IEEE ANSI C57.12.22 1993
$24.38
American National Standard for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers With High-Voltage Bushings, 2500 kVA and Smaller; High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 480 Volts and Below
| Published By | Publication Date | Number of Pages |
| IEEE | 1993 | 24 |
New IEEE Standard – Inactive – Withdrawn. This standard is intended for use as a basis for determining performance, interchangeability, and safety of the equipment covered, and to assist in the proper selection of such equipment.This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of three-phase, 60 Hz., mineral-oil-immersed, self-cooled, padmounted,compartmental-type distribution transformers with high-voltage bushings. These transformers are rated 2500 kVA and smaller, with high voltages of 34 500 GrdY/19 920 volts and below, and with low voltages of 480 volts and below. These transformers are generally used for step-down purposes from an underground primary cable supply.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Title Page |
| 5 | CONTENTS |
| 7 | Introduction Participants |
| 9 | 1. Scope 2. Referenced American National Standards |
| 10 | 3. Ratings 3.1 Kilovolt-ampere ratings 3.2 Voltage ratings and tap ratings 4. Basic lightning impulse insulation levels and dielectric test levels 5. Impedance voltage 5.1 Percent impedance voltage 5.2 Tolerance on impedance voltage 5.3 Tolerance on impedance voltage on a tap |
| 11 | 6. Tests 6.1 General 6.2 Dielectric tests 7. Constructoin 7.1 General |
| 12 | 7.2 Bushings and terminals 7.3 High-voltage and low-voltage compartments 7.4 Instruction nameplate 7.5 Oil preservation |
| 13 | 7.6 Tanks |
| 14 | 8. Storage and installation 8.1 Storage 8.2 Installation 9. Other requirements that may be specified for some applications |
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