Siemens 400 V / 210...590 A operating instructions Installation

01.2004 Installation

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-sectionsare 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 mm2 per hole (e.g. 7 mm x 40 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!

Siemens AG 6SE7087-6CX86-2BA1	5-9
SIMOVERT MASTERDRIVES AFE Operating Instructions