Siemens SIMOTICS M-1PH8 - Page 77

The maximum permitted pressure in the cooling circuit is 0.6MPa (6bar).
Note
If you use a pump that reaches a higher pressure, maintain a maximum pressure of 0.6 MPa by
taking appropriate measures (pressure relief valve, pressure control, etc.).
• Design the cooling circuit to have the smallest possible pressure di󹪜erence between the
supply and return pipes so that pumps with a shallow characteristic curve can be used.
• Design the cooling circuit with a self-cleaning 󹪝lter to avoid blockage and corrosion.
Pressure drop in the motor
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Figure4-2 Pressure drop in the cooling pipe system, shaft heights 80 to 132
Mechanical properties
4.1Cooling
1PH8 SIMOTICS M main motors
Con󹪝guration Manual, 12/2022, A5E51895839A 75