Studer Innotec SA
RCC-02/-03
58 V4.4.0 User manual
14.10.6.4 AC-In minimum voltage to decrease the input current {1309}
This parameter sets the voltage threshold where the input maximum current is lowered down to zero
when the parameter {1527} is activated.
14.10.6.5 Input voltage range for adjusting the input current {1433}
This parameter allows setting the input voltage range where the input current adjustment will be
applied.
14.10.6.6 Adjustment coefficient in between the input current and the minimum
input voltage {1295}
When the AC-In voltage diminishes, the input
current is automatically and proportionnally
decreased. With this parameter you determine
the factor of decrease to the full cut point:
A : Minimum voltage to authorize the charger
{1309}
B : Start of the decrease of the charge current
= Charger stop {1309} + {1433}
C : Factor of decrease of the current {1295}
This parameter is particularly useful when the energy source is a generator. The current
can be adjusted to take into account the generator voltage fluctuations in order not
to overcharge it.
14.10.7 Authorization to exceeding the maximum current of the source
(Input limit) without interrupting the transfer {1436}
The parameter {1107} allows you to adapt the running of the Xtender to the maximum power of the
source. In case this value is overrun, the transfer relay is not open and the circuit breaker on the
source side may go on default. With this parameter you can force the transfer relay to open itself
and the Xtender to work in inverter mode.
Use this function if you have available a source that is smaller than the Xtender and if
you don’t use the function Smart-Boost. In this way, in case of overload of the source,
all the power is supplied by the Xtender, up to its own limits.
14.10.8 Type of detection of the grid loss (AC-In) {1552}
The abscence of input voltage (AC-In) opens the transfer relay and the inverter is activated. This
detection works at three possible speeds.
The function « slow » suits small generators especially well but may create microcuts on the grid at
the output (AC-Out) during commutation. This function will let some fluctuation of the input voltage
and frequency before reacting.
The function « fast » is well adapted for sensitive loads that require few or no cuts during work.
The function « tolerant » lies in between and its sensitiveness can be set with the parameter {1510}.
This way it is generally also possible to use small generators with loads sensitive to microcuts.
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