Step 1: Collect a list of the expected electrical loads in the facility.The basic steps for creating a load schedule are: The following methodology assumes that the load schedule is being created for the first time and is also biased towards industrial plants. There are no standards governing load schedules and therefore this calculation is based on generally accepted industry practice. It is recommended that the load schedule is started as soon as practically possible. The electrical load schedule can typically be started with a preliminary key single line diagram (or at least an idea of the main voltage levels in the system) and any preliminary details of process / building / facility loads. Preparing the load schedule is one of the earliest tasks that needs to be done as it is essentially a pre-requisite for some of the key electrical design activities (such as equipment sizing and power system studies). The load schedule is usually categorised by switchboard or occasionally by sub-facility / area. ![]() ![]() The electrical load schedule is an estimate of the instantaneous electrical loads operating in a facility, in terms of active, reactive and apparent power (measured in kW, kVAR and kVA respectively).
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