Technical documentation example

Here we present a redesign of a 4-pole 5.5kW motor 4A112M4. We have recalculated this motor with our design tools and then redesigned components of this motor in order to provide a sample of technical documentation.

Technical documentation example for 4A112M4

Recalculation of an induction motor 4A112M4 (click to expand)

Technical data for 4A112M4

ValueCatalogue data and measurementsDesign tool
Nominal useful power [kW]5.55.5
Synchronous speed [rpm]15001500
Number of poles44
Nominal line voltage [V]380380
Frequency [Hz]5050
Number of phases33
Connection of phasesYY
Nominal torque [Nm]36.32236.309
Phase resistance at 20°C [Ohm]0.9950.987
Rotation speed at nominal load [rpm]14461446.5
Nominal slip [%]3.63.57
Nominal current [A]11.49811.016
Efficiency at 50% of load [%]86.584.9
Efficiency at 75% of load [%]86.585.7
Efficiency at 100% of load [%]85.584.8
Power factor0.850.85
Ratio of starting torque to nominal [r.u.]22.009
Ratio of maximum torque to nominal [r.u.]2.22.356
Ratio of starting current to nominal [r.u.]76.07
Critical slip [r.u.]2520.2
No load current [A]3.956
Flux density in air gap [T]0.850.842
Losses in stator winding [W]497.338
Losses in rotor cage [W]208.893
Losses in steel [W]191.402
Mechanical losses [W]29.221
Additional losses at load [W]32.307
Total losses [W]932.749958.161
Av. t° of stator winding at ambient t°= 40°C, °C113.5113

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Standard components for 4A112M4

BOM for 4A112M4

Technical documentation example for 4A132M6

Recalculation of an induction motor 4A132M6 (click to expand)

Technical data for 4A132M6

ValueCatalogue data and measurementsDesign tool
Nominal useful power [kW]7.57.5
Synchronous speed [rpm]10001000
Number of poles66
Nominal line voltage [V]380380
Frequency [Hz]5050
Number of phases33
Connection of phasesYY
Nominal torque [Nm]73.98773.951
Phase resistance at 20°C [Ohm]0.6460.645
Rotation speed at nominal load [rpm]968968.5
Nominal slip [%]3.23.15
Nominal current [A]16.45415.737
Efficiency at 50% of load [%]8483.2
Efficiency at 75% of load [%]8584.9
Efficiency at 100% of load [%]85.584.7
Power factor0.810.805
Ratio of starting torque to nominal [r.u.]22.206
Ratio of maximum torque to nominal [r.u.]2.52.8
Ratio of starting current to nominal [r.u.]66.106
Critical slip [r.u.]2622.8
No load current [A]7.499
Flux density in air gap [T]0.870.872
Losses in stator winding [W]611.545
Losses in rotor cage [W]251.509
Losses in steel [W]313.868
Mechanical losses [W]29.933
Additional losses at load [W]43.732
Total losses [W]1271.931250.587
Av. t° of stator winding at ambient t°= 40°C, °C105111.4
Av. t° of housing at ambient t°= 40°C, °C7775.1

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Standard components for 4A132M6

BOM for 4A132M6

Technical documentation example for 4AM160S4

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Standard components