SIEMENS
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Siemens MD 50.8 · 2017
Motors
Orientation
Technical specifications
4
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Overview
The motors comply with all applicable international (IEC),
European (EN, CENELEC), and national (DIN/VDE) standards:
Motor type
Three-phase induction motors with squirrel-cage rotor
Connection types
You can establish the connection type that can be used from the
product number suffixes in the selection and ordering data for the
required motor.
Number of poles
2, 4, 6, 8
Rated speed (synchronous speed)
750 … 3 600 rpm
Rated power (50 Hz)
0.09 … 9.2 kW (4-pole)
Rated torque
0.85 … 49.9 Nm (4-pole)
Stator winding insulation
Temperature class 155 (F)
Utilization according to temperature class 130 (B)
Optionally, temperature class 180 (H)
Degree of protection acc. to IEC 60034-5 (EN 60034-5)
IP55
Optional IP65, IP56
Cooling acc. to IEC 60034-6 (EN 60034-6)
Self-cooled (IC 411)
Optionally, force ventilated (IC 416)
Coolant temperature
-20 … +40 °C
Installation altitude
Up to 1 000 m above sea level
Rated voltage
200 … 690 V
You can establish the voltage that can be used from the selection and
ordering data for the required motor.
Rated frequency
50 Hz, 60 Hz, 87 Hz
Vibration severity acc. to IEC 60034-14 (EN 60034-14)
Vibration severity A
Balancing type
Half-key balancing
Sound pressure level, sound power level acc. to IEC 60034-9 (EN 60034-9)
You can establish the corresponding sound pressure level and sound
power level from the selection and ordering data for the required motor.
Weight
You can establish the corresponding weight from the selection and
ordering data for the required motor.
Rating plates
See "Rating plate" in chapter "General options"
Connection and terminal boxes
See "Connection, circuit and terminal boxes" in chapter "Motor options"
© Siemens AG 2017