scope:

Covers constant regulators used in series citcuits of aviation ground lighting installations. This prestandard is applicable to constant current regulator assemblies, including control and monitoring devices, used for supply of a constant current to series connected light sources in airfield lighting systems. The Constant Current Regulator is designed to produce a constant current output independent of variations in the circuit load or, in some limits, of variations in the input voltage to the Constant Current Regulator. The object is to provide equipment specifications and tests for constant current regulators used on airport that are considered necessary to meet the operational standards adopted by ICAO and to cover all aspects of safety (electrical, thermal and mechanical). This prestandard is in accordance with ICAO Annex 14.