IEEE C57.12.56 : 1986

Table of Contents

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)

Abstract

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.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN