A well known problem for every electrician or cable jointer is trying to insert a stranded or fine stranded conductor into the cable lug connector or cable splice and some wires cannot be inserted. To avoid this problem renowned manufacturers offer specialist application connectors and cable lugs for the jointing and termination of LV MV HV cables.
CABLE LUGS, STRANDINGS CONDUCTORS
With these specialist application cable lugs all types of cables can be used – the design and construction of the copper tubular lugs to be selected is determined by the cable stranding and conductor type. The cable conductor characteristics of cable types are as classified in the DIN Standard 57295.
CABLE LUGS FOR FINE VERY FINE STRANDED CONDUCTORS
The above mentioned problem of spliced cables per Class 5 and Class 6 according to DIN 57295 is being avoided when using Klauke “F” type series cable lugs. These lugs are designed for processing larger cross section conductors in voltage applications up to the short circuit tested rating of the cable lug.
Compared with standard tubular cable lugs the F type lugs have a larger tube diameter – the cable lugs have a flared entry which eases cable location into the barrel of the lug. F-type cable lugs and butt connectors conform to the normative requirements of the EN 13600 standard and are manufactured from electrolytic copper for excellent conductivity.
For processing and crimping solid conductors (Class 1 DIN VDE 57295) the use of tubular cable lugs E-type is recommended which are also manufactured from electrolytic tin plated copper. Their tube diameter is matched to the conductor size to guarantee a professional cable crimp.
Especially for adverse environments and for crimping copper conductors stainless steel and nickel tubular cable lugs have been designed. Aluminum lugs are particularly acid and corrosion resistant and are typically used in chemical industries in areas exposed to sea water i.e. the earthing of masts on sailing yachts.
An additional benefit of these cable lugs is the temperature resistance. Consequently these lugs can be used in ambient temperatures up to 400°C.
At higher temperatures of up to 650°C – common in the construction of furnaces – nickel cable lugs represent the best solution. Both stainless steel and nickel cable lugs can be used for all common cable types.
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