Cooling And Ventilation; General; Machines With A Fan - Siemens SIMOTICS SD Operating Instructions Manual
Low-voltage motors
Hide thumbs
Also See for SIMOTICS SD:
- Operating instructions manual (142 pages) ,
- Compact operating instructions (166 pages) ,
- Operating instructions manual (140 pages)
Table of Contents
Advertisement
3.3.3
Cooling and ventilation
3.3.3.1
General
The machines of this series are three-phase asynchronous machines with a closed primary
(internal) cooling circuit and an open secondary cooling circuit (surface cooling). The surface
cooling varies depending on the version.
3.3.3.2
Machines with a fan
Self-ventilation (standard): Cooling IC 411 in accordance with 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.
Note explosion-protected machines
Machines for use in Zone 21 and Zone 22 have a metal fan.
Low-voltage motors
Operating Instructions, 05/2014, 5 610 00000 02 000
Description
3.3 Installation
19
Advertisement
Table of Contents
