Siemens SIMOVERT MASTERDRIVES 6SE7087-6CX86-2BA1 Manual page 31

04.2006
Siemens AG 6SE7087-6CX86-2BA1
SIMOVERT MASTERDRIVES AFE
If the units are operated with an arcing short-circuit, this will result in the
failure of the units or in their destruction!
An arcing short-circuit must be prevented by the provision of
partitions.
The control cabinets or similar equipment mounted adjacent to the AFE
inverter cabinets etc. must also be taken into account.
Fig. 5-8 below shows the required partitioning. The partitioning must
reach up to the cabinet frame. It must be constructed such that the exit
air flow is not pushed into the crossbeams and uprights of the cabinet,
but directed around them.
Partitions are necessary with all types of protection higher than
IP20.
The required opening cross-sections are specified in the table.
The indicated opening cross-section is made up of several holes. In
order to keep the pressure loss here to a minimum, the cross-sectional
surface has to be at least 280 mm
The opening and hole cross-sections ensure functioning even with high
types of protection.
These are implemented by using wire-lattices (wire fabric DIN 4189-
St-vzk-1x0.28) in front of the openings or the filters indicated in the
following. If finer filters are used, the filter surface and thus the opening
cross-section (upwards) have to be adapted accordingly.
If filters are used, the intervals for their replacement must be
observed!
Operating Instructions
2
per hole (e.g. 7 mm x 40 mm).
Installation
5-9