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CS-PL1

Caveat

Due to the limits of the available data, details on the pylon pages are incomplete and in places inaccurate or incorrect. Pages typically only cover standard tower types and common variants. This information is provided for enthusiasts and those of a curious mind and is not authoritative. Additional source material is welcome, in particular drawings. Most data and illustrations provided are sourced from industry-related material. See the sources page for a list of sources and the series page for a list of series.

Contents

Overview

CS PL1 was the first power line scheme to form part of the National Grid, using towers designed by Milliken Brothers. It is only known to have been used for two PL1 schemes: CS PL1 (Central Scotland) and SEE PL2 (South East England). It was followed by a revised design used for most of the other CEB PL1 schemes (not including MEE and SEE). [Standard Tower Types] uses the description “CS-PL1” for this type.

General data

Height (straight line tower) 66′–3″ (20.2 m) (S2)
78′–3″ (23.9 m) (D2)
Voltage 132 kV
Dates back to 1928 (drawings)
Known conductors Single
Circuit count Single, double

Can be confused with

Lines

Various lines have been found to date. A few are confirmed and detailed below:

Double-circuit lines confirmed so far:

Single-circuit lines confirmed so far:

Tower forms

Milliken design as per the 1928 CEB annual report:

CS PL1 A1 / S2
CS PL1 B1 / S10
CS PL1 C1 / S30
CS PL1 D1 / S60/ST
SEE PL2 ST
CS PL1 A2 / D2
SEE PL2 D2
CS PL1 C2 / D30
CS PL1 D2 / D60/DT
SEE PL2 DT (72′–6″) (BI Cables)
SEE PL2 DT (74′–6″) (BI Cables)

CS PL1 towers located near Kirknewton in West Lothian can be seen on Flash Bristow’s Pylons around the UK page.

PL1 transposition towers are omitted from the Tower Bible.

According to the enhanced tower bible, the SEE PL2 DT was a British Insulated design, although it closely resembles CS PL1 D60/DT. The tower is 72′–6″ tall with a 4 foot tall top crossarm. An alternative top crossarm, 6 foot tall, is also shown, with no explanation; the overall height is given as 74′–6″.

Examples

View full-size image
S2 (SEE PL2?)

Tower details

Pending.