North Central Railway’s (NCR) Kanpur Electric Loco Shed (ELS) has installed an industrial ‘Rotary Desiccant Dehumidifier’ on locomotive number 44061.The objective is to protect the ‘traction converter’—a critical electronic component of an electric locomotive from moisture and to enhance its operational efficiency.
This technology, widely used globally, is being tested after being adapted to suit the specific operating conditions and weather patterns of Indian Railways.
The traction converter is prone to risk of corrosion and oxidation to electronic cards, connectors, and metal contacts during monsoon or periods of high humidity. Moisture also causes dust and dirt to adhere easily, leading to issues such as electrical leakage and short circuits (flashovers).
The installed ‘rotary dehumidifier’ absorbs excess moisture from the air. By maintaining a dry internal environment, the electronic equipment remains protected, significantly reducing the likelihood of sudden malfunctions.
Benefits
This technology protects traction converters against corrosion, dust on components caused by moisture, improves insulation, reduces malfunctions such as short circuits and traction converter failures caused by moisture and saves time by reducing the need for frequent locomotive repairs.
Currently, the locomotive equipped with this system (No. 44061) is in service. After a three-month trial run, once the engine returns to the Kanpur shed, a detailed analysis of its data and performance will be conducted. If the trial proves successful, this technology will be implemented in the engines of other trains operating in monsoon-prone and high-humidity regions.
