Unidentified types
Contents
Various British pylon types are presently unidentified. Those that can be properly represented with a photograph or a diagram are listed here. Items only accessible via Street View are not included, as no pages link to Street View so long as Google maintain incomprehensible URLs.
All diagrams on this page are to scale at 12 pixels per metre.
33 and 66 kV
- Gloag Type 13, 66 kV, Welland:
New Mills type
At New Mills in Derbyshire (originally a line from Buxton to New Mills) there are towers that look to be a variant of SEE SL3(b) with earthwire peaks, for example this (likely height-extended) tower :
Marshall 66 kV
Per [Marshall], a design closely matching J L Eve C15 0.15″ was the standard 66 kV type in 1933.
Nicholls 66 kV
Per [Nicholls], this was the standard 66 kV type in 1945. The design is very similar to NWE SL4 from 1936 and SEE SL6 from around the same type. NWE SL4 uses greater crossarm spacing (10′–6″ instead of 8′–6″) to accommodate tougher environmental conditions, while the SEE SL6 type appears to be around the same size as the type in [Nicholls].
No lines are presently known to use this type.
| Type | Source | Height | Base width | Overall width |
|---|---|---|---|---|
| D3 | [Nicholls] | 65′–0″ (19.8 m) | 8′–6″ (2.6 m) | 18′–6″ (5.6 m) |
| D60 | 64′–0″ (19.5 m) | 16′–0″ (4.9 m) | 21′–9″ (6.6 m) |
| Tower type | Peak to top crossarm | Top to middle crossarm | Middle to bottom crossarm | Bottom crossarm to ground |
|---|---|---|---|---|
| D3 | 4′–3″ | 8′–6″ | 8′–6″ | 43′–9″ |
| D60 | 7′–0″ | 8′–6″ | 8′–6″ | 40′–0″ |
Peak to top crossarm for the D3 appears to read “4ft 6in” in [Nicholls] but it would have to be “4ft 3in” to get the tower height specified. For now it is being taken as 4′–3″.
132 kV
Stafford–Wolverhampton
The 1930s line between Stafford and Wolverhampton uses CE PL1 angle towers in conjunction with a line tower that appears to be a precursor to CE PL3 S2.
Another tower of this type appears on the older line between Stourport substation to Bishops Wood substation. The line is too short to draw accurate conclusions but the pattern appears to be the same.
Crossing towers
Moved to the crossing towers page.