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- what is this unit?
  
  Electrical Testing Talk 0
  
  i buy surplus electrical equipment from main power company in ny 3 of these tanks were in lot 27" tall 18" diameter pressure gage goes from 0/30 psi up and...
  
  Last post by treeman250r 3 Days Ago
- Breaker testing courses
  
  Electrical Testing Talk 2
  
  Looking for some free courses or instruction on the basics of breaker testing. Assisted a few times and the Coordination study along with the trip settings...
  
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- Circuit Breaker Simulator
  
  P&C / Relay Testing Talk 4
  
  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...
  
  Last post by woodm503 5 Days Ago
- NETA III Test April
  
  NETA Level 3 Exam 6
  
  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...
  
  Last post by ecubed 5 Days Ago
- NETA TEST SCORING
  
  NETA Level 3 Exam 1
  
  Does anyone know how the score is calculated? I know that you need a 410 or greater to pass, but I am not sure what the score would be if you answered every...
  
  Last post by ecubed 5 Days Ago
- Reduced current let-through
  
  NETA Level 3 Exam 0
  
  I understand that using current limiting fuses can accomplish this. However I was under the impression that lowering the instantaneous settings within the trip...
  
  Last post by jbach_943 6 Days Ago
- Community Posting Competition Fall 2019 - Enter to win cool prizes!
  
  News and Announcements 2
  
  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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- Can anyone recommend some good DLRO leads/test probes?
  
  Electrical Testing Talk 7
  
  Has anyone found a set of ductor test leads/probes that can withstand industrial shut down environments / harsh conditions. The delicate spring loaded ones...
  
  Last post by NBatson 6 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
- 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 4 Weeks Ago
- 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
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- Study Group on Discord?
  
  NETA Level 3 Exam 19
  
  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...
  
  Last post by SecondGen June 7, 2019
- Transformer power factor under vacuum
  
  Electrical Testing Talk 13
  
  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...
  
  Last post by SecondGen August 5, 2019
- Determine total reactive resistance of this circuit
  
  NETA Level 3 Exam 9
  
  This question appeared on the NETA III exam. Find the total reactance in this circuit. I distinctly remember it because it was the very first question to...
  
  Last post by Kalbi_Rob August 17, 2019
- Power Factor 15kV Vac Breakers
  
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- 5,000A Magnum SB Ground Fault verification
  
  Electrical Testing Talk 8
  
  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?
  
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- Dry-Type Transformer Testing
  
  Electrical Testing Talk 8
  
  Hi guys, I need some help. I am testing a Dry Type 1500 kVA tranformer. Insulation tests are okay but in Ratio test my device giving an "High Execuation...
  
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- ANSI/IEEE Device Numbers on NETA II Exam
  
  NETA Level 2 Exam 8
  
  Hi everyone, What are the key device numbers to have memorized for the NETA Level II Exam
  
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- Building fundamental knowledge of Relay Protection
  
  P&C / Relay Testing Talk 8
  
  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...
  
  Last post by cotton 2 Weeks Ago
More topics: Electrical Testing Talk | Relay Testing Talk | Safety & Arc-Flash | NETA Exam Prep | NICET Certification Talk
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i buy surplus electrical equipment from main power company in ny 3 of these tanks were in lot 27" tall 18" diameter pressure gage goes from 0/30 psi up and...

Looking for some free courses or instruction on the basics of breaker testing. Assisted a few times and the Coordination study along with the trip settings...

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...

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...

Does anyone know how the score is calculated? I know that you need a 410 or greater to pass, but I am not sure what the score would be if you answered every...

I understand that using current limiting fuses can accomplish this. However I was under the impression that lowering the instantaneous settings within the trip...

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...

Has anyone found a set of ductor test leads/probes that can withstand industrial shut down environments / harsh conditions. The delicate spring loaded ones...

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 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...

This question appeared on the NETA III exam. Find the total reactance in this circuit. I distinctly remember it because it was the very first question to...

In the NETA ATS and MTS power factor testing for a medium voltage vac breaker is an optional test. I don't believe it is a recognized test by manufacturers....

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?

Hi guys, I need some help. I am testing a Dry Type 1500 kVA tranformer. Insulation tests are okay but in Ratio test my device giving an "High Execuation...

Hi everyone, What are the key device numbers to have memorized for the NETA Level II Exam

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...

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