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154 months ago

Andrew Graham (a guest user) asked this question:

Language pair:

German > English

Subject:

Technical / Engineering

Level of diffculty:

Easy / medium

Word or term in question:

zwangsweise Führung

Context:

laying rubber insulated cables

Keywords:

Mindestbiegerradius

 

 

The answer of Robert Tucker  See profile was rated best

fixed

My comment:

5.2 Bending radii

The product standard DIN VDE 0298 Part 3 specifies the permitted bending radii
for electrical cables, related to the average cable diameter.

Permitted bending radii:

For multiwire cables with plastic insulation: 4 x Ø

For flexible, freely movable conductors:
Ø = 8 to 12 mm: 4 x Ø
Ø = 12 to 20 mm: 5 x Ø

For flexible, fixed cables:
Ø = 8 to 12 mm: 3 x Ø
Ø = 12 to 20 mm: 4 x Ø

If the bending radii are not maintained during cable laying, this can cause the material to stretch and compress, leading to changes in the mechanical structure of the cable, with the consequence that the electrical properties will be impaired.

http://www.obo-bettermann.com/downloads/en/merkblaetter/Kabel%20und%20Leitungen%20in%20Starkstromanlagen_en.pdf