October 13, 2020
USA (Houston)
CT Analyzer

Current Transformer Testing and Analysis

October 13, 2020
USA (Houston)
CT Analyzer


Learn how to use the CT Analyzer effectively to test and analyze current transformers.  This course will also provide you with an understanding of the standards that apply to CT and see how the test results relates to the CT class and ratings.


  • Performing testing of current transformers using the CT Analyzer 
  • Evaluating test results
  • Creating customized reports using the CT Analyzer PC software


1 day


8 am - 5 pm


*** There is still a chance that in-person classes for the end of 2020 may be canceled due to COVID-19 safety measures.  We will update the schedule 2 months before the class.  Please contact us at academy.usa​(at)​omicronenergy.com for the latest status ***

You will receive a personal email with all course information such as agenda and route directions shortly before the training course.

OMICRON’s CTA training course is designed to provide the essential information needed to “assess” the condition of your current transformer assets. Participants will be introduced to the function and operation of the OMICRON CTA. Participants will learn current transformer theory, test methods, and data analysis strategies, which includes the most up to date techniques and practices that can be applied to current transformers. All subjects presented are adequate for all levels of expertise, and all examples are derived directly from field experiences. This is a comprehensive one-day training course, and will include both classroom and hands on testing components.

 The training will consist of 5 components.

  • Introduction to Current Transformers
  • Performing CTA Measurements
  • Analysis and Interpretation of CTA Results
  • Operation of CTA Instrument
  • Hands on Current Transformer Testing

Introduction to Current Transformers

  • Basic Current Transformer Theory
  • Protection CTs
  • Metering CTs
  • Accuracy Classes and Ratings
  • IEEE and IEC Standards
  • Ratio (Single and Multi) (Primary Injection/VoltageMethod)
  • Excitation and Saturation (B-H Curves)
  • Burden
  • DC Winding Resistance
  • Effects of Residual Magnetization 
  • Buried CTs
  • CTs in Transformers
  • CTs in Breakers

Performing CTA Measurements

  • Determining the Test Plan
  • Test Procedures and Safety
  • Test Connections
  • Grounding Requirements and Use of Test Leads
  • Recommendations for Successful CTA Measurements
  • Avoiding Measurement Errors and Recognizing Faulty CTAMeasurements

Analysis and Interpretation of CTA Results

  • Interpretation Strategies
  • Failure Modes
  • Limits and Parallelograms
  • Knee-Point Excitation (IEEE30/45 : IEC)
  • Assessment to Industry Standards (IEEEC57.13, IEC60044)
  • Residual Magnetization

Operation of CTA Instrument

  • Software Training - This will include: CTA Start Page, Firmware and Software Upgrades and Management, Creating Test Plan, Configuring Test Parameters and User Preferences, Saving Results, Excel File Loader, Generating Reports
  • Hardware Training - This will include: Operation of the Instrument, Communication Options, Setup and Configuration of SB2, Understanding and Using the Test Leads

Hands on Transformer Testing

  • Generating Test Plan and Settings from Nameplate
  • Using both Standalone and PC Control
  • Testing Single Ratio CTs
  • Testing Multi-Ratio CTs
  • Testing both Protection and Metering CTs
  • Using the Guesser Function
  • Measure the Residual Magnetism
  • Perform Burden Measurement
  • Save Data and Generate Test Report

USD 720
per person, excludes tax

„Theoretical and practical units came one after another so that the things learned could be applied immediately.“

Student's feedback

Through our courses, you will gain thorough knowledge of assets and applications in electrical power systems.

Application knowledge

You will receive comprehensive manuals for later reference. 

Professional training material

Our experienced trainer takes your specific questions into account during the training. Every participant has the possibility to discuss questions with the group members and the trainer.

In-depth discussions
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