Case – Maskeliya 33Kv Gantry Construction, SESRIP project

Challenge – Selected land for the gantry construction by CEB was a rock land

During the design of the Maskeliya two-sided single busbar switching gantry, the designated land allocated by the Ceylon Electricity Board (CEB) was found to be rocky due to its prolonged use for tea cultivation. Consequently, the installation of electrical earthing for the gantry posed a challenge in finding a suitable location that would meet the required earth resistance. The only viable option was in close proximity to a footpath frequently utilized by local residents. This raised concerns among the gantry designer, Ms. Dilini, regarding the potential danger to the local people during lightning events. However, controlling the movement of people in the village proved to be extremely challenging.
To address this issue, Electrical Engineer Dilini Wijayakumara, a graduate of the Sri Lanka Institute of Information Technology (SLIIT), proposed an alternative solution to achieve the necessary earthing. The proposal involved connecting the gantry's earthing system to the towers located on both sides of the gantry. This arrangement was thoroughly evaluated and approved, ultimately resulting in the attainment of the designed earth resistance for the gantry. This solution not only proved to be cost-effective but also environmentally friendly, ensuring the safety of the local community.

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