ABB APC Instructions D'installation, D'utilisation Et D'entretien page 22

Once in AUTO Mode, the RVC automatically switches on the necessary steps to reach the programmed
ϕ.
target cos
ϕ
The actual cos appears on the LCD display.
Note: a negative cos ϕ indicates that the load is re-injecting reactive power on the network. The RVC
continues to work normally.
Important notice
The minimum value of the switching delay time between the APC steps is 40sec.
If this delay time has been manually modified and is lower than 40 sec., there is a hazard of
equipment damage. This will void the guaranty.
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Figure 4.5. View of the Protections parameters
APC - Chapter 4. Easy commissioning