![]() ![]() From the Digest, an EXN75T3H will satisfactorily serve this load. This calculates to 63+ kVA, thus we round up to a standard Three Phase size 75kVA. ![]() From the Digest, an EE50S3H will satisfactorily serve this load. This calculates to 42 kVA, thus we round up to a standard Single Phase size 50kVA. Single Phase Transformer Example: V = 240, I = 175 Therefore: kVA = (240 x 175) / 1000 = 42 kVA Then round up to the next standard 3ph kVA rating as found in Section 14 of SquareD/Schneider Electric Catalog, Digest 178. ![]() Where 1.732 is the simple numerical value for the square root of 3 (1.7320508.) Three Phase Transformers: kVA = (V * I * 1.732) / 1000 Single Phase Transformers: kVA = (V * I) /1000 To determine kVA you must have at least two pieces of information: There are also the following methods for calculating or finding the Required Capacity kVA Rating or Amperage Capacity for Single and Three Phase Transformers:Ģ. This link on the Schneider Electric Website is a Transformer Data Calculator: This Frequently Asked Question offers three different methods for finding the needed information:ġ. ![]()
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