Endress+Hauser Topclean S CPC30, Руководство по эксплуатации

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Topclean S 1 Safety instructions
Hauser 7
Electrical symbols
Symbol Meaning
%
DC voltage
A terminal at which DC voltage is applied or through which DC flows.
&
AC voltage
A terminal at which (sine-form) AC voltage is applied or through which AC flows.
)
Ground connection
A grounded terminal, which, from the user's point of view, is already grounded using a
grounding system.
*
Protective earth terminal
A terminal which must be grounded before other connections may be set up.
+
Equipotential connection
A connection which must be connected to the grounding system of the equipment. This
can be, for example, a potential matching line of a star-shaped grounding system, depen-
ding on national or company practice.
/
Protective insulation
The equipment is protected with an additional insulation.
b
Alarm relay
Input
Output