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  Electrical Testing Talk 0
  
  Just took my level 3 test today and did not pass with a 387. My test had a lot of commission questions and a lot of algebra. I wish the best to anyone else...
  
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- How to Reset SEL 351 Relays on Factory Defaults
  
  P&C / Relay Testing Talk 2
  
  hello all, I need help to reset my sel351s relays on factory defaults Level 2 =>>R_S Not allowed thank you
  
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- Injection Testing - DC Breakers
  
  Electrical Testing Talk 0
  
  We may be testing some DC breakers soon, and typically use a Multi-Amp CB 225 tester for standard AC testing. Any guidelines on using an AC test set for DC...
  
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- Switching under full load.
  
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  Commissioning agents want to switch ups system under full load and they want us to do it. What would you guys do?
  
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- If a breaker is timing at 10 cycles slower than nameplate
  
  NETA Level 3 Exam 1
  
  If a breaker is timing at 10 cycles slower than nameplate and 2nd time it is 4 cycles slower, what is the best course of action next? Your Answer: Breaker...
  
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- I took the test last week
  
  NETA Level 3 Exam 1
  
  I would say about 25% of the questions on the exam were on this forum.
  
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- Omicron Test Equipment vs Others
  
  Electrical Testing Talk 3
  
  I've recently went and visited an Omicron facility in Houston. We went for the line impedance testing abilities, but while we were there I was able to ask...
  
  Last post by wholland 4 Days Ago
More topics: Electrical Testing Talk | Relay Testing Talk | Safety & Arc-Flash | NETA Exam Prep | NICET Certification Talk
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Technical Articles
- Power Quality Analysis: Basic Theory and Applications Explained
  
  There is no such thing as perfect power quality in the real world. Service interruptions, equipment malfunction, and excess power consumption are all common symptoms of poor power quality. Continue Reading
  
  Posted By testguy November 23, 2019
- Magnetron Atmospheric Condition (MAC) Testing Principles
  
  Unlike the hipot test, testing vacuum interrupters utilizing magnetron atmospheric condition (MAC) principles can provide a viable means for determining the condition of vacuum interrupters prior to... Continue Reading
  
  Posted By testguy September 15, 2019
- Electrical Power System Studies Explained
  
  There are many different types of power system study, each with their own special purpose and calculation method. Each analysis is unique to a particular power system, any changes within the system... Continue Reading
  
  Posted By testguy August 9, 2019
- Power Distribution Unit (PDU) Applications, Testing & Maintenance
  
  Traditional data center power distribution designs consist of multiple PDUs delivering power to remote power panels (RPPs) throughout the building, which in turn deliver power to network hardware... Continue Reading
  
  Posted By testguy May 26, 2019
- Network Protector Basics: Applications, Operation, and Testing
  
  This guide covers network protector basic operation and maintenance procedures. Continue Reading
  
  Posted By testguy April 19, 2019
- Infrared Thermography for Electrical Distribution Systems
  
  This guide provides a basic overview of the theory and procedures involved with infrared scanning electrical distribution systems. Continue Reading
  
  Posted By testguy December 22, 2018
- Protective Relay Testing and Maintenance Overview
  
  A comprehensive overview of inspection and test procedures for protective relays in electrical power systems. Continue Reading
  
  Posted By testguy November 22, 2018
- Surge Arresters: Selection, Application and Testing Overview
  
  A comprehensive guide to surge arrester selection, application, maintenance and testing. Continue Reading
  
  Posted By testguy November 9, 2018
- 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
  
  Posted By testguy June 6, 2018
- 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
  
  Posted By testguy May 2, 2018
- Zone Selective Interlocking (ZSI) Basic Principles
  
  This guide provides a basic overview of zone selective interlocking principles and test procedures. Continue Reading
  
  Posted By testguy April 5, 2018
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- What’s the best way to operate power dB
  
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- NETA III Test April 2019
  
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- Building fundamental knowledge of Relay Protection
  
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- Transformer power factor under vacuum
  
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- How do you Defeat Ground Fault with Primary Injection on Eaton 310+? Trip Unit
  
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- Circuit Breaker Simulator
  
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- Community Posting Competition Fall 2019 - Enter to win cool prizes!
  
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More topics: Electrical Testing Talk | Relay Testing Talk | Safety & Arc-Flash | NETA Exam Prep | NICET Certification Talk
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Just took my level 3 test today and did not pass with a 387. My test had a lot of commission questions and a lot of algebra. I wish the best to anyone else...

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

hello all, I need help to reset my sel351s relays on factory defaults Level 2 =>>R_S Not allowed thank you

We may be testing some DC breakers soon, and typically use a Multi-Amp CB 225 tester for standard AC testing. Any guidelines on using an AC test set for DC...

Commissioning agents want to switch ups system under full load and they want us to do it. What would you guys do?

If a breaker is timing at 10 cycles slower than nameplate and 2nd time it is 4 cycles slower, what is the best course of action next? Your Answer: Breaker...

I would say about 25% of the questions on the exam were on this forum.

I've recently went and visited an Omicron facility in Houston. We went for the line impedance testing abilities, but while we were there I was able to ask...

I have been given access to start a study group on Discord for test prep. I am thinking once or twice a week we meet and discuss topics and learn together as...

What do you guys use for computers and the best way to set up power dB without failing? Operating this system is awesome...when it works. Either having...

This exam was harder than the previous one. It asked more practical field questions than straight and direct questions. Multiply: magnitude 15 at 30 degrees...

Hey all, So I've been placed in the Relay team at work and have been at it for nearly 2 months. The most notable work experience so far has been terminating...

What effect, if any, does negative tank pressure have on transformer power factor? I've never known of it being an issue but another tech on site seems to...

Does anyone know how to defeat ground fault on these trip units during primary injection? I know you can series the contacts but that is a pain. Im wondering...

Does any have or use a CB simulator during functional relay testing? Haven't had much luck looking else wear online. If you do, can you provide any details you...

As part of our ongoing effort to make this community the best it can possibly be for our members, we are pleased to kick off yet another community posting...

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