Description
3.3 Installation
Standard motors SH 63 ... 355
Operating Instructions, 12/2018, A5E38483075A
21
The regulations and standards used as the basis for designing and testing this machine are
stamped on the rating plate. The machine design basically complies with the following
standards:
Table 3- 1 Applicable general regulations
Dimensioning and operating behavior
Procedure for determining the losses and the effi-
ciency of rotating electrical machines and inspec-
tions
EN / IEC 60034-2-1
EN / IEC 60034-2-2
EN / IEC 60034-2-3
GOST R IEC 60034-2-1
GOST R IEC 60034-2-2
GOST IEC 60034-2-3
Terminal designations and direction of rotation
Starting characteristics of rotating electrical ma-
EN / IEC 60034-12 GOST R IEC 60034-12
Vibration severity grades
Efficiency classification of three-phase squirrel-cage
EN / IEC 60034-30-1 GOST IEC 60034-30-1
3.3.1 Cooling and ventilation
3.3.1.1 General
The machines of this series have a closed primary (internal) cooling circuit and an open
secondary cooling circuit (surface cooling). The surface cooling varies depending on the
version.
3.3.1.2 Machines with a fan
Self-ventilation (standard): Cooling method IC 411 according to EN / IEC 60034-6
Located at the ND end of the stator housing is an air intake cowl that guides the external air
on its way to the motor. The external air is drawn in through openings in the air intake cowl
and flows axially across the outer cooling ribs of the motor frame. The fan wheel for the
external flow of cooling air is attached to the machine shaft.
The fan wheels are bidirectional.
Check the cooling effect below rated speed in the case of frequent switching or braking – or
if the speed is controlled continually below the rated speed.
To Next Page
Loading...
