Inactive-Withdrawn Standard

IEEE/ANSI C57.12.50-1981

American National Standard Requirements for Ventilated Dry-Type Distribution Transformers, 1 to 500 kVA, Single-Phase, and 15 to 500 kVA, Three-Phase, With High-Voltage 601 to 34 500 Volts, Low-Voltage 120 to 600 Volts

This standard describes certain electrical and mechanical characteristics and takes into consideration certain safety features of 60-Hz, two-winding, ventilated dry-type transformers with self-cooled ratings 1 to 500 kVA, single-phase, and 15 to 500 kVA, three-phase, inclusive; high-voltage 601 to 34 500 volts, and low-voltage 120 to 600 volts, inclusive; generally used for step-down purposes. (Forced-air-cooled ratings for certain sizes are listed in Part II.)

Sponsor Committee
PE/TR - Transformers
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Status
Inactive-Withdrawn Standard
History
ANSI Approved:
1980-07-15
Published:
1981-08-15

Working Group Details

Society
IEEE Power and Energy Society
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Sponsor Committee
PE/TR - Transformers
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No Active Projects
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No Superseded Standards
No Inactive-Withdrawn Standards
No Inactive-Reserved Standards
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