Current transformers – specification errors and solutions

Defining current transformers

After a reminder of current transformers (CTs), the author highlights the errors most often encountered when defining current transformers, an essential and little known link between the electrical network and the protection relays.

It explains how to find a way out of difficult situations: CTs that cannot be manufactured, delays, additional costs, malfunctions, etc. This Cahier Technique should be useful for electricians designing installations, for protection specialists, panel builders and all CT manufacturers. It is in the best interest of all to exchange all information required for the safety and optimisation of CTs.

This Cahier Technique is an operational addition to Cahier Technique no. 194 “Current Transformers: how to specify them”.

AUTHOR: Schneider Electric expert | Paola FONTI

Title:Current transformers – specification errors and solutions
Format:PDF
Size:0.2MB
Pages:21
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Current transformers - specification errors and solutions


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3 Comments

  1. [...] This post was mentioned on Twitter by Electric Engineering, Electric Engineering. Electric Engineering said: Current transformers – specification errors and solutions http://t.co/w2jHG72 [...]

  2. [...] The core-balance current transformer (or CBCT) is normally of the ring type, through the centre of which is passed cable that forms the [...]

  3. [...] A current transformer is defined as as an instrument transformer in which the secondary current is substantially [...]

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