Thailand transformer opinions please.

[La Poste]

Ok here's a few pictures of my mates transformer that supplies his property, his property is in northern Thailand.




I know the pictures are not great but the tranny doesn't look like it has an earth.
If it has no earth what would members suggest doing to make it safer?
I was thinking:

1. Rod the neutral at the property end to keep the neutral at a safe voltage.
2. Wire the place as normal and then put in a separate earth rod at a certain distance from the neutral rod.
3. RCD or RCBO everything.

I was thinking of installing two rods, one for the neutral and one for the earth so that in the event of say a lost neutral (I'm not a scare monger) the voltage on the metalwork would not jump up, I think a lost neutral in this part of the world is a probable occurrence what with storms and overhead lines.

Does this sound good to people, does this sound like a sensible approach?
Are there any inherent dangers in this approach?
Am I on the right track?

Comments appreciated.

Thanks.

 

[Engineer54]

Looks like that's the mystery solved. I'll admit, I'd never have thought of using the poles reenforcing as an Ufer earth.

PS the tap, all oil filled transformers have them. Usualy with a bung fitted. They are especialy designed for numb-nuts elecricians mates to leave part open, as i found out in the middle of the night when half the works shut down. 20MVA transformers don't like running low on oil.

Usually used just as the down conductor, then a rod or whatever taken off that down conductor. In this case that may be a galvanised plate that runs down to ground level shown in the photo's, so the rod would be taken of of that plate probably underground where it can't be readily seen... Can't really see too clearly, if that is a plate sitting in a recess on the pole, in some photo's it does indeed look as if it is...