Crimp sleeve
Crimp sleeves are connecting means in electrical engineering for connecting stripped conductor ends by pressing a sleeve. They can be used here instead of clamps .
Ferrules are also used by anglers to attach loops to steel leaders.
As a rule, ferrules cannot be removed non-destructively.
Working principle
A ferrule consists of a piece of metal pipe. The conductor ends to be connected are inserted into both openings and the ferrule is then pressed together with crimping pliers . Due to the mechanical deformation of the sleeve, the conductor ends are frictionally held in it. This ensures electrical contact and the connection point is usually isolated from the outside at the same time. Due to the frictional connection, the connection can absorb a certain amount of tensile forces. It should be noted, however, that tensile forces in the electrical installation are not permitted and must therefore be avoided in any case.
To enable a good connection, there are ferrules in several sizes. In order to enable easy, visual differentiation of the sizes, these are color-coded as well as cable lugs:
- Red for cross-sections from 0.5 to 1.5 mm 2
- Blue for cross-sections from 1.5 to 2.5 mm 2
- Yellow for cross-sections from 2.5 to 6 mm 2
literature
- Hans-Günter Boy, Uwe Dunkhase: Electrical installation technology The master's examination . 12th edition, Vogel Buchverlag, Oldenburg and Würzburg, 2007, ISBN 978-3-8343-3079-6
- Günter Springer: Expertise in electrical engineering. 18th edition, Verlag - Europa - Lehrmittel, Wuppertal, 1989, ISBN 3-8085-3018-9