Archived 2016 Lapp Group International Catalog

Appendix Glossary

ÖLFLEX ® ACCESSORIES FLEXIMARK ® SILVYN ® SKINTOP ® EPIC ® HITRONIC ® ETHERLINE ® UNITRONIC ® APPENDIX

Coaxial cable Concentric pair of conductors consisting of an inner conductor and an outer conductor, which completely surrounds the inner conductor. Coaxial cables are suitable for low-attenuation and distortion free transmission of high bandwidth signals. Because of their self-screening construction, they are much less sensitive to external interference (e. g. RG coaxial cable at Lapp). Coaxial cables are used in high fre- quency telecommunications systems (cable TV, Ethernet applications) for transmission of high frequency signals. Colour code For uniform marking of metallic cables and waveguides, various insti- tutions including the EIA, DIN and IEC, have developed a standardised colour coding system. The colour codes for metallic cores assign totally different colours to the insulation of the pairs of cores for the individual standards. In addition to these standards, which are not consistently applied by manufacturers, colour codes specific to the manufacturer are often used. Colour print Sheaths and insulation covers are usually printed with colour, using a metallic disc whose lettering is engraved inversely on its periphery. Using a scraper, the excess colour can be scraped away. Communication Interaction between two independent systems. Used for one-way or two-way exchange of messages in the form of voice, text, images or data. Compensating cable Compensating cables are used together with a thermal element for temperature measurements. (Thermal elements such as Fe/CuNi iron-constantan (blue); NiCr/Ni nickel- chromium-nickel (green); PtRh/ Pt platinum-rhodium-platinum (white). A thermal element consists of two conductors made from different materials, between which there is an electric potential depending on temperature. A compensating cable transmits this potential from the thermal element to a cold junction. There, based on the value of the potential, the temperature can be assigned at the point of measurement. Composite layer, composite sheath The combination of an aluminium foil with the plastic/ polyethylene sheath of a cable. The foil covers the core of the cable lengthways and overlapping, while the plastic part is placed on the outside. The outer sheath extruded onto it forms a homogeneous connection with the foil due to the effect of temperature, resulting in an interconnected “lami- nated” aluminium foil sheath. Used in outdoor telecommunications cables. Compound A material compound of polymer plastics with filler. Polymers are often compounded with colours, processing aids, fibres and other fillers. Concentric conductor The concentric conductor (e. g. NYCWY) may be used as a PE or PEN wire and can also act as the screening. Conditioning Division of production length of cables into storage or delivery lengths. Standard forms include coils with lengths of 50, 100 and 250 m and drums with 250, 500 and 1,000 m, depending on weight.

Conductor Single-conductor cables are single- or multi-wire cables, used mainly for fixed laying with rubber or plastic insulation (ground wire). A non- insulated wire of a material whose high number of free electrons makes it suitable for carrying electric current (particularly copper and alumin- ium). Component allowing a connection that is easy to break and reestablish between two light waveguides. The insertion loss from a connector is normally higher than that from a splice. In signal and power engineering, connectors are used for connecting cables with different numbers of poles and in a variety of different designs. Because of the associated ease of service compared to fixed cable connections, connectors are being used in an increasing number of applications. (e. g. EPIC ® at Lapp). Plugs are components that enable electrical conductors to be connected and are designed to create detachable electrical connections with an appropriate counterpart. Plugs may not be inserted or removed during proper use (under elec- trical voltage). A distinction is made between free and fixed plugs according to the mounting. The plug is made up of the plug housing and the contact elements. (e. g. EPIC ® brand from Contact at Lapp). Central component for star-shaped passive light waveguide networks. It connects numerous transmitters and receivers and distributes the signal light output supplied by a connected transmitter evenly to all connected receivers. Contact voltage Part of an error voltage which may be contacted by members of the general public. Control cable The Lapp ÖLFLEX ® brand is synonymous with connecting and control cables. The key features of control cables are: Bare or tin plated fine copper wire conductors, PVC insulation, stranding of cores with back twist, special PVC compound outer sheath. Different ÖLFLEX ® designs include: a) Different coloured cores, b) Numbered cables. ÖLFLEX ® cables have the following properties: Flexible, largely resistant to all kinds of oils, alkalis and acids. ÖLFLEX ® are used in the following areas: As control cables in machine tool manufacture and general engineering, plant construc- tion, in all kinds of industrial plants, in measurement and control engineering, process engineering, data processing etc. ÖLFLEX ® control cables are highly recommended for these applications due to their excellent flexibility, the good general chemical resistance, the clear core coding and the problem-free compatibility with multi-pole machine connectors. Copolymere Mixture which polymerises from two or three monomers to form a chain. Copper The best material for producing electrical conductors. Excellent con- ductivity of heat and electricity. In addition, copper (Cu) has very good ductility and good strength properties. Copper base The monetary value used to value the copper contained in cables in the price.

Copper weight It expresses the mass of the copper contained in the cables.

Copper-clad aluminium wire This wire is made up of an aluminium core and a copper sheath.

Conductance The electrical conductivity is the inverse of the electrical resistance.

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