What is this power distribution configuration called?

[Michael Moroney]

Out of curiosity...

In some areas of the US instead of the usual crossarms on poles
carrying the power distribution lines, there is a system described
as follows: A grounded cable runs from pole to pole, suspended
from a short metal arm that holds it away from the pole. This
cable has several insulating hangers hanging from it, about four
between two adjacent poles. These hangers carry three insulated
cables, the three phases. The four cables are held in a diamond
configuration by the hangers. They are only about 9" apart.

Does this system have a name? Perhaps a brand name? What voltage
is the max. this system can use?

 

[Charles Perry]

One is Hendrix Wire-now owned by Kerite, I think.

--s falke

We always called it Hendrix (which is a brand) also. It has another name,
but I don't remember it. It might have been called "bundled". Interesting
to note, it is only partially insulated. The cables are NOT insulated for
full rated voltage. We always had lots of trouble with the corona at the
spacers eating holes in the insulation.

Charles Perry P.E.