Network Rail Case Study New Overhead Line Equipment
December 8, 2020
Network Rail Case Study: The successful trial of the new
Light and flexible. Available in any lengths on request. Thoroughly tested and approved to ENA 41-21.
PBwel can supply Aluflex Leads in any required length, in a wide range of sizes including specifically for Substation use 150sqmm & 50sqmm according to ENA specification 41-21. The flexible aluminium Earth lead comes with tested and approved compression terminations and stress support springs/sleeves.
PBwel Aluflex Leads are used for connecting between a Line End clamp and an Earth End clamp. For use in Substations, Portable Primary Earths always employ 150 sq.mm Aluflex cables with a transparent pvc sheath. Field Equipment Earths are utilising 50 sq.mm, Arctic orange Aluflex leads, 50 sq.mm exact leads are used for the control of induced voltages.
Leads are also available in blue and green, solid, opaque or semi-transparent coloured pvc sheaths for special applications on request.
Portable Primary Earth leads following the ENA Technical Specification 41-21, 150 sq.mm Aluflex with clear pvc sheathing. They are fitted with PB150T terminations and stress relieving springs to reduce flexing, which would otherwise create work hardening of the cable between the terminations and the cable junction.
The Aluflex Leads are carefully manufactured and tested rigorously throughout the manufacturing process to ensure quality and performance. Terminations are made from specially milled and certified material, and precision machined.
Leads for Field Earths generally use two types of terminations. One end is PB150T which is suitable for the CE20 Clamp to connect to the Substation Earth Tape, whereas the other is a standard PB50 Palm Termination with a 13.5mm hole. Where a CE20 Earth End clamp is not fitted one end a lead having two PB50 palm terminations may be used.
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Network Rail Case Study: The successful trial of the new
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