3:2 General information about uninsulated 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 will be achieved through the proper handling of our products. Uninsulated terminals Elpress through connectors, ring, pipe, fork and pin terminals are made of high-quality copper 99.95%. The receptacles and sockets are made of brass. All terminals are then electro-tin plated for maximum corrosion protection. Terminals made of copper bands have a brazed neck which is soldered, which means that it can be crimped in any direction. Examples of crimps using Elpress uninsulated terminals. Marking of uninsulated terminals Elpress uninsulated terminals are marked with logotype, area and any screw diameter to facilitate work and checkability. Designation example Cat no B1532R (G, HO, FLS etc) B = uninsulated 15 = Area (1.5 mm²) 32 = Characteristic dimension (Hole 3.2 mm) G = fork terminals GS = fork terminal H = tabs (male) HN = tab with locking lip HA = bullet HO = socket R = ring terminals SR = pin terminal FLS = receptacle, rolled type FLSB = receptacle 90 rolled type FLSH = receptacle w male rolled type FLSN = receptacle w locking lip rolled model FLSV = receptacle angled rolled model Screw and washer The following apply for bright galvanized type nuts and screws, with strength class 8.8, used for connecting terminals with Cu and Al palms: • Always use a torque wrench to be certain the right torque is achieved. Make sure it is calibrated at regular intervals according to the supplier’s instructions. • Use the recommended torque according to the screw manufacturer’s instructions. • Always use a hard flat washer to reduce friction against the connection surface and the edge pressure, hardness min HB200. • Install as illustrated. IEC recommendations IEC - The International Electrical Commission - publishes internationally viable standards which, although not directly binding, often have great impact and are used as the basis for international deliveries. A technical report, IEC 61238-2, sets out the following recommendations regarding screw sizes for connecting terminals with Cu and Al plate provided that mounting takes place with a washer and with the correct tightening torque. Conductor area, mm² Screw 10 M6 16-50 M8 70-95 M10 120-300 M12 400-500 M16 UL-approved terminals KR/KS, KRF/KSF, KRFS, KRT/KST UL approved in accordance with file no. E205350. UL certified products are delivered with UL marking on the label including the UL file number and/or certification code for control by an UL inspector. The certificate can be downloaded at UL Product IQ.
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