How to correctly size a transformer

Engineers must make informed decisions regarding the proper transformer sizing selection, electrical and mechanical requirements and impacts to the electrical system under different operating and loading conditions A transformer is a major component of an electrical distribution system with the most...

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Bibliographic Details
Published inConsulting - Specifying Engineer Vol. 56; no. 11; pp. 26 - 33
Main Authors Salami, Zia, Vang, Lilly, Hendels, Adrian
Format Trade Publication Article
LanguageEnglish
Published Denver CFE Media 01.12.2019
Subjects
Altitude
Ambient temperature
Design
Electrical codes
Engineers
Load
Methods
Public buildings
Ratings & rankings
Systems design
Transformers
Ventilation
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Summary:Engineers must make informed decisions regarding the proper transformer sizing selection, electrical and mechanical requirements and impacts to the electrical system under different operating and loading conditions A transformer is a major component of an electrical distribution system with the most impact on system performance during steady-state (normal) operation and during system disturbances, such as a fault. [...]engineers must ensure that the transformer is appropriately sized for the specific application and can supply adequate power to the loads under designed conditions and standard guidelines. Because dry-type transformers require air for cooling, it is necessary to provide an adequately sized ventilation system for the heat generated by the transformer. Several details, including transformer type, size, ventilation, atmospheric pressure, altitude, voltage level and clearance will have a determining factor in selecting the ideal location for the transformer required for a given installation. In both cases, load growth and future facility modification and de-rating factors such as ambient temperature and altitude should be considered.
ISSN:0892-5046
1558-2876