courants d'envahissement

English translation: inrush current

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
French term or phrase:courant d'envahissement
English translation:inrush current
Entered by: Tony M

12:32 May 21, 2013
French to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng
French term or phrase: courants d'envahissement
Hi everyone, I'm looking for a translation of courants d'envahissement.

Here is the sentence it's in: Toute protection de type différentiel doit être insensible aux courants d'envahissement (mise sous-tension).

The document is about transport automation electronics and this particular bit is about the protection of converter transformers.

I'd really appreciate any ideas. Thanks!
Emma Mawer
France
Local time: 23:35
inrush current
Explanation:
From the description given, this seems to be what they're talking about (even though the commoner term would probably be 'courant d'appel')

In more lay language, we might say 'switch-on surge current' — but I think my suggested term would be more appropriate in your obviously more formal context.
Selected response from:

Tony M
France
Local time: 23:35
Grading comment
Thanks! :)
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +4inrush current
Tony M
2 -1invasive current
Bashiqa
Summary of reference entries provided
courant d'appel
Johannes Gleim

  

Answers


7 mins   confidence: Answerer confidence 2/5Answerer confidence 2/5 peer agreement (net): -1
invasive current


Explanation:
Have a look at the following and see if it helps
AC invasive method
Measuring AC current and voltage using a current sensing resistor (shunt) and voltage divider.

This design is an adaptation of the great work by Cliff Jao and Xi Guo on the PowerBox project.

In comparison with the CT sensor and Voltage adapter method this method requires more care due to components being inserted directly into the high voltage mains wiring. It is suited to smaller power applications. For whole house energy use the CT sensor and Voltage adapter method is a safer and simpler way to go, especially if your new to electronics.

Bashiqa
France
Local time: 23:35
Works in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 49

Peer comments on this answer (and responses from the answerer)
disagree  Tony M: I don't think this term would really make sense, Chris. You have a fortuitous collocation of 'invasive' and 'current', but in your rexample, it is the 'method' that is 'invasive', not the current.
1 hr
  -> Serves me right for not reading the question properly. If I'm the fool rushing in, not sure about you being the angel.
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1 hr   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +4
courant d'envahissement
inrush current


Explanation:
From the description given, this seems to be what they're talking about (even though the commoner term would probably be 'courant d'appel')

In more lay language, we might say 'switch-on surge current' — but I think my suggested term would be more appropriate in your obviously more formal context.

Tony M
France
Local time: 23:35
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 2116
Grading comment
Thanks! :)

Peer comments on this answer (and responses from the answerer)
agree  Bashiqa: I think I would opt for 'surge'.
10 mins
  -> Thanks, Chris — very gentlemanly of you! (angel, me?!)

agree  Johannes Gleim: No surge current, but inrush current, see reference
26 mins
  -> Danke, Johannes!

agree  Terry Richards: inrush
47 mins
  -> Thanks, Terry!

agree  B D Finch
1 hr
  -> Thanks, B! :-)
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Reference comments


1 hr peer agreement (net): +1
Reference: courant d'appel

Reference information:
Un seul lien pour « courant d'envahissement » trouvé à l’internet :

4.2.1Essai1. Enclenchement de la ligne
Ce phénomène sera déterminé à l'aide de simulations qui permettront des avoir si la compensation série d'une ligne de distribution affecte les courants d'envahissement produits lors de l'enclenchement de transformateurs à vide sur la ligne.
http://bibvir.uqac.ca/theses/24723645/24723645.pdf

Area
Power system protection / General terms
IEV ref
448-11-30
en
inrush current
transient current associated with energizing of transformers, cables, reactors, etc
fr
courant d'appel
courant transitoire associé à la mise sous tension des transformateurs, câbles, bobines d'inductance, etc


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Note added at 1 hr (2013-05-21 14:30:06 GMT)
--------------------------------------------------

Does "surge current" exists?

