# Homework Help: Grounding system simulator

1. Mar 31, 2013

### hawk_zoro

hi all dear members…
this summer i have a final year project to graduate as an electrical engineer …
my topic is to design and implement a simulator of a protective grounding system that contains the 3 types of circuits … that it :
TT, IT, and TNC(s) … and adding the adequate protective circuit and so on ….
i found some data but still not enough … would be glad if you help me here ….
Hawk .

Last edited: Mar 31, 2013
2. Mar 31, 2013

### Staff: Mentor

Welcome to the PF.

3. Apr 2, 2013

### hawk_zoro

actually i am asking you to help me....
wish that you can ...
thanks

Last edited by a moderator: Apr 2, 2013
4. Apr 2, 2013

### Runei

What does TT, IT and TNC stand for? Then we might be able to go from there.

5. Apr 2, 2013

### Aussielec

Are you sure it's not TT, IT and TN? A TN-C-S system is a form of TN protective earthing (TN-S, TN-C and TN-C-S).

Anyway yes we can help you but you need to ask a question first. Are you looking for advantages and disadvantages of each system? Applications? Operation? Types of protective devices used?

6. Apr 3, 2013

### CWatters

http://www.neweysonline.co.uk/Earthing/Static.raction [Broken]

Last edited by a moderator: May 6, 2017
7. Apr 5, 2013

### hawk_zoro

thnks dude ...
well first i know almost eveything about each grounding system ..
what i dont know is what is the adequate protective device ( fuses and relays) for each circuit .. couz i heard that each one need specific protection ..

other thing .. i want to implement a circuit of that ..
i mean a sourse, a load (resistors) and protectice device and test it practically to see what's the advantage of grounding in the system ..
hope i make it clear ...

8. Apr 5, 2013

### hawk_zoro

they stand for the 3 main grounding systems ...
TT = tera-tera = earth_earth
IT = dont know but we use an impredance here between the neutral and the groung
TNC(S) = tera- neutral ... and there r 2 different crts

9. Apr 24, 2013

### hawk_zoro

my purpose is to implement a simulator ( circuit) that describes how the 3 types of grounding are working ...
for educational purpose .. that is i will let this circuit in my isntitut as a good example of grounding

the steps are ...
i need power supply ..
and i need protective elements ...
and each type of grounding as a specific adequate protective element ....
example :
the TT grounding type needs the differential relay ...
the IT needs impedance controller and so on .....

so i need those details ..
i want to simulate them in simulink (matlab) before implementing the circuit ....

hope it is clear ...