Premium Membership ♕

Save 50% on all EEP Academy courses with Enterprise Membership Plan and study specialized LV/MV/HV technical articles & guides.


Proper operation and safety of electrical power distribution networks, from the electrical power station right through to the point of use, is ensured by protection and control/monitoring equipment.

This equipment requires permanent knowledge of the two fundamental electrical values, namely current l and voltage U. The knowledge of these values has many angles:

  • type of current (AC or DC);
  • voltage level (low voltage – LV, high voltage – HVA and HVB-);
  • transient evolutions of these values linked to status changes occurring naturally or accidentally in operation of electrical networks.

A number of physical phenomena can be used to measure AC currents. These methods result in levels of performance which have a varying degree of compatibility with those required by the various protection, operation and safety levels sought. Evaluation of sensor performance is vital to ensure their best possible specification for installation on a network. This requires knowledge of how the different types of sensors work.

Sensor functions

Sensors have three main functions:

  • providing a correct image, as accurate as possible, of the electrical value to be measured;
  • isolating the power networks from the measuring, protection and control/monitoring networks;
  • ensuring either interchangeability between the measuring, protection and control/monitoring units or performing one specific function of these units.

Providing a correct and accurate image

Based on the two characteristic values of all electrical networks, i.e. current and voltage, the measuring, protection and control/monitoring equipment defines a certain number of parameters such as: cos j, threshold overshooting, instantaneous power,…

AUTHOR: Schneider Electric expert | Christian TEYSSANDIER

Title:From current transformers to hybrid sensors, in HV
Download:Right here | Video Courses | Membership | Download Updates

From current transformers to hybrid sensors, in HV

Premium Membership

Get access to premium HV/MV/LV technical articles, advanced electrical engineering guides, papers, and much more! It will help you to shape up your technical skills in your everyday life as an electrical engineer.
50% Discount 💥 - Save 50% on all 90+ video courses with Enterprise Membership plan.

More Information

Leave a Comment

Tell us what you're thinking. We care about your opinion! Please keep in mind that comments are moderated and rel="nofollow" is in use. So, please do not use a spammy keyword or a domain as your name, or it will be deleted. Let's have a professional and meaningful conversation instead. Thanks for dropping by!

sixty five  −  fifty nine  =  

Learn How to Design Power Systems

Learn to design LV/MV/HV power systems through professional video courses. Lifetime access. Enjoy learning!

Subscribe to Weekly Newsletter

Subscribe to our Weekly Digest newsletter and receive free updates on new technical articles, video courses and guides (PDF).
EEP Academy Courses - A hand crafted cutting-edge electrical engineering knowledge