High Capacity Service Entrance High capacity service entrances are those installations having continuous current ratings above 600 amperes and available fault currents up to 130kA rms symmetrical amperes at 240 …
Transformer Primary Connections Transformer primaries are usually connected in delta. The wye connection is occasionally used and may or may not have its neutral grounded. If the transformer secondary is …
Secondary Grounding When a wye connected circuit and solidly or effectively grounded neutral is used, the following benefits are obtained in addition to the dual voltage capability, (a) A single …
Motor Starting Phenomenon The three-phase induction motors represent the most significant load in the industrial plants, over the half of the delivered electrical energy. Motor loads specially the medium and …
Whenever the voltage at the terminals of an induction motor varies from its nameplate rating, either performance or life is sacrificed.The effect may be minor or serious depending upon the …
In brownfield projects, particularly those facilities which are more than three (3) decades old, the availability of native CAD file drawings is almost nil. Redrafting the facility drawing is not …