Siemens SIMOTICS-T 1FW68 Engineering Manual page 119

Cooler data
Q
MAX
MIN
ΔT
Figure 6-2
Δp
Figure 6-3
1FW68 radial segment motors
Configuration Manual, 04/2017, 6SN1197-0AE02-0BP1
Maximum thermal power that is dissipated by the cooler when the stator segment
is utilized up to the rated torque M
Recommended minimum volume flow rate in the cooler to achieve the rated torque
M .
N
The temperature increase of the cooling medium between the intake and return
flow circuit of the cooler at the operating point Q
using the following formula:
average density of water: ρ = 1000 kg/m
average specific thermal capacity of water: c
Temperature change with respect to the intake temperature: ΔT
volume flow: in m /s
3
Sample characteristic "Temperature increase of the coolant between the intake and
return of the cooler"
Pressure drop of the cooling medium between the intake and return of the cooler
for flow rate .
MIN
Sample characteristic: "Pressure losses in the cooler with respect to the flow rate"
Technical data and characteristics
and at rated temperature T
N
and
MAX
3
= 4,18 · 10
3
p
6.1 Explanations
.
N
can be estimated
MIN
J/(kg K)
in K
H
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