[Tagging] Fwd: Feature Proposal - RFC - Line clamps

Michael Patrick geodesy99 at gmail.com
Thu Aug 9 00:43:06 UTC 2018


> Do you agree to currently tag this as tower:type=suspension and maybe
later according to proposal as line_clamp=suspension? Is there an opposite
of suspension in English?I only find "suspension" in IEC vocabulary

After perusing Electropedia (IEC), I noticed some of the clamp entries
referred to 'posts', so I looked at power line equipment catalogs under
insulators, and alongside Suspension Insulators, Spool Insulators, Pin Type
Insulators, there is also a Post Insulators, and some engineering
references.

>From "The transmission and distribution of electrical energy
<https://archive.org/details/in.ernet.dli.2015.65422>" 3rd ed.  Cotton and
Barber, page 165: There are three types used in connection with overhead
lines, viz. :


   1. Pin-type.
   2. Suspension-type.
   3. Strain-type.( includes 'Shackle'?)

It seems the various 'clamps' are used in conjunction with the position /
orientation dictated by the major type insulator ( top, middle, spool(with
clevis)). Post Insulators seem to incorporate both support, stand-off, and
insulating functions in all orientations ( pointing up, down or slantwise
).

Probably the simplest antonym for 'suspension' conductor on bottom ) case
is 'pin' ( conductor on top ), and if you want 'spool' for the minority
conductor in the middle.

Michael Patrick



Data Ferret
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