AH_101 - Electrical Design Engineer

Job Summary

Key Responsibilities

• Design complete electrical architecture for EV charging stations, from utility/grid input to individual chargers.
• Develop power distribution schemes for multiple EV chargers at a single location.
• Perform electrical calculations for:
  • Connected load, maximum demand, diversity & demand factors
  • Voltage drop and short-circuit/fault current
  • Cable and busbar sizing
  • MCB/MCCB/ACB/fuse selection
  • Earthing & grounding
  • Power factor and reactive power
  • Transformer and DG capacity
  • Thermal loading and derating
• Develop Single-Line Diagrams (SLDs), electrical schematics and wiring diagrams.
• Design and develop Power Distribution Units (PDUs) for EV charging applications.
• Design/specify HV/LV panels, switchboards, switchgear, busbars, breakers, contactors, isolators, protection devices and metering systems.
• Develop electrical layouts, panel layouts, cable routing, cable schedules, termination details and interconnection drawings.
• Ensure proper segregation and protection of HV, LV, control and communication circuits.
• Coordinate electrical design with mechanical, civil, charger, controls and electronics teams.
• Review designs for safety, reliability, maintainability, manufacturability and applicable standards.
• Prepare technical specifications, BOMs, schematics and design documentation.
• Support component selection and supplier interactions for panels, switchgear, cables, connectors and protection devices.
• Support installation, commissioning, troubleshooting and resolution of electrical design issues.
• Review existing installations and recommend improvements for capacity expansion and future charger additions.

Required Technical Skills

• Bachelor’s degree in Electrical & Electronics Engineering (EEE), Electrical Engineering, or equivalent.
• 3–7 years of relevant experience in electrical design, EV charging infrastructure, industrial electrical systems, power distribution, PDU development or similar applications.
• Good understanding of EV charging systems and charging station electrical architecture.
• Strong knowledge of grid-to-charger power distribution and multi-charger installations.
• Experience in sizing:
  • Cables and wires
  • Busbars
  • Switchgear and protection devices
  • Panels and PDUs
  • Transformers
  • Earthing systems
  • Power distribution equipment
• Knowledge of HV/LV systems, switchgear, panel boards and protection systems.
• Experience in PDU design and development, preferably in automotive, EV or industrial applications.
• Experience with HV panel board and switchgear design/development.
• Understanding of electrical protection coordination and basic selectivity/discrimination.
• Good knowledge of electrical safety, isolation, earthing and fault protection.
• Knowledge of relevant IEC/IS and applicable EV charging/electrical installation standards.
• Ability to read and develop electrical schematics, SLDs and wiring diagrams.

Design Software

• SolidWorks – 3D modelling and mechanical/electrical packaging of panels, PDUs and components.
• AutoCAD Electrical, EPLAN or equivalent electrical design/layout tools.
• Microsoft Excel for electrical calculations, sizing and load analysis.
• Familiarity with electrical simulation/calculation tools is an added advantage.

Preferred Experience

• Experience with AC and DC EV charging systems, including high-power charging.
• Experience designing infrastructure for multiple chargers at a single site.
• Experience with HT/LT distribution systems, transformers, APFC systems, MDBs, SMDBs, MCCs and distribution panels.
• Experience with HV cable selection, termination and routing.
• Knowledge of energy metering, protection relays, surge protection and power quality.
• Experience in automotive, EV, industrial automation, renewable energy or power electronics.
• Exposure to site installation, commissioning and electrical troubleshooting.

Key Competencies

• Strong analytical and electrical calculation skills.
• Ability to convert system-level power requirements into practical electrical architecture.
• Strong understanding of electrical safety and design standards.
• Good technical documentation and communication skills.
• Ability to work independently and coordinate with cross-functional teams.
• Practical approach to design, component selection, cost optimization and manufacturability.
• Ability to own electrical design from concept → calculations → SLD/schematic → detailed design → prototype/panel development → installation → commissioning.

Experience

Education