• There are no items in your cart

CSA C2 : 0

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

SINGLE-PHASE AND THREE-PHASE DISTRIBUTION TRANSFORMERS, TYPES ONAN AND LNAN
Available format(s)

Hardcopy , PDF

Superseded date

07-12-2021

Language(s)

English

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Superseded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

C22.1-15 Canadian Electrical Code, Part I (23rd Edition), Safety Standard for Electrical Installations
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

View more information
US$55.00
Excluding Tax where applicable

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.