Title :
Application guidelines for dry-type distribution power transformers
Author_Institution :
Div. of Eng., Colorado Sch. of Mines, Golden, CO, USA
Abstract :
A large number of distribution transformers, currently utilized in low voltage (LV) power systems are of dry-type design. This includes, the IEEE Class II ventilated dry-type design with 3-phase kVA ratings in the approximate range of 500 kVA - 2.5 MVA and primary voltage ratings ranging from 4.16 kV to 34.5 kV and the secondary voltage ratings of 600 V and below. This paper presents a comprehensive review of dry-type transformers design and provides some application guidelines including insulation system characteristics; BIL; losses, overloading, and loss-of life; and price.
Keywords :
coils; power distribution economics; power transformers; transformer cores; 3-phase kVA ratings; 4.16 to 34.5 kV; 500 kVA to 2.5 MVA; BIL; IEEE Class II ventilated dry-type design; application guidelines; distribution transformers; dry-type distribution power transformers; loss-of life; losses; low voltage power systems; overloading; price; primary voltage ratings; secondary voltage ratings; transformer coil; transformer core; Costs; Dielectrics and electrical insulation; Electrical equipment industry; Guidelines; Manufacturing; Power transformer insulation; Power transformers; Steel; Thermal conductivity; Transformer cores;
Conference_Titel :
Industrial and Commercial Power Systems, 2003. 2003 IEEE Technical Conference
Print_ISBN :
0-7803-7771-0
DOI :
10.1109/ICPS.2003.1201495
