Product Data Sheet 3950 The engineer's choice
Product Data Sheet 3950 3950 INDEX 1 General ...................................................................................................................................................................... 3 2 Mechanics ................................................................................................................................................................. 3 2.1 2.2 3 Operating Data ..........................................................................................
Product Data Sheet 3950 1 General Fan type Rotating direction looking at rotor Airflow direction Bearing system Mounting position - shaft Balancing grade 2 Mechanics 2.
Product Data Sheet 3950 2.
Product Data Sheet 3950 3 Operating Data 3.1 Electrical Operating Data Measurement conditions: Normal air density = 1,2 kg/m3; Temperature 23°C +/- 3°C; Motor axis horizontal;warm-up time before measuring 5 minutes (unless otherwise specified). In the intake and outlet area should not be any solid obstruction within 0,5 m. ∆p = 0: corresp. to free air flow (see chapter aerodynamics) I: corresp.
Product Data Sheet 3950 3.2 Electrical Features Locked rotor protection Locked rotor current at 3.3 Impedance Aerodynamics Measurement conditions: Measured with a double chamber intake rig acc. to DIN EN ISO 5801. Normal air density = 1,2 kg/m3; Temperature 23°C +/- 3°C; In the intake and outlet area should not be any solid obstruction within 0,5 m. Motor shaft horizontal. The information is only valid under the specified test conditions and may be changed by the installation conditions.
Product Data Sheet 3950 3.4 Sound Data Measurement conditions: Sound pressure level: 1 meter distance between microphone and the air intake. Sound power level: Acc. to DIN 45635 part 38 (ISO 10302)Sound power level: Acc. to DIN 45635 part 38 (ISO 10302) Measured in a semianchoic chamber with a background noise level of Lp(A) < 5 dB(A) For further measurement conditions see chapter aerodynamics. a.) Operation condition: 2.
Product Data Sheet 3950 5 Safety 5.1 Electrical Safety Dielectric strength DIN EN 60950 (VDE 0805) and DIN EN 60335 (VDE 0700) A.) Type test Measuring conditions: After 48h of storage at 95% R.H. and 25°C. No arcing or breakdown is allowed! All connections together to ground. B.) Routine test Measuring conditions: At indoor climate. No arcing or breakdown is allowed! All connections together to ground. Isolation resistance Measuring conditions: After 48h of storage at 95% R.H.
