The project involves the installation, testing, and commissioning of Auxiliary Sub-Station (ASS) equipment at seven (07) Switching Posts (SP) and Sub-Sectioning Posts (SSP) under the Overhead Electrification (OHE) system of Indian Railways (USBRL).

The scope of work covers:

Erection of OHE Structures

• Erection of complete BM,AT masts, gantries, and auxiliary structures at designated SP/SSP locations.

• Installation of insulators, brackets, and cantilevers for supporting 25 kV OHE conductors.

• Stringing, sagging, and regulation of OHE conductors where required.

ASS Equipment Installation

• Erection of auxiliary transformers, LT panels, battery chargers, distribution boards, and protective devices.

• HT/LT cabling works including laying, termination, dressing, and ferruling.

• Earthing, bonding, and lightning protection as per specifications.

Electrical & SCADA Integration

• Connection of ASS and AT equipment with the 25 kV OHE network.

• Testing of protective relays, control circuits, and interlocking schemes.

• Integration with SCADA/Remote Control Center for monitoring and control.

Testing & Commissioning

• Electrical testing of OHE structures, ASS panels, and auxiliary transformers.

• Functional verification of BM and AT circuits under load conditions.

• Commissioning of complete SP/SSP installations in coordination with Railway authorities.

Documentation & Handover

• Preparation of as-built drawings, test certificates, and operation manuals.

• Training Railway personnel on operation and preventive maintenance of ASS and AT installations.