Checking The System Connections - Siemens SIPROTEC 4 7SD80 Manual

Line differential protection
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Optical Fibers, Directly
!
WARNING
Warning of laser rays!
Non-observance of the following measure can result in death, personal injury or substantial property
damage.
Do not look directly into the fiber-optic elements, not even with optical devices! Laser Class 3A
²
according to EN 60825-1.
The direct optical fiber connection is visually controlled by means of an optical fiber connector. There is one
connection for each direction. Therefore the output of the one device must be connected to the input of the
other device and vice versa. Transmission and receiving connections are identified with the symbols
transmit and for
channels.
Further Connections
For further connections a visual control is sufficient for the time being. Electrical and functional controls are
performed during commissioning (see the following main section).
3.2.3

Checking the System Connections

!
WARNING
Warning of dangerous voltages
Non-observance of the following measures can result in death, personal injury or substantial prop-
erty damage.
Therefore, only qualified people who are familiar with and adhere to the safety procedures and
²
precautionary measures should perform the inspection steps.
!
CAUTION
Take care when operating the device without a battery on a battery charger.
Non-observance of the following measures can lead to unusually high voltages and consequently,
the destruction of the device.
Do not operate the device on a battery charger without a connected battery. (For limit values see also
²
Technical Data, Section
Before the device is energized for the first time, it should be in the final operating environment for at least 2
hours to equalize the temperature, to minimize humidity and to avoid condensation. Connections are checked
with the device at its final location. The plant must first be switched off and grounded.
Proceed as follows in order to check the system connections:
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
receive. Important is the visual check of assignment of the transmitter and reception
4.1 General Device
Data).
Mounting and Commissioning
3.2 Checking Connections
for
225

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