How to wire a 3 phase motors in different electrical networks?

[zitrex]

How to wire 3 phase motor in deferent electrical networks ?

How to wire 3 phase motor in deferent electrical networks ?

In [B ] TN -C -S [/ B] It Should be easy .

[ ATTACH = CONFIG] 116463 [ / ATTACH ]

In [B ] TN -C [/ B]
We have PEN wire . I think it should look like this .

[ ATTACH = CONFIG] 116464 [ / ATTACH ]

What about wiring in TT network When We have 3 lines and N ?
I would like to know how it looks in practice .

 

[KlausST]

Re: How to wire 3 phase motor in deferent electrical networks ?

Hi,

for a TT network, you could connect PE to the PE connection and N to the W2/U2/V2 connection.
Usually there should be no current on the N line, so during normal operation it makes no sense.


Klaus

 

[zitrex2]

Re: How to wire 3 phase motor in deferent electrical networks ?

So in TNC I can/should connect PEN to engine cower ? In TT I don't have PE from electrical network and I must create earthing system by myself with metal spike in ground. So IT and TT electrical network are basically same for 3 phase engine (N not used). Do i think corectly ?

 

[FvM]

Re: How to wire 3 phase motor in deferent electrical networks ?

for a TT network, you could connect PE to the PE connection and N to the W2/U2/V2 connection.

N is never connected to star point of three phase motors. Neither in a TT network.

 

[zitrex2]

Re: How to wire 3 phase motor in deferent electrical networks ?

Long story short. You have to connect phase lines to coil terminals and PE / PEN to engine cower. In TT You just must connect cower to GROUND by yourself. N should not be connected. Problem solved.