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60° and 55° angle tower series comparison

Contents

Overview

Use this page to help identify UK electricity pylon series by D60, S60 and D55 angle towers. Within each voltage class the tower series are arranged in approximate chronological order of introduction. See the comparisons page for other comparisons. See the series page for the list of known series.

Not all series are covered by this page; coverage is limited to available data. See the project completeness page for details.

Three and four circuit and dual voltage

The K1373 D type is three circuit (2 × 66 kV plus 1 × 33 kV).

Rannoch-Abernethy four circuit angle 2
Spey Valley D 132/33 kV
Spey Valley D 132/33 kV, short peak
Milliken E177 F72 (33 kV)
Blaw Knox K1373 D SEW
Blaw Knox K1373 D DEW

Double circuit

60° double-circuit angle towers by series.

33 and 66 kV

SEE SL2 D60/DT
SEE SL3(b) D60
Milliken E177 D60
Milliken K721 D60
SEE SL4 D60
J L Eve C15 0.15 D60
Blaw Knox K1373 C SEW
Blaw Knox K1373 C DEW
Blaw Knox K4611 DC SEW
Blaw Knox K4611 DC DEW
NWE SL7 D60
SEE SL8 D60
NWE SL4 D60
J L Eve C333 D60
Abergavenny/Cwmbran D60
Preston D60
Preston alternative D60
Unidentified D60
Blaw Knox K9906 D60

132 kV

Note that some K1373/K4611-type lines—whose towers are depicted above—have been uprated for 132 kV.

The designated angles for the Tummel–Keith types are not known.

CS PL1 D60/DT
EE PL1 D60
SWE PL1 D60
SEE PL1a D60
SEE PL1(b) D60
Rannoch-Abernethy double-circuit angle 2
Spey Valley D 132/132 kV
Spey Valley D 132/132 kV, short peak
Spey Valley D 132/132 kV with spire
CE PL3 D60 DEW
CE PL4 D60
CE PL4 DD60
SEE PL7 D60
SEE PL7 DD60
Blaw Knox K5735 DD60
SWE PL16 D60
SWE PL16 DD60
PL16 D60 (strengthened)
Eve C670 D60
Eve C670 D60 (strengthened)
Eve C534 D60
Blaw Knox K1373 C DEW, 132 kV
Blaw Knox K4611 DC SEW, 132 kV
Blaw Knox K4611 DC DEW, 132 kV
Blaw Knox T1498 D60L
L7(c) D60
Eve C1415 D60
Quoich–Broadford D60L
L4(m) D60

275 kV

Note that L2 towers were designed for 275 and 380 (or 400) kV and are listed under 400 kV below.

L66 D60
Blaw Knox L3/L3(c) D60
J L Eve L3 D60
Blaw Knox T2175 D60
L8 RD60

400 kV

L2 D60
Balfour Beatty L6 D60
BICC L6 D60
Blaw Knox L6 D60
J L Eve L6 D60
L9(c) LD60/LD40 EC
L6(c) D60
L6m D60
L2 D60 DMC
L8(c) D60
L12 D55
L13 D60
SSE400 D55
AS4 AD55

Single circuit

60° single-circuit angle towers by series.

33 and 66 kV

Milliken E102 S60
SEE SL3(b) S60
Riley and Neate H99 50°, EW inside
Riley and Neate H99 50°, EW outside
Riley and Neate H99 50°, no EW
Riley and Neate H99 strengthened 45′ 50°, EW inside
Riley and Neate H99 strengthened 45′ 50°, EW outside
Riley and Neate H99 60°, EW inside
Riley and Neate H99 60°, EW outside
Riley and Neate H99 60°, no EW
Balfour Beatty S60 (Riley and Neate H99 lines)

110 kV

Blaw Knox K1641 S60

132 kV

CS PL1 S60/ST
EE PL1 S60
SEE PL1a S60
SEE PL1(b) S60
CE PL3 S60 SEW
CE PL3 S60 DEW
Blaw Knox K5297 S60 SEW
Blaw Knox K1201 S60
Blaw Knox K1420 S60

The following types have been observed but no documentation has been recovered and the designations are for convenience only:

L4(m) S60 (A)

275 kV

L34 S60
L8(c) Modified S60 STD
Coylton–Auchencrosh 60° tower STD

400 kV

C-IVI-1 angle