IEEE C57.12.51-2008
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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IEEE Standard for Ventilated Dry- Type Power Transformers, 501 kVA and Larger, Three-Phase, with High- Voltage 601 V to 34 500 V; Low- Voltage 208Y/120 V to 4160 V- General Requirements
09-09-2019
English
09-03-2009
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1 Overview
1.1 Scope
1.2 Purpose
2 Normative references
3 Definitions
4 Usual service conditions
5 Ratings and characteristics
5.1 Kilovolt-ampere ratings
5.2 Kilovolt-ampere and voltage ratings
5.3 Taps
5.4 Insulation levels
5.5 Angular displacement and terminal markings
5.6 Percent impedance voltage
6 Construction
6.1 Insulation system
6.2 Accessory location
6.3 Nameplate
6.4 Transformer connections
6.5 Tap changing
6.6 Lifting, jacking, and moving facilities
6.7 Ground pad
6.8 Transformer enclosure
7 Routine tests
8 Tolerances
9 Other ratings and characteristics
9.1 Forced-air-cooled ratings
9.2 40 Degree C average ambient temperature conditions
9.3 Other winding temperature rises
9.4 Other temperature class insulation systems
9.5 Other high-voltage ratings and connections
9.6 Y-Y connected transformers
9.7 Increased neutral insulation
9.8 Other basic lightning impulse insulation levels
10 Other construction
10.1 High-voltage connection arrangements
10.2 Low-voltage connection arrangements
10.3 Surge arresters
10.4 Unit substation application
10.5 Temperature devices
10.6 Forced-air cooling
10.7 Provision for future forced-air cooling
10.8 Space heaters
10.9 Current transformers (or provision for their addition
in the future)
10.10 Terminal blocks
10.11 Contacts
11 Other tests
Annex A (informative) Bibliography
Presents characteristics relating to performance, limited electrical and mechanical interchangeability, as well as safety of the equipment described, and to assist in the proper selection of such equipment.
| Committee |
Transformers
|
| DevelopmentNote |
Supersedes ANSI C57.12.51. (01/2011)
|
| DocumentType |
Standard
|
| Pages |
30
|
| PublisherName |
Institute of Electrical & Electronics Engineers
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| NEMA TR1 : 2013 | TRANSFORMERS, STEP VOLTAGE REGULATORS AND REACTORS |
| UFC 3-550-01 : CHANGE 1 | UNIFIED FACILITIES CRITERIA - EXTERIOR ELECTRICAL POWER DISTRIBUTION |
| IEEE 3001.5-2013 | IEEE Recommended Practice for the Application of Power Distribution Apparatus in Industrial and Commercial Power Systems |
| IEEE C37.121-2012 | GUIDE FOR SWITCHGEAR - UNIT SUBSTATION - REQUIREMENTS |
| IEEE C57.12.70-2011 | IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers |
| IEEE C37.121-2012 REDLINE | IEEE Guide for Switchgear - Unit Substation - Requirements |
| IEEE C57.12.01-2015 REDLINE | IEEE Standard for General Requirements for Dry-Type Distribution and Power Transformers |
| IEEE C57.12.01-2005 | IEEE Standard General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid Cast and/or Resin Encapsulated Windings |
| ANSI C84.1 : 2016 | ELECTRIC POWER SYSTEMS AND EQUIPMENT - VOLTAGE RATINGS (60 HERTZ) |
| IEEE C57.12.70-2011 | IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers |
| IEEE C57.12.91-2011 | IEEE Standard Test Code for Dry-Type Distribution and Power Transformers |
| IEEE C57.94-1982 | IEEE Recommended Practice for Installation, Application, Operation, and Maintenance of Dry-Type General Purpose Distribution and Power Transformers |
| IEEE C57.12.50 : 1981 | REQUIREMENTS FOR VENTILATED DRY-TYPE DISTRIBUTION TRANSFORMERS, 1 TO 500 KVA, SINGLE-PHASE, AND 15 TO 500 KVA, THREE-PHASE, WITH HIGH-VOLTAGE 601 TO 34500 VOLTS, LOW-VOLTAGE 120 TO 600 VOLTS |
| IEEE C57.13-2008 | IEEE Standard Requirements for Instrument Transformers |
| IEEE C57.105-1978 | IEEE Guide for Application of Transformer Connections in Three-Phase Distribution Systems |
| ANSI C57.12.57 : 1987 | AMERICAN NATIONAL STANDARD FOR TRANSFORMERS - VENTILATED DRY-TYPE NETWORK TRANSFORMERS 2500 KVA AND BELOW, THREE-PHASE, WITH HIGH-VOLTAGE 34500 VOLTS AND BELOW, LOW-VOLTAGE 216Y/125 AND 480Y/227 VOLTS - REQUIREMENTS |
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