CSA C2 : 0

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.