Substation Design Services

11kV / 33kV / 66kV Substation Design Consultancy

Electrical substations are the critical entry point connecting utility power grids to industrial facilities. Designing a high-voltage (11kV, 33kV, or 66kV) indoor or outdoor substation requires specialized expertise in power transformer selection, vacuum circuit breaker (VCB) switchgear layouts, protective relaying, earthing grid design, and civil coordination. At iPower Switchgear, we deliver end-to-end Substation Design Consultancy Services across Gujarat and India.

Our substation design engineers create fully integrated engineering packages compliant with CEA Construction Standards, DISCOM technical specifications (UGVCL, DGVCL, MGVCL, PGVCL, Torrent Power), and IS/IEC guidelines.

Comprehensive Substation Design Capabilities

• Primary High Voltage Layout Design: Yard equipment arrangement, bay layouts, busbar clearances (phase-to-phase and phase-to-earth), gantries, and lightning mast coverage for outdoor substations.
• Indoor HT Switchgear Room Engineering: Cable trench details, VCB panel arrangement, transformer room ventilation, fire separation walls, and oil soak pit design.
• Protection & Control Scheme Engineering: CT/PT sizing, primary relay selection, AC/DC auxiliary supply sizing (battery charger & DCDB), and alarm annunciation schemes.
• Substation Earthing Grid Sizing (IEEE 80 / IS 3043): Touch and step potential calculations, earthing mat conductor sizing, and earth pit placement.

Related Substation Capabilities

Advanced Engineering Standards & Operational Quality

At iPower Switchgear, all Electrical Service projects are executed in strict accordance with ISO 9001:2015 quality management procedures, Central Electricity Authority (CEA) safety guidelines, and applicable Indian & International standards (IS / IEC / IEEE). Our experienced team conducts on-site field audits, digital twin simulation modeling, and rigorous pre-commissioning checks to eliminate operational vulnerabilities.

Whether you are establishing a new industrial facility, upgrading existing sub-station infrastructure, or requiring emergency engineering support in Gujarat, our certified engineers deliver comprehensive technical documentation, stamped test certificates, and actionable recommendations to optimize long-term asset performance.

High Voltage Substation Engineering & Statutory Standards

Our 11kV/33kV/66kV substation designs adhere strictly to CEA Regulations, GETCO/DISCOM guidelines, and IS 2026 standards:

• Outdoor Switchyard & Indoor HT Room Layouts: Equipment spacing, busbar clearances, gantry structures, and VCB switchgear panel placement plans.
• Protection & Control Scheme Engineering: CT/PT sizing, numerical relay selection, AC/DC auxiliary supply sizing (battery charger & DCDB), and trip schemes.
• Substation Earthing Grid Sizing (IEEE 80 / IS 3043): Touch and step potential calculations, earthing mat conductor sizing, and earth pit arrangement.
• Civil Structural Coordination: Structural loading data for equipment foundations, transformer soak pits, cable trenches, and fire barrier walls.

Substation Auxiliary Power & DC Battery Bank Sizing

We design station auxiliary transformers (SAT) and 110V DC battery charger systems (LiFePO₄ or VRLA) to supply uninterrupted trip-coil power and emergency control room illumination during station blackouts.

Substation DC Auxiliary Power & Station Battery Bank Sizing

We design 110V DC auxiliary power systems featuring sealed VRLA or LiFePO₄ battery banks and dual-redundant battery chargers. This guarantees uninterrupted DC control power for numerical protection relays, trip coils, and emergency switchyard lighting during total station blackout conditions.

Substation Structural Earthing & Lightning Protection

We model substation lightning protection networks using the rolling sphere method per IEC 62305 standards, sizing air terminals and down conductors to protect high-voltage switchyards from direct atmospheric lightning strikes. All structural steel gantries are solidly grounded to the primary earth grid.

We prepare comprehensive substation civil and structural foundation drawings, oil soak pit drainage plans, and fire wall barrier specifications in compliance with NBC 2016 and local DISCOM safety standards.

Our engineering package includes transformer sizing calculations, short-circuit withstand analysis, and earthing grid designs to guarantee complete operational reliability and personnel safety.