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2021-07-15 / V1.0
Contactors C320K/C320S – Installation and Maintenance Manual
Installation
7.3 Checks
After the installation, perform the following checks:
X
Check that the contactors are correctly installed on
the mounting plate and tightly screwed in place.
X
Check that the connecting wires or busbars are
correctly installed and fit tightly at the main con-
tacts.
X
Check that the control wires of the coil terminals
are correctly installed and have the correct polar-
ity.
X
Check that the control wires are correctly connect-
ed to the auxiliary switches.
Check the correct assignment and function of the
auxiliary switches using a continuity tester.
X
Switch the contactor several times without acti-
vating the main power circuit.
X
Check the pull-in and drop-off voltage based on
the Schaltbau specifications. See
C320 catalogue
.
X
Check the routing of the wiring. Wires must not be
squeezed or bent. If applicable bundle and secure
wires using cable ties.
X
After every installation or after maintenance,
check the contactor for correct operation in accor-
dance with the following standards:
-
EN/IEC 60077-2
-
EN/IEC 60947-4-1
