Extra High Voltage Engineering Consultancy Services

EHV Mobile Substations - Design, Engineering, Tender Documents, Procurement Assistance, Quality Control and FAT

Detail engineering services includes the preparation of the following drawings and documents for the Extra High Voltage Mobile substations :

1. Relay and Metering SLDs of EHV bay, MV switchgear panels, LV switchgears and DBs.

2. Electrical layout plan & elevation of EHV bay, Power Transformer and MV Switchgear room..

3. Erection key diagram of EHV bay along with BOQ of clamps, connectors, conductors, shield wires, hardwares.

4. Clearance diagram for EHV bay.

5. Cable tray layout with BOQ of cable trays, bends, Tee, reducers, cable racks etc. for EHV bay, Power Transformer, Aux. Transformer and MV Switchgear room.

6. Earthing calculation and earthing layout with BOQ of all earthing materials.

7. Direct stroke lightning protection (DSLP) calculation and layout.

8. Interlocking diagrams for the EHV bay, MV Switchgears, LV Switchgears, Protection trip logics.

9. Control cable block diagrams and estimation.

10. Power cable schedule and interconnection chart.

11. Control cable schedule and interconnection chart.

12. Control schematics of EHV, MV and LV Switchgears.

13. Lighting calculations, SLD for lighting distribution and layout with BOQ of lighting materials.

14. Civil drawings of mounting of Mobile substation.

15. Steel structural GA drawings and calculations for Equipment supports (Lattice / Pipe type), Trailer platform.

16. Technical specification and BOQ of all EHV/MV/LV equipment.

17. Air conditioning and ventilation systems drawings and calculations.

18. Fire protection system drawings and calculations including Fire detection and alarm system.

19. Electrical design calculations such as Battery and Charger sizing calculation, CT/PT sizing calculation, Cable sizing calculation, Earthing calculation, DSLP calculation, Short circuit force calculation, Relay setting calculation.

20. Bid evaluation and recommendation report.

21. Vendor drawing review and approval.

22. Attending FAT at manufacturer's works.