Single phase fault analysis for temporary and permanent fault

  • Madhuri Sanap
  • Prof. Kavita Shrivastava
Keywords: Fault analysis, temporary fault, permanent fault, Automatic tripping.


This paper to develop an automatic tripping mechanism for the single phase supply system. The project output resets automatically after a brief interruption in the event temporary fault while it remains in tripped condition in case of permanent fault. There are some failures due to some faults which can be temporary or permanent. These faults lead to substantial damage to the power system equipment. It is common, the faults might be LG (Line to Ground) in the supply systems and these faults in single phase supply system can affect the power system. To overcome this problem a system is built, which can sense these faults and automatically disconnects the supply to avoid damage. This system is built using single phase transformers having input 230 volt and output at 12 volt. This concept low voltage testing of fault conditions is followed. A switch is used to create the LG fault in low voltage side, for activating the tripping mechanism. Short duration fault returns the supply to the load immediately called as temporary trip while long duration shall result in permanent trip. The idea in the future can be extended to developing a device to send message to the authorities via SMS by interfacing a GSM modem.


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How to Cite
Sanap, M., & Shrivastava, P. K. (2018, April 15). Single phase fault analysis for temporary and permanent fault. ASIAN JOURNAL FOR CONVERGENCE IN TECHNOLOGY (AJCT ) -UGC LISTED, 4(I). Retrieved from
Electrical & Electronics Engineering