IEEE DRAFT C57.12.00 : D4 98
Withdrawn
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DRAFT STANDARD GENERAL REQUIREMENTS FOR LIQUID-IMMERSED DISTRIBUTION, POWER, AND REGULATING TRANSFORMERS
09-11-2023
12-01-2013
1. Overview
1.1 Scope
1.2 Word Usage
2. Terminology
3. Definitions
4. Service conditions
4.1 Usual service conditions
4.2 Loading at other than rated conditions
4.3 Unusual service conditions
5. Rating data
5.1 Cooling classes of transformers
5.2 Frequency
5.3 Phases
5.4 Rated kilovoltamperes
5.5 Voltage ratings and taps
5.6 Connections
5.7 Polarity, angular displacement, and terminal markings
5.8 Impedance
5.9 Total losses
5.10 Insulation levels
5.11 Temperature rise and loading conditions
5.12 Nameplates
6. Construction
6.1 Bushings
6.2 Transformer Accessories
6.3 Bushing current transformers
6.4 Thermometer Wells
6.5 Tank pressure requirements
6.6 Liquid insulation system
6.7 Grounding
6.8 Minimum external clearances between transformer live
parts of different phases of the same voltage
7. Short circuit characteristics
7.1 Requirements
7.2 Components
7.3 Base kilovoltamperes
7.4 Calcuation of winding temperature during a short circuit
8. Testing and Calculations
8.1 General
8.2 Routine, Design, and Other Tests for Transformers
8.3 Additional Routine Tests on Transformers with load
tap changing or regulating transformers
8.4 Determination of transformer regulation
9. Tolerances
9.1 Tolerances for Ratio
9.2 Tolerances for Impedance
9.3 Tolerances for Losses
9.4 Accuracies Required for Measuring Losses
10 Connection of Transformers for Shipment
Annex A Bibliography
Establishes the safety requirements, performance and limited electrical and mechanical interchangeability of the equipment described and the proper selection of such equipment including autotransformers, power transformers and regulating transformers.
| DocumentType |
Draft
|
| PublisherName |
Institute of Electrical & Electronics Engineers
|
| Status |
Withdrawn
|
| SupersededBy |
| IEEE 32-1972 | IEEE Standard Requirements, Terminology, and Test Procedures for Neutral Grounding Devices |
| IEEE C57.12.20-2011 | TRANSFORMERS - STANDARD FOR OVERHEAD TYPE DISTRIBUTION TRANSFORMERS, 500 KVA AND SMALLER: HIGH VOLTAGE, 34500 VOLTS AND BELOW: LOW VOLTAGE, 7970/13800Y VOLTS AND BELOW |
| IEEE C57.19.01-2000 | IEEE Standard Performance Characteristics and Dimensions for Outdoor Apparatus Bushings |
| IEEE C57.91-2011 REDLINE | IEEE Guide for Loading Mineral-Oil-Immersed Transformers and Step-Voltage Regulators |
| IEEE C57.12.90-2010 | IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers |
| IEEE 4-2013 | IEEE Standard for High-Voltage Testing Techniques |
| IEEE 315 : 1975 | GRAPHIC SYMBOLS FOR ELECTRICAL AND ELECTRONICS DIAGRAMS (INCLUDING REFERENCE DESIGNATION LETTERS) |
| ANSI C84.1 : 2016 | ELECTRIC POWER SYSTEMS AND EQUIPMENT - VOLTAGE RATINGS (60 HERTZ) |
| IEEE C57.92-1981 | IEEE Guide for Loading Mineral-Oil-Immersed Power Transformers Up to and Including 100 MVA with 55 C or 65 C Average Winding Rise |
| IEEE C57.12.70-2011 | IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers |
| IEEE C57.131-2012 | IEEE Standard Requirements for Tap Changers |
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