IEEE C57.12.36-2017

$37.38

IEEE Standard Requirements for Liquid-Immersed Distribution Substation Transformers

Published By	Publication Date	Number of Pages
IEEE	2017	39

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Description

Revision Standard – Active. Small power transformers have become a significant element in distribution systems supplying large commercial customers like major resort hotels and site-specific industrial customers that desire the local utility to own, operate, and maintain the serving transformer. These transformers can range in sizes from 112.5 kVA to 10 000 kVA with primary voltages at 69 000 V and below and secondary voltages from 34 500 V to 120 V. Transformers in this standard are generally for larger distribution customers often with special voltages or installation requirements like convention centers with large chiller plants and extensive exhibit space. There is often a desire to serve these transformers from underground systems using side-mounted bushings on the primary. This standard seeks to define the small power transformer that is applied as more than just a limited-scope version of the power transformers covered by IEEE Std C57.12.10™ and as more than a large distribution-class transformer covered by IEEE Std C57.12.34™.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std C57.12.36™-2017 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
7	Participants
9	Introduction
10	Contents
11	1. Overview 1.1 Introduction 1.2 Scope 1.3 Mandatory requirements
12	2. Normative references
13	3. Definitions 4. Rating data 4.1 Usual service conditions 4.2 Kilovolt-ampere ratings
14	4.3 Voltage applications 4.4 Standard levels for basic lightning impulse insulation
15	4.5 Taps 4.6 Impedance voltage
16	4.7 Routine tests 4.8 Dielectric test levels 5. Construction 5.1 Accessories
21	5.2 Bushings
23	5.3 Enclosures
24	5.4 Other neutral terminations
25	5.5 Lifting, moving, and jacking facilities
26	5.6 Nameplate
27	5.7 Ground provisions 5.8 Polarity, angular displacement, and terminal markings
28	5.9 Liquid preservation
29	5.10 Tanks 5.11 Auxiliary cooling equipment
31	5.12 Power supply for transformer auxiliary equipment and controls 5.13 Bushing-type current transformers
32	5.14 Surge arresters 5.15 Insulating liquid 5.16 Loading
33	6. Installation and storage
34	Annex A (informative) Substation equipment coordination for secondary unit substations
38	Annex B (informative) Bibliography
39	Back cover