Services / Power & Energy

MV/HV Power Engineering

Medium and high voltage systems demand precise design, protection and grid coordination. NOVTRIQ delivers MV and HV power engineering for 11kV and 33kV networks, covering substation design, protection coordination and grid connection, so that new and upgraded connections are safe, compliant and reliable.

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What we deliver

  • Substation Design (11kV / 33kV): primary and secondary layouts, switchgear and transformer specification, and single-line diagrams
  • Protection Coordination Study: relay grading, fault-level analysis and discrimination across the MV/HV network
  • Grid Connection Application Support: G99 compliance, DNO or network operator applications and capacity assessment
  • Earthing and Bonding Design: earthing study, step and touch potential assessment and bonding strategy
  • Power System Studies: load flow, short-circuit and arc flash assessment to inform ratings and safety
  • Cable and Equipment Rating: HV cable sizing, ratings and specification against thermal and fault-withstand limits

Who it is for

  • Industrial and commercial sites requiring new or upgraded MV/HV connections
  • Developers and operators of data centres, manufacturing plants and energy assets
  • Asset owners needing protection coordination and grid connection support

Standards & regulations

IEC 61936-1ENA G99ENA G5/5 (harmonics)BS 7671:2018+A2:2022IEC 60909 (short-circuit)BS EN 62271 (HV switchgear)Electricity at Work Regulations 1989Distribution Code

Substation design and equipment specification

We design MV and HV substations from concept single-line through to equipment schedules, specifying switchgear, transformers and protection to IEC 61936 and relevant BS EN standards. Ratings are set from fault-level and load studies so that plant is neither under-rated for safety nor over-specified for cost.

Protection coordination and system studies

Protection is graded to isolate faults quickly while preserving supply to healthy circuits. Load flow, short-circuit and arc flash studies underpin relay settings, discrimination and equipment ratings, giving a coherent, safe and selective protection scheme across the network.

Grid connection and compliance

For new and upgraded connections, we manage the technical path: G99 compliance, network operator applications, capacity studies and coordination with the DNO or transmission operator, so that connection is delivered on a defensible, compliant basis.

Ready to design and connect MV/HV power that stays safe and selective?

NOVTRIQ delivers substation design, protection coordination and grid connection engineering for reliable medium and high voltage networks.

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