33/11kV Transformer Replacement Project - Halesfield Substation,Shropshire

Western Power Distribution (WPD) has decided to change the existing 3 x 33/11Kv transformers as the existing ones have reached the end of their design life.

Wootton & Wootton were contracted to provide a turnkey package for the excavation & reinstatement, installation of 11kV cables and associated jointing and terminating.

Scope of Works.

• To excavate joint holes & track as necessary
• To pull out the existing cables and clean the existing ducts with brush, foam pig & jetting where required
• To install new cables between the joint hole and transformer and transformer to NER (7 x 11Kv 630mm XLPE CWS cables per transformer)
• To install cable management at each transformer position
• To supply & install 40T of washed pebbles within transformer bunds
• To reinstate all excavations to match the existing
• To install 7 x sets of 3 11Kv 630mm Euromold terminations
• To install 1 x sets of 3 11Kv 630mm Outdoor terminations
• To install 6 x sets of 3 11Kv transitional straight joints
• To drill transformer gland plates
• To carry out all necessary cable spiking

Summary

The works were successfully completed on time & budget ahead of schedule on all 3 outages.