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IEEE C57.156 describes measures that may be taken to help mitigate tank rupture and the uncontrolled release of insulating liquid from energized liquid-immersed power transformers and reactors due to internal electrical faults. It also presents the current state of knowledge regarding the relationship between tank rupture and variables such as arc energy level, hydraulic pressures, and tank pressure withstand capability, and outlines various actions that transformer users and manufacturers may consider in system design, product design, monitoring and signaling devices, and insulating fluid selection to help reduce the risk of rupture.
Active Committees/Task Forces of Interest
- IEEE PES Transformers Committee
- Working Group C57.156 – Power Transformers – Guide for Tank Rupture Mitigation (This Working Group is part of the Power Transformers Subcommittee under the IEEE PES Transformers Committee
Publications
- Swinderman, R. Thompson, G. Zhang, and P. D. Zhao, “Power Transformer Tank Rupture and Mitigation–A Summary of Current State of Practice and Knowledge by the Task Force of IEEE Power Transformer Subcommittee,” IEEE Transactions on Power Delivery, vol. 24, no. 4, pp. 1959–1967, October 2009
Other Available Material
- IEEE C57.156-2016 – IEEE Guide for Tank Rupture Mitigation of Liquid-Immersed Power Transformers and Reactors