How to choose transformer capacity
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For a 1100KW power device, what capacity transformer should be selected? Can a 1000KVA transformer be used?
This one is quite difficult to answer; parameters such as the maximum motor capacity, utilization factor, and synchronism factor are needed. Experience suggests it’s sufficient.
No, 1 KVA is approximately equal to 0.8 KW, and the transformer needs to have a certain margin in capacity to account for the power requirements of the equipment.
When selecting capacity, it is related to the voltage level, starting method, wiring method, as well as other parameters of the transformer; in particular, the short-circuit impedance must match the motor’s overload and short-circuit resistance capabilities.
You can’t say that; it mainly depends on what kind of equipment you are using, and then an analysis can be done
This question cannot be answered; based on your description, it should be equipment with a 380V voltage rating. To determine the nature of the load, should it be started directly or with a soft start? Start in batches or in groups? Is 1100W the calculated load or the installed load? What is the voltage drop caused by starting the maximum motor? If you want to understand how to select transformers, for a simpler approach you can study the book \"Factory Power Supply\" written by Liu Shaocai, and then you will know how to choose the right transformers.
Is this 1100Kw the installed capacity or the operating capacity?