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Electrical Infrastructure Engineering

PRIMARY PLANT DESIGN — 33KV TO 765KV

Expert engineering design for HV/EHV primary plant equipment including transformers, switchgear, busbars and associated HV apparatus for utilities and industries.

Designs Completed

200+

Max Voltage

765kV

Countries Active

10+

Get Expert Consultation

Our specialists respond within 24 hours with a detailed technical assessment.

Services Required

Full Scope

WHAT'S INCLUDED IN OUR PRIMARY PLANT SCOPE

Single-Line Diagram Development

Preparation of SLDs for all voltage levels, defining equipment configuration, bus arrangement and protection philosophy.

Busbar & Layout Design

AIS and GIS busbar arrangement design, phase clearance calculations and equipment layout for optimal site footprint.

Insulation Coordination

Overvoltage study, BIL/SIL selection, surge arrester specification and insulation coordination reports per IEC 60071.

Equipment Sizing & Selection

Rating calculations for transformers, circuit breakers, disconnectors, earthing switches, CTs, VTs and surge arresters.

Earthing System Design

Touch and step voltage analysis, earth grid design to IEEE 80 / IS 3043, earth mat conductor sizing and layout drawings.

Detailed Engineering Drawings

GA drawings, foundation loading schedules, equipment arrangement plans and as-built documentation for all primary plant.

NOT SURE WHICH DESIGN STANDARD FITS YOUR PROJECT?

Talk to our engineering team and receive a detailed design scoping report within 48 hours.

Our Process

FROM CONCEPT TO DETAILED DESIGN

01

CONCEPTUAL DESIGN

Review of client specifications, grid code requirements and site constraints. Develop concept SLD and equipment list for client approval within 2 weeks of award.

02

PRELIMINARY ENGINEERING

Prepare preliminary equipment datasheets, layout drawings and load flow analysis. Submit for client and utility review, incorporating comments before progressing.

03

DETAILED ENGINEERING

Produce IFC drawings including SLDs, GA layouts, earthing designs, cable schedules and equipment specifications to applicable standards.

04

VENDOR DOCUMENT REVIEW

Review supplier drawings and technical submittals for transformers, switchgear and protection equipment ensuring compliance with project specifications.

05

AS-BUILT & DOCUMENTATION

Compile final as-built drawings, design calculations, test reports and O&M manuals for handover to client and utility authority.

Capabilities

Technical Specifications

Voltage Range
33kV, 66kV, 110kV, 132kV, 220kV, 400kV, 765kV
Technology Types
AIS, GIS, Hybrid — indoor and outdoor configurations
Transformer Capacity
Up to 500 MVA, auto-transformers, generator step-up transformers
Protection Systems
Single, double, one-and-a-half and ring busbars
Earthing Standards
CEA, IS, IEC 60076, IEC 62271, IEEE C57, BS 7354
Standards Followed
ETAP, PowerFactory, AutoCAD, MicroStation, Revit
Documentation
SLDs, GA drawings, earthing designs, BOQ, calculation packages

Electrical Engineering Consultant in UK

FREQUENTLY ASKED QUESTIONS

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