This Standard provides functional design and factory verification test requirements for Motor Control Centers (MCC) intended to reduce the likelihood of shock and arc-flash injuries. It applies to single and three phase 50 and 60 Hz and dc motor control centers rated not more than 600 V ac or 1000 V dc. These requirements are intended to facilitate performance of defined maintenance tasks on energized equipment .The requirements of this Standard are intended to augment the existing requirements of the applicable MCC safety standards for motor control centers, e.g. NEMA ICS 18-2001 “Motor Control Centers” and ANSI/UL 845-2005 “Motor Control Centers” which is a also known as NMX-J-353-ANCE-2006 and CSA C22.2 No. 254-05 (Base MCC Standards). This Standard also identifies field practices and interface relationships between the Specifier, Manufacturer, Installer and User for safety related concerns. The requirements in this standard compliment safety requirements and procedures as stipulated by workplace safety standards and site practices and site procedures, e.g., NFPA 70E Standard for Electrical Safety in the Workplace (NFPA 70E), site practice on Personal Protective Equipment, etc.
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