TAM 00695
25
DST2-135
– 400 W
10 / 2019
Three-phase synchronous motor, water-cooled
English
8
Appendix 2: water-cooled machines
In addition to the previous chapters for water-cooled motors (EN 60034-6; IC 3W7) the following
must be considered complementary:
8.1 Definitions of power ratings for water-cooled machines
The power ratings (torques) that appear in the list apply to permanent operation S1 at nominal
speed, provided the cooling circuit requirements for water-cooled motors are met!
The reduction factors included in the table below must be considered when operating DST2 motors
with higher coolant inlet temperatures:
Coolant inlet temperature
25 °C
30 °C
35 °C
40 °C
45 °C
Percentage of list performance (torque)
100 %
97 %
95 %
92 %
89 %
Table 6:
Reduction factors
8.2 Motorcooling
The coolant (in accordance with the coolant properties specified in
Section 8.6
) is permitted to
contain corrosion inhibitors and anti-bacterial additives. The type and volume of these additives is
based on the respective manufacturer’s recommendations and the prevailing ambient conditions.
The safety regulations for the product from the manufacturer of the corrosion inhibitors
and anti-bacterial additives must be observed.
Cooling lubricants employed in the manufacturing process are not allowed to be used
to cool the motor!
To prevent blockages and deposits in the coolant pipes and channels, coolants used
in closed or open cooling circuits must be filtered. When used in a closed cooling
circuit, the coolant must be filered before it is poured in, in open cooling circuit
basically (filter fineness: < 0.1 mm).
Note:
The system manufacturer is responsible for the planning of the cooling circuit.
Condensed water must not be allowed to accumulate.
8.3 Instructions for installation
Cooling connection:
Size
135
200
260
315
400
Connections Flow
Return
1
1
1
1
1
1
1
1
1
1
Connection thread
(female)
G1/4“
G3/8“
G1/2“
G1/2“
G1“
Direction of flow
Any
Table 7: Cooling connection
Water cooling:
The coolant pipes should not exert compression-tension forces or torsional strain on
the motor connections.
The connection must be made by specially trained personnel. During this process the
motor must disconnected and electrically isolated.
When coupling and uncoupling the coolant pipes, make sure that coolant does not
enter the motor's terminal box.
