Specifies requirements for measuring equipment applied to testing th e phase sequence in three-phase distribution systems. Indication of the phase sequence may be mechanical, visual and/or audible.
Legislation related to this standard
Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
Harmonized/Supporting
WITHDRAWN
EN 61557-7:1997
99.60
Withdrawal effective
Mar 1, 2010
PUBLISHED
EN 61557-7:2007