CIRCUTOR OPTIM P&P Series - Manual (Page 15)

4.- CAPACITOR BANK START-UP
4.1.- BEFORE START-UP
The automatic capacitor banks include a power factor regulator.
The operation of said regulator must be known prior to start-up; for this reason, all
the capacitor banks include a specific manual for the regulator used.
Ensure you have this manual available for the start-up process.
In order to adjust the regulator incorporated to the capacitor bank and for opti-
mum start-up, the installation load must be at least 30% or 40% of the nominal
load for which the capacitor bank has been dimensioned. If all the stages are not
included, they can be manually connected to check them all.
During low load periods, the entire capacitor bank should not be connected man-
ually, as in some cases resonance with the power transformer of the installation
could occur.
The capacitors are connected in manual mode, first allow enough time for the ca-
pacitors to discharge (as indicated in the capacitor bank's features label) before
reconnecting them to the network.
Otherwise, they could start-up out of phase with a voltage of up to 2xU
n
causing
the destruction of the capacitor.
4.2.- START-UP
Apply the safety regulations listed in section “ 3.- INSTALLATION” of this manual
before operating the units.
The National Electric Code of the country where the capacitor bank is in-
stalled or operated should be strictly followed.
1.- Ensure that the inner circuit breaker that starts the regulator ( Figure 11 ) is connected.
2.- Connect the power supply to the panel and check that the regulator display illuminates im-
mediately. Otherwise, stop and check the previous step.
3.- Check the regulator's cos φ indication.
If the indication is out of range 0.5 to 1, it may be possible that the current transformer and/or
the power supply to the regulator are not properly connected.
Most of the regulators use only one current transformer. In this case, connect according to
Figure 10 (place the current transformer on phase L1 and take the power supply voltage from
phases L2 and L3).
15 Instruction Manual
OPTIM P&P Series