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2019-03-06 / V1.0
Installation
Contactors CT/CU Series – Installation and Maintenance Instructions
9.4 Checks
After the installation is completed, do the following
checks:
X
Check the protective earth.
X
Check the main connections.
X
Check the control connections.
X
Check the latching and locking between upper
and lower module.
X
Check that both protection covers are tted.
X
Perform several activation and deactivation op-
erations of the contactor without the main circuit
active.
X
Check the function of the auxiliary switches:
Use a continuity tester to check that the wiring is
correct and the auxiliary switches are functioning
correctly.
X
Check the pull-in voltage and drop-o voltage
according to the requirements of Schaltbau.
X
After each installation and after replacement of
main contacts, contact bridge or after any other
modications, alterations or maintenance works,
always perform complete checks according to
these standards:
- IEC 60077-2
- IEC 60947-4-1
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