Rechercher

IEC TS 62788-7-2:2017(E) defines test procedures to characterize the weatherability of polymeric component materials used in photovoltaic (PV) modules or systems. The methods in this document have been focused on polymeric backsheets and encapsulants, but may be applied to other materials; however, these were not verified as part of the preparation. Exposures in this document are intended for…

IEC TS 63049:2017(E) provides the minimum activities deemed necessary to implement an effective quality assurance program for the managing and reducing of risk in the installation and operation of photovoltaic (PV) systems. This document defines requirements for certifying that an entity has and uses a quality assurance program to prevent, or reduce errors and learns from any new errors in…

ISO 25178-71:2017 defines Type S1 and Type S2 software measurement standards (etalons) for verifying the software of measuring instruments. It also defines the file format of Type S1 software measurement standards for the calibration of instruments for the measurement of surface texture by the areal method as defined in the areal surface texture chain of standards, chain link G. NOTE…

1.1 Introduction 1.1.1 The purpose of this standard is to provide minimum requirements for the design, construction, and marking of electrical equipment or parts of such equipment for use in Class I and Class II, Division 2 and Class III, Divisions 1 and 2 hazardous (classified) locations. 1.1.2 This equipment, in normal operation, is not capable of causing ignition of the surrounding…

1.1 This Standard applies to surge protective device (SPD) components designed to mitigate the effects of transient overvoltages and surge events and intended for use in surge protective devices (SPDs) or in non-SPD applications. 1.2 SPD Components containing integral thermal devices are within the scope of this Standard. 1.3 Components include but are not limited to metal oxide varistors (…

This clause of Part 1 is replaced by the following. This part of IEC 60335 deals with the safety of electric HEAT PUMPS, including SANITARY HOT WATER HEAT PUMPS, AIR-CONDITIONERS, and DEHUMIDIFIERS incorporating motor-compressors and hydronic room FAN COILS, their maximum RATED VOLTAGES being not more than 250 V for single phase appliances and 600 V for all other appliances. 1DV.1 DR…

This clause of Part 1 is replaced by the following. This International Standard deals with the safety of powered ride-on and powered WALK-BEHIND MACHINES intended for commercial indoor or outdoor use for the following applications: – sweeping, – scrubbing, – wet or dry pick-up, – polishing, – application of wax, sealing products and powder based detergents, – shampooing of floors with an…

1.1 General This Standard covers wrought steel buttwelding fittings, including extruded headers and factory-made induction or cold bends, primarily intended for use in oil or gas pipeline systems. 1.2 Size, grade, and category 1.2.1 Size This Standard covers fittings in sizes from NPS 1/2 to NPS 60. (See Table A.1.) ? 1.2.2 Grade For other than sour service, this Standard covers fittings…

1.1 This Standard applies to newly produced, automatic storage water heaters having input ratings of 75,000 Btu/hr (21 980 W) or less (see Clause 3, Definitions), hereinafter referred to as water heaters or appliances, constructed entirely of new, unused parts and materials: a) for use with natural gas; b) for use with manufactured gas; c) for use with mixed gas; d) for use with…

1.1 This Standard applies to newly produced, large automatic storage water heaters having input ratings above 75,000 Btu/hr (21 980 W), instantaneous water heaters, circulating water heaters including booster water heaters (see Clause 3, Definitions), hereinafter referred to as water heaters or appliances, constructed entirely of new, unused parts and materials: a) for use with natural gas; b…