Appendix 615
The system 615 is a three-phase high-voltage transmission - transmission line in Baden-Wuerttemberg . In the course of this line operated by NetzeBW (a 100% subsidiary of the EnBW group) are the two longest spans of all overhead lines in Germany.
course
The line begins at the 20/110 kV transformer station in Calmbach ( 48 ° 46 ′ 22.1 ″ N , 8 ° 36 ′ 2.1 ″ E ), which is located east of the Bad Wildbad district in the valley of the stream of the same name Continuation of a 110 kV line coming from Merklingen . The first approx. Two kilometers to the Enztal crossing leads to the northwest and masts that are equipped with two traverses are used. On the upper traverse, the two circuits are led towards Pforzheim , on the lower a 20 kV medium voltage line, which branches off at Calmbach and leads to a sewage treatment plant.
About 750 meters north-west of Enztal crossing ( 48 ° 47 '28.6 " N , 8 ° 34' 35.1" O ) follows the Eyachtalquerung ( 48 ° 48 '18.3 " N , 8 ° 33' 19.7" O ). This uses upturned Danube masts as crossing masts , the rest of the line runs on one- level masts . It turns northeast, past Neuenbürg and ends in the Schwann substation.
Guy mast at the southern end of the Eyachtal span
Tubular steel masts in the Enztal near Birkenfeld
business
The line was completed in 1992. In addition to supplying the northern Black Forest, it also serves as a replacement for a 110 kV line between Enzberg and Pforzheim. The latter was built in 1928 as a section of a 110 kV line between Pforzheim and Hoheneck and was the first interconnected line between Badenwerk and Württembergischer Landes Elektrizitäts AG (WLAG). The replaced section was only dismantled at the beginning of the 2000s, and aerial photographs from 2000 still show the line as a single-system 110 kV connection.
Although the system 615 was designed for an operating voltage of 110 kV on both circuits, the eastern circuit is currently operated with a voltage of only 20 kV ( medium voltage ).
Valley spans
In the course of the pipeline there are two distinctive crossings of river valleys. these are
- The 1372 m long crossing of the Enz valley near Calmbach between masts 11 ( 48 ° 47 ′ 13 ″ N , 8 ° 35 ′ 0 ″ E ) and 12 ( 48 ° 47 ′ 43 ″ N , 8 ° 34 ′ 10.5 ″ E )
- The 1,444 m long crossing of the Eyach valley near Dennach between masts 15 ( 48 ° 48 ′ 1 ″ N , 8 ° 33 ′ 45 ″ E ) and 16 ( 48 ° 48 ′ 35 ″ N , 8 ° 32 ′ 56 ″ E )
The latter is the longest span of an overhead line in Germany. The anchoring poles at both ends of the respective clamping panel were due to the large span as so-called wide-tension towers designed and executed as a freestanding lattice steel towers. In contrast to Elbe crossing 1 and Elbe crossing 2 , the tensioning masts of the two valley spans could be arranged relatively low, which was made possible by taking advantage of the mountainous topography of the Black Forest . The height of the Eyachtal span, the largest German span, is 70 meters.
Map with all coordinates: