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3.4
Functional description
3.4.1
Top filterfan PTF
Fig. 3: Functional description of the PTF top filterfan (example)
1
PTF top filterfan
2
Switch cabinet
The PTF top filterfan serves for ventilation and heat dissipation from switch cabinets and electronic housings by sucking the hot
air out of the switch cabinet.
Climatization is achieved by feeding in ambient air with a temperature below the permitted switch cabinet interior temperature.
The PTF should be operated together with an opening to the air inlet which lets through sufficient air for the application and
should be located in the lower third of the the switch cabinet or electronic housing to be ventilated. One or more suitable
Pfannenberg outlet filters (PFA) are typically used for this.
NOTE
•
The air inlet must have a sufficient air throughput rate.
•
In top filterfan PTF1200: To ensure IP54 protection category for the entire system, several outlet filters of the PFA
60.000 IP55 series must be used. The exact number must be adapted to the system pressure loss.
Operating Manual | Top Filterfans / Top Exhaust Filter | – 230 / 115 V | 086150000
3
Air inlet (e.g. Pfannenberg PFA top exhaust filter)
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