Experts in Substation

Protection & Control System Design

CAD Works

We provide Protection & Control CAD services delivering precise, standards-compliant drawings for substation and industrial power systems. Our scope includes single line diagrams, protection schematics, wiring diagrams, panel layouts, and interlocking logic. Each deliverable is developed with clear signal flow, accurate CT/VT interfaces, and well-defined terminal arrangements. We ensure strict revision control and alignment with utility, IEC, and project-specific requirements. Our CAD services support efficient installation, minimise site issues, and enable smooth testing and commissioning.

Drawings review

We provide drawings review services to ensure accuracy, compliance, and constructability of Protection & Control documentation. Our reviews cover single line diagrams, protection schematics, wiring diagrams, panel layouts, and cable schedules. We verify relay logic, CT/VT connections, interlocking, and signal integrity against project standards and specifications. Detailed comments are issued to resolve discrepancies, reduce site risks, and avoid rework. This service ensures approved drawings are reliable, consistent, and ready for construction and commissioning.

Asbuilts Preparation

We provide as-built preparation services to accurately reflect final site installations and commissioning changes in Protection & Control documentation. Our scope includes updating single line diagrams, protection schematics, wiring diagrams, panel layouts, and cable schedules based on red-line markups. We ensure all field modifications, relay settings references, and terminal changes are correctly captured. Strict revision control and document traceability are maintained throughout the process. The resulting as-built drawings form a reliable record for operation, maintenance, and future upgrades.

Outsourcing

We provide outsourcing services for Protection & Control engineering to support clients with flexible, cost-effective technical resources. Our team delivers CAD drafting, drawings review, as-built preparation, and detailed secondary design activities aligned with project standards. We work as an extension of your in-house team, ensuring quality, consistency, and timely delivery. This approach helps reduce workload pressure, optimise costs, and meet demanding project schedules without compromising engineering integrity.

Interface Engineering

We provide comprehensive interface engineering services for integrating protection systems with GIS and AIS switchgear equipment. Our scope includes detailed interface wiring design, signal mapping between protection relays and switchgear, interlocking logic, and I/O coordination to ensure safe and reliable operation. We develop clear interface diagrams, wiring schedules, and terminal plans that align with OEM requirements and utility standards, supporting seamless design, installation, and commissioning of substation protection systems.