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SEL motor protection system: SEL701-1 Monitor

Zhang, Yifan (2014) SEL motor protection system: SEL701-1 Monitor. Other thesis, Murdoch University.

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This report is for the SEL Motor Protection System—SEL701-1 Monitor. It introduces all the main units and methods that have been used and describes the entire work that have done for this project.

The aim of the project is to explore how to use SEL701-1, complete the executable technical circuit, doing fault configuration and building suitable hardware running system for SEL701-1.

This report starts from the introduction of motor protection principles, SELS and SEL701-1 Monitor, AcSELerator QuickSet and the Lab-Volt Learning System. Then it goes into the SEL701-1 Data Monitoring section. After that, it talks about the switching circuit of SEL701-1 based on the instruction manual. Fault Configuration is also included. It contains 5 fault cases that could happen to a motor while it is running. Then the report discusses using industrial Crompton Current Transformers (CTs) instead of Lab-Volt CTs.

For results of the project, the basic setup of SEL701-1 was done. A technical motor protection circuit using SEL701-1 was implemented. It includes the data monitoring circuit and the switching circuit. All the circuits were tested through the Lab-Volt learning system demonstrating the ability to control, monitor and protect a motor. Based on the technical circuit, some cases of the fault configuration has done, the cases include under/over voltage, overcurrent, phase reversal, stator winding fault and ground fault, they all achieved the set level. Last but not least, the industrial Crompton CTs were used instead of Lab-Volt CTs and it work well in the circuit.

Publication Type: Thesis (Other)
Murdoch Affiliation: School of Engineering and Information Technology
Supervisor: Cole, Graeme, Crebbin, Gregory and Lee, Gareth
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