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IDMT OCR Settings and Coordination by MuhamadIstikhori is a document available to read on EtoBox.

What is IDMT OCR Settings and Coordination about?

1) IDMT relays allow for coordination between protective devices by setting the plug setting multiplier (PSM) and time multiplier setting (TMS). The PSM sets the pickup current and TMS sets the operating time curve. 2) Coordination is achieved by grading, where the operating time of relays closer to faults is set to be longer than relays further from faults. A grading margin of 0.3-0.5 seconds is typically used. 3) An example is given to find the PSM and TMS settings for two relays (A and B) to achieve a

Author

MuhamadIstikhori

Language

EN