Three Pole Earthing & Short-circuiting Kits for High Voltage Power Systems | 20kA/s & 30kA/s
Earthing & Short-circuiting Kits
HV Power Systems
20kA/s & 30kA/s Earthing Kits | Portable & Temporary Earth Kits
3 Pole Earthing & Short-Circuiting kits manufactured by Pfisterer and customised for Thorne & Derrick are provide safe working operations in Medium & High Voltage Electrical Substations – this includes SAP’s carrying out O&M on switchgear, busbars, capacitor units, overhead lines and installations with fixed permanent points.
These portable earthing kits ensure electrical safety, dependability and quality that are in accordance with IEC 61230 standards.
âž¡ Thorne & Derrick are suppliers and distributors a complete range of Portable Earthing Kits enabling us to offer portable earth leads from stock.
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Earth Connection Variant |
Conductor Screw Clamps |
THREE POLE EARTH AND SHORT CIRCUIT KITs
SHORT CIRCUIT & PORTABLE EARTHING KITS | MEDIUM VOLTAGE MV
20kA/s Short Circuit Earth KitÂ
- Part Number – TD-ESCK-20
- Length of Earth Cable – 2,5 m
- Format – PVC Transparent/Clear
- Short Circuit Cable Length – 1.5 m
- Cross Section Short Circuit Cable – 95mm² – 18.7kA/s/20kA/s
- Cross Section Earth Cable – 35mm²
- Earth Connection Variant – U3; d 2-20; K20; T15
- Conductor Screw Clamps – Pfisterer P5D; d 2-25; K25/30; T20
- Weight – 9.4kg
30kA/s Short Circuit Earth KitÂ
- Part Number – TD-ESCK-30
- Length of Earth Cable – 2.5 m
- Short Circuit Cable Length – 1.5m
- Format – PVC Transparent/Clear
- Cross Section Short Circuit Cable – 150mm² – 29.6kA/s/30kA/s
- Cross Section Earth Cable – 50mm²
- Earth Connection Variant – P5D; d 2-25; K25/30; T20
- Conductor Screw Clamps – Pfisterer U5; Ø 2-25; KØ25/30;TØ20
- Weight – 12.2kg

Portable Earth Leads
IEC 61230 Live Working – Portable Equipment for Earthing & Short-Circuiting
IEC 61230 is applicable to portable equipment, with or without matching connection points, used for temporary earthing rods, or earthing and short-circuiting of electrically isolated or de-energized alternating current and direct current installations, distribution and transmission networks, whether overhead or underground, low or high voltage.
Pfisterer Connex Connectors
Thorne & Derrick provide competitive prices for the CONNEX range of 33kV Inner Cone connectors from stock for the termination of medium voltage cables into gas insulated switchgear. From stock we hold the complete range of Size 3 Inner Cone Plugs (95-630sqmm), Dummy Plugs, Blind Caps, Test Leads & Installation Tools.
Pfisterer Medium Voltage Cable Preparation & Jointing Kits
Thorne & Derrick working alongside PFISTERER are delighted to announce the launch a new high quality and precision engineered Medium Voltage Cable Preparation Tool Kit for Jointers working on cables up to 33kV with primary insulation diameters at a maximum measurement of 60mm.
The following table outlines the Tools included in the Pfisterer MV Jointers Tool Kit stocked and supplied by Thorne & Derrick;
Supplier | Part No | Jointers Tool Description | |
1 | Pfisterer | N/A | Folding 2m Ruler |
2 | Pfisterer | N/A | Round File |
3 | Pfisterer | N/A | MV Knife |
4 | Pfisterer | N/A | Long Nosed Pliers |
5 | Ripley | US10-7000 | Insulation Chamfer Tool |
6 | Alroc | PG4HTA/3033 | Sheath Removal Tool (Pliers Type) |
7 | Ripley | KS-1 | Scissors |
8 | Ripley | US02 | Fully Bonded Semi-conductive Screen Removal |
9 | Pfisterer | N/a | Garrotte |
10 | Alroc | LH2 | Insulation Removal Tool |
11 | Ripley | US15 PRO | Easy Peel Semi conductive Layer/Sheath Removal |