Table of Contents

1 Overview
  1.1 Scope
  1.2 Mandatory requirements
2 References
3 Definitions
4 Symbols
5 Service conditions
  5.1 Usual service conditions
  5.2 Unusual service conditions
6 Rating data
  6.1 Taps of rectifier transformers
  6.2 Cooling classes of transformers
  6.3 Frequency
  6.4 Phase
  6.5 Rated kVA
  6.6 Compensation on rectifier transformers
  6.7 Rated current
  6.8 Connections
  6.9 Polarity, angular displacement, and lead markings
  6.10 Impedance
  6.11 Losses
  6.12 Temperature rise and insulation system capability
  6.13 Nameplates
7 Construction
  7.1 Mounting and location
  7.2 Tanks
  7.3 Methods of coolant preservation
  7.4 Grounding
  7.5 Connections for shipping
  7.6 Accessories
8 Testing and calculations
  8.1 Routine tests
  8.2 Symbols used in tests
  8.3 Resistance measurement
  8.4 Dielectric tests
  8.5 Excitation losses
  8.6 Load losses
  8.7 Losses in interphase transformers
  8.8 Impedance tests
  8.9 Ratio tests
  8.10 Temperature rise test
  8.11 Short-circuit tests
  8.12 Polarity and phase relation
9 Tolerances
  9.1 Tolerances for ratio
  9.2 Tolerances for impedance
  9.3 Tolerances for losses
Annex A (informative) Harmonic loss calculation examples
Annex B (informative) Bibliography

Abstract

Develops a standard for transformers serving semi-conductor power rectifiers employing monocrystal-line semiconductor diodes or thyristors.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN
Supersedes	IEEE DRAFT C57.18.10 : D12 APR 97