Operating Poles & Earthing Rods | MV HV Substations & Overhead Lines

HV Substation Operating Poles & Earthing Rods
Operating Poles
MV HV | Medium & High Voltage Electrical Safety
11kV 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 (8ft) 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) pole sections due to their ease of transportation and the flexibility they offer when erecting on-site to suit busbar height. The top section of the operating pole should be fitted with an S9D or CEA/S2 Operating Socket.
Thorne & Derrick also offer operating sockets for substation use with HV substation operating poles and earthing rods.
âž¡ 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
Benefits
- Lightweight insulating poles for substation and overhead line applications
- Precision machined for rigidity
- High electrical resistance for medium and high voltage electrical safety
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.
A 2ft (0.6m) special pole is also available for earth tape bridging kits, consisting of upper and lower operating pole sections identified by blue pigmented open weave hand grip.
âž¡ See Overhead Line & Conductors for technical specifications on transmission and distribution power lines working at high/extra high voltages (HV EHV).

A full range of Substation Earthing Equipment available for use with HV Substation Operating Poles & Earthing Rods
Substation Operating Poles | Product Finder
An extensive range of Operating Poles manufactured from lightweight resin-impregnated fibreglass provide highest levels of electrical safety and insulation across standard voltages: 11kV, 33kV 66kV. The operating poles can be inter-connected to achieve extended lengths for both Medium Voltage & High Voltage (MV-HV) overhead line and substation applications. The poles are compliant to ENA Technical Specification TS 41-21 which combines substation and overhead line portable earthing requirements (previously covered by ENA TS 43-81).
Part Number | Pole Assembly Description |
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Size | Compatible With | Weight |
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EAR-18106 | Removable pole end plug. Protects lower joint on-site. | – | – | – | |
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FA1346-E / FA1322-H | 8ft (2.44m) single sections. Bottom sections available with End Plug. | Length: 2.44m | S9D and CEA/S2 Sockets | Weight: 1.40kg | |
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EFR-18104/3 | 8ft (2.44m) pole (2X4ft sections joined by chain). Compatible with other PBwel substation poles. | Length: 2.44m | S9D and CEA/S2 Sockets | Weight: 1.380kg | |
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EBR-18101/4 / AR-18103/1 / EAR-18103/2 | 4ft (1.22m) single sections. Can be used with 4ft and 8ft sections to make the required length. | Length: 1.22 m | S9D and CEA/S2 Sockets | Weight: 0.70kg | |
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EFR-18114 / EFR-18115 | Special 2ft (0.6m) long upper & lower operating pole sections identified by blue pigmented open weave hand grip. | Length: 0.6 m | – | – |

2ft Special Operating Pole | MV HV Electrical Safety
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 Wel substation earthing and transmission line earthing equipment.
We can 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.