Assemblies can emit and the must be immune to external
electromagnetic disturbances. IEC defines two categories
a) Environment A - relates to low-voltage non-public or industrial
networks / locations / installations including highly disturbing sources.
b) Environment B - relates to low-voltage public networks such as
domestic commercial and light industrial locations / installations.
This environment does not cover highly disturbing sources such as arc welders.
The specifier should detail a requirement for either Environment A or B.
In exceptional applications, for example, some rail applications, it is
necessary to specify a higher level of immunity.
0 comments:
Post a Comment