CSA C2 : 0
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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SINGLE-PHASE AND THREE-PHASE DISTRIBUTION TRANSFORMERS, TYPES ONAN AND LNAN
Hardcopy , PDF
12-07-2021
English
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Technical Committee on Distribution Transformers
Preface
1 Scope
2 Definitions
3 Reference Publications
4 Electrical Characteristics
4.1 KV.A Ratings
4.2 Temperature Rise
4.3 Loading Capabilities
4.4 Off-Circuit Voltage taps
4.5 Insulation Class and Preferred Voltages
4.6 Operating Voltage Range
4.7 Radio Interference
4.8 Sound Level
4.9 Short-Circuit Capabilities
5 Electrical Connection and Designation
5.1 Basic Construction
5.2 Grounding
6 Terminals and Bushings
6.1 Terminals, General
6.2 Bushings, General
6.3 Terminals, Single-Phase Transformers
6.4 Terminals, Three-Phase Transformers
6.5 External Clearances
7 Tap Changers
7.1 Application
7.2 Rating
7.3 Marking
8 Mechanical Characteristics
8.1 Construction
8.2 Tank Operating Pressure
8.3 Pressure Relief
8.4 Floor Installation
8.5 Pole Mounting
8.6 Lifting
8.7 Gaskets
8.8 Handhole
8.9 Space Below Secondary Bushings
8.10 Liquid Insulant
8.11 Exterior Finish
8.12 Hardware
9 Tests
9.1 General
9.2 Routine Tests
9.3 Tolerances for Routine Tests
9.4 Type Tests
9.5 Dielectric Tests
9.6 Temperature Rise
9.7 Short-Circuit Tests
10 Markings
10.1 Nameplate and Connection Diagram
10.2 Warning Labels
10.3 Tank Markings
11 Accessories
12 Optional Items
Tables
Figures
Appendix A - Mounting Bracket Test
Specifies the requirements for distribution transformers intended primarily for operation by electric utilities. Applies to single and three-phase transformers , 60 Hz, liquid-filled, distribution transformers, Types ONAN and LNAN, rated at 1000 kV A or below for single-phase and at or below 3000 kV A for three-phase insulation class 34.5 kV and less.
| DocumentType |
Standard
|
| Pages |
55
|
| PublisherName |
Canadian Standards Association
|
| Status |
Superseded
|
| SupersededBy |
| CSA C71.1 : 1999 | INSULATION CO-ORDINATION - PART 1: DEFINITIONS, PRINCIPLES AND RULES |
| 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 |
| CAN/CSA-C50-14 (R2018) | Mineral insulating oil, electrical, for transformers and switches |
| IEEE C57.91-2011 REDLINE | IEEE Guide for Loading Mineral-Oil-Immersed Transformers and Step-Voltage Regulators |
| IEC 60076-4:1976 | Power transformers - Part 4: Tappings and connections |
| IEEE C57.12.90-2010 | IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers |
| 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 |
| CSA Z299.3 : 1985 | QUALITY ASSURANCE PROGRAM - CATEGORY 3 |
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