CLS Panel – 0020 and 0025
RDSO Specification No. TI/SPC/PSI/0020 (with A&C Slips No. 1 to 4) and TI/SPC/PSI/0025 cover the technical requirements for Control & Distribution Panels (CLS Panels) used in 25 kV AC traction systems of Indian Railways.
These panels provide reliable, regulated single-phase power supply (typically 230 V AC) for Colour Light Signalling (CLS) equipment, ensuring uninterrupted operation of railway signals, track circuits, and related safety systems at stations and level crossings.
The specifications define design, construction, protection features, automatic changeover arrangements, ratings (e.g., 30A, 60A, up to higher capacities), testing, and performance standards to meet the demanding environment of electrified traction installations.
Amendments (A&C No. 1 to 4) incorporate updates for improved reliability, safety, and compliance with latest railway signalling needs.
These RDSO-approved CLS panels are widely used in traction power supply infrastructure to support safe and efficient train operations across Indian Railways.