IEEE C57.12.20-2011
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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TRANSFORMERS - STANDARD FOR OVERHEAD TYPE DISTRIBUTION TRANSFORMERS, 500 KVA AND SMALLER: HIGH VOLTAGE, 34500 VOLTS AND BELOW: LOW VOLTAGE, 7970/13800Y VOLTS AND BELOW
Hardcopy , PDF
23-07-2013
English
01-01-2011
1 Scope
2 Referenced and related publications
2.1 Referenced American National Standards
2.2 Related publications
3 Ratings
3.1 Kilovolt-ampere ratings
3.2 Voltage ratings and tap ratings
4 Basic lightning impulse insulation levels and dielectric
test levels
5 Tests
5.1 General
5.2 Dielectric tests
6 Construction
6.1 Bushings and terminals
6.2 Accessory equipment
6.3 Polarity, terminal markings, and angular displacement
6.4 Oil preservation
6.5 Tanks
7 Storage and installation
7.1 Storage
7.2 Installation
8 Design tests for fault current capability of overhead
distribution transformer enclosures
8.1 Objective
8.2 Definitions
8.3 General requirements
8.4 Tests
8.5 Test number 1 - an arcing fault in an enclosure
8.6 Test number 2 - for enclosures with internal fusible
elements
8.7 Test results
Annex A (informative) Informational
Ascertains the performance, interchangeability, and safety of the equipment covered, and also assists in the proper selection of such equipment.
| DocumentType |
Standard
|
| Pages |
55
|
| PublisherName |
Institute of Electrical & Electronics Engineers
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| IEEE 141 : 1993 | IEEE Recommended Practice for Electric Power Distribution for Industrial Plants |
| IEEE DRAFT C57.12.21 : D12 MAY 92 | DRAFT REQUIREMENTS FOR PAD-MOUNTED, COMPARTMENTAL-TYPE, SELF-COOLED, SINGLE-PHASE DISTRIBUTION TRANSFORMERS WITH HIGH VOLTAGE BUSHINGS; HIGH VOLTAGE, 34500 GRDY/19920 VOLTS AND BELOW; LOW VOLTAGE, 240/120 VOLTS; 16 KVA AND SMALLER |
| IEEE DRAFT C57.12.00 : D4 98 | DRAFT STANDARD GENERAL REQUIREMENTS FOR LIQUID-IMMERSED DISTRIBUTION, POWER, AND REGULATING TRANSFORMERS |
| CSA C2 : 0 | SINGLE-PHASE AND THREE-PHASE DISTRIBUTION TRANSFORMERS, TYPES ONAN AND LNAN |
| IEEE C57.109-1993 | IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration |
| ANSI C57.12.25 : 1990 | TRANSFORMERS - PAD-MOUNTED, COMPARTMENTAL-TYPE, SELF-COOLED, SINGLE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE INSULATED HIGH-VOLTAGE CONNECTORS; HIGH VOLTAGE, 34 500 GRDY/19 920 VOLTS AND BELOW; LOW VOLTAGE, 240/120 VOLTS; 167 KVA AND SMALLER - REQUIREMENTS |
| ANSI C57.12.29 : 2014 | SWITCHGEAR AND TRANSFORMERS - PAD-MOUNTED EQUIPMENT - ENCLOSURE INTEGRITY FOR COASTAL ENVIRONMENTS |
| ANSI C57.12.27 : 1982 | LIQUID-FILLED DISTRIBUTION TRANSFORMERS USED IN PAD-MOUNTED INSTALLATIONS INCLUDING UNIT SUBSTATIONS CONFORMANCE STANDARD FOR, |
| IEEE 602 : 2007 | ELECTRIC SYSTEMS IN HEALTH CARE FACILITIES |
| IEEE DRAFT C57.12.23 : 1992 | TRANSFORMERS - UNDERGROUND-TYPE, SELF-COOLED, SINGLE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE, INSULATED, HIGH-VOLTAGE CONNECTORS; HIGH VOLTAGE (24 940 GRDY/14 400 V AND BELOW) AND LOW VOLTAGE (240/120 V, 167 KVA AND SMALLER) |
| IEEE DRAFT C57.12.29 : D1.5 2004 | PAD-MOUNTED EQUIPMENT - ENCLOSURE INTEGRITY FOR COASTAL ENVIRONMENTS |
| IEEE 295 : 1969 | STANDARD FOR ELECTRONIC POWER TRANSFORMERS |
| IEEE 241 : 1990 | ELECTRIC POWER SYSTEMS IN COMMERCIAL BUILDINGS |
| IEEE DRAFT C57.12.90 : D5.1 98 | DRAFT STANDARD TEST CODE FOR LIQUID-IMMERSED DISTRIBUTION, POWER, AND REGULATING TRANSFORMERS |
| IEEE DRAFT C57.12.22 : D4 JUL 93 | PAD-MOUNTED, COMPARTMENTAL-TYPE, SELF COOLED THREE PHASE DISTRIBUTION TRANSFORMERS WITH HIGH-VOLTAGE BUSHINGS, 2500 KVA AND SMALLER: HIGH VOLTAGE, 34 500 GRDY/19 920 VOLTS AND BELOW; LOW VOLTAGE, 480 VOLTS AND BELOW |
| IEEE 1388-2000 | IEEE Standard for the Electronic Reporting of Transformer Test Data |
| NEMA TR1 : 2013 | TRANSFORMERS, STEP VOLTAGE REGULATORS AND REACTORS |
| NEMA MG 2:2014 | Safety Standard for Construction and Guide for Selection, Installation and Use of Electric Motors and Generators |
| ANSI C135.1 : 1999 | ZINC-COATED STEEL BOLTS AND NUTS FOR OVERHEAD LINE CONSTRUCTION |
| IEEE C57.12.00-2015 | IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers |
| 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 C37.40-2003 | IEEE Standard Service Conditions and Definitions for High-Voltage Fuses, Distribution Enclosed Single-Pole Air Switches, Fuse Disconnecting Switches, and Accessories |
| IEEE C57.12.70-2011 | IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers |
| IEEE C37.41-2008 REDLINE | IEEE Standard Design Tests for High-Voltage (>1000 V) Fuses, Fuse and Disconnecting Cutouts, Distribution Enclosed Single-Pole Air Switches, Fuse Disconnecting Switches, and Fuse Links and Accessories Used with These Devices |
| MIL-STD-209 Revision K:2005 | LIFTING AND TIEDOWN PROVISIONS |
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