Neutral scheme?

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sara222
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Neutral scheme?




by sara222 » 12/02/10, 09:59

Hello everyone
I am in the process of carrying out a civil engineering guide plan for a mt / bt transformer station and I have a problem with the detail of the earth bar I do not know whether this one is correct or not. the neutral regime is TN
Image
thank you in advance
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Forhorse
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by Forhorse » 12/02/10, 10:21

No idea, it's beyond my skills (at this level I only know the theory) but if someone has the answer I'm fine.
I thought that in TN mode there was only one earth connection, to which both the neutral and the masses of the devices were connected.
The advantage of this regime being that the quality of the earth connection does not influence the efficiency of the protection against indirect contacts.
Now I am amazed to see a specific earth connection for the neutral.
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sara222
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by sara222 » 12/02/10, 10:31

thank you for your answer me too I'm lost that's why I asked the question. I like that if a professional answers us also indicates the section of the neutral cable going to the earth rod and to the transformer .
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elephant
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by elephant » 12/02/10, 11:51

Take no risk and get the official text, possibly phone the electricity company!
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zorglub
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STANDARDS




by zorglub » 24/02/10, 11:33

could this be of use to you?

https://www.econologie.info/share/partag ... sIaKOH.jpg
https://www.econologie.info/share/partag ... d7GeTn.jpg
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zorglub
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by zorglub » 24/02/10, 12:22

apologies: an error is slipped in the photos


https://www.econologie.info/share/partag ... wH0xNG.jpg

read this file
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