SIEMENS
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Siemens D 83.1 · 2016
1
Introduction
General technical specifications
Information about electric motor dimensioning
■
Overview
Power
The rated power and operating values specified in the selection
tables apply to duty type S1 in accordance with EN 60034-1 at
a rated frequency of 50 Hz at rated voltage, a coolant tempera-
ture (CT) of up to 40 °C and an installation altitude of up to
1000 m above sea level.
The motors can also be used at a coolant temperature of
between 40 °C and 60 °C or an installation altitude of between
1000 m and 4000 m above sea level. In these cases, the rated
power specified in the selection tables must be reduced in
accordance with the diagram, or a sufficiently larger motor type
or higher temperature class should be selected. If the coolant
temperature is reduced at installation altitudes of over 1000 m
above sea level, there is no need for a reduction in the rating
data.
Occasional current overload
In accordance with EN 60034-1., the motors with a rated power
up to 315 kW are designed to withstand 1.5 times the rated
current for 2 minutes at operating temperature without adversely
affecting the service life. No specifications have been defined
for larger motors.
Conversion of power from kW to hp
The power can be converted from kW to hp as follows:
1 kW = 1.341 hp
Reduction factors for increased ambient temperature and
installation altitude:
•
The motor power can be approximated in accordance with the
following characteristic curve.
•
The following derating tables are superordinately applicable
for the 1PS motor series in line operation.
•
In converter operation, the derating factor applies in
accordance with the curve.
m
G_D083_EN_00038a
Installation altitude above sea level
1000
1500
2000
2500
3000
3500
Coolant temperature (CT)
Rated power
°C
60
55
50
45
40
100
90
95
%
80
70
75
85
m
1000
1500
2000
2500
3000
3500
© Siemens AG 2016