High Voltage (HV) Terminations and Connectors

High Voltage (HV) Terminations and Connectors

In extra-high-voltage (EHV) systems, within voltage ranges of 52kV to 170kV and above, cable accessories are a critical component in ensuring the reliability of the transmission grid. Operating at these voltages requires solutions capable of managing high electrical fields, significant thermal loads, and varying environmental conditions over time. A failure in an EHV termination or joint can lead to line shutdowns, damage to ancillary equipment, and extensive operational and financial consequences.

Netzer A.L. Electrical Engineering specializes in supplying extra-high-voltage cable accessories for substations, transmission facilities, and utility applications. Our scope of activity includes terminations and connectors designed for outdoor environments, GIS substations, and dedicated applications, in full compliance with standard requirements and electric utility/infrastructure specifications.

Our Supply Scope Includes:

  • Dry-Type Terminations Oil-free and gas-free solutions designed for EHV applications, requiring minimal maintenance depending on installation conditions.

  • Plug-in Terminations for GIS Substations Cable connection systems for Gas-Insulated Switchgear (GIS), enabling controlled connection and installation in compact substation environments.

  • Cable Joints and Sleeves (Straight Joints) Solutions for connecting and extending EHV cables, featuring controlled electrical field management and precise matching to the cable type.

  • Ancillary Monitoring Accessories Solutions for temperature and connection status monitoring, tailored to specific project requirements.

Suppliers and Manufacturers

Netzer partners with world-leading international manufacturers specializing in EHV cable accessories, including:

  • Pfisterer HV EHV connection and termination solutions, including dry-type and plug-in connection systems for substations.

  • Nexans / Euromold HV A comprehensive portfolio of EHV cable accessories designed for power transmission and utility applications.

  • NKT HV EHV cable accessories, including underground and submarine applications, engineered for complex technical specifications.

The supply of EHV equipment demands a precise match between the cable accessory, the cable type, and the installation conditions. The Netzer team provides comprehensive support during the characterization and selection phases, working in close coordination with engineers, designers, and contractors to ensure full compliance with site specifications and requirements.