This voluntary consensus standard sets forth the requirements for power transformer application. This standard is intended to be used as a basis for performance@ interchangeability@ and safety of the equipment covered and to assist in the proper selection of such equipment. This document is a product standard that covers certain electrical@ dimensional@ and mechanical characteristics of 50 Hz and 60 Hz@ liquid-immersed power transformers and autotransformers. Such power transformers may be remotely or integrally associated with either primary switchgear or substations@ or both@ for step-down or step-up purposes and base rated as follows: 833 kVA and above single-phase@ 750 kVA and above three-phase. This standard applies to all liquid-immersed power transformers and autotransformers that do not belong to the following types of apparatus: a) Instrument transformers b) Step voltage and induction voltage regulators c) Arc-furnace transformers d) Rectifier transformers e) Specialty transformers f) Grounding transformers g) Mobile transformers h) Mine transformers Mandatory requirements When this standard is used on a mandatory basis@ the words shall and must indicate mandatory requirements@ and the words should and may refer to matters that are recommended and permitted@ respectively@ but not mandatory. NOTE??The introduction of this standard describes the circumstances under which the document may be used on a mandatory basis.1 1 Notes in text@ tables@ and figures of a standard are given for information only and do not contain requirements needed to implement the standard.
1988IEEE C57.12.10-1988 Transformers - 230 kV and Below 833/958 Through 8333/10 417 kVA@ Single-Phase@ and 750/862 Through 60 000/ 80 000/100 000 kVA@ Three-Phase Without Load Tap Changing; and 3750/ 4687 Through 60 000/ 80 000/100 000 kVA with Load Tap Changing - Safety Require
1977IEEE C57.12.10-1977 REQUIREMENTS FOR TRANSFORMERS 230 000 VOLTS AND BELOW 833/958 THROUGH 8333/10 417 KVA@ SINGLE-PHASE@ AND 750/ 862 THROUGH 60 000/ 80 000/100 000 KVA@ THREE-PHASE; ERRATA - APRIL 1978@ SUPPLEMENT C57.12.10A - MAY 1978
1958IEEE C57.12.10-1958 American Standard Requirements@ Terminology@ and Test Code for Distribution@ Power@ and Regulating Transformers@ and Reactors Other Than Current-Limiting Reactors