12:10 General comments on the use of Elpress terminals for voltages of 12 kV and above Terminals The modern and easy-to-use cable terminations for 12 to 36 kV PEX insulated cable consisting of prefabricated modules or even fully finished terminations, provide no or very little restriction in the use of terminals with type designations AK, AKK or KRF. This also includes the ”top pins” with the type designation AKP. One detail to take into account when using KRF terminals outdoors is that this terminal is equipped with an inspection hole that must be sealed. Your supplier of cable terminations can provide its specific solution. Terminals type AK, AKK or ”top pin” AKP can today be used on high voltage cable terminations where solutions are available up to 84 kV. In case of doubt, always consult with your cable termination supplier for specific solutions for different issues regarding technical details regarding the design. When installing cable terminations for oil impregnated paper cable where an oil reservoir is used, manufacturers usually have their own specially designed solutions for the conductor connections. Terminals type AK Terminal type AK is used at termination of an Al conductor for connection to busbars and apparatus sockets Terminals type AKK Terminals of type AKK are used at the end of an Al conductor for connection to a Cu bus bar. Through connectors type AS Through connectors type AS used when splicing aluminium-conductors. Through connectors type AKS Through connectors of type AKS are used for jointing of Al conductors to Cu conductors. Joint sleeves PEX insulated cable against PEX insulated cable In Sweden, four types of splice are currently used in the voltage range 12 to 36 kV. These are tape, heat shrink, cold shrink and push-on joints. All these joints are designed to accept AS, AKS and KSF through connectors. No connectors with conical ends are required today. Different manufacturers have their own solutions that are designed to take care of, for example, the punch holes and the distance between the insulation edge and the through connector. Always note the joint manufacturer’s directions regarding maximum lengths and diameters of the connectors. If you are not sure, or if the installation instructions do not indicate what you are considering, consult your joint supplier. At higher voltages, e.g. 52 and 84 kV, other requirements are placed on the through connectors depending on the joint design and design. However, there are solutions where ”normal” through connectors are used together with filler materials in the voltage range up to 145 kV. PEX insulated cable against oil impregnated cable When installing a transition splice between cables with oil impregnated insulation and PEX insulation at voltages of 12 kV and above, connectors with partitions must be used, regardless of the splicing method and make. AKS, KSF-M and AS connectors always have partitions. Oil impregnated against oil-impregnated cable When splicing two cables with this type of insulation, connectors of type AS, AKS, or KSF can be used, whether it is an oil tube connector or a ”dry” heat shrink connector.
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