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Hitachi APCQ - Easy Commissioning

Hitachi APCQ
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APCQ CAPACITOR BANKS
STATUS
Approved
SECURITY LEVEL
Public
DOCUMENT ID
9AKK107680A4136
RE V.
E
LANG.
en
PAGE
35/47
© 2022 Hitachi Energy. All rights reserved
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7. Easy commissioning
1. General check of the capacitor bank: tightness of all connections, earth, fuses, contactors, etc.
Check correct torque of electrical main connections (refer to 5.4.5 and 5.4.6)
Check all other internal electrical torques (yellow marks on each bolts & nuts must be aligned)
If a change in the yellow marks, please re-torque the connection are per below table
Contactors
Recommended torques
UA26
1.7NM
UA30 to UA40
2.3NM
UA45 to UA75
4NM
UA95
6NM
Tightening torque for coil terminal is 1Nm for all models
Check that fuses are properly inserted in their supports
Inspect all other components
Note: the APCQ capacitor bank should be isolated from all power supplies (power and auxiliary).
2. Check cable cross sections and fuses: they should be compliant to the capacitor bank rating.
3. Check that the CT(’s) is (are) properly installed (closed loop) and connected.
4. Remove the CT short circuit.
Note: If your APCQ capacitor bank is equipped with an optional RVT, refer to RVT instruction manual and
don’t follow the points below.
5. Switch on main supplies.
Note: after a power outage, there’s a reset time. During this period of time, the disconnection icons will be blinking
and the alarm contact will remain closed. After, the APCQ capacitor bank will resume its normal operation.
Check that the fan(s) are working properly.
If not working properly, refer to Chapter 1.
6. RVC Power Factor Controller auto setting.
WARNING: if several units are connected in parallel, please refer to 5.4.11.
WARNING: The parameter “switching delay” of the RVC should be higher than
40 s. Lower value may damage your capacitor bank.
Activate the AUTO SET Mode by pressing twice the Mode button. “ ” appears on the LCD display.

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