IEV ref 604-03-15
en
voltage surge
a transient voltage wave propagating along a line or a circuit and characterized by a rapid increase followed by a slower decrease of the voltage
fr
tension de choc (dans le cas d'une onde progressive)
onde de tension transitoire se propageant le long d'une ligne ou d'un circuit et comportant une montée rapide de la tension suivie d'une décroissance plus lente
http://www.electropedia.org/iev/iev.nsf/display?openform&iev...

Inrush current, input surge current or switch-on surge refers to the maximum, instantaneous input current drawn by an electrical device when first turned on. For example, incandescent light bulbs have high inrush currents until their filaments warm up and their resistance increases. Alternating current electric motors and transformers may draw several times their normal full-load current when first energized, for a few cycles of the input waveform. Power converters also often have inrush currents much higher than their steady state currents, due to the charging current of the input capacitance. The selection of overcurrent protection devices such as fuses and circuit breakers is made more complicated when high inrush currents must be tolerated. The overcurrent protection must react quickly to overload or short circuit but must not interrupt the circuit when the (usually harmless) inrush current flows.
en.wikipedia.org/wiki/Inrush_current

Answer: Yes, but not standardized by IEC.

--------------------------------------------------
Note added at 2 hrs (2013-05-21 14:41:51 GMT)
--------------------------------------------------

What is better called "courant de surtension" or "courant de surcharge"

surge current Source 8, record 4, English, surge current
CORRECT
Abbreviations, English
Synonyms, English
French courant de surtension Source 8, record 4, French, courant de surtension
CORRECT, MASC
Abbreviations, French
Synonyms, French
DEF – Short-duration, high-intensity, electric current wave which may sweep through an electrical network, such as a power transmission network, when a portion of it is strongly affected by the electrical activity of a thunderstorm. Source 9, record 4, English, Definition 1 - surge current

DEF – Onde de courte durée et d'intensité élevée du courant électrique qui peut parcourir un réseau électrique, tel qu'un réseau de transport, lorsqu'une de ses parties est fortement influencée par l'activité électrique d'un orage. Source
http://www.btb.termiumplus.gc.ca/tpv2alpha/alpha-eng.html?la...

Area Electrical installations / Voltages and currents
IEV ref 826-11-15
en
overload current (of an electric circuit)
overcurrent occurring in an electric circuit, which is not caused by a short-circuit or an earth fault
fr
courant de surcharge (d'un circuit électrique), m
surintensité se produisant dans un circuit électrique, qui n’est pas due à un court-circuit ou à un défaut à la terre
http://www.electropedia.org/iev/iev.nsf/display?openform&iev...

Note: the terms are sometimes mismatched.


--------------------------------------------------
Note added at 2 hrs (2013-05-21 14:45:02 GMT)
--------------------------------------------------

For different types see records 1 to 3, for instance:

surge current Source 4, record 3, English, surge current
CORRECT
Abbreviations, English
Synonyms, English Main entry terms, French courant de surcharge Source 6, record 3, French, courant de surcharge
CORRECT, MASC
Abbreviations, French
Synonyms, French
Textual Support, English
DEF – The peak electrode current under exceptional conditions such as switching-on conditions or fault conditions. Source 5, record 3, English, Definition 1 - surge current
Textual Support, French
DEF – Surintensité anormale se produisant dans un circuit [entre autres,] en l'absence de défaut d'isolement électrique. Source 7, record 3, French, Definition 1 - courant de surcharge
OBS – Défaut d'isolement : défaillance de l'isolation d'une partie active d'un circuit électrique entraînant une perte d'isolement de cette partie active pouvant aller jusqu'à une liaison accidentelle entre deux points de potentiels différents (défaut franc). Source

Johannes Gleim
Specializes in field
Native speaker of: German
PRO pts in category: 165

Peer comments on this reference comment (and responses from the reference poster)
agree  Tony M
10 mins
  -> Thank you!
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