AS 61869.3:2021 pdf free.Instrument transformers Part 3: Additional requirements for inductive voltage transformers (IEC 61869-3:2011 (ED.1.0) MOD).
This part of IEC 61869 applies to new inductive voltage transformers for use with electrical measuring instruments and electrical protective devices at frequencies from 15 Hz to 100 Hz.
NOTE 301 Requirements specific to three-phase voltage transformers are not Included In this standard but. so tar as they are relevant, the requirements in clauses 4 to 10 apply to these Iransformers and a few references to them are included in those clauses (e.g. see 3.1.303, 5.301.1, 5.301.2. 5.5.301, 6.13.301.1 and Table 304).
All the transformers shall be suitable for measuring purposes, but, in addition, certain types may be suitable for protection purposes. Transformers for the dual purpose of measurement and protection shall comply with all clauses of this standard.
2 Normative references
Clause 2 of IEC 61869-1:2007 is applicable with the following additions:
IEC 60028. International Standard of resistance for copper
IEC 60038, IEC standard voltages
IEC 61869-1:2007, Instrument transformers — Part 1: General requirements
3 Terms, definitions and abbreviations
For the purposes of this document, the terms and definitions in IEC 61869-1:2007 apply with the following additions:
3.1 General definitions
3.1.30 1 voltage transformer instrument transformer in which the secondary voltage, in normal conditions of use, is substantially proportional to the primary voltage and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections
(IEC 60050-321:1986, 321-03-01]
3.1.302 unearthed voltage transformer voltage transformer which has all parts of its primary winding, including terminals, insulated from earth to a level corresponding to its rated insulation level
3.1.303 earthed voltage transformer single-phase voltage transformer which is intended to have one end of its primary winding directly earthed or a three-phase voltage transformer which is intended to have the star-point of its primary winding directly earthed
3.1.304 measuring voltage transformer voltage transformer intended to transmit an information signal to measuring instruments, integrating meters and similar apparatus [IEC 60050-321:1986 , 32 1-03-04 modified]AS 61869.3 pdf free download.
Tags: Instrument transformers
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AS/NZS 60335.2.11:2020 pdf free download.Household and similar electrical appliances- Safety Part 2.11: Particular requirements for tumble dryers (IEC 60335-2-11 Ed 8, MOD). 7.10 Addition: If the off position is only indicated by letters, the word “off” shall be used. 7.12 Addition: The instructions shall state — the maximum mass of dry textile material in kilograms to be used in the appliance; — that the tumble dryer is not to be used if industrial chemicals have been used for cleaning; — that the lint trap has to be cleaned frequently, if applicable; — that lint must not to be allowed to accumulate around the tumble dryer (not applicable for appliances intended to be vented to the exterior of the building); — that adequate ventilation has to be provided to avoid the back flow of gases into the room from appliances burning other fuels, including open fires (this instruction is not required if the tumble dryer discharges the air into the room). If symbol ISO 7000-0790 (2004-01) is used, its meaning shall be explained. The instructions shall include the substance of the following. — Do not dry unwashed items in the tumble dryer. — Items that have been soiled with substances such…
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AS ISO 37100:2020 pdf free download.Sustainable cities and communities 一Vocabulary. 1 Scope This document defines terms relating to sustainable development in communities, smart community infrastructure and related subjects. 2 Normative references There are no normative references in this document. 3 Terms and definitions ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at http://www.iso.orgJobp — IEC Electropedia: available at httwwwe1e1ropetha.orgJ 3.1 Terms relating to sustainable development, resilience and smartness 3.1.1 sustainability state of the global system, including environmental, social and economic aspects, in which the needs of the present are met without compromising the ability of future generations to meet their own needs Note I to entry: The environmental, social and economic aspects interact, are interdependent and are often referred to as the three dimensions of sustainability. Note 2 to entry: Sustainability is the goal of sustainable development. [SOURCE: ISO Guide 82:2014, 3.1] 3.1.2 sustainable development development that meets the environmental, social and economic needs of the present without compromising the ability of future generations to meet their own needs Note ito entry: Derived from the Brundtland Report. Note 2 to entry: The Aalborg Charter provides further information on…
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AS ISO 37104:2020 pdf free.Sustainable cities and communities – Transforming our cities一Guidance for practical local implementation of AS IsO 37101. This document provides guidance on how to implement and maintain a management system for sustainable development based on ISO 37101 principles, specifically in the context of cities, but applicable to other forms of settlement. This document: — provides guidance for practical implementation ofa managernentsystem for sustainable development in cities and other settlements, based on ISO 37101; — establishes a methodological framework forthe systematic evaluation ofthe sustainable development schemes and achievements in the city or other settlements, based on the cross-analysis of the six purposes of sustainability and the 12 areas of action of ISO 37101; — illustrates how other International Standards can be used to support successful implementation of ISO 37101, including, in particular, ISO 37120 (which recommends a suite of city indicators mapped against the six purposes of ISO 37101) and ISO 37106 (which provides practical guidance on how to implement joined-up delivery and innovation across organizational boundaries within the city or settlement). This document is intended for organizing bodies, decision-makers, executive officers and managers in cities — usually, in the first instance, the relevant local governments. This document…