Rev. 1.00
22586_EDEBDA0253-0318-1_EN
9
KBR multicomp F144-3 6DO/6RO
After an adaption time of 60 seconds, the thyristor stages are switched by
contactor stages of the same size. This guarantees that the fast control charac-
teristics can be kept.
The integrated temperature measurement input monitors the temperature in
the reactive power compensation system and causes the fan to be switched on
if a prede ned temperature threshold is exceeded and switched o again when
the temperature drops below the reset temperature.
To prevent the fan from switching unnecessarily often, it has a run-on time
of 30 minutes. You can switch the fan (relay output 12) on or o permanently
using the "Stage status" menu. If you select "Auto", the fan output is controlled
by the temperature measuring input.
You can also protect the system by de ning a switch-o temperature. This
makes it possible to switch stages o in time if there is a risk of damage due
to overheating. Once the temperature drops below the reset temperature, the
stages are switched on again one after the other.
The settings are saved on an EEPROM so that they are not lost in the event of a
power failure.
The measuring cycle of the controller used to record the necessary network
parameters takes approx. 20 ms.
NOTE
Limit for overvoltage switch-o = measuring voltage + 10% (taking the mea-
suring voltage ratio into account). This value cannot be changed and serves to
protect the compensation system.
In the event of an error, the compensation stages are switched o and "Over-
voltage" is displayed.
Functional principle
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