What size of motor do you consider to be modelled for motor starting analysis? Or do you always model the largest motor in the bus and separate it with the lump load?
Motor inertia can be found in motor manufacturer's data sheet and GA drawing as well; Load/coupling inertia can be found in pump / compressor manufacturer data sheet.... can check WR sq. value also
What size of motor do you consider to be modelled for motor starting analysis? Or do you always model the largest motor in the bus and separate it with the lump load?
Rightly said; it should be the largest KW rated motor connected with the bus as more conservative one
Thanks for your efforts
It's my pleasure, thank you, stay tuned
What are the additional parameters to be modelled in ETAP for Dynamic study as compared to static motor study?
For motor dynamic model in ETAP you need to provide 1. Motor characteristic curve model 2. Inertia of motor, load & coupling and 3. Load curve model.
what the efficiency you entry? Since if you entry 92% for example. Current flow will higher than the motor nameplate from manufacturer.
For this example I have taken ETAP library default data..
However, you need to put the values from motor manufacturer's data sheet only
Sir what is system required for etap software 500 bus project
Normal set up is enough
How we find Inertia? Since mostly manufacturer doesn't provide this data
Motor inertia can be found in motor manufacturer's data sheet and GA drawing as well;
Load/coupling inertia can be found in pump / compressor manufacturer data sheet.... can check WR sq. value also