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7 Replies
3421 Posts
Assuming a sensible size pole those insulators suggest 6 or 11kV. Could be a 2 wire HV feed, or DC I suppose.
Mike.
Mike.
373 Posts
I'm seeing three wires, but only two insulators - nothing on the top/apex.
No reason why 3-phase has to have 3 wires each insulated from earth.
Clive
No reason why 3-phase has to have 3 wires each insulated from earth.
Clive
296 Posts
The answer is in these 4 wire pylons.
For historic reasons germanic land railways use 15 kV single phase at 16 2/3 Hz and have their own power stations and grid. The first picture was a single phase, probably 25kV line going to a mast mounted transformer somewhere.
The picture above is part of the SBB 132kV grid.
For historic reasons germanic land railways use 15 kV single phase at 16 2/3 Hz and have their own power stations and grid. The first picture was a single phase, probably 25kV line going to a mast mounted transformer somewhere.
The picture above is part of the SBB 132kV grid.
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