SIEMENS
Selection and ordering
HT-direct motors 1FW4 water-cooled
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Siemens D 86.2 · 2007
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Further information
Structure
Basic structure of the water-cooled HT-direct motor 1FW4
HT-direct motors have two cooling circuits that can be used to
achieve intensive and effective cooling:
•
The aluminium fan within the motor provides air circulation be-
tween DE and NDE. This cools, in particular, the stator winding
overhang, the magnetic rotor and the bearings.
•
The heat from the internal air is transferred to the cooling water
through the motor housing.
Frame design
A welded steel stator housing. The condensation water drainage
holes are present and they are sealed during transport. For cer-
tain applications (e.g. in shipbuilding and the chemicals indus-
try), external components made from aluminium are not permit-
ted in the case of some customers. In these cases, aluminium
components (e.g. terminal boxes) are replaced with other mate-
rials.
If external components are not permitted to be made from
aluminium, this must be specified in plain text in the order.
Position of the terminal box and cable entry
The terminal box is mounted
on the top
, in the
basic version
at DE with cable entry from the right
(with view onto DE shaft
extension). If a second terminal box is required, this is mounted
behind it at NDE.
As an option, cable entry from the LHS is possible (order code
K85
).
When
only one
terminal box is mounted, cable entry is also pos-
sible from
DE
(order code
K83
) or
NDE
(order code
K84
).
Position of the terminal box and cable entry
G_D086_XX_00017
Cable entry
G_D086_EN_00018