Grid Parameters - Siemens SENTRON 3WA1 Manual

Description
2.5 Electronic trip unit ETU600
2.5.8.1

Grid parameters

Rated current I
The menu shows the parameter Rated current I
the option plug.
Rated voltage U
The rated voltage U
breaker is to be used.
The set value affects the maximum current setting of the short-circuit protective
functions. These can be set to up to 80% of the voltage-dependent breaking capacity.
Note
Restart of ETU600 required
Changing the rated voltage U
unit.
The restart can be performed after the change by pressing the F4 operating key on the
display.
Rated frequency f
The rated frequency f
breaker is to be used.
The setting affects the accuracy of the current and voltage measurement of the
electronic trip unit.
A difference between the parameterized rated frequency and the measured frequency is
detected by the ETU600 electronic trip unit and signaled as a warning message, see
Chapter Display of errors and alarms (Page 181).
124
n
LL
parameter defines the phase-to-phase voltage for which the circuit
LL
parameter requires a restart of the ETU600 electronic trip
LL
n
parameter defines the frequency of the network where the circuit
n
. It corresponds to the current value of
n
Equipment Manual, 02/2023, 92310000002-06
3WA1 air circuit breaker