5:2 General information about Al and AlCu terminals System Elpress System Elpress consists of terminals and tools that are designed and tested together to give a certified crimping result. This ensures that users will feel confident when using our systems, and that a secure connection is achieved through the proper handling of our products. Al terminals Elpress terminals for Al cable are made of solid and pure aluminium 99.7%. We manufacture Al terminals type AK and AS, but also customised terminals or terminals larger than 1200 mm². Terminal type AK is used with Al conductors for connection to busbars and apparatus sockets. Indent crimping of Elpress through connector using crimp head V250. AlCu terminals Elpress bimetallic terminals (AlCu) are manufactured from solid material which is friction welded together, joining Aluminium with Copper. This is done when aluminium is rotated towards copper under pressure and it is the method that provides the best connection between Al and Cu. Terminals of type AKK are used at the end of an Al conductor for connection to a Cu bus bar. Through connectors of type AKS are used to connect Al conductors to Cu conductors. Pin sockets type AKP are manufactured for connection of Al conductors to apparatus intended for copper pin connections. Number of crimps The Elpress system is suitable for both stranded conductors, acc. to IEC 60228 class 2, and solid conductors, acc. to IEC60228 class 1. However, it should be noted that there is an area difference between stranded and solid Al conductors (see tables). When using sectoral Al-cable, a pre-rounding is normally required, which is done with a round crimping tool. When contact crimping Al terminals, two crimps should always be made. Note the crimp sequence. Customised products Customised products are an important part of our work. Solving problems for the customer and at the same time manufacturing the products with profitability is a special challenge. This way, we also increase our knowledge of the customers’ needs. The above terminals include different models of T-connectors where you can connect three conductors of the same size using only one terminal. Upon request for variants in hole arrangement, the size of the connection flag and the like, we make variants of cable clips. Marking Al and AlCu terminals Elpress system for marking Al and AlCu terminals states the conductor area (for small and solid conductors) and reference to rounded and contact crimp tools within the Elpress range. A tool reference for hexagonal crimping copper is given on the bimetallic through connectors. TERMINALS: Explanatory marking Al and AlCu terminals Barrel marking i.e. ALU300-R21-P36 (Elpress logotype) T2 ALU300 = Al conductor in mm² R21 = size no. for punch and matrix for pre-rounding P36 = size no. for punch and matrix for crimping Palm marking: (Elpress logo) 16 = Screw dimension THROUGH CONNECTORS: Explanatory marking Al and AlCu terminals For example: Cu240 - 30 (Elpress logotype) Cu240 = Cu conductor in mm² 30 = Size no. for hexagonal die For example: ALU300-R21-P36 (Elpress logotype) T2 ALU300 = Al conductor in mm² R21 = size no. for punch and matrix for pre-rounding P36 = size no. for punch and matrix for crimping Clearance for holes in terminal palm Screw size Hole diameter (Ø mm) M3 3,2 M4 4,3 M5 5,3 M6 6,4 M8 8,4 M10 10.5 M12 13 M16 17 M20 21 M24 26 Through connectors type AS are used when connecting aluminium-conductors.
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