Technical data

MHD Sychronous motors General Notes on Technical Data 5-1
DOK-MOTOR*-MHD********-PR05-EN-P
5 General Notes on Technical Data
5.1 60-K and 100-K Parameters
The speed-torque curves and the technical data are specified for two
different motor overtemperatures.
These are:
• 60 K housing overtemperature and
• 100 K winding temperature
Note: When selecting the technical data, observe the temperatures
specified! The appropriate parameters are identified by 100 K
or 60 K.
The motor data and characteristic curves are determined using MHD
motors under the following conditions:
• Insulated structure (aluminum flange)
• Permissible housing overtemperature ∆T = 60 K
• If motors with the optional holding brake are concerned, the data are
always specified for motors with holding brake.
• Motors with radial shaft sealing ring
The motor data and characteristic curves are determined using MHD
motors under the following conditions:
• Structure not insulated (attachment to steel flange, LxWxH
450x30x350 in size; LxWxH 120x40x100 in case of the MHD041)
• Permissible winding overtemperature ∆T =100 K
• If motors with the optional holding brake are concerned, the data are
always specified for motors with holding brake.
• Motors with radial shaft sealing ring
Note: The machine accuracy can be negatively affected by an
increased linear expansion during 100-K operation. We
recommend to use 60-K data when projecting systems.
Structure and measurement of
the 60-K characteristic curve
Structure and measurement of
the 100-K characteristic curve