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400 kV Thames Crossing
The 400 kV Thames Crossing is an overhead power line crossing of the River Thames, between Botany Marshes in Swanscombe, Kent, and West Thurrock, Essex, England. Its towers are the tallest electricity pylons in the UK.
The present crossing was built in 1965, and comprises two 190-metre (623 feet) tall lattice towers either side of the Thames. Some suggest that the choice of this height was deliberate, being just taller than the BT Tower in London. The span is 1372 metres (4501 feet), the minimum height of the conductors over the river is 76 metres (249 feet). Each tower has three crossarms and carries two circuits of 400 kV three-phase AC.
==132 kV Thames Crossing==
There was at one time an earlier 132 kV crossing nearby, with towers 148.4 metres tall. Linking Dagenham and Crossness, it was built between 1927 and 1932 and was part of the Belvedere-Crowlands 132/33/25 kV double circuit. With the cessation of generation at Belvedere Power Station, this line was dismantled in 1987.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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