POLYENERGY utilizes ETAP software for the Transformer Sizing Studies.

ETAP has compiled the information contained on standards ANSI/IEEE C57, IEC 60076-2 & 60726 into a program that can easily determine the proper size of a power transformer. The method used by the program considers serveral factors like ambient temprature, altitude, cooling stage and type (dry or liquid fill). When sizing a transformer, it it also very important to consider the expected future growth of the required load. The MVA sizing module uses adjusting factors to take this into account. The transformer short-circuit requirement “transformer impedance and basic impulse level (BIL)”, are also considered by the MVA sizing module. The module has built in functions that compare the calculated size and impedance against the minimum values recommended by the standards.

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