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Scope 1.1 These requirements apply to factory-built gas-fired package boilers having input ratings of more than 400,000 Btu/h (117,228 W), per individual combustion chamber, having the following: a) For the United States: Inlet/supply pressures up to 15 psi (103 kPa), and intended primarily for commercial and industrial installation; b) For Canada: Inlet/supply gas pressures ?0.5 psi (3.4…

IEC 60352-9:2024 provides guidelines for welding and testing of ultrasonically welded connections and includes requirements, tests and practical guidance information. Ultrasonic welding is a form of cold friction welding that is becoming increasingly popular in many industries. This type of welding uses ultrasonic vibration to join materials together, creating a bond that is both strong and…

IEC 61169-10:2024, which is a sectional specification (SS), provides information and rules for the preparation of detail specifications (DS) for series SMB RF coaxial connectors with snap-on coupling with a characteristic impedance of 50 Ω. This document prescribes mating face dimensions for high performance connectors – grade 2, dimensional details of standard test connectors − grade 0, gauging…

IEC 60335-2-64:2021+AMD1:2024 CSV deals with the safety of electrically operated commercial kitchen machines, their rated voltage being not more than 250 V for single phase appliances connected between one phase and neutral, and 480 V for other appliances including direct current (DC) supplied appliances and battery operated appliances. These appliances are not intended for household and similar…

This document specifies a method for the determination of sulfur dioxide (SO2) in flue gases of stationary sources and describes the fundamental structure and the key performance characteristics of automated measuring systems. The method allows continuous monitoring with permanently installed measuring systems of SO2 emissions. This document describes extractive systems and in situ (non-…

IEC 60939-3:2024 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 60939-3:2024 covers passive filters used to attenuate unwanted radio-frequency signals (such as noise or…

IEC 60939-3:2024 covers passive filters used to attenuate unwanted radio-frequency signals (such as noise or interference) generated from electromagnetic sources. Both single and multi-channel filters within one enclosure or which are built on a printed circuit board forming a compact entity are included within the scope of this document. This document applies to passive filter units for…

L’IEC 60939-3:2024 couvre les filtres passifs utilisés pour atténuer les signaux aux fréquences radioélectriques indésirables (par exemple, le bruit ou le brouillage) générés par des sources électromagnétiques. Les filtres à voie unique et à voies multiples à l’intérieur d’une enveloppe, ou montés sur une carte de circuit imprimé qui forme une entité compacte, font partie du domaine d’application…

IEC 61970-457:2024 specifies a standard interface for exchanging dynamic model information needed to support the analysis of the steady state stability (small-signal stability) and/or transient stability of a power system or parts of it. The schema(s) for expressing the dynamic model information are derived directly from the CIM, more specifically from IEC 61970-302. The scope of this document…

This document specifies requirements for vascular device-drug combination products (VDDCPs). With regard to safety, this document outlines requirements for intended performance, design attributes, materials, design evaluation, manufacturing, sterilization, packaging and information supplied by the manufacturer. For implanted products, this document is intended to be used as a supplement to ISO …