: Performance Testing Basics
  
  This guide provides a general overview of inspection and test procedures for simple residual and zero-sequence ground fault protection systems. Continue Reading
  
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- Power Cable Testing and Diagnostics Overview
  
  This article provides an overview of some commonly used maintenance and diagnostic techniques that are commercially available for performing tests in the field on medium- and high-voltage power... Continue Reading
  
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- Zone Selective Interlocking (ZSI) Basic Principles
  
  This guide provides a basic overview of zone selective interlocking principles and test procedures. Continue Reading
  
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- 5,000A Magnum SB Ground Fault verification
  
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Just passed Neta ll. Used Test Guy for 50% of prep. There were only a few test guy questions on there, but it helped me find my weak points. I definitely...

What's the cause of a "magnetized" transformer and what's the correct procedure for de-magnetizing? I've been told you should de-magnetize each phase after...

During a saturation test of a 1500/5 multi-ratio CT, 400 volts is applied to the X1 to X4 tap. The X1 to X4 tap is the 1200/5 ratio. What is the expected...

A wye-delta transformer has a primary line voltage of 7200 V and a secondary line voltage of 480 V. What is the turns ratio? Your Answer: 15:1 Not sure...

I have been told there are only two Boundaries now. If this is true, what has been eliminated and what are the new values?

10. What is the Limited Approach Boundary for a 35kV switchgear? Your Answer: 10 feet Help: NFPA 70E Table 130.4(D)(a) NFPA 70E Arc Flash and Shock Hazard...

Shown below is a current transformer with the number of turns between taps. In the space provided, write the calculated voltage for taps X1 to X3 when 200 V is...

Would anyone like to participate in a online study group? I have tried passing this exam three times now and each time I am a little closer but still not...

I took the NETA IV exam this Monday. There was maybe one or two questions from this entire site on the exam!!!

Just took the exam, which only had a handful of questions from the practice exams (I still believe I passed), but there was no score at the end and the paper...

Does anyone have experience doing a Ground Fault verification through a neutral CT on a 5,000A Magnum SB main Breaker with a Digitrip 520 trip unit?

As part of our ongoing effort to make this community the best it can possibly be for our members, we are pleased to announce our first ever posting competition...

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