Langley Court

Client’s Challenge

• The Langley Court works consisted of 11 kV Substation Installation and HV Contestable Cable Route.

• H&MV were appointed by the client to carry out the engineering, procurement, construction and commissioning of all electrical works to meet the Client’s / UKPN’s (DNO) / ESP (IDNO) specifications


London, UK


11 kV


Start Date

December 2016


Completion Date

April 2017

H&MV Solution

• Design of DNO substation, contestable HV cable route, earthing, civil, electrical and carry out the associated studies.

• Utility liaison and management.

• Safety co-coordinator for substation compound.

• Procurement of electrical balance of plant.

• Installation and commissioning.

• Project reporting, commissioning plans and status

Project Scope

• Installation of 120m 300mm2 HV Triplex cable.

• Substation base construction.

• 1 No. Lucy Sabre VRN2A TM with TLF protection RMU install and commissioning.

• No. EFACEC 1MVA Transformer ECO loss install and commissioning.

• Brick built substation building.

• Power and lighting.

• Project Management and Commissioning of electrical installation.

• Produce a complete set of electrical as built drawings and a safety handover file.

• Responsible for issuing the Integrated Test Plans (ITPs), Construction Management Plans, Quality Plans, Safety Management Plan and Temporary Works Register

• Daily toolbox talks, weekly progress and safety meetings, issue and risk management along with regular status reporting

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