Power Electronics SD750FR, Hardware And Installation Manual

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POWER ELECTRONICS SD750FR
MECHANICAL INSTALLATION
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2
nd
Area/Level
– Rectifier bridge, Inverter bridge and DC bus cooling area:
The drive integrates axial fans that intake the air from the bottom part of the drive and evacuates it
through the middle top outlet gratings. The fans propel the air through the heat sink evacuating the heat
generated by the main components. The fans will increase or decrease the internal air speed depending
on the IGBT’s temperature.
3
rd
Area/Level
– Filters:
Cabinets integrate in its rear part the input LCL. Both are equipped with exhaust fans on the top of the
cabinet that evacuates the internal heat generated within the area. Additionally, internal disperse fans
are placed to increase the cooling capacity.
The installer must ensure that the indoor installation area is equipped with a suitable cooling system that
is in accordance the ambient conditions of the drive (exhaust air vents, inlet gratings, air conditioning
system, etc). The following figure and table provide the data for a correct cooling system dimensioning.
ID FRAME 5
GENERAL INLET GRATING NET SECTION (m²) C 0.026028
2 ND AREA
MAXIMUM OPERATION FLOW (m³/h) C-E 1600 m³/h
OUTLET GRATING NET SECTION (m²) E 0.017642
3
RD
AREA MAXIMUM FLOW (m³/h) D 480 m³/h
SD750FR has a modular design. Frames 6 to 8 drives consist of frame 5 units parallel connection.
Therefore, to calculate the cooling data for bigger frames multiply the data from the tables above by the
following factors.
FRAME 6 7 8 9 10 11
FACTOR x2 x3 x4 x6 x9 x12
ID DESCRIPTION
A Output motor power cable plate
B Input power cable plate
C Inlet grating 2 ND and 3 RD area
D Exhaust fans 3
RD
area
E Outlet grating 2
ND
area