Rittal Gmbh&co. Kg

Rittal-werk Rudolf Loh Gmbh & Co Kg

Michael Scholl

Wolfgang Reuter

Rolf Benner

Steffen Wagner

Ralf Schneider

Michael Maage

The invention relates to a method for regulating a cooling device fitted in or to a switchgear cabinet, by means of a regulating device, wherein the temperature of the switchgear cabinet interior air is detected and an interior fan assigned thereto for generating an interior air flow through an evaporator and providing cooling air is switched on if the detected temperature of the switchgear cabinet interior air exceeds an upper setpoint temperature, and is switched off if the detected temperature falls below a lower setpoint temperature, and the invention relates to an apparatus for carrying out the method. A reduced energy consumption and an increased service life with reliable operation are achieved by virtue of the fact that after the interior fan has been switched off owing to the lower setpoint temperature being undershot, a timekeeping is started and the interior fan is switched on after a predetermined first time duration for a predetermined second time duration and is then switched off again if the detected temperature still falls below the upper setpoint temperature, as long as the second time duration proceeds, that the intermittent time-controlled mode of operation of the interior fan is cyclically repeated until the upper setpoint temperature is exceeded, after which the interior fan is operated in continuous operation, and that the timekeeping and the intermittent time-controlled mode of operation of the interior fan are started anew if the lower setpoint temperature is undershot.

Method and apparatus for regulating a cooling device fitted to a switchgear cabinet

A locking arrangement for a switchgear cabinet, having a lock and two locking bars, wherein the locking bars are displaced in opposite directions to each other when the lock is operated. A dependably operating locking arrangement can be produced if in end areas facing away from the lock, the locking bars are hingedly coupled to respective lever arms of a locking lever. The locking lever has a second lever arm which is coupled to the first lever arm in the area of a pivot hinge and has an inclined pad. The pivot axis of the pivot hinge is arranged at a distance with respect to a push direction of the associated locking bar.

Locking arrangement for a switchgear cabinet

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Herborn, Germany

Michael Scholl