EN 50490:2008

1 Scope
2 Normative references
3 Definitions
4 General requirements
  4.1 Electrical connections
  4.2 Enclosure for indoor units
  4.3 Enclosure for outdoor units
  4.4 Mechanical impact protection
  4.5 Earthing
  4.6 Service temperature and humidity
  4.7 Reliability
  4.8 Electrical characteristics
  4.9 Marking
5 Functional requirements
  5.1 Switching
  5.2 Monitoring
6 Type and routine tests
  6.1 General
  6.2 Type tests
  6.3 Routine tests
7 Test descriptions
  7.1 Visual inspection
  7.2 Mechanical test
  7.3 Environmental tests
  7.4 Electrical test
  7.5 Protection level test
  7.6 EMC emission and immunity test
  7.7 Functional test
  7.8 Operational test
  7.9 Ingress protection test
Annex ZZ (informative) - Coverage of Essential Requirements of
         EC Directives
Bibliography

This European Standard is intended to give general minimum frame requirements for units that are independent of the technology used for switching and/or monitoring of individual or group of lamps in an AGL series circuit. This European Standard •applies to the units that are directly electrically connected to the primary or secondary side of an AGL series circuit and are needed to provide the selective switching and/or monitoring of lamps, •does not cover communication protocols and application procedures, •does not treat system aspects that influence the AGL operation. NOTEThese units may be used forming part of either a SMGCS or A-SMGCS to guide and/or control the surface movement of aircraft by means of visual aids.