This International Standard applies to the maintenance of AGL constant current series circuits.
This International Standard
• covers constant current series circuits for AGL installed at aerodromes and heliports;
• concentrates on providing the safety requirements for the maintenance of an AGL
constant current series circuit. It is recognized that AGL constant current series circuits of
different design characteristics and parameters are in existence;
• is mainly concerned with safety to persons by specifying the rules and fundamental
principles for the maintenance of AGL constant current series circuits;
• is not intended to apply to AGL primary series circuits supplied directly from a mains
constant voltage source;
• is not intended to be used for public street lighting, roadway lighting or any other
installation requiring the use of constant current series circuits.