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MS2N
Derating in case of deviating ambient conditions
Bosch Rexroth AG
R911347581, Edition 05
2.
Pan the S1-characteristic curve M
S1
par-
allel to the speed axis to the junction of
the S1-characteristic curve and to the cal-
culated point M
0 red
on the torque axis.
🡆
The determined characteristic curve
M
S1 red
shows approximately the S1-
characteristic curve with appropriate
derating.
M [Nm]
n [1/min]
M
S1 red
M
S1
M
0
M
0 red
Fig. 34: Determine S1-characteristic curve M
S1
red
with derating factor f
TH
Table 15: Derating factors for self-cooling 60K
Height
[m]
40 °C
45 °C
50°C
55 °C
60 °C
1,000
1.00
0.94
0.88
0.83
0.78
1,500
0.97
0.91
0.85
0.81
0.76
2,000
0.94
0.88
0.83
0.78
0.73
2,500
0.90
0.85
0.79
0.75
0.70
3,000
0.86
0.81
0.76
0.71
0.67
Table 16: Derating factors for self-cooling 100K
and forced ventilation
Height
[m]
40 °C
45 °C
50°C
55 °C
60 °C
1,000
1.00
0.96
0.92
0.88
0.85
1,500
0.97
0.93
0.89
0.85
0.82
2,000
0.94
0.90
0.86
0.83
0.80
2,500
0.90
0.86
0.83
0.79
0.77
3,000
0.86
0.83
0.79
0.76
0.73
Table 17: Derating factors for water cooling
Height
[m]
40 °C
45 °C
50°C
55 °C
60 °C
1,000
1.00
0.96
0.92
0.88
0.85
1,500
0.99
0.95
0.91
0.87
0.84
2,000
0.97
0.93
0.89
0.85
0.82
2,500
0.96
0.92
0.88
0.84
0.81
Height
[m]
40 °C
45 °C
50°C
55 °C
60 °C
3,000
0.95
0.91
0.87
0.83
0.80
To avoid condensation of the motors, the coolant
supply temperature must be above the dew point
temperature .
Commis
sioning and oper
ation
