+
Kolkata Metro installs India's longest circuit breaker panel
ECONOMY & POLICY

Kolkata Metro installs India's longest circuit breaker panel

Metro Railway, Kolkata, has upgraded a 40-year-old 11 kV Traction Sub Station (TSS) at Noapara with India's longest High-Speed Circuit Breaker (HSCB) panel.

This installation is part of the Blue Line, which links Kavi Subhash (New Garia) in South Kolkata to Dakshineswar in the north, an extension of India's first Metro service that began in 1984.

"Metro Railway General Manager P Uday Kumar Reddy activated the 33 kV TSS featuring the Blue Line's first Gas Insulated Switchgear (GIS) panel. This advanced TSS includes the GIS 33 kV high tension panel, the longest HSCB panel in India, an IGBT-based regenerative battery charger, a 33 kV dry-type traction transformer, and a 3 MW twelve pulse rectifier," stated Kausik Mitra, CPRO of Metro Railway.

The previous 11 kV TSS had a six-pulse rectifier and a dry-type traction transformer, while the new system offers a 50% higher capacity. This upgraded model will be used for enhancing all old substations on the Blue Line to improve service.

Mitra noted that the HSCB panel, comprising 17 units, facilitates power blocks for regular maintenance, addressing issues arising from the increased service of 34 rakes on the Blue Line.

"We planned this project in July with a detailed monitoring strategy before finalizing the substation shutdown. Work commenced in August and was completed within two months, with no service disruptions. Final tests were conducted in early October, and the electrical inspector approved the charging of the substation last week," added Mitra.

The transition to a 33 kV network brings several advantages, including improved reliability, reduced costs from the elimination of older switchgear, decreased distribution losses due to higher voltage, and a more environmentally friendly system.

Metro Railway anticipates savings of nearly Rs 350 crore in capital expenditure for equipment upgrades and energy costs across the Blue Line. Upgrades for the traction sub-stations at Belgachia and Dumdum are scheduled for December 2024 and February 2025, respectively.

Metro Railway, Kolkata, has upgraded a 40-year-old 11 kV Traction Sub Station (TSS) at Noapara with India's longest High-Speed Circuit Breaker (HSCB) panel. This installation is part of the Blue Line, which links Kavi Subhash (New Garia) in South Kolkata to Dakshineswar in the north, an extension of India's first Metro service that began in 1984. Metro Railway General Manager P Uday Kumar Reddy activated the 33 kV TSS featuring the Blue Line's first Gas Insulated Switchgear (GIS) panel. This advanced TSS includes the GIS 33 kV high tension panel, the longest HSCB panel in India, an IGBT-based regenerative battery charger, a 33 kV dry-type traction transformer, and a 3 MW twelve pulse rectifier, stated Kausik Mitra, CPRO of Metro Railway. The previous 11 kV TSS had a six-pulse rectifier and a dry-type traction transformer, while the new system offers a 50% higher capacity. This upgraded model will be used for enhancing all old substations on the Blue Line to improve service. Mitra noted that the HSCB panel, comprising 17 units, facilitates power blocks for regular maintenance, addressing issues arising from the increased service of 34 rakes on the Blue Line. We planned this project in July with a detailed monitoring strategy before finalizing the substation shutdown. Work commenced in August and was completed within two months, with no service disruptions. Final tests were conducted in early October, and the electrical inspector approved the charging of the substation last week, added Mitra. The transition to a 33 kV network brings several advantages, including improved reliability, reduced costs from the elimination of older switchgear, decreased distribution losses due to higher voltage, and a more environmentally friendly system. Metro Railway anticipates savings of nearly Rs 350 crore in capital expenditure for equipment upgrades and energy costs across the Blue Line. Upgrades for the traction sub-stations at Belgachia and Dumdum are scheduled for December 2024 and February 2025, respectively.

Next Story
Real Estate

Shriram Properties Launches ‘Codename: The One’ in Bengaluru

Shriram Properties (SPL), a leading real estate developer focused on the mid-market and mid-premium segments, has announced the launch of its latest residential project under the banner “Codename: The One” in Bengaluru’s Electronic City corridor. This feature-rich gated community will offer 340 spacious 2- and 3-BHK residences, with a total saleable area of approximately 5 lakh square feet and an estimated revenue potential of over Rs 3.5 billion. The project is expected to be developed over a span of more than three years.  Strategically located near the Bommasandra Metro stat..

Next Story
Resources

India Warehousing Show 2025 Closes with Strong Global Presence

The 14th edition of the India Warehousing Show (IWS) 2025 concluded successfully at Yashobhoomi (IICC), Dwarka, drawing participation from over 300 exhibitors across 15 countries and welcoming 15,000+ visitors. Recognised as India’s leading platform for warehousing and logistics excellence, IWS 2025 offered a comprehensive display of cutting-edge automation, sustainable warehousing solutions, and next-gen supply chain technologies. The show was inaugurated by Shri Pankaj Kumar, Joint Secretary – Logistics, DPIIT, Ministry of Commerce and Industry, Government of India. In his opening a..

Next Story
Equipment

MHIET Launches 450kW Gas Cogeneration System with H₂ Co-Firing

Mitsubishi Heavy Industries Engine & Turbocharger (MHIET), part of the Mitsubishi Heavy Industries Group, has launched a new 450kW gas cogeneration system, the SGP M450, jointly developed with Toho Gas Co.,. The system supports hydrogen co-firing at up to 15 vol per cent, with no loss in performance or reliability.  The system is currently available in the Japanese market, and has been developed from the existing GS6R2 city gas engine platform. Key modifications were made to the fuel gas and engine control systems to enable hydrogen co-firing.   Verified through de..

Advertisement

Advertisement

Subscribe to Our Newsletter

Get daily newsletters around different themes from Construction world.

STAY CONNECTED

Advertisement

Advertisement

Advertisement

Advertisement

Talk to us?