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1.1 This Standard covers the requirements for guy composite insulators used in guy wires on overhead distribution lines operating at nominal voltages up to and including 75 kV. Guy insulators insulate or isolate guy wires for corrosion protection, higher insulation levels, clearances for maintenance and normal operation, and safety for the public and workers (joint-use). Guy composite insulators…

1.1 This Standard applies to mechanical flue-gas exhausters intended to be installed in a flue pipe, breeching, or chimney and serving appliances burning natural gas, propane, or fuel oil. 1.2 This Standard covers the mechanical and electrical features of mechanical flue-gas exhausters for indoor or outdoor installations. 1.3 This Standard classifies mechanical flue-gas exhausters as: a)…

1.1 This Standard specifies criteria to develop emission reduction practices and programs. 1.2 This Standard addresses fugitive and vented emissions from point sources in the following sectors (see Figure 1) of the upstream oil and gas industry from wells, pipelines, and facilities associated with a) crude oil production and shale oil; b) oil sands – in situ bitumen production, including…

1.1 This Standard applies to wet-process porcelain and toughened glass suspension-type insulators used on ac overhead power lines with a nominal voltage greater than 1000 V and a frequency not greater than 100 Hz. This Standard applies to single insulator units only and does not apply to long rod insulators. 1.2 This Standard specifies provisions for a) the mechanical, electrical, and…

1.1 This Standard covers the requirements for dead-end/suspension composite insulators used on overhead distribution lines operating at nominal voltages up to and including 75 kV. Dead-end insulators support the line conductor horizontally. Suspension insulators support the line conductor vertically. Both are subjected to tensile and torsional loads. These composite insulators are intended to…

1.1 This Standard covers the requirements for line post composite insulators used on overhead distribution lines operating at nominal voltages up to and including 75 kV. Line post insulators support the line conductor horizontally or vertically. They are subjected to tensile, cantilever, and compressive loads. These composite insulators are intended to operate in a service environment within a…

IEC TS 62257-9-5:2016 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 TS 62257-9-5:2016(E) applies to stand-alone rechargeable electric lighting appliances or kits that can be…

IEC TS 62257-9-5:2016(E) applies to stand-alone rechargeable electric lighting appliances or kits that can be installed by a typical user without employing a technician. It presents a quality assurance framework that includes product specifications, test methods, and standardized specification sheets. This new edition includes the following significant technical changes with respect to the…

ISO 18221:2016 specifies the minimum information to be provided to the user by the manufacturers of microscopes with digital displays regarding imaging performance. It further specifies terms and definitions for describing the optical performance of the digital imaging path of microscopy systems including the observation of the image on digital displays. NOTE Terms and definitions for…

ISO 4301-1:2016 establishes a general classification of cranes and mechanisms based on the service conditions, mainly expressed by the following: - the total number of working cycles to be carried out during the specified design life of the crane; - the load spectrum factor which represents the relative frequencies of loads to be handled; - the average displacements.   Additional information for…