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- Transformer Winding Resistance
  
  NETA Level 2 Exam 0
  
  I have a transformers winding resistance: T1(LV SIDE), 3MVA, 34.5/.480 KV X1-X0= 0.130 mΩ x2-x0= 0.408 mΩ x3-x0= 0.320 mΩ T2(LV SIDE), 3MVA, 34.5/.480 KV...
  
  Last post by janmeinard 1 Day Ago
- Just Passed NETA Level 2
  
  NETA Level 2 Exam 5
  
  Passed that rascal just in time for the holidays. Glad to have it behind me. Testguys helps a lot. I went ahead and purchased Testguys pro and used the hints...
  
  Last post by ltzryder21 2 Days Ago
- Which relay is used to protect feeders?
  
  NETA Level 2 Exam 5
  
  So the question reads: "Which relay is used to protect feeders?" and the possible answers are: - MHO relay - Translay Relay - Merz Price Relay -...
  
  Last post by MakinThatBacon 1 Week Ago
- Labeling conductor in relay/ct/scada cabinets
  
  Electrical Testing Talk 0
  
  Hi all, I was wondering if anyone has a "standard" practice of doing this. I'm at a new substation and the all the outdoor facilites:1. 115-60kV transformer...
  
  Last post by prime_mover 1 Week Ago
- VLF vs AC HiPot
  
  Electrical Testing Talk 13
  
  So, recently went onto a job to perform VLF testing of 2 sets of 35kV cables, when the customer threw a curve ball at me to test the 35kV breakers. I had no ac...
  
  Last post by NBatson 1 Week 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 Factor Testing: Voltage Considerations Explained
  
  The first step in any comprehensive testing approach is to create a plan that ensures the safety of both the equipment under test and personnel performing the test. Keeping the device under test safe... Continue Reading
  
  Posted By testguy January 4, 2021
- Motor Nameplate and Ratings Explained
  
  We explain the markings found in NEC along with other common terms and ratings included on motor nameplates. Continue Reading
  
  Posted By testguy August 30, 2020
- Electrical Drawings and Schematics Overview
  
  Designing, installing, and troubleshooting of electrical systems requires the use of various drawings to give engineers, installers, and technicians a visual representation of the systems they work... Continue Reading
  
  Posted By testguy July 19, 2020
- Insulating Liquids: Basic Properties, Types and Applications Explained
  
  Fluid inside electrical apparatus is the lifeblood that serves both as a dielectric and a cooling medium. Continue Reading
  
  Posted By testguy June 25, 2020
- 4 Critical Tests for Evaluating HV Circuit Breaker Performance
  
  Regardless of the breaker type, its important to test their components regularly to help ensure proper operation in case of a system fault or switching operation. Continue Reading
  
  Posted By testguy March 9, 2020
- 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
More Technical Articles...
Popular on TestGuy
- Transformer Winding Resistance
  
  Electrical Testing Talk 12
  
  Hi everyone, I hope you all doing okay. I wonder something and you are the best crew i can ask :) When we test winding resistance test for transformer we...
  
  Last post by SecondGen March 29, 2021
- NETA Governance and Influence
  
  Electrical Testing Talk 11
  
  I think NETA is influenced by some specific testing companies. Also they govern NETA test. Who will agree with this?
  
  Last post by southbury September 5, 2020
- Doble M4000 Temp Sensor Help
  
  Electrical Testing Talk 9
  
  Looking to repair our M4000 temp/humidity sensor cable, can anyone help with the pinouts? Connector pins are labeled 1-4, need to know which color goes to...
  
  Last post by SecondGen January 26, 2021
- 15kv vacuum breaker maintenance hipot test voltage
  
  Electrical Testing Talk 7
  
  Wondering what the test voltage is for a 15kv vacuum breaker (13.8kv nominal voltage) for AC hipot. Maintenance test. Thanks!
  
  Last post by gasman October 8, 2020
- Testing Guide for new Engineers
  
  Electrical Testing Talk 7
  
  Hello guys, I hope you all are doing well. I want to learn Designing, Testing and Relay testing. I have 7 years of experience in substation projects but I...
  
  Last post by Bob_Woodward August 10, 2020
- Relay Test Supplies
  
  P&C / Relay Testing Talk 7
  
  I have found that the old site where I purchased relay testing cable, and various knick knacks for assisting with relay testing has gone away. I am curious if...
  
  Last post by khanhamza February 6, 2021
- Electronic Molded Case CB Test Data ?
  
  Electrical Testing Talk 7
  
  I received a test report for an molded case CB with electronic trip unit, in the comments it reads "Megger Load Side Only. Contact Resistance Does Not Meet...
  
  Last post by Kalbi_Rob 4 Weeks Ago
- D-Y Transformer TTR Question
  
  NETA Level 2 Exam 6
  
  Hi there I am new to this so please excuse me if I post this on the wrong place. Anyway took the level 2 practice Exam on test guy and the one of the question...
  
  Last post by southbury September 5, 2020
More topics: Electrical Testing Talk | Relay Testing Talk | Safety & Arc-Flash | NETA Exam Prep | NICET Certification Talk
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I have a transformers winding resistance: T1(LV SIDE), 3MVA, 34.5/.480 KV X1-X0= 0.130 mΩ x2-x0= 0.408 mΩ x3-x0= 0.320 mΩ T2(LV SIDE), 3MVA, 34.5/.480 KV...

Passed that rascal just in time for the holidays. Glad to have it behind me. Testguys helps a lot. I went ahead and purchased Testguys pro and used the hints...

So the question reads: "Which relay is used to protect feeders?" and the possible answers are: - MHO relay - Translay Relay - Merz Price Relay -...

Hi all, I was wondering if anyone has a "standard" practice of doing this. I'm at a new substation and the all the outdoor facilites:1. 115-60kV transformer...

So, recently went onto a job to perform VLF testing of 2 sets of 35kV cables, when the customer threw a curve ball at me to test the 35kV breakers. I had no ac...

Hi everyone, I hope you all doing okay. I wonder something and you are the best crew i can ask :) When we test winding resistance test for transformer we...

I think NETA is influenced by some specific testing companies. Also they govern NETA test. Who will agree with this?

Looking to repair our M4000 temp/humidity sensor cable, can anyone help with the pinouts? Connector pins are labeled 1-4, need to know which color goes to...

Wondering what the test voltage is for a 15kv vacuum breaker (13.8kv nominal voltage) for AC hipot. Maintenance test. Thanks!

Hello guys, I hope you all are doing well. I want to learn Designing, Testing and Relay testing. I have 7 years of experience in substation projects but I...

I have found that the old site where I purchased relay testing cable, and various knick knacks for assisting with relay testing has gone away. I am curious if...

I received a test report for an molded case CB with electronic trip unit, in the comments it reads "Megger Load Side Only. Contact Resistance Does Not Meet...

Hi there I am new to this so please excuse me if I post this on the wrong place. Anyway took the level 2 practice Exam on test guy and the one of the question...

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