HV & EHV Cable Design (UK)
Independent HV & EHV cable design services across the UK: route engineering, cable pulling calculations, earthing & bonding, thermal ratings (IEC 60287), and substation interface design.
HV & EHV Cable Design Services (UK)
We deliver pragmatic, calculation‑led cable design for HV and EHV underground systems across the UK—covering route engineering, pulling calculations, earthing & bonding, thermal ratings, and substation interfaces. Our approach is built on UK utility practice and international standards, and it integrates cleanly with construction and commissioning.
Built for UK practice
Our designs reflect UK undergrounding realities—direct‑buried vs ducted solutions, tunnel installs, joint bay spacing, EMF considerations, and land‑use constraints—so what you tender is buildable and compliant with stakeholder expectations.
Who we support
Utilities, TO/DNO frameworks, and contestable delivery partners
Renewables (onshore wind/solar/BESS) and interconnection projects
Rail and large infrastructure requiring diversions/upgrades
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Phone: 07779 799109
Why choose Cable Engineering?
UK‑focused delivery: Designs and documentation aligned to UK DNO/TO practices and real‑world consenting.
Independent & calculation‑driven: Clear reports, method statements, and drawings that contractors can build from.
Interface awareness: Our cable scope joins up with substation layouts, earthing, protection, and SCADA.
FAQs
Do you cover both HV and EHV?
Yes—our core scope spans HV (11–132 kV) and EHV (220–400 kV) underground cable systems, including station interfaces and installation engineering.
What standards do you design to?
IEC 60287 (ratings), IEEE 80 / IEC 60479 (safety), BS EN and client‑specific standards. We document assumptions so contractors can build with confidence.
Do you provide installation support?
We prepare method statements, inspection/test plans (ITPs), and offer on‑site engineering support for critical pulls, terminations, and pre‑commissioning.
What we deliver
Route engineering
Feasibility and detailed routing for ducts, trenches, tunnels, joint bays, and sealing ends—including constraints mapping, Areas of Engineering Difficulty (AEDs), traffic management, and constructability notes.
Cable pulling calculations
Winch/drum sizing, friction factors, bend radius checks, sidewall pressure, static/dynamic tension limits, and pulling method statements—built from your route geometry and cable data.
See our Cable Pulling Calculation Services.
Earthing & bonding
Earth grid design, EPR analysis, touch/step compliance (IEEE 80 / IEC 60479), and screen bonding strategies (solid, single‑point, sectionalised cross‑bonding) to reduce losses and manage sheath voltages.
Explore Earthing Design.
Thermal ratings & ampacity
IEC 60287‑based current ratings and installation‑specific thermal modelling (soil/backfill, ducts, group effects) with clear assumptions, sensitivity checks, and construction implications.
Substation interface & protection
Primary/secondary layout coordination (AIS/GIS), cable terminations, arrangement drawings, and protection/SCADA integration notes to ensure a clean hand‑off to the station scope.
See Substation Design.
Design checks & derogations
Independent checks, risk registers, and derogation support where site conditions require variations from client standards—documented for planning and procurement.