Motor components of the
Coolant intake temperature
The intake temperatures must be selected in such a way that no condensation forms on the surface of the motor. Condensation can lead to corrosion in the machine.
Tkühl ≥ TUmgeb - 2 K
The motors are designed in accordance with DIN EN
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Figure 3-3 Principal dependency of the continuous motor current on the intake temperature of water cooling in the main cooler when the rotor losses are disregarded
Heat-exchanger unit
A
The cooling power is calculated from the sum of the power losses of the connected motors. The pump power must be adjusted in accordance with the specified flow and pressure loss of the cooling circuit.
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Dimensioning the heat-exchanger unit
The power loss generated in the motor during continuous operation causes a heat flow, most of which is dissipated via the coolant in the cooling system. A smaller proportion of it is dissipated via the surrounding machine construction. The cooling power of the heat- exchanger unit in the cooling system must be designed in such a way that it can dissipate at least 85 - 90% of the generated power loss. If several motors are operated simultaneously on one cooling system, this value applies to the combined total power loss.
1FW6
Configuration Manual, 05/2009, | 51 |
