Transformer Problem (see attached picture). Use given tables (see attached picture). TABLE 14-3Standard kVA Ratings for Pad-Mounted TransformersSingle PhaseThree Phase257537.5112.550150752251003001675007501000150020002500Source: Reprinted from American NationalStandard C57.12.21-1980 by permission of theNational Electrical Manufacturers Association.TABLE 14-4Standard Voltage Ratings for Pad-MountedTransformersSingle PhaseThree Phase24004160GRDY/24008320GRDY/48004160480012,000GRDY/693012,470GRDY/720013,200GRDY/762013,800GRDY/797016,430GRDY/943022,860GRDY/13,20023,900GRDY/13,80034,500GRDY/19,920720012,00012,47013,20013,80016,34022,860GRDY/13,20023,900GRDY/13,80024,940GRDY/14,40034,500GRDY/19,920208Y/120240/120240480480Y/277 1. A commercial office building is to be supplied service at 208Y/120 V from the utilıtycompany 12.47 kV distribution feeder (12.47 kV line-to-line and 7.2 kV line-to-neutral). The estimated demand load is 85 kW at 0.9 lagging power factor. Determine theappropriate apparent power rating and voltage rating of the three-phase, pad-mountedtransformer required to serve this load. The transformer is connected delta-groundedwye. Assume the load is continuous and allow a 25% factor for load growth.

Concept: 1) Apparent power=Active power kwpf cos∅ 2) In delta connection, the line voltage = Phase…

. A commercial office building is to be supplied service at 208Y/120 V from the utilıty company 12.47 kV distribution feeder (12.47 kV line-to-line and 7.2 kV line-to- neutral). The estimated demand load is 85 kW at 0.9 lagging power factor. Determine the appropriate apparent power rating and voltage rating of the three-phase, pad-mounted transformer required to serve this load. The transformer is connected delta-grounded wye. Assume the load is continuous and allow a 25% factor for load growth.

. A commercial office building is to be supplied service at 208Y/120 V from the utilıty company 12.47 kV distribution feeder (12.47 kV line-to-line and 7.2 kV line-to- neutral). The estimated demand load is 85 kW at 0.9 lagging power factor. Determine the appropriate apparent power rating and voltage rating of the three-phase, pad-mounted transformer required to serve this load. The transformer is connected delta-grounded wye. Assume the load is continuous and allow a 25% factor for load growth.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.26P: A small manufacturing plant is located 2 km down a transmission line, which has a series reactance...

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