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CADWELD® High Voltage Cable Conductor Connections

CADWELD® High Voltage Cable Conductor ConnectionsPrint this page

ERICO has provided the CADWELD® range of exothermic welding solutions to numerous cable manufacturers and installers around the world over many decades.

Features

  • Permanent molecular bond that does not loosen or deteriorate, providing a continual optimal electrical path
  • Connections on large cross-section aluminum cables are more cost-effective and result in better electrical joints than other methods
  • CADWELD range uses a specially developed aluminum alloy that makes it perfect for high voltage use
  • Tested and certified as meeting the requirements of IEC1238 by such companies as Electricity de France
  • Also available for copper-copper connections

Applications

  • For both aluminum HV cables and large cross-section copper cables
  • Can be used for underground high-voltage cables not under tensile load

More Information

The CADWELD process is a method of making welded electrical connections in which no outside source of heat or power is required. For aluminum cable connections, powdered metals (tin oxide and aluminum) are dumped into a lid crucible section of a graphite mold and ignited by using a flint ignitor. The exothermic reaction that takes place is the reduction of tin oxide by aluminum. This reaction produces a superheated mixture of aluminum and tin that flows onto the conductors and causes them to be melted and then fused into a solid homogenous mass.  After re-insulating the cable, the resulting connection will have a current-carrying capacity equal to or greater than the conductors being joined and the connection will not loosen, corrode or increase in resistance.

Due to a policy of continued product development, specifications are subject to change without notice.
CADDY, CADWELD, CRITEC, ERICO, ERIFLEX, ERITECH, and LENTON are registered trademarks of ERICO International Corporation.