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IEEE C57.12.56-1986

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

IEEE Standard Test Procedure for Thermal Evaluation of Insulation Systems for Ventilated Dry-Type Power and Distribution Transformers
Available format(s)

PDF

Superseded date

10-15-2021

Language(s)

English

Published date

10-03-1986

1 Introduction
  1.1 Scope
  1.2 Purpose
  1.3 References
  1.4 Applicable Document in preparation
2 Basic Considerations
  2.1 General
  2.2 Intent
  2.3 Aging factors
  2.4 Data treatment
3 Test Procedures
  3.1 General
  3.2 Test Models
  3.3 Screening
  3.4 Test Cycles
  3.5 Temperature Aging
  3.6 Humidity Conditioning
  3.7 Dielectric Tests
4 Reporting
Annex A (informative)
Annex B (informative)

Determines temperature classification of ventilated dry-type power and distribution transformer insulation systems by test rather than chemical composition. For transformers listed in ANSI C57.12.50-1981, ANSI C57.12.51-1981 with highest voltages of over 600 V.

Committee
Transformers
DocumentType
Standard
Pages
20
PublisherName
Institute of Electrical & Electronics Engineers
Status
Superseded

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IEEE C57.12.51-2008 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
IEEE 101A-1974 IEEE Simplified Method for Calculation of the Regression Line (Appendix to IEEE Guide for the Statistical Analysis of Thermal Life Test Data, IEEE Std 101-1972)
IEEE 4-2013 IEEE Standard for High-Voltage Testing Techniques
IEEE C57.98-2011 IEEE Guide for Transformer Impulse Tests
IEEE 101 : 1987 GUIDE FOR THE STATISTICAL ANALYSIS OF THERMAL LIFE TEST DATA
ASTM E 104 : 2002 Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
IEEE C57.12.50 : 1981 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 34500 VOLTS, LOW-VOLTAGE 120 TO 600 VOLTS

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