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The Pylons of Cádiz, also known as the Towers of Cádiz, are two 158 m (518 ft)-tall pylons supporting a double-circuit 132 kV
The suspension towers are situated in Cádiz near Fort Puntales and the Puntales Naval Station and at Matagorda quarter near the commercial wharves. The crossing consists of 16 pylons: two suspension pylons, both 158 metres (518 feet) tall, that carry the line over the
Drawings of Matagorda Pylon
Drawings of Puntales Pylon
Google Maps: Matagorda Pylon (Pylon on Mainland)
Google Maps: Puntales Pylon (Pylon at Cadiz)
Panoramio: picture.
A set on Flickr.
Picture of the strainer
{{DEFAULTSORT:Pylons Of Cadiz Buildings and structures in Andalusia Electric power infrastructure in Spain Cadiz Towers in Spain Powerline river crossings Towers completed in 1960 Energy in Andalusia
The Pylons of Cádiz, also known as the Towers of Cádiz, are two 158 m (518 ft)-tall pylons supporting a double-circuit 132 kV three-phase
Three-phase electric power (abbreviated 3φ) is a common type of alternating current used in electricity generation, Electric power transmission, transmission, and Electric power distribution, distribution. It is a type of polyphase system empl ...
AC powerline over the bay of Cádiz
Cádiz (, , ) is a city and port in southwestern Spain. It is the capital of the Province of Cádiz, one of eight that make up the autonomous community of Andalusia.
Cádiz, one of the oldest continuously inhabited cities in Western Europe, ...
, Spain
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, image_coat = Escudo de España (mazonado).svg
, national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond")
, national_anthem = (English: "Royal March")
, i ...
, running from Puerto Real Substation to the substation of the former Cádiz Thermal Power Station, situated on the peninsula upon which the city of Cádiz stands.
Description
The suspension towers are situated in Cádiz near Fort Puntales and the Puntales Naval Station and at Matagorda quarter near the commercial wharves. The crossing consists of 16 pylons: two suspension pylons, both 158 metres (518 feet) tall, that carry the line over the Bay of Cádiz
The Bay of Cádiz is a body of water in the province of Cádiz, Spain, adjacent to the southwestern coast of the Iberian Peninsula.
The Bay of Cádiz adjoins the Gulf of Cádiz, a larger body of water which is in the same area but further offsho ...
, two strainer portals built of concrete, and at each strainer portal a group of 6 monopolar strainers, which are used to carry the conductors from the strainer portal to the first standard line tower (at the northern end of the span) respectively to the switchyard of Cádiz Substation (at the southern end of the span). The strainer portal at the southern end is situated close to Cádiz Substation, that of the northern end at Matagorda. The rest of the line consists of pylons with three crossbars carrying six conductors. The powerline crossing does not use a ground conductor
In electrical engineering, ground or earth is a reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.
Electrical circuits may be connec ...
in the span section despite its great height.
Design and construction
Each tower is a hollow mast resembling a truncated cone (orfrustum
In geometry, a (from the Latin for "morsel"; plural: ''frusta'' or ''frustums'') is the portion of a solid (normally a pyramid or a cone) that lies between two parallel planes cutting this solid. In the case of a pyramid, the base faces are ...
). The diameter of the frustum decreases from 20.7 metres at the base to six metres at the top. The towers, which rest on reinforced concrete plinths carry on their pinnacle a single crossbar with rhomboid profile, on which the insulators carrying the conductors are fixed. A helical staircase winds its way up the interior of the structure to the top.
This unconventional design was conceived and designed by Italian engineer Alberto M. Toscano. It was chosen because Spanish steel mills were unable to produce massive steel carriers at the time, and importing such carriers was impossible in Francoist Spain
Francoist Spain ( es, España franquista), or the Francoist dictatorship (), was the period of Spanish history between 1939 and 1975, when Francisco Franco ruled Spain after the Spanish Civil War with the title . After his death in 1975, Spai ...
.
The construction was carried out under the supervision and direction of Remo Scalla, a close friend of Toscano. The same team of Toscano, the designer, and Scalla, the builder, also joined forces in building the Pylons of Messina
The Pylons of Messina are two free-standing steel towers, the Sicilian one in Torre Faro and the Calabrian one in Villa San Giovanni. They were used from 1955 to 1994 to carry a 220 kilovolt (150 kilovolt until 1971) power line across the Stra ...
which support the lines that span the Strait of Messina
The Strait of Messina ( it, Stretto di Messina, Sicilian: Strittu di Missina) is a narrow strait between the eastern tip of Sicily (Punta del Faro) and the western tip of Calabria ( Punta Pezzo) in Southern Italy. It connects the Tyrrhenian Se ...
, between Calabria
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, on the mainland of Italy
Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...
, and the island of Sicily
(man) it, Siciliana (woman)
, population_note =
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. The Cádiz project started during the latter part of 1957 and concluded in 1960. Upon completion, the towers were acquired by the Spanish National Institute of Industry.
See also
*Costa de la Luz
The Costa de la Luz (, "Coast of Light") is a section of the Andalusian coast in Spain facing the Atlantic. It extends from Tarifa in the south, along the coasts of the Province of Cádiz and the Province of Huelva, to the mouth of the Guadiana R ...
* List of towers
Several extant building fulfill the engineering definition of a tower: "a tall human structure, always taller than it is wide, for public or regular operational access by humans, but not for living in or office work, and are ''self-supporting' ...
* The Shukhov Tower on the Oka River near Nizhniy Novgorod
Nizhny Novgorod ( ; rus, links=no, Нижний Новгород, a=Ru-Nizhny Novgorod.ogg, p=ˈnʲiʐnʲɪj ˈnovɡərət ), colloquially shortened to Nizhny, from the 13th to the 17th century Novgorod of the Lower Land, formerly known as Gork ...
, Russia
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...
, has a similar design
References
External links
*Drawings of Matagorda Pylon
Drawings of Puntales Pylon
Google Maps: Matagorda Pylon (Pylon on Mainland)
Google Maps: Puntales Pylon (Pylon at Cadiz)
Panoramio: picture.
A set on Flickr.
Picture of the strainer
{{DEFAULTSORT:Pylons Of Cadiz Buildings and structures in Andalusia Electric power infrastructure in Spain Cadiz Towers in Spain Powerline river crossings Towers completed in 1960 Energy in Andalusia