Cable System Design for UK Power Projects
Cable sizing, thermal analysis and bonding design, led by a Chartered Engineer. One calculation or a whole cable system. G99 compliance, protection and power system studies delivered to the same standard.
What We Do
Cable system design is where we are quickest and most specialised. G99 connections, protection studies and power system studies run alongside it, and every one of them can be bought on its own.
Cable System Design
Sizing to IEC 60287, cyclic and emergency ratings, short circuit and screen sizing, bonding, pulling, forces, EMF, route drawings and design review.
- • Single calculations, no minimum
- • Expedited turnaround available
- • Review, drawings and site testing
G99 Connections
Complete Type C and Type D packages for projects 10MW to 100MW+ connecting at 11kV to 132kV and above.
- • All G99 required studies
- • SAF & PGMD submission
- • Protection coordination
Protection Studies
Protection coordination, grading and relay settings for grid connections and industrial sites, issued as settings tables the DNO and the commissioning engineer can hold you to.
- • Protection grading
- • Relay settings tables
- • Short circuit analysis
Power System Studies
Individual power system studies available when you need specific analysis rather than a complete package.
- • Short circuit & fault level
- • Protection coordination
- • P28 & G5/5 compliance
Technical Capabilities
Cable system work to the IEC and CIGRE standards, plus the power system studies a UK connection needs. Every input stated, every clause named.
Chartered Engineer Leadership
Our team is led by CEng-registered engineers with deep expertise in UK grid codes. Every project benefits from professional oversight and rigorous technical standards.
UK Grid Specialists
We work exclusively on UK grid connections. This focus means we understand DNO preferences, stay current with code changes, and know what's needed for approval.
End-to-End Support
From initial SAF submission through to ION approval, we coordinate with DNOs and ICPs throughout the connection process—not just isolated studies.
Our Own Calculation Engine
The cable rating calculations run on software we wrote and maintain rather than bought in, which is what makes expedited turnaround possible when a programme demands it. Add GB Grid Data for connection site search.
Featured Projects
Cable system design, grid connection and power systems engineering delivered by Star Delta Power.
Engineering Resources
Access our collection of free power systems calculators and tools.
Induced Sheath Voltage
Screen standing voltage against the 65 V limit, and the longest bonded section.
Open tool →Cable Volt Drop
Volt drop against route length, with the limits plotted and the maximum length.
Open tool →IDMT Protection Curves
Calculate trip times, compare test results, and grade protection curves.
Open tool →Start Your Project
Tell us what you need looked at and we'll come back with a scope and a fee. A single calculation is a job, so ask for exactly what you want.
Prefer to reach out directly?
enquiries@stardeltapower.co.uk
Star Delta Power Ltd · Registered in England No. 11200303 · £5M PI Insurance