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1 Scope This clause of Part 1 is replaced by the following: This International Standard deals with the safety of the following appliances, their RATED VOLTAGE being not more than 250 V for single-phase appliances, 480 V for other appliances and 24 V DC for appliances when battery operated: – REFRIGERATING APPLIANCES for household and similar use; – ICE-MAKERS incorporating a motor-…

1.1 These requirements cover heat-actuated, single and multiple station heat alarms intended for indoor installation in accordance with: a) In Canada: 1) The National Building Code of Canada, 2) The National Fire Code of Canada, b) In the United States: 3) The National Fire Alarm and Signaling Code, NFPA 72

IEC 62055-31:2022 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 62055-31:2022 edition 2.0 and the previous IEC 62055-31:2005 edition 1.0. Furthermore, comments from IEC TC 13 experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the…

IEC 62055-31:2022 applies to newly manufactured, static watt-hour payment meters of accuracy classes 0,5, 1 and 2 for direct connection, for the measurement of alternating current electrical energy consumption of a frequency in the range 45 Hz to 65 Hz that include a supply control switch for the purpose of interruption or restoration of the electricity supply to the load in accordance with the…

This document specifies the general aspects of short glass fibre reinforced polyethylene (PE-sGF) piping systems, manufactured by the spiral cross winding method, which are used below ground for the conveyance of liquid fluids for the following industrial and agricultural uses: —    chemical plants; —    industrial sewerage engineering; —    power engineering (cooling and general-purpose water…

This document is applicable to short glass fibre reinforced polyethylene (PE-sGF) pipes manufactured by the spiral cross winding method, which are used below ground for the conveyance of liquid fluids for the following industrial and agricultural uses: —    chemical plants; —    industrial sewerage engineering; —    power engineering (cooling and general-purpose water supply); —    agricultural…

1.1 These requirements apply to low voltage luminaire systems whose electrical power is derived from photovoltaic modules. Systems include, at a minimum, a photovoltaic (PV) module, storage batteries, one or more co-located luminaires, and controls to manage the energy flow between these subassemblies. These systems are intended to be installed in accordance with: a) CSA C22.1, the Canadian…

IEC TR 61000-1-4:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC TR 61000-1-4:2022 which is a technical report, reviews the sources and effects of power frequency conducted…

IEC TR 61000-1-4:2022 which is a technical report, reviews the sources and effects of power frequency conducted harmonic current emissions in the frequency range up to 2 kHz on the public electricity supply, and gives an account of the reasoning and calculations leading to the existing emission limits for equipment in the editions of IEC 61000-3-2, up to and including the fifth edition (2018)…

1.1 These requirements cover check valves of 1 NPS and larger, used in piping systems supplying water for fire protection service. 1.2 The check valves covered by these requirements are intended for installation and use in accordance with the Standards for: a) Low-, Medium-, and High-Expansion Foam, NFPA 11; b) Installation of Sprinkler Systems, NFPA 13; c) Installation of Standpipe and…