https://yse.yabesh.ir/std/handle/yse/127 2026-05-06T18:17:00Z 2026-05-06T18:17:00Z IEC - International Electrotechnical Commission https://yse.yabesh.ir/std/handle/yse/289190 2020-09-20T06:45:44Z 2019-01-01T00:00:00Z

English -- Thermal-links – Requirements and application guide - Edition 4.1; Consolidated Reprint; IEC 60691 IEC - International Electrotechnical Commission Scope: This International Standard is applicable to thermal-links intended for incorporation in electrical appliances, electronic equipment and component parts thereof, normally intended for use indoors, in order to protect them against excessive temperatures under abnormal conditions. NOTE 1 The equipment is not designed to generate heat. NOTE 2 The effectiveness of the protection against excessive temperatures logically depends upon the position and method of mounting of the thermal-link, as well as upon the current which it is carrying. This standard may be applicable to thermal-links for use under conditions other than indoors, provided that the climatic and other circumstances in the immediate surroundings of such thermal-links are comparable with those in this standard. This standard may be applicable to thermal-links in their simplest forms (e.g. melting strips or wires), provided that molten materials expelled during function cannot adversely interfere with the safe use of the equipment, especially in the case of hand-held or portable equipment, irrespective of its position. Annex H of this standard is applicable to thermal-link packaged assemblies where the thermal-link(s) has already been approved to this standard but packaged in a metallic or nonmetallic housing and provided with terminals/wiring leads. This standard is applicable to thermal-links with a rated voltage not exceeding 690 V a.c. or d.c. and a rated current not exceeding 63 A. The objectives of this standard are: a) to establish uniform requirements for thermal-links, b) to define methods of test, c) to provide useful information for the application of thermal-links in equipment. This standard is not applicable to thermal-links used under extreme conditions such as corrosive or explosive atmospheres. This standard is not applicable to thermal-links to be used in circuits on a.c. with a frequency lower than 45 Hz or higher than 62 Hz.

2019-01-01T00:00:00Z IEC - International Electrotechnical Commission https://yse.yabesh.ir/std/handle/yse/289191 2020-09-20T06:45:44Z 2019-01-01T00:00:00Z

French -- Dispositifs à semiconducteurs – Méthodes d’essais mécaniques et climatiques – Partie 18: Rayonnements ionisants (dose totale) - Edition 2.0|English -- Semiconductor devices – Mechanical and climatic test methods – Part 18: Ionizing radiation (total dose) - Edition 2.0; IEC 60749-18 IEC - International Electrotechnical Commission Scope: This part of IEC 60749 provides a test procedure for defining requirements for testing packaged semiconductor integrated circuits and discrete semiconductor devices for ionizing radiation (total dose) effects from a cobalt-60 (60Co) gamma ray source. Other suitable radiation sources can be used. There are four tests presented in this procedure: a) a standard room temperature irradiation test; b) an irradiation at elevated temperature/cryogenic temperature test; c) an accelerated annealing test; d) an enhanced low dose rate sensitivity (ELDRS) test. The accelerated annealing test estimates how dose rate ionizing radiation effects on devices is important for low dose rate or certain other applications in which devices can exhibit significant time-dependent effects. The ELDRS test determines if devices with bipolar linear components exhibit sensitivity to enhanced radiation-induced damage at low dose rates. This document addresses only steady-state irradiations, and is not applicable to pulse type irradiations. It is intended for military- and aerospace-related applications. This document can produce severe degradation of the electrical properties of irradiated devices and thus is considered a destructive test.

2019-01-01T00:00:00Z IEC - International Electrotechnical Commission https://yse.yabesh.ir/std/handle/yse/289189 2020-09-20T06:45:44Z 2019-01-01T00:00:00Z

French -- Connecteurs pour équipements électriques et électroniques – Essais et mesures – Partie 11-1: Essais climatiques – Essai 11a – Séquence climatique - Edition 2.0|English -- Connectors for electrical and electronic equipment – Tests and measurements – Part 11-1: Climatic tests – Test 11a – Climatic sequence - Edition 2.0; IEC 60512-11-1 IEC - International Electrotechnical Commission Scope: This part of IEC 60512, when required by the detail (product) specification, is used for testing connectors within the scope of IEC technical committee 48. This test may also be used for similar devices (i.e. when the degradation mechanisms are the same) when specified in a detail (product) specification. The object of this test is to define a standard test method to assess the ability of connectors to function in a specified manner, in a specified environment which might be encountered during normal use, including storage. This document provides a standard composite test method for determining the suitability of connectors when subjected to environmental conditions consisting of a sequence of temperature, humidity and, where required, low air pressure environmental stresses. The order of application of the stresses and the conditions for the change from one step to the next have been chosen to accelerate, amplify and allow potential interactions of degradation mechanisms of the same type as those observed under natural climatic conditions. In this composite test, connector specimens are exposed to environmental tests in a standard order and categorized according to their climatic category as assigned by the detail (product) specification, except that the third group of digits is used as an indication of the number of cycles in step 5 of the damp heat cyclic test according to IEC 60512-11-12. Where any modification is necessary, the relevant connector detail (product) specification provides the necessary information for each step in the method. This test is frequently specified to follow other tests involving mechanical stress, for example tests for robustness of terminations, solderability, shock and vibration, as a means of determining whether the sealing of the specimen has been damaged.

2019-01-01T00:00:00Z IEC - International Electrotechnical Commission https://yse.yabesh.ir/std/handle/yse/289188 2020-09-20T06:45:44Z 2019-01-01T00:00:00Z

French -- Systèmes de génération d'énergie éolienne – Partie 26-1: Disponibilité des systèmes de génération d'énergie éolienne - Edition 1.0|English -- Wind energy generation systems – Part 26-1: Availability for wind energy generation systems - Edition 1.0; IEC 61400-26-1 IEC - International Electrotechnical Commission Scope: This part of IEC 61400 defines an information model from which time-based, and production-based availability indicators for services can be derived and reported. The purpose is to provide standardised metrics that can be used to create and organise methods for availability calculation and reporting according to the user’s needs. The document provides information categories, which unambiguously describe how data is used to characterise and categorise the operation. The information model specifies category priority for discrimination between possible concurrent categories. Further, the model defines entry and exit criteria to allocate fractions of time and production values to the proper information category. A full overview of all information categories, exit and entry criteria is given in Annex A. The document can be applied to any number of WTGSs, whether represented by an individual turbine, a fleet of wind turbines, a wind power station or a portfolio of wind power stations. A wind power station is typically made up of all WTGSs, functional services and balance of plant elements as seen from the point of common coupling. Examples are provided in informative annexes which provide guidelines for calculation of availability indicators: • examples of optional information categories, Annex B; • examples of application of the information categories for determination of availability, Annex C; • examples of application scenarios, Annex D; • examples on methods for determination of potential production, Annex E; • examples of how to expand the model to balance of plant elements, Annex F. This document does not prescribe how availability indicators shall be calculated. The standard does not specify the method of information acquisition, how to estimate the production terms or to form the basis for power curve performance measurements – which is the objective of IEC 61400-12. A degree of uncertainty is inherent in both the measurement of a power curve and the calculation of potential energy production. The stakeholders should agree upon acceptable uncertainty parameters.                    

2019-01-01T00:00:00Z