CAN/CSA-C2-M91 (R2003)
Single-Phase and Three-Phase Distribution Transformers, Types ONAN and LNAN
Product Details
Preface
This is the eighth edition of CSA Standard CAN/CSA—C2, Single-Phase and Three-Phase Distribution Transformers, Types ONAN and LNAN, and supersedes the seventh edition issued in 1982. It is written in SI (metric) units.
This edition brings CSA Standard C2 in line with present practices.
Included in this edition are requirements for single—phase transformers rated 1000 kV A and less, and three—phase transformers rated 3000 kV A and less, in insulation class 34.5 kV and less.
This Standard specifies the requirements for distribution transformers intended primarily for operation by electric utilities. The operation of transformers complying with this Standard, by other than an electric utility, may be subject to additional requirements by the electrical inspection regulatory authority.
This Standard was prepared by the Technical Committee on Distribution Transformers, under the jurisdiction of the Standards Steering Committee for Electrical Engineering Standards, and was formally approved by these Committees. It has been approved as a National Standard of Canada by the Standards Council of Canada.
Scope
1.1
This Standard specifies the requirements for distribution transformers intended primarily for operation by electric utilities.
Note: The operation of transformers complying with this Standard, by other than an electric utility, may be subject to additional requirements by the electrical inspection authority having jurisdiction under Part I of the Canadian Electrical Code.
1.2
This Standard applies to single- and three-phase, 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.
1.3
This Standard includes voltage ratings, kV·A ratings, certain mechanical characteristics, and test procedures. Also included are the following performance characteristics: temperature rise, loading capabilities, sound level, and radio influence voltage (RIV).
1.4
This Standard also applies to self-protected transformers, except for the protective equipment.
1.5
Except as specified by other CSA Standards this Standard does not apply to auto-, testing, dry-type, welding, furnace, rectifier, network, pad-mounted, subway-type, or special-purpose transformers, or to step-voltage regulators.
1.6
Transformers built in accordance with this Standard shall meet the quality requirements of CSA Standard CAN3-Z299.3.
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