This standard is applicable to d.c. and three-phase a.c. machines with shaft heights 56 mm and higher and a rated power up to 50 MW at nominal speeds from 600 rev/min up to and including 3600 rev/min - For vertical machines this standard is only applicable to those machines that are measured in a state of free suspension and it excludes those that exceed a shaft height of 400 mm - This standard is not applicable to machines mounted in situ three-phase commutator motors single-phase machines, three-phase machines operated on single-phase systems water power generators permanent magnet generators or to machines coupled to their prime movers or driven loads (The shaft height of a machine without feet or a machine with raised feet or any vertical machine is to be taken as the shaft height of a machine in the same basic frame but of the horizontal shaft foot-mounting type IM B3 (see IEC Publication 34-7: Rotating Electrical Machines - Part 7: Symbols for Types of Construction and Mounting Arrangements of Rotating Electrical Machinery
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)
WITHDRAWN
HD 347 S1:1978
WITHDRAWN
HD 53.14 S1:1992
99.60
Withdrawal effective
Aug 1, 1997
WITHDRAWN
EN 60034-14:1996