LEDs
After tests where the displays appear on the LEDs, these should be reset in order that they present information
only on the currently executed test. This should be done at least once each using the reset button on the front
panel and via the binary input for remote reset (if allocated). Observe that an independent reset occurs also on
the arrival of a new fault and that setting of new indications can be optionally made dependent on the pickup
or a trip command (parameter 7110
FltDisp.LED/LCD
).
Checking System Incorporation
General Information
!
WARNING
Warning of hazardous voltages
Non–observance of the following measures can result in death, personal injury or substantial prop-
erty damage.
²
Only qualified people who are familiar with and observe the safety procedures and precautionary
measures shall perform the inspection steps.
With this check of the parallel switching device, the correctness incorporation into the power system is tested
and ensured.
Checking of parametrization (allocations and settings) in accordance with the power system requirements, is
an important test step here.
The interface-wide incorporation check in the power system results on the one hand in testing of cubicle
wiring and drawing records in accordance with functionality, and on the other hand the correctness of cabling
between transducer or transformer and protection device.
Auxiliary Power Supply
Check the voltage magnitude and polarity at the input terminals.
i
i
NOTE
If a redundant supply is used, there must be a permanent, i.e. uninterruptible connection between the
minus polarity connectors of system 1 and system 2 of the DC voltage supply (no switching device, no
fuse), because otherwise there is a risk of voltage doubling in case of a double earth fault.
!
CAUTION
Be careful when operating the device connected to a battery charger without a battery
Non-observance of the following measure can lead to unusually high voltages and thus the destruc-
tion of the device.
²
Do not operate the device on a battery charger without a connected battery. (For limit values see also
Technical Data, Section
Visual Check
During the visual check the following must be considered:
3.2.3
Mounting and Commissioning
3.2 Checking Connections
SIPROTEC 4, 7VE61 and 7VE63, Manual
167
C53000-G1176-C163-3, Edition 10.2017
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