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Connection
4.1 Safety notes
Equipment Manual, 09/2022, L1V30415168B-03
33
Note
Only qualified personnel are allowed to install, commission or service this device.
•
Wear the prescribed protective clothing. Observe the general equipment regulations and
safety regulations for working with high-voltage installations (e.g. DIN VDE, NFPA 70E, as
well as national or international regulations).
•
The limits given in the technical data must not be exceeded even during commissioning or
testing.
•
The secondary connections of intermediate current transformers must be short-circuited
at the transformers before the power supply lines to the device are interrupted.
•
Check the polarity and the phase assignment of the instrument transformers.
•
Before connecting the device, ensure that the system voltage matches the voltage
specified on the rating plate.
•
Before you start commissioning the device, check that all connections are correct.
•
Before power is applied to the device for the first time, it must have been located in the
operating area for at least two hours in order to reach temperature balance and avoid
humidity and condensation.
•
Condensation on the device is not permissible during operation.
Note
Prevent capacitive and inductive interference.
Make sure that all data and signal cables are routed separately from control and power supply
cables. To avoid the risk of capacitive or inductive interference, these cables must never be
routed parallel.
See also
Applying the supply voltage (Page 54)
Measuring inputs (Page 15)
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