Technical Specification & Design Review
Since transformer performance is determined at the design stage, EWP acts as an independent engineering partner, supporting the definition of technical specifications and the verification of transformer design across tender, procurement, and execution phases.
The objective is to ensure compliance with technical, operational, and regulatory requirements, while validating the design against real operating conditions supporting manufacturers, utilities, and end-users throughout the project lifecycle.
Our service provides a structured and in-depth design review, aligned with IEC standards and extended with advanced simulation and field-based validation, minimizing the risk of design or manufacturing defects.
Scope of Support:
- New transformer design validation
- Review of transformer technical specifications
- Tender and procurement support
- Design optimization analysis (cost - performance - reliability)
- Compliance with international standards (IEC, IEEE)
Technical Assessment
EWP combines document review, engineering validation, and numerical simulation to assess all critical aspects of transformer design.
- Technical Specification Review: Analysis of client requirements, operating conditions, and project constraints to ensure clarity, completeness, and feasibility;
- Electrical Design Assessment: Evaluation of insulation coordination and dielectric design, voltage distribution (steady-state and transient), losses and efficiency, short-circuit withstand capability;
- Electromagnetic & Thermal Analysis: Independent validation enabling detection of critical issues (not visible with standard analytical methods) through numerical simulations such as:
- 2D FEM electromagnetic-thermal coupled studies
- Losses and hotspot evaluation in windings
- Current distribution, skin and proximity effects
- Harmonic content impact
- Short-circuit electrodynamic stresses under multiple scenarios
- 3D FEM electromagnetic-thermal transient studies
- Time-domain simulations using real current waveforms
- Analysis of tank, LV busbars, and structural metallic parts
- Stray and eddy losses distribution
- Local hotspot identification and leakage flux paths
- Thermal and Mechanical Verification: Assessment of cooling system performance and temperature rise together with mechanical strength and structural integrity under fault conditions, including verification of consistency between analytical calculations and FEM results.
- Standards & Compliance Check: Verification against applicable standards, including IEC , IEEE , and customer-specific requirements
- Risk Analysis & Optimization: Identification of potential design weaknesses and critical risk areas, opportunities for performance improvement, cost optimization, and reliability enhancement actions before manufacturing.
Our expertise allows clients to reduce technical and financial risks before manufacturing and ensure compliance with project specifications and standards. The main goal is to avoid costly redesigns and project delays while guaranteeing transformer reliability and lifecycle performance, through validation under real operating conditions.
EWP integrates manufacturer data verification, independent 2D and 3D FEM simulations, and practical field experience. The result is a design that is not only compliant, but technically validated for real operating conditions and long-term reliability.