20
SICAM P850/P855 7KG85xx, Product Information
E50417-B1050-C482-A3, Edition 03.2013
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.
10.4
Commissioning
Before you switch on the supply voltage, verify that the
operational data match the rated data on the name
plate and the technical data according to Chapter 19.
This applies in particular to the supply voltage V
H
and
to the maximum current and voltage values of the
device. After an operating time of approximately
15 minutes, the device will stay within the tolerances
specified in the technical data.
The delivery includes a lithium battery that powers the
battery-buffered memory and the real-time clock. Upon
delivery the battery is insulated in the battery
compartment of the device.