6
Note
Classification of technical equipment operating conditions according to
GOST R 51317.4.5:
Class 0
Protected electromagnetic environment, usually inside a specially equipped room.
Class 1
Partially protected electromagnetic environment.
Class 2
Electromagnetic environment in case of separation of power cables and signal
cables.
Class 3
Electromagnetic environment in case of parallel installation of power cables and
signal cables.
Class 4
Electromagnetic environment in case of installation of connecting cables outdoors
in the proximity of power cables and using multi-wire cables containing circuits of
electronic and electrically powered equipment.
Class 5
Electromagnetic environment in case of connecting technical equipment to
communication networks and overhead power lines in scarcely populated areas.
Class X
Special operating conditions established in the standards and technical
documentation for a particular type of technical equipment.
