GEN7iB
199
INPUT CARDS
INPUT CARDS
12
● Theinsulationbetweenthevoltagechannelandchassisisclassiedas
REINFORCED or DOUBLE. This can be seen as double insulation, which is neces-
sary because the chassis might be accessible (conductive parts can be touched)
to users (personal safety).
● Insulation within a voltage channel is BASIC, since a channel is not accessible.
Therefore, there is no direct risk to users (product safety).
● REINFORCED or SUPPLEMENTARY insulation has higher test voltages than BASIC
insulation.
Voltage Channel - Maximum voltage overview
Inthefollowingguresisshownwhichvoltagecanbeapplied,basedontheenviron-
ment where the product is installed in. CAT II or CAT III rating (see Fig. 12.20); CAT IV
rating (see Fig. 12.21).
9
9'&
9
Fig. 12.20 Environment without CAT rating
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