UFC 3 -520-01
June 10, 2002
4-7.7
C57.12.51, Requirements for Ventilated Dry-Type Power Transformers, 501
kVA and Larger, Three-Phase, with High-Voltage 601 to 34500 Volts, Low Voltage
208Y/120 to 4160 Volts--covers electrical and mechanical characteristics 60 Hertz,
two-winding, 3 phase, ventilated dry type transformers.
4-7.8
C57.12.52, Requirements for Sealed Dry-Type Power Transformers, 501 kVA
and Larger, Three-Phase, with High-Voltage 601 to 34500 Volts, Low Voltage 208Y/120
to 4160 Volts--covers electrical and mechanical characteristics 60 Hertz, two -winding,
3 phase, sealed dry type transformers.
4-7.9
C57.12.70, Terminal Markings and Connections for Distribution and Power
transformers.
4-7.10
C57.94, Recommended Practice for Installation, Application, Operation, and
Maintenance of Dry-Type General Purpose Distribution and Power Transformers--
covers ventilated, non-ventilated, and sealed applications, self-cooled or forced air
cooled.
4-7.11
C57.110--provides transformer sizing criteria for transformers supplying
nonsinusoidal loads.
4-7.12
IEEE 141, IEEE Recommended Practice for Electric Power Distribution for
Industrial Plants (IEEE Red Book)--provides general considerations for transformer
applications.
4-7.13
IEEE 241--provides general considerations for transformer applications.
4-7.14
NEMA ST 1 --provides design requirements for control, industrial control,
Class 2, signaling, ignition, and luminous tube transformers.
4-7.15
NEMA ST 20--provides design requirements for general purpose dry type
transformers.
4-7.16
TM 5-686, Power Transformer Maintenance and Acceptance Testing.
4-14
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