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tensione omopolare

English translation: homopolar voltage

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Italian term or phrase:tensione omopolare
English translation:homopolar voltage
Entered by: achisholm

10:00 Sep 27, 2010
Italian to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng / protection devices
Italian term or phrase: tensione omopolare
This is from the description of a voltage protection device:

"Il dispositivo (A) elabora con tecnica numerica tre tensioni di fase o concatenate e la tensione omopolare"
achisholm
United Kingdom
Local time: 00:37
homopolar voltage
Explanation:
Balanced / symmetrical power.

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Note added at 1 hr (2010-09-27 11:31:34 GMT)
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Homopolar is when the phase angles (here you're talking about a three phase system) are equal.

omopolare (elettricamente simmetrico) (elett.), homopolar
[Hoepli's]

Examples:

"The behaviour with respect to homopolar voltages depends on the primary and secondary connections and, more particularly, the presence of a neutral conductor."
[web source]

"As a result, the homopolar voltage measured at the leading out terminal may be extremely low in the case of a remote ground defect occuring close to the other line terminal."
[web source]

I thought 'omopolare' and 'homopolar' were relatively obvious, and didn't require a dictionary translation and examples.
Selected response from:

Mr Murray (X)
Italy
Grading comment
Many thanks.
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +1zero-sequence voltage
Kate Chaffer
3homopolar voltage
Mr Murray (X)
Summary of reference entries provided
see page 3
Valeria Faber

Discussion entries: 1





  

Answers


1 hr   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +1
zero-sequence voltage


Explanation:
Yes, it's what IATE says.

Look up 'omopolare' here: http://std.iec.ch/iev/iev.nsf/2decad0ea7d70589c12574490032b7...
and you'll see the alternative 'a sequenza zero' comes up regularly.

Kate Chaffer
Italy
Local time: 01:37
Works in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 28

Peer comments on this answer (and responses from the answerer)
neutral  Mr Murray (X): That suggestion gives "impedenza omopolare (o di sequenza zero), reattanza omopolare (o di sequenza zero), resistenza omopolare (o di sequenza zero)" 'omopolare' OR 'zero sequence'. There's not enough space to explain 'zero sequence' - the OR is important
15 mins
  -> OR indicates an alternative phrasing: impedenza omopolare means the same as impedenza di sequenza zero
agree  Claire Bennett
1974 days
Login to enter a peer comment (or grade)

5 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5
homopolar voltage


Explanation:
Balanced / symmetrical power.

--------------------------------------------------
Note added at 1 hr (2010-09-27 11:31:34 GMT)
--------------------------------------------------

Homopolar is when the phase angles (here you're talking about a three phase system) are equal.

omopolare (elettricamente simmetrico) (elett.), homopolar
[Hoepli's]

Examples:

"The behaviour with respect to homopolar voltages depends on the primary and secondary connections and, more particularly, the presence of a neutral conductor."
[web source]

"As a result, the homopolar voltage measured at the leading out terminal may be extremely low in the case of a remote ground defect occuring close to the other line terminal."
[web source]

I thought 'omopolare' and 'homopolar' were relatively obvious, and didn't require a dictionary translation and examples.


Mr Murray (X)
Italy
Works in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 11
Grading comment
Many thanks.
Login to enter a peer comment (or grade)




Reference comments


2 hrs
Reference: see page 3

Reference information:
in this Voltage Protection Rele

http://www.orionitalia.com/files/Brochures/Voltage_Protectio...

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Note added at 2 ore (2010-09-27 12:40:10 GMT)
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e qui:

Dicesi corrente omopolare un terzo della somma delle correnti che percorrono i cavi in un determinato punto; se la somma non è nulla c'è una richiusura dovuta a un guasto a terra (a valle o a monte del punto considerato).

Spesso si può discriminare se il guasto è a valle o a monte in base al solo valore della corrente omopolare: questo è il principio di intervento della 51N. Se per via dell'estensione o del modo di gestione del neutro il valore della corrente omopolare non basta, si misura anche la tensione omopolare e si guarda l'angolo da essa formato con la corrente omopolare: questo è il principio della 67N.

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Note added at 2 ore (2010-09-27 12:43:45 GMT)
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http://www.freepatentsonline.com/3624499.html

Valeria Faber
Italy
Specializes in field
Native speaker of: Native in ItalianItalian
PRO pts in category: 37
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