TR 60870-6-1-1995 Telecontrol equipment and systems Part 6: Telecontrol protocols compatible with ISO standards and ITU-T recommendations - Section 1: Application context and organization of standards (Edition 1.0)
Matériels et systèmes de téléconduite - Partie 6: Protocoles de téléconduite compatibles avec les normes ISO et les recommandations de l?UIT-T - Section 1: Contexte applicatif et organisation des normes (Edition 1.0)
Telecontrol equipment and systems Part 6: Telecontrol protocols compatible with ISO standards and ITU-T recommendations - Section 1: Application context and organization of standards (Edition 1.0) 是非强制性国家标准，您可以免费下载前三页
"1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international cooperation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities@ the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International@ governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters@ prepared by technical committees on which all the National Committees having a special interest therein are represented@ express@ as nearly as possible@ an international consensus of opinion on the subjects dealt with. 3) They have the form of recommendations for international use published in the form of standards@ technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification@ IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. The main task of IEC technical committees is to prepare International Standards. In exceptional circumstances@ a technical committee may propose the publication of a technical report of one of the following types: ?? type 1@ when the required support cannot be obtained for the publication of an International Standard@ despite repeated efforts; ?? type 2@ when the subject is still under technical development or where for any other reason there is the future but not immediate possibility of an International Standard; ?? type 3@ when a technical committee has collected data of a different kind from that which is normally published as an International Standard@ for example ""state of the art"". Technical reports of types 1 and 2 are subject to review within three years of publication to decide whether they can be transformed into International Standards. Technical reports of type 3 do not necessarily have to be reviewed until the data they provide are considered to be no longer valid or useful. IEC 870-6-1 which is a technical report of type 3@ has been prepared by IEC technical committee 57: Power system control and associated communications. The objective of this report is to define the application context and the organization of standards in the field of telecontrol protocols compatible with ISO and ITU-T publications. The chapter ""Introduction"" of this report gives an overall presentation of the documents. This.report is a Technical Report of type 3 and is of a purely informative nature. It is not to be regarded as an International Standard."