17
SICAM T 7KG966, Product Information
E50417-B1050-C493-A4, Edition 12.2012
Before commissioning the device, check that all
connections are made properly.
Connect the protective conductor terminal H
to the
protective conductor of the switch panel or of the
control cabinet.
The secondary connections of interconnected current
transformers must be short-circuited at these before
you disconnect the power supply leads to the device.
Voltage measuring inputs:
In the case of a
direct
connection
and
transformer connection
, the device
has to be safeguarded with a
listed 10 A backup fuse
or a listed 10 A miniature circuit breaker. When using
voltage transformers, their secondary connections
must never be short-circuited!
Check the polarity and the phase assignment at the
instrument transformers.
Before commissioning the device, leave it in the final
operating room for at least 2 hours. This allows it to
reach room temperature and to prevent dampness and
condensation.
Only for SICAM T 7KG966x-1xAx0-xAA0 (voltage
measurement via potential divider):
You cannot connect SICAM T 7KG966 directly in IT
networks because the measuring voltage is measured
against the PE connection and the input impedance of
the device causes a leakage current to ground. The
leakage current can cause the insulation monitoring in
IT networks to pick up. Make sure that the maximum
allowable voltage at the inputs of SICAM T 7KG966 to
ground V
ph-PE
= 480 V (max. 347 V for UL) is not
NOTE
When performing electrical installations, you have to
observe the national and international regulations on
the erection of electrical power installations.
