IEEE C57.12.10-2017

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IEEE Standard Requirements for Liquid-Immersed Power Transformers

Published By	Publication Date	Number of Pages
IEEE	2017

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Description

Revision Standard – Active. 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: instrument transformers, step voltage and induction voltage regulators, arc-furnace transformers, rectifier transformers, specialty transformers, grounding transformers, mobile transformers, and mine transformers.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std C57.12.10™-2017 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
7	Participants
9	Introduction
11	Contents
12	1. Overview 1.1 Scope 1.2 Purpose
13	2. Normative references
14	3. Definitions 4. Rating data 4.1 Usual service conditions 4.2 Rated apparent power
16	4.3 Voltage ratings 4.4 Insulation levels 4.5 Taps
17	4.6 Impedance voltage
18	4.7 Design, routine, and other tests 5. Construction 5.1 Accessories
26	5.2 Bushings
28	5.3 Lifting, moving and jacking facilities
30	5.4 Nameplate
31	5.5 Ground pads 5.6 Polarity, angular displacement, and terminal marking 5.7 Liquid preservation system
34	5.8 Tanks 5.9 Auxiliary cooling equipment
35	5.10 Power supply for transformer auxiliary equipment and controls 5.11 Terminal board 5.12 Junction boxes
36	5.13 Disconnecting switches with interlocks and terminal chambers 5.14 Throat connection 5.15 Current transformers
37	5.16 Surge arresters 5.17 Other insulating liquid
38	5.18 Loading 5.19 On-line monitoring 6. On-load tap changer (OLTC) equipment—basic construction features 6.1 General 6.2 On-Load Tap Changer (OLTC)
39	6.3 Motor and drive mechanism
40	6.4 Position indicator
41	6.5 Control equipment and accessories
47	Annex A (informative) OLTC considerations A.1 Constant and variable flux OLTC applications
50	A.2 Control of the low-voltage voltage
54	Annex B (informative) Bibliography
55	Back cover