4�- OPERATION
The Controller MASTER control VAR FAST is a reactive energy regulator unit that measures
the cos φ of the grid and that regulates the connection and disconnection of capacitors in order
to correct it.
The control is carried out in the four quadrants, Figure 11.
Figure 11: Measurement and Compensation in the four quadrants�
In addition to the basic functions of any regulator the Controller MASTER control VAR FAST:
Performs the functions of a network analyzer, measuring and displaying multiple parameters.
Has a Plug&Play function for automatic conguration of the unit.
Has an AutoTest and manual Test function for testing the status of the capacitor bank capac-
itors.
Has an FCP system which minimises the number of capacitor connections and disconnec-
tions.
Supports step forcing.
Can work with various connection types.
Measures leakage current with the option of associating an alarm and conducting a search
for and cancelling the faulty capacitor.
Has multiple alarms for warning of possible faults, whether in the capacitor bank or in the
installation.
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