After panel is powered up
1.
Remove the fuses/switch off MCBs/MCCBs which are in series with every
capacitor bank. Connect supply to the
APFC-06
. Keep the load feedback
current feedback in shorted condition
.
2.
Turn ON the supply to the panel and set the various parameters as per
the panel configuration. It is important to understand the meaning of
every parameter from the instructions given before and then put the
appropriate values in them. Wrong values entered can give the wrong
performance of the panel.
3.
Once the parameterization is complete, put the APFC 06 in Manual mode
to check every bank command is transmitted to the control switch. This
can be observed by turning ON the contactor coil supply MCB on. The
corresponding output should be checked for physical turn ON / OFF of the
contactor
.
4.
Once all the contactors are seen to be getting the correct commands,
switch off the supply to the panel and replace all the fuses (or turn on
MCBs/MCCBs if they are provided instead of fuses). Turn on the panel
.
5.
Put APFC 06 back in Manual mode and turn ON/OFF the individual steps.
Use Tong tester (ac current measurement) to check that current in all
three phase of the corresponding bank are OK. In case any bank is not
Power Factor Controller APFC 06
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three phase of the corresponding bank are OK. In case any bank is not
giving the desired current, check for capacitor bank healthiness or power
circuits
.
6.
Keep all the banks in off mode. Remove the short of Supply (Load)
feedback CT. In case kW value is seen as –Ve, CT is with wrong polarity
as applicable for four-quadrant operation mode. However, in two-
quadrant-mode, kW is always treated as +Ve.
7.
Now turn ON the capacitor banks one by one and observe that capacitor
current increases as per the rating of the steps on capacitor Current
display. Turn ON all the banks to see that almost full rated current flows
through the capacitors
.
8.
Switch OFF all the banks manually and put the APFC 06 in Automatic
mode. Switch Off the supply to panel and put it ON. APFC 06 will turn
ON/OFF the capacitor banks as per Load KVAR requirement to maintain
the set target PF.
Observe panel performance for about 2 hours after commissioning
.
