Marutee
Website:
marutee.com
Job details:
Job Summary
We are looking for an
Electrical Design Engineer with
3–7 years of relevant experience in EV charging infrastructure, electrical system design, power distribution, PDU development, or HV/LV electrical systems.
The candidate will be responsible for designing the complete electrical architecture of EV charging stations, from
utility/grid input to individual chargers, including power distribution, protection systems, PDU design, HV/LV panels, switchgear, electrical calculations, layouts, and detailed design documentation.
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
Practical Experience With
- 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
3–7 years of relevant experience
Education
BE/B.Tech – Electrical / Electrical & Electronics Engineering or equivalent
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