Ratings definition
The power, torque, speed, current and voltage ratings for S1 operation apply for a maximum permissible ambient temperature of 40°C and an altitude of the motor below 1000 m a.m.s.l. If motors are to be operated in an ambient temperature of more than 40 °C or altitudes above 1000 m a.m.s.l., the required list nominal power P
L (list nominal torque M
n ) results from the product of the factors k
1 , k
2 specified in the table and the required power P (torque M). Ambient temperature 40 °C 45°C 50 °C 55°C 60°C For ambient temperatures above 40 °C and enclosed installation of motors, it is absolutely necessary to contact the manufacturer, because design changes may be necessary. If, with increasing site altitude above 1000 m, the ambient temperature decreases by approx. 10 °C per 1000 m increase in altitude, no power correction is necessary. Correction factor k
1 1 1.06 1.13 1.22 1.34 Altitude a.m.s.l. up to 1000m 2000m 3000m 4000m 5000m Correction factor k
2 1 1.07 1.16 1.27 1.55
Winding isolation and temperature rise
All machines of this series are designed in insulation class F according to EN 60034 for a permissible winding temperature of 105 K at a room temperature of up to 40 °C. The insulation is resistant against gases and vapours of combustible materials and it meets the requirements placed on a moisture-proof and tropical insulation. A special insulation that can be obtained for an extra charge is necessary if concentrated acid vapours and metallic powders occur, with a permanent relative air humidity of more than 80% and as protection against termite and mould fungus attacks. In the case of converters with a DC link voltage > 500 V, the cables between the converter and the motor must not be longer than 20 meters. For longer cables, additional measures (e.g. motor filters) must be provided. The maximum permissible terminal voltage is 1000 V.
Explanation of the motor data
P
N Nominal power ( kW ) with nominal speed n
N in continuous operation (S1) M
N Nominal torque ( kW ) with nominal speed n
-1 N in continuous operation (S1) n
N Nominal speed ( min ) n
-1 1 Limit speed for field weakening (constant power) ( min
-1 ) n
max mechanically permissible operating speed ( min ) U
N Nominal voltage ( V ) I
N Nominal r.m.s. current ( A ) I Magnetizing current (A) cos Power factor
N Efficiency f
N Nominal frequency (Hz) J Rotor inertia incl. resolver without holding brake (kg m²) m Weight (kg) M
o,max Maximum standstill torque (Nm)
Ratings of asynchronous motors DA
The specified ratings are achieved in
industrial inverter operation (field-oriented control) with a clock frequency of 4 kHz in the power stage. A chopping frequency of 6 kHz is recommended.
Overload capacity
According to technical data sheet
Technical alterations reserved 02/05Three-phase asynchronous motors DA 100-2254 Baumüller Nürnberg GmbH