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chave seccionadora de faca unipolar

English translation: single-pole knife switch

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Portuguese term or phrase:chave seccionadora de faca unipolar
English translation:single-pole knife switch
Entered by: Jennifer Byers
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03:08 Sep 1, 2008
Portuguese to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng
Portuguese term or phrase: chave seccionadora de faca unipolar
I think this is something like a single-pole section switch, but then they ask for "laminas da faca em cobre etc" , what are the laminas?
Jennifer Byers
single-pole knife switch
Explanation:
or "knife blade switch"

Today, use of knife switches has been confined to 1) heavy-duty industrial applications and 2) demonstration purposes - science projects for example. The knife switch has a metal lever, insulated at the 'free end' that comes into contact with a metal 'slot'. Since the electrical connections are exposed, knife switches are never seen in household wiring.

This type of switch is a Single Pole Single Throw (or SPST). This means that it controls one wire (pole) and it makes 1 connection (a throw). Yes, this is an on/off switch, but a 'throw' only counts when a connection is made. 'Off' is not considered a 'throw'.

http://www.1728.com/project2.htm
Selected response from:

Carlos Quandt
Brazil
Local time: 15:54
Grading comment
This was very helpful, many thanks.
4 KudoZ points were awarded for this answer

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Summary of answers provided
4single-pole knife switch
Carlos Quandt


  

Answers


11 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
single-pole knife switch


Explanation:
or "knife blade switch"

Today, use of knife switches has been confined to 1) heavy-duty industrial applications and 2) demonstration purposes - science projects for example. The knife switch has a metal lever, insulated at the 'free end' that comes into contact with a metal 'slot'. Since the electrical connections are exposed, knife switches are never seen in household wiring.

This type of switch is a Single Pole Single Throw (or SPST). This means that it controls one wire (pole) and it makes 1 connection (a throw). Yes, this is an on/off switch, but a 'throw' only counts when a connection is made. 'Off' is not considered a 'throw'.

http://www.1728.com/project2.htm


    Reference: http://www.claytonengineering.com/Training/myweb6/Module19/O...
Carlos Quandt
Brazil
Local time: 15:54
Native speaker of: Portuguese
PRO pts in category: 4
Grading comment
This was very helpful, many thanks.
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Voters for reclassification
as
PRO / non-PRO
PRO (3): Joon Oh, Maria José Tavares, Carlos Quandt


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Changes made by editors
Sep 1, 2008 - Changes made by Carlos Quandt:
LevelNon-PRO » PRO


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