Power Electronics SD750FR, Руководство по аппаратному обеспечению и установке

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SD750FR POWER ELECTRONICS
32
MECHANICAL INSTALLATION
EN
Cooling
SD750FR drives integrate a variable speed system that varies the cooling flow depending on the IGBT
temperature, increasing the fans’ lifetime and their efficiency.
The heat sources inside the equipment correspond with the inverter and rectifier bridge (IGBTs), input
filter and the output dV/dt filter. SD750FR series present an overall efficiency higher than 97% at rated
power, so the heat dissipation approximately corresponds to 3% of the input power.
It is mandatory to keep all the inlet and outlet gratings of the drive without any obstacle that could reduce
the cooling capacity of the drive.
The bottom metal panels must be mechanized to pass through them the power cables. It is forbidden to
mechanize the bottom inlet gratings; otherwise, the drive could have a deficient cooling flow.
The cooling system of the drive depends on its degree of protection and its frame. In general terms, the
drive has been designed with three independent cooling areas.
1
st
Area/Level - Electronics:
IP20 cabinets incorporate extractors in its upper part that evacuate the internal heat generated in the
area.
IP54 cabinets keep electronic components fully sealed. The internal heat generated is evacuated through
the metal doors thanks to an internal forced convection system.