Full Description

Scope

This standard specifies design tests for relays and relay systems that relate to the immunity of this equipment to repetitive electrical transients. Two types of tests are specified. The oscillatory and fast transient SWC tests are defined as distinct tests. However, it is not intended to prohibit a combined test, provided all requirements of the individual SWC tests are met.The application of SWC tests to equipment other than relays and relay systems is the responsibility of those specifying the testing.

Purpose

This standard establishes a common and reproducible basis for evaluating the performance of relays and relay systems when subjected to repetitive transients on supply, signal, control, and communication lines orconnections. This standard establishes that an evaluation is performed during both normal (non-tripped) and abnormal (tripped) relay operating conditions.

Abstract

Revision Standard - Active.Two types of design tests for relays and relay systems that relate to the immunity of this equipment to repetitive electrical transients are specified. Test generator characteristics, test waveforms, selection of equipment terminals on which tests are to be conducted, test procedures, criteria for acceptance and documentation of test results are described. This standard has been harmonized with IEC standards where consensus could be reached. An errata is available for this standard at http://standards.ieee.org/findstds/errata/C37.90.1-2012.pdf

Product Details

Published: 09/17/2012 ISBN(s): 9780738187631, 9780738187648, 9781504414357, 9780738173054, 9780738173573 Number of Pages: 47 File Size: 1 file , 750 KB Redline File Size: 2 files , 5.6 MB Product Code(s): STDRL97280, STD97280, STDPD97280, STDPDRL97280, STDPL97280