SWE PL1(a)&(b)
Contents
Overview
SWE PL1(a)&(b) is an unclear designation. It is only known from Callender’s drawings for the S2 tower. The remainder of the towers are SS-PL1, with the S10 type used for long spans as well as angles. All known lines are single circuit only.
SWE PL1(a)&(b) appears to be a subset of SWE PL1. No further details are known.
General data
| Design contractor |
Callender’s (line tower) Milliken Brothers (angle towers) |
|---|---|
| Voltage | 132 kV |
| Dates back to | 1931 (drawings) |
| Known conductors | Single |
| Circuit count | Single |
Lines
Confirmed so far:
- Exeter to Bridgwater, now truncated to Taunton to Bridgwater
- Exeter to Kingsteignton
- Fraddon substation to Hayle substation
- The double circuit SWE PL1 line from Lydney splits south of Arlingham into two SWE PL1(a)&(b) lines, one continuing to Castle Meads substation in Gloucester and the other circling around to Cambridge Arms switching station on the opposite side of the River Severn.
The only two known SWE PL1(a)&(b) drawings are for the S2, drawn in 1931. These are annotated “T(4) BEA - L45 - East Yelland - Fraddon”. Such a line would have to date from at least 1948, by which time the construction of a PL1-type single-circuit line seems unlikely. Two lines currently exist between these locations: a double-circuit PL16 line, and an L6 line (4VW).
Other uses of the S2 tower:
- Substitute tower on a 33 kV line, Buxton, Derbyshire
- Substitute tower on a CS PL1 line, Bishopton, Renfrewshire
Tower forms
The following diagrams are shown to scale at 12 pixels per metre.
The angle tower diagrams are just pulled from other Milliken PL1 schemes, pending actual drawings.
Examples
Out of range.
Tower details
Crossarm width is the total width across the widest crossarm.
Pending; the dimensions on the drawing are not all legible.
Examples
Out of range.