Surge protective devices connected to low-voltage power systems-Requirements and test methods

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9) Attention is drawn to the possibility that some of the elements of this IC Publication may be the subject of patent rights. IC shall not be held responsible for identifying any or all such patent rights. International Standard IC 61643-11 has been prepared by subcommittee 37A: Low-voltage surge protective devices, of IC technical committee 37: Surge arresters. This first edition of IC 61643-11 cancels and replaces the second edition of IC 61643-1 published in 2005. This edition constitutes a technical revision. The main changes with respect of the second edition of IC 61643-1 are the complet restructuring and improvement of the test procedures and test sequences.

The text of this standard is based on the following documents:

Full information on the voling for the approval of this standard can be found in the report on voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61643 series can be found, under the general title Low-voltage surge protective devices, on the IEC website.

The committee has decided that the contents of this publication will remain unchanghed until the stability date indicated on the IEC web site under "http:/webstore.iec.ch" in the dala related to the specific publication. At this date, the publication will be

·reconfirmed.
·withdrawn,
·replaced by a revised edition, or
·amended.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests.
It is the recommendation of the committee that the content of this publication be adopted for national implementation not earlier than 12 months from the date of publication.
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