Preface This is the third edition of CSA C381.2, Energy performance of battery-charging systems and uninterruptible power supplies. It supersedes the previous editions published in 2014 and 2008 under the title, Test method for determining the energy efficiency of battery-charging systems. This Standard specifies requirements, definitions, and test methods for determining the energy performance of battery-charging systems. The Harmonization Committee intended that this Standard would harmonize with Appendix Y to Subpart B, Part 430 of Title 10 to the United States Code of Federal Regulations, entitled "Uniform Test Method for Measuring the Energy Consumption of Battery Chargers". CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of Natural Resources Canada (NRCan), BC Hydro, Hydro-Québec, Manitoba Hydro, and the Canadian Electricity Association.
Scope 1.1 General This Standard covers the test requirements used to measure battery charger energy consumption for battery chargers intended to be operated from 115 V ac, 60 Hz line voltage connected by plug to wall receptacles or existing dc sources (such as automotive power jacks or USB ports). Uninterruptible power supplies that utilize the standardized National Electrical Manufacturer Association (NEMA) plug, 1-15P or 5-15P, as specified in ANSI/NEMA WD 6-2016 and have an ac output are included in the scope. 1.2 Purpose The test method specified in this Standard is intended to complement the methodology contained in CSA C381.1. This Standard and CSA C381.1 define two classifications of products for the purpose of energy-performance testing; products within the scope of CSA C381.1 are not intended to be tested by this Standard. Annex B specifies requirements for determining the appropriate test method (CSA C381.1 or this Standard) for measuring a product's energy performance. 1.3 Exclusions The following are not covered by this Standard: a) a "medical device" as defined in Section 1 of the Canadian Medical Devices Regulations; b) back-up battery chargers; and c) dc output uninterruptible power supply (UPS). 1.4 Terminology In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; "may" is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
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