Siemens Aktiengesellschaft

Adb Bvba

Daniel Tessens

Jean-Claude Vandevoorde

Pierre Catoul

Francis Caus

Disclosed is a method for controlling a series circuit current of a lighting installation at an airfield or the like, in which case the series circuit current which flows through transformers which are arranged on the secondary side of an output transformer and are connected in series, in order to supply lighting appliances is controlled by means of a thyristor module, which is arranged on the primary side of the output transformer and has a variable trigger angle, in which case, when a control unit is in a constant-current mode, the trigger angle is set in such a manner that a series circuit current which corresponds essentially to a rated output current flows. The invention also relates to a constant-current regulator for carrying out the method.

Method for controlling a series circuit current of a lighting installation at an airfield or the like, and a constant-current regulator

A control for a flashlight system in an airport, includes flash units which are connected to an energy supply line and, on the output side, to respective flashlights of the flashlight system via a light cable. In order to avoid unwanted high voltages, each flash light unit includes an energy-integrating low-voltage capacitor which can be supplied by a current source having a corrected power factor and which is connected to the flashlights embodied as low-voltage lights. The energy transmitted to the flashlights can be electronically controlled. A connection device connecting the flash units to a local master control system is embodied as a local field bus system, in such a way that different, conventionally arranged, simultaneous or mixed flash configuration patterns can be produced by way of the same electrical installation.

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Herent, Belgium

Daniel Tessens