Operating Poles & Earthing Rods | MV HV Substations

HV Substation Operating Poles & Earthing Rods

HV Substation Operating Poles & Earthing Rods

Operating Poles

33kV & 66kV up to 400kV | According to ENA Technical Specification 41 – 21

Pbwel operating poles and earthing rods, are manufactured from a lightweight resin-impregnated fiberglass of a high electrical insulation grade. The poles are machined to provide rigid assembly and include a double snap action spring locking device and are approved to the ENA technical specification 41/21.

HV substation operating poles are available as 2.44m (4ft) top and bottom single sections or two 1.22m (4ft) sections permanently linked to avoid a 1.22m (4ft) length of pole being fitted with an operating socket and form part of the Pbwel substation earthing equipment range.

Most commonly used are 4’ (1.22m) sections due to their ease of transportation and the flexibility they offer when erecting on-site to suit busbar height. The top section should be fitted with an S9D or CEA/S2 Operating Socket.

T&D also offer operating sockets for substation use with HV substation operating poles and earthing rods.

➡ ENA Technical Specification 41-24 | Portable Earthing Equipment for Open Type HV Apparatus in Substations | Guidelines for the design, installation, testing and maintenance of main earthing systems in substations.

HV Substation Operating Poles & Earthing Rods


  • Lightweight clamps
  • Precision machined for rigidity
  • High electrical resistance

The range of operating poles for medium/high voltage substation earthing include single 8ft (2.44m) sections and single 4ft (1.22m) section poles – these can be interconnected to form the required length on site comprising bottom (with a handgrip), intermediate and top sections. Our operating poles are manufactured from lightweight resin-impregnated fibreglass of a high electrical Insulation grade and employ precision joints to reduce deflection and improve handling on site.

➡ See Overhead Line & Conductors for technical specifications on transmission and distribution power lines working at high/extra high voltages (HV EHV).

HV Substation Operating Poles Earthing Rods

A full range of Substation Earthing Equipment available for use with HV Substation Operating Poles & Earthing Rods

Portable Earthing Equipment & Tools for HV EHV Substation & Overhead line Applications

Thorne & Derrick provide competitive prices and fast delivery from stock for the complete range of PB Weir substation earthing and transmission line earthing equipment.

In 2018 In 2018 PB Weir joined the Novarc group and re-branded as PBwel and now, through the ESP group of companies, we are able to supply, support and maintain a comprehensive range of Electrical Safety Equipment which includes: Earthing, Insulated Tools, Arc Flash Protection, Personal Voltage Detection Helmets, Insulating Gloves, Voltage Detection, Operating Poles & Lock-Out Tag-out.

Thorne & Derrick also distribute the Alroc and Ripley range of Utility Tools for stripping, cutting and preparing high voltage transmission and distribution cables prior to jointing, splicing and stringing – see also the Cembre range for battery and hydraulic cutting tools.

Data Sheets